Initial commit

Restart from Atomic
2020-07-06 21:18:29 +02:00 · 2020-07-06 21:18:29 +02:00 · 2aff0cea95
commit 2aff0cea95
122 changed files with 50376 additions and 0 deletions
--- a/.gitattributes
+++ b/.gitattributes
@ -0,0 +1,11 @@
+# Images
+*.bmp filter=lfs diff=lfs merge=lfs -text
+*.dds filter=lfs diff=lfs merge=lfs -text
+*.jpeg filter=lfs diff=lfs merge=lfs -text
+*.jpg filter=lfs diff=lfs merge=lfs -text
+*.JPG filter=lfs diff=lfs merge=lfs -text
+*.png filter=lfs diff=lfs merge=lfs -text
+*.PNG filter=lfs diff=lfs merge=lfs -text
+*.tga filter=lfs diff=lfs merge=lfs -text
+*.tiff filter=lfs diff=lfs merge=lfs -text
+*.BMP filter=lfs diff=lfs merge=lfs -text
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,6 @@
+.vscode
+build
+docs
+include
+external
+content/**/.*
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@ -0,0 +1,45 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Run (gdb)",
+            "type": "cppdbg",
+            "request": "launch",
+            "program": "${workspaceFolder}/build/univerxel",
+            "args": [],
+            "preLaunchTask": "Build info",
+            "stopAtEntry": false,
+            "cwd": "${workspaceFolder}/build",
+            "environment": [],
+            "externalConsole": false,
+            "MIMode": "gdb",
+            "setupCommands": [
+                {
+                    "description": "Activer l'impression en mode Pretty pour gdb",
+                    "text": "-enable-pretty-printing",
+                    "ignoreFailures": true
+                }
+            ]
+        },
+        {
+            "name": "Run (gdb debug)",
+            "type": "cppdbg",
+            "request": "launch",
+            "program": "${workspaceFolder}/build/univerxel",
+            "args": [],
+            "preLaunchTask": "Build debug",
+            "stopAtEntry": false,
+            "cwd": "${workspaceFolder}/build",
+            "environment": [],
+            "externalConsole": false,
+            "MIMode": "gdb",
+            "setupCommands": [
+                {
+                    "description": "Activer l'impression en mode Pretty pour gdb",
+                    "text": "-enable-pretty-printing",
+                    "ignoreFailures": true
+                }
+            ]
+        }
+    ]
+}
--- a/.vscode/tasks.json
+++ b/.vscode/tasks.json
@ -0,0 +1,113 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "clear",
+            "type": "shell",
+            "command": "rm -r ${workspaceRoot}/build && mkdir ${workspaceRoot}/build"
+        },
+        {
+            "label": "cmake",
+            "type": "shell",
+            "command": "cmake",
+            "args": [".."],
+            "options": {
+                "cwd": "${workspaceRoot}/build"
+            }
+        },
+        {
+            "label": "cmake info",
+            "type": "shell",
+            "command": "cmake",
+            "args": ["-DCMAKE_BUILD_TYPE=RelWithDebInfo", ".."],
+            "options": {
+                "cwd": "${workspaceRoot}/build"
+            }
+        },
+        {
+            "label": "cmake debug",
+            "type": "shell",
+            "command": "cmake",
+            "args": ["-DCMAKE_BUILD_TYPE=Debug", ".."],
+            "options": {
+                "cwd": "${workspaceRoot}/build"
+            }
+        },
+        {
+            "label": "make",
+            "type": "shell",
+            "command": "make",
+            "options": {
+                "cwd": "${workspaceRoot}/build"
+            }
+        },
+        {
+            "label": "exec",
+            "type": "shell",
+            "command": "./atomic",
+            "options": {
+                "cwd": "${workspaceRoot}/build"
+            }
+        },
+        {
+            "label": "exec memcheck",
+            "type": "shell",
+            "command": "valgrind --leak-check=full --show-leak-kinds=all --fair-sched=yes ./atomic",
+            "options": {
+                "cwd": "${workspaceRoot}/build"
+            }
+        },
+        {
+            "label": "exec helgrind",
+            "type": "shell",
+            "command": "valgrind --tool=helgrind --fair-sched=yes ./atomic",
+            "options": {
+                "cwd": "${workspaceRoot}/build"
+            }
+        },
+        {
+            "label": "exec callgrind",
+            "type": "shell",
+            "command": "valgrind --tool=callgrind --dump-instr=yes --simulate-cache=yes --fair-sched=yes ./atomic",
+            "options": {
+                "cwd": "${workspaceRoot}/build"
+            }
+        },
+        {
+            "label": "Build",
+            "group": "build",
+            "dependsOrder": "sequence",
+            "dependsOn": ["cmake", "make"]
+        },
+        {
+            "label": "Build info",
+            "group": "build",
+            "dependsOrder": "sequence",
+            "dependsOn": ["cmake info", "make"]
+        },
+        {
+            "label": "Build debug",
+            "group": "build",
+            "dependsOrder": "sequence",
+            "dependsOn": ["cmake debug", "make"]
+        },
+        {
+            "label": "Rebuild",
+            "group": "build",
+            "dependsOrder": "sequence",
+            "dependsOn": ["clear", "Build"]
+        },
+        {
+            "label": "Run",
+            "group": "build",
+            "dependsOrder": "sequence",
+            "dependsOn": ["Build", "exec"]
+        },
+        {
+            "label": "Run valgrind",
+            "group": "build",
+            "dependsOrder": "sequence",
+            "dependsOn": ["Build debug", "exec memcheck"]
+        }
+    ]
+}
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -0,0 +1,53 @@
+cmake_minimum_required(VERSION 3.0)
+project (univerxel VERSION 0.0.1)
+
+cmake_policy(SET CMP0072 NEW)
+find_package(OpenGL REQUIRED)
+
+if(NOT CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE Release)
+endif()
+
+set(CMAKE_CXX_FLAGS "-Wall -Wextra")
+
+find_program(CCACHE_FOUND ccache)
+if(CCACHE_FOUND)
+	set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ccache)
+endif(CCACHE_FOUND)
+
+set(ALL_LIBS
+	${OPENGL_LIBRARY}
+	glfw
+	GLEW
+	pthread
+)
+
+add_definitions(
+	-DTW_STATIC
+	-DTW_NO_LIB_PRAGMA
+	-DTW_NO_DIRECT3D
+	-DGLEW_STATIC
+	-D_CRT_SECURE_NO_WARNINGS
+	-mavx2 #-mavx512f
+	-mfma
+)
+
+file(GLOB_RECURSE SOURCES "src/*.cpp")
+file(GLOB IMGUI "include/imgui-1.76/*.cpp")
+file(GLOB FASTNOISE "include/FastNoiseSIMD/*.cpp")
+
+add_executable(univerxel ${SOURCES} ${IMGUI} ${FASTNOISE})
+target_compile_features(univerxel PUBLIC cxx_std_17)
+target_link_libraries(univerxel ${ALL_LIBS})
+target_include_directories(univerxel PRIVATE "include/imgui-1.76/" "include/FastNoiseSIMD/")
+
+
+file(COPY content/shaders DESTINATION ${CMAKE_BINARY_DIR}/content)
+file(COPY content/textures DESTINATION ${CMAKE_BINARY_DIR}/content)
+
+# Docs
+add_custom_target(docs
+    COMMAND doxygen ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile
+    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+    COMMENT "Build doc."
+)
--- a/2553
+++ b/2553
--- a/11
+++ b/11
@ -0,0 +1,11 @@
+Copyright 2020 Maelys Bois
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
--- a/README.md
+++ b/README.md
@ -0,0 +1,96 @@
+# Univerxel <!-- omit in toc -->
+
+Work in progress galaxy down to atom (mostly centimeter) Voxel game
+
+## Table of Contents <!-- omit in toc -->
+
+- [About The Project](#about-the-project)
+  - [Built With](#built-with)
+- [Getting Started](#getting-started)
+  - [Prerequisites](#prerequisites)
+  - [Installation](#installation)
+- [Usage](#usage)
+- [RoadMap](#roadmap)
+- [License](#license)
+- [Contact](#contact)
+
+
+<!-- ABOUT THE PROJECT -->
+## About The Project
+
+Experimental project using OpenGL.
+
+
+### Built With
+
+* C++
+* OpenGL
+* ImGui
+* FasNoiseSIMD
+* Love and insomnia
+
+
+<!-- GETTING STARTED -->
+## Getting Started
+
+To get a local copy up and running, follow these simple steps.
+
+
+### Prerequisites
+
+* C++17
+* CMake
+* OpenGL
+* GLFw
+* Glew
+
+
+### Installation
+
+1. Clone the project repo
+```sh
+git clone https://git.wadza.fr/me/univerxel.git
+```
+2. Create build folder and move
+```sh
+mkdir build && cd build
+```
+3. Build CMake
+```sh
+cmake ..
+```
+4. Build Make
+```sh
+make
+```
+
+
+<!-- USAGE EXAMPLES -->
+## Usage
+
+```sh
+./univerxel
+```
+
+Profit !
+
+
+
+<!-- ROADMAP -->
+## RoadMap
+
+See [Features](TODO.md)
+
+<!-- LICENSE -->
+## License
+
+Distributed under the MIT License. See (LICENSE)[LICENSE] for more information.
+
+
+
+<!-- CONTACT -->
+## Contact
+
+Maelys Bois - [/me](https://git.wadza.fr/me) - me@wadza.fr
+
+Project Link: [https://git.wadza.fr/me/atomic](https://git.wadza.fr/me/atomic)
--- a/TODO.md
+++ b/TODO.md
@ -0,0 +1,24 @@
+# Features
+
+## Data
+- [ ] Hashed Octree
+- [ ] Serialize
+- [ ] Generate noise
+- [ ] Edition
+- [ ] Planet
+
+## Rendering
+- [x] Render triangle
+- [ ] Avoid texture noise
+- [ ] Skybox
+- [ ] Better cheap planar
+- [ ] Cascaded shadow maps
+
+## Contouring
+- [ ] Box contouring
+- [ ] LOD
+- [ ] Dual MC
+- [ ] Collision
+- [ ] Render with glBufferSubData
+- [ ] Frustum Culling
+- [ ] Occlusion Culling
--- a/content/shaders/Simple.fs
+++ b/content/shaders/Simple.fs
@ -0,0 +1,8 @@
+#version 330 core
+
+// Ouput data
+layout(location = 0) out vec4 color;
+
+void main(){
+	color = vec4(1, 0, 0, 0);
+}
--- a/content/shaders/Simple.vs
+++ b/content/shaders/Simple.vs
@ -0,0 +1,9 @@
+#version 330 core
+
+layout(location = 0) in vec3 Position_modelspace;
+
+uniform mat4 MVP;
+
+void main(){
+	gl_Position = MVP * vec4(Position_modelspace,1);
+}
--- a/content/shaders/UI.fs
+++ b/content/shaders/UI.fs
@ -0,0 +1,12 @@
+#version 330 core
+
+// Ouput data
+layout(location = 0) out vec4 color;
+
+uniform sampler2D Texture;
+
+in vec2 UV;
+
+void main(){
+	color = texture(Texture, UV);
+}
--- a/content/shaders/UI.vs
+++ b/content/shaders/UI.vs
@ -0,0 +1,13 @@
+#version 330 core
+
+// Input vertex data, different for all executions of this shader.
+layout(location = 0) in vec3 Position_modelspace;
+
+// Output data ; will be interpolated for each fragment.
+out vec2 UV;
+
+void main(){
+	gl_Position = vec4(Position_modelspace,1);
+	UV = (Position_modelspace.xy+vec2(1,1))/2.0;
+}
+
--- a/content/textures-src/Aim.png
+++ b/content/textures-src/Aim.png
--- a/content/textures-src/Rough_rock_019_COLOR.jpg
+++ b/content/textures-src/Rough_rock_019_COLOR.jpg
--- a/content/textures-src/Rough_rock_019_DISP.jpg
+++ b/content/textures-src/Rough_rock_019_DISP.jpg
--- a/content/textures-src/Rough_rock_019_NRM.jpg
+++ b/content/textures-src/Rough_rock_019_NRM.jpg
--- a/content/textures-src/Rough_rock_019_OCC.jpg
+++ b/content/textures-src/Rough_rock_019_OCC.jpg
--- a/content/textures-src/Rough_rock_019_SPEC.jpg
+++ b/content/textures-src/Rough_rock_019_SPEC.jpg
--- a/content/textures-src/Sand_005_ambientOcclusion.jpg
+++ b/content/textures-src/Sand_005_ambientOcclusion.jpg
--- a/content/textures-src/Sand_005_baseColor.jpg
+++ b/content/textures-src/Sand_005_baseColor.jpg
--- a/content/textures-src/Sand_005_height.png
+++ b/content/textures-src/Sand_005_height.png
--- a/content/textures-src/Sand_005_normal.jpg
+++ b/content/textures-src/Sand_005_normal.jpg
--- a/content/textures-src/Sand_005_roughness.jpg
+++ b/content/textures-src/Sand_005_roughness.jpg
--- a/content/textures-src/Seaside_rocks_01_1K_AO.png
+++ b/content/textures-src/Seaside_rocks_01_1K_AO.png
--- a/content/textures-src/Seaside_rocks_01_1K_Base_Color.png
+++ b/content/textures-src/Seaside_rocks_01_1K_Base_Color.png
--- a/content/textures-src/Seaside_rocks_01_1K_Height.png
+++ b/content/textures-src/Seaside_rocks_01_1K_Height.png
--- a/content/textures-src/Seaside_rocks_01_1K_Normal.png
+++ b/content/textures-src/Seaside_rocks_01_1K_Normal.png
--- a/content/textures-src/Seaside_rocks_01_1K_Roughness.png
+++ b/content/textures-src/Seaside_rocks_01_1K_Roughness.png
--- a/content/textures-src/Stone_Path_004_ambientOcclusion.jpg
+++ b/content/textures-src/Stone_Path_004_ambientOcclusion.jpg
--- a/content/textures-src/Stone_Path_004_baseColor.jpg
+++ b/content/textures-src/Stone_Path_004_baseColor.jpg
--- a/content/textures-src/Stone_Path_004_height.png
+++ b/content/textures-src/Stone_Path_004_height.png
--- a/content/textures-src/Stone_Path_004_normal.jpg
+++ b/content/textures-src/Stone_Path_004_normal.jpg
--- a/content/textures-src/Stone_Path_004_roughness.jpg
+++ b/content/textures-src/Stone_Path_004_roughness.jpg
--- a/content/textures-src/Stone_Wall_008_COLOR.jpg
+++ b/content/textures-src/Stone_Wall_008_COLOR.jpg
--- a/content/textures-src/Stone_Wall_008_DISP.png
+++ b/content/textures-src/Stone_Wall_008_DISP.png
--- a/content/textures-src/Stone_Wall_008_NORM.jpg
+++ b/content/textures-src/Stone_Wall_008_NORM.jpg
--- a/content/textures-src/Stone_Wall_008_OCC.jpg
+++ b/content/textures-src/Stone_Wall_008_OCC.jpg
--- a/content/textures-src/Stone_Wall_008_ROUGH.jpg
+++ b/content/textures-src/Stone_Wall_008_ROUGH.jpg
--- a/content/textures/terrain/Credits.txt
+++ b/content/textures/terrain/Credits.txt
@ -0,0 +1 @@
+CC0 - https://www.patreon.com/gendo - https://3dtextures.me
--- a/content/textures/terrain/Rough_rock.dds
+++ b/content/textures/terrain/Rough_rock.dds
--- a/content/textures/terrain/Rough_rock.hos.dds
+++ b/content/textures/terrain/Rough_rock.hos.dds
--- a/content/textures/terrain/Rough_rock.nrm.dds
+++ b/content/textures/terrain/Rough_rock.nrm.dds
--- a/content/textures/terrain/Sand.dds
+++ b/content/textures/terrain/Sand.dds
--- a/content/textures/terrain/Sand.hos.dds
+++ b/content/textures/terrain/Sand.hos.dds
--- a/content/textures/terrain/Sand.nrm.dds
+++ b/content/textures/terrain/Sand.nrm.dds
--- a/content/textures/terrain/Seaside_rock.dds
+++ b/content/textures/terrain/Seaside_rock.dds
--- a/content/textures/terrain/Seaside_rock.hos.dds
+++ b/content/textures/terrain/Seaside_rock.hos.dds
--- a/content/textures/terrain/Seaside_rock.nrm.dds
+++ b/content/textures/terrain/Seaside_rock.nrm.dds
--- a/content/textures/terrain/Stone_path.dds
+++ b/content/textures/terrain/Stone_path.dds
--- a/content/textures/terrain/Stone_path.hos.dds
+++ b/content/textures/terrain/Stone_path.hos.dds
--- a/content/textures/terrain/Stone_path.nrm.dds
+++ b/content/textures/terrain/Stone_path.nrm.dds
--- a/content/textures/terrain/Stone_wall.dds
+++ b/content/textures/terrain/Stone_wall.dds
--- a/content/textures/terrain/Stone_wall.hos.dds
+++ b/content/textures/terrain/Stone_wall.hos.dds
--- a/content/textures/terrain/Stone_wall.nrm.dds
+++ b/content/textures/terrain/Stone_wall.nrm.dds
--- a/content/textures/ui/Aim.dds
+++ b/content/textures/ui/Aim.dds
--- a/include/FastNoiseSIMD/ARM/cpu-features.c
+++ b/include/FastNoiseSIMD/ARM/cpu-features.c
--- a/include/FastNoiseSIMD/ARM/cpu-features.h
+++ b/include/FastNoiseSIMD/ARM/cpu-features.h
@ -0,0 +1,318 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#ifndef CPU_FEATURES_H
+#define CPU_FEATURES_H
+
+#include <sys/cdefs.h>
+#include <stdint.h>
+
+__BEGIN_DECLS
+
+/* A list of valid values returned by android_getCpuFamily().
+ * They describe the CPU Architecture of the current process.
+ */
+typedef enum {
+    ANDROID_CPU_FAMILY_UNKNOWN = 0,
+    ANDROID_CPU_FAMILY_ARM,
+    ANDROID_CPU_FAMILY_X86,
+    ANDROID_CPU_FAMILY_MIPS,
+    ANDROID_CPU_FAMILY_ARM64,
+    ANDROID_CPU_FAMILY_X86_64,
+    ANDROID_CPU_FAMILY_MIPS64,
+
+    ANDROID_CPU_FAMILY_MAX  /* do not remove */
+
+} AndroidCpuFamily;
+
+/* Return the CPU family of the current process.
+ *
+ * Note that this matches the bitness of the current process. I.e. when
+ * running a 32-bit binary on a 64-bit capable CPU, this will return the
+ * 32-bit CPU family value.
+ */
+extern AndroidCpuFamily android_getCpuFamily(void);
+
+/* Return a bitmap describing a set of optional CPU features that are
+ * supported by the current device's CPU. The exact bit-flags returned
+ * depend on the value returned by android_getCpuFamily(). See the
+ * documentation for the ANDROID_CPU_*_FEATURE_* flags below for details.
+ */
+extern uint64_t android_getCpuFeatures(void);
+
+/* The list of feature flags for ANDROID_CPU_FAMILY_ARM that can be
+ * recognized by the library (see note below for 64-bit ARM). Value details
+ * are:
+ *
+ *   VFPv2:
+ *     CPU supports the VFPv2 instruction set. Many, but not all, ARMv6 CPUs
+ *     support these instructions. VFPv2 is a subset of VFPv3 so this will
+ *     be set whenever VFPv3 is set too.
+ *
+ *   ARMv7:
+ *     CPU supports the ARMv7-A basic instruction set.
+ *     This feature is mandated by the 'armeabi-v7a' ABI.
+ *
+ *   VFPv3:
+ *     CPU supports the VFPv3-D16 instruction set, providing hardware FPU
+ *     support for single and double precision floating point registers.
+ *     Note that only 16 FPU registers are available by default, unless
+ *     the D32 bit is set too. This feature is also mandated by the
+ *     'armeabi-v7a' ABI.
+ *
+ *   VFP_D32:
+ *     CPU VFP optional extension that provides 32 FPU registers,
+ *     instead of 16. Note that ARM mandates this feature is the 'NEON'
+ *     feature is implemented by the CPU.
+ *
+ *   NEON:
+ *     CPU FPU supports "ARM Advanced SIMD" instructions, also known as
+ *     NEON. Note that this mandates the VFP_D32 feature as well, per the
+ *     ARM Architecture specification.
+ *
+ *   VFP_FP16:
+ *     Half-width floating precision VFP extension. If set, the CPU
+ *     supports instructions to perform floating-point operations on
+ *     16-bit registers. This is part of the VFPv4 specification, but
+ *     not mandated by any Android ABI.
+ *
+ *   VFP_FMA:
+ *     Fused multiply-accumulate VFP instructions extension. Also part of
+ *     the VFPv4 specification, but not mandated by any Android ABI.
+ *
+ *   NEON_FMA:
+ *     Fused multiply-accumulate NEON instructions extension. Optional
+ *     extension from the VFPv4 specification, but not mandated by any
+ *     Android ABI.
+ *
+ *   IDIV_ARM:
+ *     Integer division available in ARM mode. Only available
+ *     on recent CPUs (e.g. Cortex-A15).
+ *
+ *   IDIV_THUMB2:
+ *     Integer division available in Thumb-2 mode. Only available
+ *     on recent CPUs (e.g. Cortex-A15).
+ *
+ *   iWMMXt:
+ *     Optional extension that adds MMX registers and operations to an
+ *     ARM CPU. This is only available on a few XScale-based CPU designs
+ *     sold by Marvell. Pretty rare in practice.
+ *
+ *   AES:
+ *     CPU supports AES instructions. These instructions are only
+ *     available for 32-bit applications running on ARMv8 CPU.
+ *
+ *   CRC32:
+ *     CPU supports CRC32 instructions. These instructions are only
+ *     available for 32-bit applications running on ARMv8 CPU.
+ *
+ *   SHA2:
+ *     CPU supports SHA2 instructions. These instructions are only
+ *     available for 32-bit applications running on ARMv8 CPU.
+ *
+ *   SHA1:
+ *     CPU supports SHA1 instructions. These instructions are only
+ *     available for 32-bit applications running on ARMv8 CPU.
+ *
+ *   PMULL:
+ *     CPU supports 64-bit PMULL and PMULL2 instructions. These
+ *     instructions are only available for 32-bit applications
+ *     running on ARMv8 CPU.
+ *
+ * If you want to tell the compiler to generate code that targets one of
+ * the feature set above, you should probably use one of the following
+ * flags (for more details, see technical note at the end of this file):
+ *
+ *   -mfpu=vfp
+ *   -mfpu=vfpv2
+ *     These are equivalent and tell GCC to use VFPv2 instructions for
+ *     floating-point operations. Use this if you want your code to
+ *     run on *some* ARMv6 devices, and any ARMv7-A device supported
+ *     by Android.
+ *
+ *     Generated code requires VFPv2 feature.
+ *
+ *   -mfpu=vfpv3-d16
+ *     Tell GCC to use VFPv3 instructions (using only 16 FPU registers).
+ *     This should be generic code that runs on any CPU that supports the
+ *     'armeabi-v7a' Android ABI. Note that no ARMv6 CPU supports this.
+ *
+ *     Generated code requires VFPv3 feature.
+ *
+ *   -mfpu=vfpv3
+ *     Tell GCC to use VFPv3 instructions with 32 FPU registers.
+ *     Generated code requires VFPv3|VFP_D32 features.
+ *
+ *   -mfpu=neon
+ *     Tell GCC to use VFPv3 instructions with 32 FPU registers, and
+ *     also support NEON intrinsics (see <arm_neon.h>).
+ *     Generated code requires VFPv3|VFP_D32|NEON features.
+ *
+ *   -mfpu=vfpv4-d16
+ *     Generated code requires VFPv3|VFP_FP16|VFP_FMA features.
+ *
+ *   -mfpu=vfpv4
+ *     Generated code requires VFPv3|VFP_FP16|VFP_FMA|VFP_D32 features.
+ *
+ *   -mfpu=neon-vfpv4
+ *     Generated code requires VFPv3|VFP_FP16|VFP_FMA|VFP_D32|NEON|NEON_FMA
+ *     features.
+ *
+ *   -mcpu=cortex-a7
+ *   -mcpu=cortex-a15
+ *     Generated code requires VFPv3|VFP_FP16|VFP_FMA|VFP_D32|
+ *                             NEON|NEON_FMA|IDIV_ARM|IDIV_THUMB2
+ *     This flag implies -mfpu=neon-vfpv4.
+ *
+ *   -mcpu=iwmmxt
+ *     Allows the use of iWMMXt instrinsics with GCC.
+ *
+ * IMPORTANT NOTE: These flags should only be tested when
+ * android_getCpuFamily() returns ANDROID_CPU_FAMILY_ARM, i.e. this is a
+ * 32-bit process.
+ *
+ * When running a 64-bit ARM process on an ARMv8 CPU,
+ * android_getCpuFeatures() will return a different set of bitflags
+ */
+enum {
+    ANDROID_CPU_ARM_FEATURE_ARMv7       = (1 << 0),
+    ANDROID_CPU_ARM_FEATURE_VFPv3       = (1 << 1),
+    ANDROID_CPU_ARM_FEATURE_NEON        = (1 << 2),
+    ANDROID_CPU_ARM_FEATURE_LDREX_STREX = (1 << 3),
+    ANDROID_CPU_ARM_FEATURE_VFPv2       = (1 << 4),
+    ANDROID_CPU_ARM_FEATURE_VFP_D32     = (1 << 5),
+    ANDROID_CPU_ARM_FEATURE_VFP_FP16    = (1 << 6),
+    ANDROID_CPU_ARM_FEATURE_VFP_FMA     = (1 << 7),
+    ANDROID_CPU_ARM_FEATURE_NEON_FMA    = (1 << 8),
+    ANDROID_CPU_ARM_FEATURE_IDIV_ARM    = (1 << 9),
+    ANDROID_CPU_ARM_FEATURE_IDIV_THUMB2 = (1 << 10),
+    ANDROID_CPU_ARM_FEATURE_iWMMXt      = (1 << 11),
+    ANDROID_CPU_ARM_FEATURE_AES         = (1 << 12),
+    ANDROID_CPU_ARM_FEATURE_PMULL       = (1 << 13),
+    ANDROID_CPU_ARM_FEATURE_SHA1        = (1 << 14),
+    ANDROID_CPU_ARM_FEATURE_SHA2        = (1 << 15),
+    ANDROID_CPU_ARM_FEATURE_CRC32       = (1 << 16),
+};
+
+/* The bit flags corresponding to the output of android_getCpuFeatures()
+ * when android_getCpuFamily() returns ANDROID_CPU_FAMILY_ARM64. Value details
+ * are:
+ *
+ *   FP:
+ *     CPU has Floating-point unit.
+ *
+ *   ASIMD:
+ *     CPU has Advanced SIMD unit.
+ *
+ *   AES:
+ *     CPU supports AES instructions.
+ *
+ *   CRC32:
+ *     CPU supports CRC32 instructions.
+ *
+ *   SHA2:
+ *     CPU supports SHA2 instructions.
+ *
+ *   SHA1:
+ *     CPU supports SHA1 instructions.
+ *
+ *   PMULL:
+ *     CPU supports 64-bit PMULL and PMULL2 instructions.
+ */
+enum {
+    ANDROID_CPU_ARM64_FEATURE_FP      = (1 << 0),
+    ANDROID_CPU_ARM64_FEATURE_ASIMD   = (1 << 1),
+    ANDROID_CPU_ARM64_FEATURE_AES     = (1 << 2),
+    ANDROID_CPU_ARM64_FEATURE_PMULL   = (1 << 3),
+    ANDROID_CPU_ARM64_FEATURE_SHA1    = (1 << 4),
+    ANDROID_CPU_ARM64_FEATURE_SHA2    = (1 << 5),
+    ANDROID_CPU_ARM64_FEATURE_CRC32   = (1 << 6),
+};
+
+/* The bit flags corresponding to the output of android_getCpuFeatures()
+ * when android_getCpuFamily() returns ANDROID_CPU_FAMILY_X86 or
+ * ANDROID_CPU_FAMILY_X86_64.
+ */
+enum {
+    ANDROID_CPU_X86_FEATURE_SSSE3  = (1 << 0),
+    ANDROID_CPU_X86_FEATURE_POPCNT = (1 << 1),
+    ANDROID_CPU_X86_FEATURE_MOVBE  = (1 << 2),
+    ANDROID_CPU_X86_FEATURE_SSE4_1 = (1 << 3),
+    ANDROID_CPU_X86_FEATURE_SSE4_2 = (1 << 4),
+};
+
+/* The bit flags corresponding to the output of android_getCpuFeatures()
+ * when android_getCpuFamily() returns ANDROID_CPU_FAMILY_MIPS
+ * or ANDROID_CPU_FAMILY_MIPS64.  Values are:
+ *
+ *   R6:
+ *     CPU executes MIPS Release 6 instructions natively, and
+ *     supports obsoleted R1..R5 instructions only via kernel traps.
+ *
+ *   MSA:
+ *     CPU supports Mips SIMD Architecture instructions.
+ */
+enum {
+    ANDROID_CPU_MIPS_FEATURE_R6    = (1 << 0),
+    ANDROID_CPU_MIPS_FEATURE_MSA   = (1 << 1),
+};
+
+
+/* Return the number of CPU cores detected on this device. */
+extern int android_getCpuCount(void);
+
+/* The following is used to force the CPU count and features
+ * mask in sandboxed processes. Under 4.1 and higher, these processes
+ * cannot access /proc, which is the only way to get information from
+ * the kernel about the current hardware (at least on ARM).
+ *
+ * It _must_ be called only once, and before any android_getCpuXXX
+ * function, any other case will fail.
+ *
+ * This function return 1 on success, and 0 on failure.
+ */
+extern int android_setCpu(int      cpu_count,
+                          uint64_t cpu_features);
+
+#ifdef __arm__
+/* Retrieve the ARM 32-bit CPUID value from the kernel.
+ * Note that this cannot work on sandboxed processes under 4.1 and
+ * higher, unless you called android_setCpuArm() before.
+ */
+extern uint32_t android_getCpuIdArm(void);
+
+/* An ARM-specific variant of android_setCpu() that also allows you
+ * to set the ARM CPUID field.
+ */
+extern int android_setCpuArm(int      cpu_count,
+                             uint64_t cpu_features,
+                             uint32_t cpu_id);
+#endif
+
+__END_DECLS
+
+#endif /* CPU_FEATURES_H */
--- a/include/FastNoiseSIMD/FastNoiseSIMD.cpp
+++ b/include/FastNoiseSIMD/FastNoiseSIMD.cpp
@ -0,0 +1,556 @@
+// FastNoiseSIMD.cpp
+//
+// MIT License
+//
+// Copyright(c) 2017 Jordan Peck
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// The developer's email is jorzixdan.me2@gzixmail.com (for great email, take
+// off every 'zix'.)
+//
+
+#include "FastNoiseSIMD.h"
+#include <assert.h>
+#include <stdlib.h>
+#include <algorithm>
+#include <cstdint>
+
+#ifdef FN_COMPILE_NO_SIMD_FALLBACK
+#define SIMD_LEVEL_H FN_NO_SIMD_FALLBACK
+#include "FastNoiseSIMD_internal.h"
+#endif
+
+#ifdef FN_COMPILE_SSE2
+#define SIMD_LEVEL_H FN_SSE2
+#include "FastNoiseSIMD_internal.h"
+#endif
+
+#ifdef FN_COMPILE_SSE41
+#define SIMD_LEVEL_H FN_SSE41
+#include "FastNoiseSIMD_internal.h"
+#endif
+
+#ifdef FN_COMPILE_AVX2
+#define SIMD_LEVEL_H FN_AVX2
+#include "FastNoiseSIMD_internal.h"
+#endif
+
+#ifdef FN_COMPILE_AVX512
+#define SIMD_LEVEL_H FN_AVX512
+#include "FastNoiseSIMD_internal.h"
+#endif
+
+#ifdef FN_COMPILE_NEON
+#define SIMD_LEVEL_H FN_NEON
+#include "FastNoiseSIMD_internal.h"
+#endif
+
+// CPUid
+#ifdef _WIN32
+#include <intrin.h>
+#elif defined(FN_ARM)
+#if !defined(__aarch64__) && !defined(FN_IOS)
+#include "ARM/cpu-features.h"
+#endif
+#else
+#include <cpuid.h>
+#include "inttypes.h"
+#endif
+
+int FastNoiseSIMD::s_currentSIMDLevel = -1;
+
+#ifdef FN_ARM
+int GetFastestSIMD()
+{
+#if defined(__aarch64__) || defined(FN_IOS)
+	return FN_NEON;
+#else
+	if (android_getCpuFamily() == ANDROID_CPU_FAMILY_ARM)
+	{
+		auto cpuFeatures = android_getCpuFeatures();
+		
+		if (cpuFeatures & ANDROID_CPU_ARM_FEATURE_NEON)
+#ifdef FN_USE_FMA
+			if (cpuFeatures & ANDROID_CPU_ARM_FEATURE_NEON_FMA)
+#endif
+				return FN_NEON;
+	}
+
+	return FN_NO_SIMD_FALLBACK;
+#endif
+}
+#else
+
+#ifdef _WIN32
+void cpuid(int32_t out[4], int32_t x) {
+	__cpuidex(out, x, 0);
+}
+uint64_t xgetbv(unsigned int x) {
+	return _xgetbv(x);
+}
+#else
+void cpuid(int32_t out[4], int32_t x) {
+	__cpuid_count(x, 0, out[0], out[1], out[2], out[3]);
+}
+uint64_t xgetbv(unsigned int index) {
+	uint32_t eax, edx;
+	__asm__ __volatile__("xgetbv" : "=a"(eax), "=d"(edx) : "c"(index));
+	return ((uint64_t)edx << 32) | eax;
+}
+#define _XCR_XFEATURE_ENABLED_MASK  0
+#endif
+
+int GetFastestSIMD()
+{
+	//https://github.com/Mysticial/FeatureDetector
+
+	int cpuInfo[4];
+
+	cpuid(cpuInfo, 0);
+	int nIds = cpuInfo[0];
+
+	if (nIds < 0x00000001)
+		return FN_NO_SIMD_FALLBACK;
+
+	cpuid(cpuInfo, 0x00000001);
+
+	// SSE2
+	if ((cpuInfo[3] & 1 << 26) == 0)
+		return FN_NO_SIMD_FALLBACK;
+
+	// SSE41
+	if ((cpuInfo[2] & 1 << 19) == 0)
+		return FN_SSE2;
+
+	// AVX
+	bool cpuXSaveSuport = (cpuInfo[2] & 1 << 26) != 0;
+	bool osAVXSuport = (cpuInfo[2] & 1 << 27) != 0;
+	bool cpuAVXSuport = (cpuInfo[2] & 1 << 28) != 0;
+
+	if (cpuXSaveSuport && osAVXSuport && cpuAVXSuport)
+	{
+		uint64_t xcrFeatureMask = xgetbv(_XCR_XFEATURE_ENABLED_MASK);
+		if ((xcrFeatureMask & 0x6) != 0x6)
+			return FN_SSE41;
+	}
+	else
+		return FN_SSE41;
+
+	// AVX2 FMA3
+	if (nIds < 0x00000007)
+		return FN_SSE41;
+
+#ifdef FN_USE_FMA
+	bool cpuFMA3Support = (cpuInfo[2] & 1 << 12) != 0;
+#else
+	bool cpuFMA3Support = true;
+#endif
+
+	cpuid(cpuInfo, 0x00000007);
+
+	bool cpuAVX2Support = (cpuInfo[1] & 1 << 5) != 0;
+
+	if (!cpuFMA3Support || !cpuAVX2Support)
+		return FN_SSE41;
+
+	// AVX512
+	bool cpuAVX512Support = (cpuInfo[1] & 1 << 16) != 0;		
+	bool oxAVX512Support = (xgetbv(_XCR_XFEATURE_ENABLED_MASK) & 0xe6) == 0xe6;
+
+	if (!cpuAVX512Support || !oxAVX512Support)
+		return FN_AVX2;
+
+	return FN_AVX512;	
+}
+#endif
+
+FastNoiseSIMD* FastNoiseSIMD::NewFastNoiseSIMD(int seed)
+{
+	GetSIMDLevel();
+
+#ifdef FN_COMPILE_NEON
+#ifdef FN_COMPILE_NO_SIMD_FALLBACK
+	if (s_currentSIMDLevel >= FN_NEON)
+#endif
+		return new FastNoiseSIMD_internal::FASTNOISE_SIMD_CLASS(FN_NEON)(seed);
+#endif
+
+#ifdef FN_COMPILE_AVX512
+	if (s_currentSIMDLevel >= FN_AVX512)
+		return new FastNoiseSIMD_internal::FASTNOISE_SIMD_CLASS(FN_AVX512)(seed);
+#endif
+
+#ifdef FN_COMPILE_AVX2
+	if (s_currentSIMDLevel >= FN_AVX2)
+		return new FastNoiseSIMD_internal::FASTNOISE_SIMD_CLASS(FN_AVX2)(seed);
+#endif
+
+#ifdef FN_COMPILE_SSE41
+	if (s_currentSIMDLevel >= FN_SSE41)
+		return new FastNoiseSIMD_internal::FASTNOISE_SIMD_CLASS(FN_SSE41)(seed);
+#endif
+
+#ifdef FN_COMPILE_SSE2
+#ifdef FN_COMPILE_NO_SIMD_FALLBACK
+	if (s_currentSIMDLevel >= FN_SSE2)
+#endif
+		return new FastNoiseSIMD_internal::FASTNOISE_SIMD_CLASS(FN_SSE2)(seed);
+#endif
+
+#ifdef FN_COMPILE_NO_SIMD_FALLBACK
+	return new FastNoiseSIMD_internal::FASTNOISE_SIMD_CLASS(FN_NO_SIMD_FALLBACK)(seed);
+#endif
+}
+
+int FastNoiseSIMD::GetSIMDLevel()
+{
+	if (s_currentSIMDLevel < 0)
+		s_currentSIMDLevel = GetFastestSIMD();
+
+	return s_currentSIMDLevel;
+}
+
+void FastNoiseSIMD::FreeNoiseSet(float* floatArray)
+{
+#ifdef FN_ALIGNED_SETS
+	GetSIMDLevel();
+
+	if (s_currentSIMDLevel > FN_NO_SIMD_FALLBACK)
+#ifdef _WIN32
+		_aligned_free(floatArray);
+#else
+		free(floatArray);
+#endif
+	else
+#endif
+		delete[] floatArray;
+}
+
+int FastNoiseSIMD::AlignedSize(int size)
+{
+#ifdef FN_ALIGNED_SETS
+	GetSIMDLevel();
+
+#ifdef FN_COMPILE_NEON
+	if (s_currentSIMDLevel >= FN_NEON)
+		return FastNoiseSIMD_internal::FASTNOISE_SIMD_CLASS(FN_NEON)::AlignedSize(size);
+#endif
+
+#ifdef FN_COMPILE_AVX512
+	if (s_currentSIMDLevel >= FN_AVX512)
+		return FastNoiseSIMD_internal::FASTNOISE_SIMD_CLASS(FN_AVX512)::AlignedSize(size);
+#endif
+
+#ifdef FN_COMPILE_AVX2
+	if (s_currentSIMDLevel >= FN_AVX2)
+		return FastNoiseSIMD_internal::FASTNOISE_SIMD_CLASS(FN_AVX2)::AlignedSize(size);
+#endif
+
+#ifdef FN_COMPILE_SSE2
+	if (s_currentSIMDLevel >= FN_SSE2)
+		return FastNoiseSIMD_internal::FASTNOISE_SIMD_CLASS(FN_SSE2)::AlignedSize(size);
+#endif
+#endif
+	return size;
+}
+
+float* FastNoiseSIMD::GetEmptySet(int size)
+{
+#ifdef FN_ALIGNED_SETS
+	GetSIMDLevel();
+
+#ifdef FN_COMPILE_NEON
+	if (s_currentSIMDLevel >= FN_NEON)
+		return FastNoiseSIMD_internal::FASTNOISE_SIMD_CLASS(FN_NEON)::GetEmptySet(size);
+#endif
+
+#ifdef FN_COMPILE_AVX512
+	if (s_currentSIMDLevel >= FN_AVX512)
+		return FastNoiseSIMD_internal::FASTNOISE_SIMD_CLASS(FN_AVX512)::GetEmptySet(size);
+#endif
+
+#ifdef FN_COMPILE_AVX2
+	if (s_currentSIMDLevel >= FN_AVX2)
+		return FastNoiseSIMD_internal::FASTNOISE_SIMD_CLASS(FN_AVX2)::GetEmptySet(size);
+#endif
+
+#ifdef FN_COMPILE_SSE2
+	if (s_currentSIMDLevel >= FN_SSE2)
+		return FastNoiseSIMD_internal::FASTNOISE_SIMD_CLASS(FN_SSE2)::GetEmptySet(size);
+#endif
+#endif
+	return new float[size];
+}
+
+FastNoiseVectorSet* FastNoiseSIMD::GetVectorSet(int xSize, int ySize, int zSize)
+{
+	FastNoiseVectorSet* vectorSet = new FastNoiseVectorSet();
+	FillVectorSet(vectorSet, xSize, ySize, zSize);
+	return vectorSet;
+}
+
+void FastNoiseSIMD::FillVectorSet(FastNoiseVectorSet* vectorSet, int xSize, int ySize, int zSize)
+{
+	assert(vectorSet);
+
+	vectorSet->SetSize(xSize*ySize*zSize);
+	vectorSet->sampleScale = 0;
+
+	int index = 0;
+
+	for (int ix = 0; ix < xSize; ix++)
+	{
+		for (int iy = 0; iy < ySize; iy++)
+		{
+			for (int iz = 0; iz < zSize; iz++)
+			{
+				vectorSet->xSet[index] = float(ix);
+				vectorSet->ySet[index] = float(iy);
+				vectorSet->zSet[index] = float(iz);
+				index++;
+			}
+		}
+	}
+}
+
+FastNoiseVectorSet* FastNoiseSIMD::GetSamplingVectorSet(int sampleScale, int xSize, int ySize, int zSize)
+{
+	FastNoiseVectorSet* vectorSet = new FastNoiseVectorSet();
+	FillSamplingVectorSet(vectorSet, sampleScale, xSize, ySize, zSize);
+	return vectorSet;
+}
+
+void FastNoiseSIMD::FillSamplingVectorSet(FastNoiseVectorSet* vectorSet, int sampleScale, int xSize, int ySize, int zSize)
+{
+	assert(vectorSet);
+
+	if (sampleScale <= 0)
+	{
+		FillVectorSet(vectorSet, xSize, ySize, zSize);
+		return;
+	}
+
+	vectorSet->sampleSizeX = xSize;
+	vectorSet->sampleSizeY = ySize;
+	vectorSet->sampleSizeZ = zSize;
+
+	int sampleSize = 1 << sampleScale;
+	int sampleMask = sampleSize - 1;
+
+	int xSizeSample = xSize;
+	int ySizeSample = ySize;
+	int zSizeSample = zSize;
+
+	if (xSizeSample & sampleMask)
+		xSizeSample = (xSizeSample & ~sampleMask) + sampleSize;
+
+	if (ySizeSample & sampleMask)
+		ySizeSample = (ySizeSample & ~sampleMask) + sampleSize;
+
+	if (zSizeSample & sampleMask)
+		zSizeSample = (zSizeSample & ~sampleMask) + sampleSize;
+
+	xSizeSample = (xSizeSample >> sampleScale) + 1;
+	ySizeSample = (ySizeSample >> sampleScale) + 1;
+	zSizeSample = (zSizeSample >> sampleScale) + 1;
+
+	vectorSet->SetSize(xSizeSample*ySizeSample*zSizeSample);
+	vectorSet->sampleScale = sampleScale;
+
+	int index = 0;
+
+	for (int ix = 0; ix < xSizeSample; ix++)
+	{
+		for (int iy = 0; iy < ySizeSample; iy++)
+		{
+			for (int iz = 0; iz < zSizeSample; iz++)
+			{
+				vectorSet->xSet[index] = float(ix*sampleSize);
+				vectorSet->ySet[index] = float(iy*sampleSize);
+				vectorSet->zSet[index] = float(iz*sampleSize);
+				index++;
+			}
+		}
+	}
+}
+
+float* FastNoiseSIMD::GetNoiseSet(int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier)
+{
+	float* noiseSet = GetEmptySet(xSize, ySize, zSize);
+
+	FillNoiseSet(noiseSet, xStart, yStart, zStart, xSize, ySize, zSize, scaleModifier);
+
+	return noiseSet;
+}
+
+void FastNoiseSIMD::FillNoiseSet(float* noiseSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier)
+{
+	switch (m_noiseType)
+	{
+	case Value:
+		FillValueSet(noiseSet, xStart, yStart, zStart, xSize, ySize, zSize, scaleModifier);
+		break;
+	case ValueFractal:
+		FillValueFractalSet(noiseSet, xStart, yStart, zStart, xSize, ySize, zSize, scaleModifier);
+		break;
+	case Perlin:
+		FillPerlinSet(noiseSet, xStart, yStart, zStart, xSize, ySize, zSize, scaleModifier);
+		break;
+	case PerlinFractal:
+		FillPerlinFractalSet(noiseSet, xStart, yStart, zStart, xSize, ySize, zSize, scaleModifier);
+		break;
+	case Simplex:
+		FillSimplexSet(noiseSet, xStart, yStart, zStart, xSize, ySize, zSize, scaleModifier);
+		break;
+	case SimplexFractal:
+		FillSimplexFractalSet(noiseSet, xStart, yStart, zStart, xSize, ySize, zSize, scaleModifier);
+		break;
+	case WhiteNoise:
+		FillWhiteNoiseSet(noiseSet, xStart, yStart, zStart, xSize, ySize, zSize, scaleModifier);
+		break;
+	case Cellular:
+		FillCellularSet(noiseSet, xStart, yStart, zStart, xSize, ySize, zSize, scaleModifier);
+		break;
+	case Cubic:
+		FillCubicSet(noiseSet, xStart, yStart, zStart, xSize, ySize, zSize, scaleModifier);
+		break;
+	case CubicFractal:
+		FillCubicFractalSet(noiseSet, xStart, yStart, zStart, xSize, ySize, zSize, scaleModifier);
+		break;
+	default:
+		break;
+	}
+}
+
+void FastNoiseSIMD::FillNoiseSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset, float yOffset, float zOffset)
+{
+	switch (m_noiseType)
+	{
+	case Value:
+		FillValueSet(noiseSet, vectorSet, xOffset, yOffset, zOffset);
+		break;
+	case ValueFractal:
+		FillValueFractalSet(noiseSet, vectorSet, xOffset, yOffset, zOffset);
+		break;
+	case Perlin:
+		FillPerlinSet(noiseSet, vectorSet, xOffset, yOffset, zOffset);
+		break;
+	case PerlinFractal:
+		FillPerlinFractalSet(noiseSet, vectorSet, xOffset, yOffset, zOffset);
+		break;
+	case Simplex:
+		FillSimplexSet(noiseSet, vectorSet, xOffset, yOffset, zOffset);
+		break;
+	case SimplexFractal:
+		FillSimplexFractalSet(noiseSet, vectorSet, xOffset, yOffset, zOffset);
+		break;
+	case WhiteNoise:
+		FillWhiteNoiseSet(noiseSet, vectorSet, xOffset, yOffset, zOffset);
+		break;
+	case Cellular:
+		FillCellularSet(noiseSet, vectorSet, xOffset, yOffset, zOffset);
+		break;
+	case Cubic:
+		FillCubicSet(noiseSet, vectorSet, xOffset, yOffset, zOffset);
+		break;
+	case CubicFractal:
+		FillCubicFractalSet(noiseSet, vectorSet, xOffset, yOffset, zOffset);
+		break;
+	default:
+		break;
+	}
+}
+
+float* FastNoiseSIMD::GetSampledNoiseSet(int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, int sampleScale)
+{
+	float* noiseSet = GetEmptySet(xSize, ySize, zSize);
+
+	FillSampledNoiseSet(noiseSet, xStart, yStart, zStart, xSize, ySize, zSize, sampleScale);
+
+	return noiseSet;
+}
+
+#define GET_SET(f) \
+float* FastNoiseSIMD::Get##f##Set(int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier)\
+{\
+	float* noiseSet = GetEmptySet(xSize, ySize, zSize);\
+	\
+	Fill##f##Set(noiseSet, xStart, yStart, zStart, xSize, ySize, zSize, scaleModifier);\
+	\
+	return noiseSet;\
+}
+
+GET_SET(WhiteNoise)
+
+GET_SET(Value)
+GET_SET(ValueFractal)
+
+GET_SET(Perlin)
+GET_SET(PerlinFractal)
+
+GET_SET(Simplex)
+GET_SET(SimplexFractal)
+
+GET_SET(Cellular)
+
+GET_SET(Cubic)
+GET_SET(CubicFractal)
+
+float FastNoiseSIMD::CalculateFractalBounding(int octaves, float gain)
+{
+	float amp = gain;
+	float ampFractal = 1.0f;
+	for (int i = 1; i < octaves; i++)
+	{
+		ampFractal += amp;
+		amp *= gain;
+	}
+	return 1.0f / ampFractal;
+}
+
+void FastNoiseSIMD::SetCellularDistance2Indicies(int cellularDistanceIndex0, int cellularDistanceIndex1)
+{
+	m_cellularDistanceIndex0 = std::min(cellularDistanceIndex0, cellularDistanceIndex1);
+	m_cellularDistanceIndex1 = std::max(cellularDistanceIndex0, cellularDistanceIndex1);
+
+	m_cellularDistanceIndex0 = std::min(std::max(m_cellularDistanceIndex0, 0), FN_CELLULAR_INDEX_MAX);
+	m_cellularDistanceIndex1 = std::min(std::max(m_cellularDistanceIndex1, 0), FN_CELLULAR_INDEX_MAX);
+}
+
+void FastNoiseVectorSet::Free()
+{
+	size = -1;
+	FastNoiseSIMD::FreeNoiseSet(xSet);
+	xSet = nullptr;
+	ySet = nullptr;
+	zSet = nullptr;
+}
+
+void FastNoiseVectorSet::SetSize(int _size)
+{
+	Free();
+	size = _size;
+
+	int alignedSize = FastNoiseSIMD::AlignedSize(size);
+
+	xSet = FastNoiseSIMD::GetEmptySet(alignedSize * 3);
+	ySet = xSet + alignedSize;
+	zSet = ySet + alignedSize;
+}
--- a/include/FastNoiseSIMD/FastNoiseSIMD.h
+++ b/include/FastNoiseSIMD/FastNoiseSIMD.h
@ -0,0 +1,365 @@
+// FastNoiseSIMD.h
+//
+// MIT License
+//
+// Copyright(c) 2017 Jordan Peck
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// The developer's email is jorzixdan.me2@gzixmail.com (for great email, take
+// off every 'zix'.)
+//
+
+// VERSION: 0.7.0
+
+#ifndef FASTNOISE_SIMD_H
+#define FASTNOISE_SIMD_H
+
+#if defined(__arm__) || defined(__aarch64__)
+#define FN_ARM
+//#define FN_IOS
+#define FN_COMPILE_NEON
+#else
+
+// Comment out lines to not compile for certain instruction sets
+#define FN_COMPILE_SSE2
+#define FN_COMPILE_SSE41
+
+// To compile AVX2 set C++ code generation to use /arch:AVX(2) on FastNoiseSIMD_avx2.cpp
+// Note: This does not break support for pre AVX CPUs, AVX code is only run if support is detected
+#define FN_COMPILE_AVX2
+
+// Only the latest compilers will support this
+// #define FN_COMPILE_AVX512
+
+// Using FMA instructions with AVX(51)2/NEON provides a small performance increase but can cause 
+// minute variations in noise output compared to other SIMD levels due to higher calculation precision
+// Intel compiler will always generate FMA instructions, use /Qfma- or -no-fma to disable
+#define FN_USE_FMA
+#endif
+
+// Using aligned sets of memory for float arrays allows faster storing of SIMD data
+// Comment out to allow unaligned float arrays to be used as sets
+#define FN_ALIGNED_SETS
+
+// SSE2/NEON support is guaranteed on 64bit CPUs so no fallback is needed
+#if !(defined(_WIN64) || defined(__x86_64__) || defined(__ppc64__) || defined(__aarch64__) || defined(FN_IOS)) || defined(_DEBUG)
+#define FN_COMPILE_NO_SIMD_FALLBACK
+#endif
+
+/*
+Tested Compilers:
+-MSVC v120/v140
+-Intel 16.0
+-GCC 4.7 Linux
+-Clang MacOSX
+
+CPU instruction support:
+
+SSE2
+Intel Pentium 4 - 2001
+AMD Opteron/Athlon - 2003
+
+SEE4.1
+Intel Penryn - 2007
+AMD Bulldozer - Q4 2011
+
+AVX
+Intel Sandy Bridge - Q1 2011
+AMD Bulldozer - Q4 2011
+
+AVX2
+Intel Haswell - Q2 2013
+AMD Carrizo - Q2 2015
+
+FMA3
+Intel Haswell - Q2 2013
+AMD Piledriver - 2012
+
+AVX-512F
+Intel Skylake-X - Q2 2017
+*/
+
+struct FastNoiseVectorSet;
+
+class FastNoiseSIMD
+{
+public:
+
+	enum NoiseType { Value, ValueFractal, Perlin, PerlinFractal, Simplex, SimplexFractal, WhiteNoise, Cellular, Cubic, CubicFractal };
+	enum FractalType { FBM, Billow, RigidMulti };
+	enum PerturbType { None, Gradient, GradientFractal, Normalise, Gradient_Normalise, GradientFractal_Normalise };
+
+	enum CellularDistanceFunction { Euclidean, Manhattan, Natural };
+	enum CellularReturnType { CellValue, Distance, Distance2, Distance2Add, Distance2Sub, Distance2Mul, Distance2Div, NoiseLookup, Distance2Cave };
+
+	// Creates new FastNoiseSIMD for the highest supported instuction set of the CPU 
+	static FastNoiseSIMD* NewFastNoiseSIMD(int seed = 1337);
+
+	// Returns highest detected level of CPU support
+	// 5: ARM NEON
+	// 4: AVX-512F
+	// 3: AVX2 & FMA3
+	// 2: SSE4.1
+	// 1: SSE2
+	// 0: Fallback, no SIMD support
+	static int GetSIMDLevel(void);
+
+	// Sets the SIMD level for newly created FastNoiseSIMD objects
+	// 5: ARM NEON
+	// 4: AVX-512F
+	// 3: AVX2 & FMA3
+	// 2: SSE4.1
+	// 1: SSE2
+	// 0: Fallback, no SIMD support
+	// -1: Auto-detect fastest supported (Default)
+	// Caution: Setting this manually can cause crashes on CPUs that do not support that level
+	// Caution: Changing this after creating FastNoiseSIMD objects has undefined behaviour
+	static void SetSIMDLevel(int level) { s_currentSIMDLevel = level; }
+
+	// Free a noise set from memory
+	static void FreeNoiseSet(float* noiseSet);
+
+	// Create an empty (aligned) noise set for use with FillNoiseSet()
+	static float* GetEmptySet(int size);
+
+	// Create an empty (aligned) noise set for use with FillNoiseSet()
+	static float* GetEmptySet(int xSize, int ySize, int zSize) { return GetEmptySet(xSize*ySize*zSize); }
+
+	// Rounds the size up to the nearest aligned size for the current SIMD level
+	static int AlignedSize(int size);
+
+
+	// Returns seed used for all noise types
+	int GetSeed(void) const { return m_seed; }
+
+	// Sets seed used for all noise types
+	// Default: 1337
+	void SetSeed(int seed) { m_seed = seed; }
+
+	// Sets frequency for all noise types
+	// Default: 0.01
+	void SetFrequency(float frequency) { m_frequency = frequency; }
+
+	// Sets noise return type of (Get/Fill)NoiseSet()
+	// Default: Simplex
+	void SetNoiseType(NoiseType noiseType) { m_noiseType = noiseType; }
+
+	// Sets scaling factor for individual axis
+	// Defaults: 1.0
+	void SetAxisScales(float xScale, float yScale, float zScale) { m_xScale = xScale; m_yScale = yScale; m_zScale = zScale; }
+
+
+	// Sets octave count for all fractal noise types
+	// Default: 3
+	void SetFractalOctaves(int octaves) { m_octaves = octaves; m_fractalBounding = CalculateFractalBounding(m_octaves, m_gain);	}
+
+	// Sets octave lacunarity for all fractal noise types
+	// Default: 2.0
+	void SetFractalLacunarity(float lacunarity) { m_lacunarity = lacunarity; }
+
+	// Sets octave gain for all fractal noise types
+	// Default: 0.5
+	void SetFractalGain(float gain) { m_gain = gain; m_fractalBounding = CalculateFractalBounding(m_octaves, m_gain); }
+
+	// Sets method for combining octaves in all fractal noise types
+	// Default: FBM
+	void SetFractalType(FractalType fractalType) { m_fractalType = fractalType; }
+
+
+	// Sets return type from cellular noise calculations
+	// Default: Distance
+	void SetCellularReturnType(CellularReturnType cellularReturnType) { m_cellularReturnType = cellularReturnType; }
+
+	// Sets distance function used in cellular noise calculations
+	// Default: Euclidean
+	void SetCellularDistanceFunction(CellularDistanceFunction cellularDistanceFunction) { m_cellularDistanceFunction = cellularDistanceFunction; }
+
+	// Sets the type of noise used if cellular return type is set the NoiseLookup
+	// Default: Simplex
+	void SetCellularNoiseLookupType(NoiseType cellularNoiseLookupType) { m_cellularNoiseLookupType = cellularNoiseLookupType; }
+
+	// Sets relative frequency on the cellular noise lookup return type
+	// Default: 0.2
+	void SetCellularNoiseLookupFrequency(float cellularNoiseLookupFrequency) { m_cellularNoiseLookupFrequency = cellularNoiseLookupFrequency; }
+
+	// Sets the 2 distance indicies used for distance2 return types
+	// Default: 0, 1
+	// Note: index0 should be lower than index1
+	// Both indicies must be >= 0, index1 must be < 4
+	void SetCellularDistance2Indicies(int cellularDistanceIndex0, int cellularDistanceIndex1);
+
+	// Sets the maximum distance a cellular point can move from it's grid position
+	// Setting this high will make artifacts more common
+	// Default: 0.45
+	void SetCellularJitter(float cellularJitter) { m_cellularJitter = cellularJitter; }
+
+
+	// Enables position perturbing for all noise types
+	// Default: None
+	void SetPerturbType(PerturbType perturbType) { m_perturbType = perturbType; }
+
+	// Sets the maximum distance the input position can be perturbed
+	// Default: 1.0
+	void SetPerturbAmp(float perturbAmp) { m_perturbAmp = perturbAmp / 511.5f; }
+
+	// Set the relative frequency for the perturb gradient
+	// Default: 0.5
+	void SetPerturbFrequency(float perturbFrequency) { m_perturbFrequency = perturbFrequency; }
+
+
+	// Sets octave count for perturb fractal types
+	// Default: 3
+	void SetPerturbFractalOctaves(int perturbOctaves) { m_perturbOctaves = perturbOctaves; m_perturbFractalBounding = CalculateFractalBounding(m_perturbOctaves, m_perturbGain); }
+
+	// Sets octave lacunarity for perturb fractal types 
+	// Default: 2.0
+	void SetPerturbFractalLacunarity(float perturbLacunarity) { m_perturbLacunarity = perturbLacunarity; }
+	
+	// Sets octave gain for perturb fractal types 
+	// Default: 0.5
+	void SetPerturbFractalGain(float perturbGain) { m_perturbGain = perturbGain; m_perturbFractalBounding = CalculateFractalBounding(m_perturbOctaves, m_perturbGain);	}
+
+	// Sets the length for vectors after perturb normalising 
+	// Default: 1.0
+	void SetPerturbNormaliseLength(float perturbNormaliseLength) { m_perturbNormaliseLength = perturbNormaliseLength; }
+
+
+	static FastNoiseVectorSet* GetVectorSet(int xSize, int ySize, int zSize);
+	static FastNoiseVectorSet* GetSamplingVectorSet(int sampleScale, int xSize, int ySize, int zSize);
+	static void FillVectorSet(FastNoiseVectorSet* vectorSet, int xSize, int ySize, int zSize);
+	static void FillSamplingVectorSet(FastNoiseVectorSet* vectorSet, int sampleScale, int xSize, int ySize, int zSize);
+
+	float* GetNoiseSet(int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f);
+	void FillNoiseSet(float* noiseSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f);
+	void FillNoiseSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f);
+
+	float* GetSampledNoiseSet(int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, int sampleScale);
+	virtual void FillSampledNoiseSet(float* noiseSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, int sampleScale) = 0;
+	virtual void FillSampledNoiseSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) = 0;
+
+	float* GetWhiteNoiseSet(int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f);
+	virtual void FillWhiteNoiseSet(float* noiseSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) = 0;
+	virtual void FillWhiteNoiseSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) = 0;
+
+	float* GetValueSet(int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f);
+	float* GetValueFractalSet(int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f);
+	virtual void FillValueSet(float* noiseSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) = 0;
+	virtual void FillValueFractalSet(float* noiseSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) = 0;
+	virtual void FillValueSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) = 0;
+	virtual void FillValueFractalSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) = 0;
+
+	float* GetPerlinSet(int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f);
+	float* GetPerlinFractalSet(int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f);
+	virtual void FillPerlinSet(float* noiseSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) = 0;
+	virtual void FillPerlinFractalSet(float* noiseSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) = 0;
+	virtual void FillPerlinSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) = 0;
+	virtual void FillPerlinFractalSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) = 0;
+
+	float* GetSimplexSet(int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f);
+	float* GetSimplexFractalSet(int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f);
+	virtual void FillSimplexSet(float* noiseSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) = 0;
+	virtual void FillSimplexFractalSet(float* noiseSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) = 0;
+	virtual void FillSimplexSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) = 0;
+	virtual void FillSimplexFractalSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) = 0;
+
+	float* GetCellularSet(int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f);
+	virtual void FillCellularSet(float* noiseSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) = 0;
+	virtual void FillCellularSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) = 0;
+	
+	float* GetCubicSet(int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f);
+	float* GetCubicFractalSet(int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f);
+	virtual void FillCubicSet(float* noiseSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) = 0;
+	virtual void FillCubicFractalSet(float* noiseSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) = 0;
+	virtual void FillCubicSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) = 0;
+	virtual void FillCubicFractalSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) = 0;
+
+	virtual ~FastNoiseSIMD() { }
+
+protected:
+	int m_seed = 1337;
+	float m_frequency = 0.01f;
+	NoiseType m_noiseType = SimplexFractal;
+
+	float m_xScale = 1.0f;
+	float m_yScale = 1.0f;
+	float m_zScale = 1.0f;
+
+	int m_octaves = 3;
+	float m_lacunarity = 2.0f;
+	float m_gain = 0.5f;
+	FractalType m_fractalType = FBM;	
+	float m_fractalBounding;	
+
+	CellularDistanceFunction m_cellularDistanceFunction = Euclidean;
+	CellularReturnType m_cellularReturnType = Distance;
+	NoiseType m_cellularNoiseLookupType = Simplex;
+	float m_cellularNoiseLookupFrequency = 0.2f;
+	int m_cellularDistanceIndex0 = 0;
+	int m_cellularDistanceIndex1 = 1;
+	float m_cellularJitter = 0.45f;
+
+	PerturbType m_perturbType = None;
+	float m_perturbAmp = 1.0f;
+	float m_perturbFrequency = 0.5f;
+
+	int m_perturbOctaves = 3;
+	float m_perturbLacunarity = 2.0f;
+	float m_perturbGain = 0.5f;
+	float m_perturbFractalBounding;
+	float m_perturbNormaliseLength = 1.0f;
+
+	static int s_currentSIMDLevel;
+	static float CalculateFractalBounding(int octaves, float gain);
+};
+
+struct FastNoiseVectorSet
+{
+public:
+	int size = -1;
+	float* xSet = nullptr;
+	float* ySet = nullptr;
+	float* zSet = nullptr;
+
+	// Only used for sampled vector sets
+	int sampleScale = 0;
+	int sampleSizeX = -1;
+	int sampleSizeY = -1;
+	int sampleSizeZ = -1;
+
+	FastNoiseVectorSet() {}
+
+	FastNoiseVectorSet(int _size) { SetSize(_size); }
+
+	~FastNoiseVectorSet() { Free(); }
+
+	void Free();
+
+	void SetSize(int _size);
+};
+
+#define FN_CELLULAR_INDEX_MAX 3
+
+#define FN_NO_SIMD_FALLBACK 0
+#define FN_SSE2 1
+#define FN_SSE41 2
+#define FN_AVX2 3
+#define FN_AVX512 4
+#define FN_NEON 5
+#endif
--- a/include/FastNoiseSIMD/FastNoiseSIMD_avx2.cpp
+++ b/include/FastNoiseSIMD/FastNoiseSIMD_avx2.cpp
@ -0,0 +1,49 @@
+// FastNoiseSIMD_avx2.cpp
+//
+// MIT License
+//
+// Copyright(c) 2017 Jordan Peck
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// The developer's email is jorzixdan.me2@gzixmail.com (for great email, take
+// off every 'zix'.)
+//
+
+#include "FastNoiseSIMD.h"
+
+// DISABLE WHOLE PROGRAM OPTIMIZATION for this file when using MSVC
+
+// To compile AVX2 support enable AVX(2) code generation compiler flags for this file
+#ifdef FN_COMPILE_AVX2
+#ifndef __AVX__
+#ifdef __GNUC__
+#error To compile AVX2 add build command "-march=core-avx2" on FastNoiseSIMD_avx2.cpp, or remove "#define FN_COMPILE_AVX2" from FastNoiseSIMD.h
+#else
+#error To compile AVX2 set C++ code generation to use /arch:AVX(2) on FastNoiseSIMD_avx2.cpp, or remove "#define FN_COMPILE_AVX2" from FastNoiseSIMD.h
+#endif
+#endif
+
+#define SIMD_LEVEL_H FN_AVX2
+#include "FastNoiseSIMD_internal.h"
+#include <immintrin.h> //AVX2 FMA3
+
+#define SIMD_LEVEL FN_AVX2
+#include "FastNoiseSIMD_internal.cpp"
+#endif
--- a/include/FastNoiseSIMD/FastNoiseSIMD_avx512.cpp
+++ b/include/FastNoiseSIMD/FastNoiseSIMD_avx512.cpp
@ -0,0 +1,53 @@
+// FastNoiseSIMD_avx512.cpp
+//
+// MIT License
+//
+// Copyright(c) 2017 Jordan Peck
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// The developer's email is jorzixdan.me2@gzixmail.com (for great email, take
+// off every 'zix'.)
+//
+
+#include "FastNoiseSIMD.h"
+
+// DISABLE WHOLE PROGRAM OPTIMIZATION for this file when using MSVC
+
+// To compile AVX512 support enable AVX(2) code generation compiler flags for this file
+#ifdef FN_COMPILE_AVX512
+#ifndef __AVX__
+#ifdef __GNUC__
+#error To compile AVX512 add build command "-march=core-avx2" on FastNoiseSIMD_avx512.cpp, or remove "#define FN_COMPILE_AVX512" from FastNoiseSIMD.h
+#else
+#error To compile AVX512 set C++ code generation to use /arch:AVX(2) on FastNoiseSIMD_avx512.cpp, or remove "#define FN_COMPILE_AVX512" from FastNoiseSIMD.h
+#endif
+#endif
+
+#define SIMD_LEVEL_H FN_AVX512
+#include "FastNoiseSIMD_internal.h"
+#ifdef _WIN32
+#include <intrin.h> //AVX512
+#else
+#include <x86intrin.h> //AVX512
+#endif
+
+#define SIMD_LEVEL FN_AVX512
+#include "FastNoiseSIMD_internal.cpp"
+#endif
--- a/include/FastNoiseSIMD/FastNoiseSIMD_internal.cpp
+++ b/include/FastNoiseSIMD/FastNoiseSIMD_internal.cpp
--- a/include/FastNoiseSIMD/FastNoiseSIMD_internal.h
+++ b/include/FastNoiseSIMD/FastNoiseSIMD_internal.h
@ -0,0 +1,77 @@
+// FastNoiseSIMD_internal.h
+//
+// MIT License
+//
+// Copyright(c) 2017 Jordan Peck
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// The developer's email is jorzixdan.me2@gzixmail.com (for great email, take
+// off every 'zix'.)
+//
+
+#ifndef SIMD_LEVEL_H
+#error Dont include this file without defining SIMD_LEVEL_H
+#else
+#define FASTNOISE_SIMD_CLASS2(x) FastNoiseSIMD_L##x
+#define FASTNOISE_SIMD_CLASS(level) FASTNOISE_SIMD_CLASS2(level)
+
+namespace FastNoiseSIMD_internal
+{
+	class FASTNOISE_SIMD_CLASS(SIMD_LEVEL_H) : public FastNoiseSIMD
+	{
+	public:
+		// Do not call this, use SetSIMDLevel(int) to have NewFastNoiseSIMD() return the level you want
+		FASTNOISE_SIMD_CLASS(SIMD_LEVEL_H)(int seed = 1337);
+
+		static float* GetEmptySet(int size);
+		static int AlignedSize(int size);
+
+		void FillSampledNoiseSet(float* noiseSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, int sampleScale) override;
+		void FillSampledNoiseSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) override;
+
+		void FillWhiteNoiseSet(float* floatSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) override;
+		void FillWhiteNoiseSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) override;
+
+		void FillValueSet(float* floatSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) override;
+		void FillValueFractalSet(float* floatSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) override;
+		void FillValueSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) override;
+		void FillValueFractalSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) override;
+
+		void FillPerlinSet(float* floatSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) override;
+		void FillPerlinFractalSet(float* floatSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) override;
+		void FillPerlinSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) override;
+		void FillPerlinFractalSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) override;
+
+		void FillSimplexSet(float* floatSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) override;
+		void FillSimplexFractalSet(float* floatSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) override;
+		void FillSimplexSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) override;
+		void FillSimplexFractalSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) override;
+
+		void FillCellularSet(float* floatSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) override;
+		void FillCellularSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) override;
+
+		void FillCubicSet(float* floatSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) override;
+		void FillCubicFractalSet(float* floatSet, int xStart, int yStart, int zStart, int xSize, int ySize, int zSize, float scaleModifier = 1.0f) override;
+		void FillCubicSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) override;
+		void FillCubicFractalSet(float* noiseSet, FastNoiseVectorSet* vectorSet, float xOffset = 0.0f, float yOffset = 0.0f, float zOffset = 0.0f) override;
+	};
+}
+#undef SIMD_LEVEL_H
+#endif
--- a/include/FastNoiseSIMD/FastNoiseSIMD_neon.cpp
+++ b/include/FastNoiseSIMD/FastNoiseSIMD_neon.cpp
@ -0,0 +1,38 @@
+// FastNoiseSIMD_neon.cpp
+//
+// MIT License
+//
+// Copyright(c) 2017 Jordan Peck
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// The developer's email is jorzixdan.me2@gzixmail.com (for great email, take
+// off every 'zix'.)
+//
+
+#include "FastNoiseSIMD.h"
+#ifdef FN_COMPILE_NEON
+
+#define SIMD_LEVEL_H FN_NEON
+#include "FastNoiseSIMD_internal.h"
+#include <arm_neon.h>
+
+#define SIMD_LEVEL FN_NEON
+#include "FastNoiseSIMD_internal.cpp"
+#endif
--- a/include/FastNoiseSIMD/FastNoiseSIMD_sse2.cpp
+++ b/include/FastNoiseSIMD/FastNoiseSIMD_sse2.cpp
@ -0,0 +1,41 @@
+// FastNoiseSIMD_sse2.cpp
+//
+// MIT License
+//
+// Copyright(c) 2017 Jordan Peck
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// The developer's email is jorzixdan.me2@gzixmail.com (for great email, take
+// off every 'zix'.)
+//
+
+#include "FastNoiseSIMD.h"
+
+// DISABLE WHOLE PROGRAM OPTIMIZATION for this file when using MSVC
+
+// Depending on the compiler this file may need to have SSE2 code generation compiler flags enabled
+#ifdef FN_COMPILE_SSE2
+#define SIMD_LEVEL_H FN_SSE2
+#include "FastNoiseSIMD_internal.h"
+#include <emmintrin.h> //SSE2
+
+#define SIMD_LEVEL FN_SSE2
+#include "FastNoiseSIMD_internal.cpp"
+#endif
--- a/include/FastNoiseSIMD/FastNoiseSIMD_sse41.cpp
+++ b/include/FastNoiseSIMD/FastNoiseSIMD_sse41.cpp
@ -0,0 +1,41 @@
+// FastNoiseSIMD_sse41.cpp
+//
+// MIT License
+//
+// Copyright(c) 2017 Jordan Peck
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// The developer's email is jorzixdan.me2@gzixmail.com (for great email, take
+// off every 'zix'.)
+//
+
+#include "FastNoiseSIMD.h"
+
+// DISABLE WHOLE PROGRAM OPTIMIZATION for this file when using MSVC
+
+// Depending on the compiler this file may need to have SSE4.1 code generation compiler flags enabled
+#ifdef FN_COMPILE_SSE41
+#define SIMD_LEVEL_H FN_SSE41
+#include "FastNoiseSIMD_internal.h"
+#include <smmintrin.h> //SSE4.1
+
+#define SIMD_LEVEL FN_SSE41
+#include "FastNoiseSIMD_internal.cpp"
+#endif
--- a/include/FastNoiseSIMD/LICENSE
+++ b/include/FastNoiseSIMD/LICENSE
@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2016 Jordan Peck
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/include/imgui-1.76/.editorconfig
+++ b/include/imgui-1.76/.editorconfig
@ -0,0 +1,22 @@
+# See http://editorconfig.org to read about the EditorConfig format.
+# - Automatically supported by VS2017+ and most common IDE or text editors.
+# - For older VS2010 to VS2015, install https://marketplace.visualstudio.com/items?itemName=EditorConfigTeam.EditorConfig
+
+# top-most EditorConfig file
+root = true
+
+# Default settings:
+# Use 4 spaces as indentation
+[*]
+indent_style = space
+indent_size = 4
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[imstb_*]
+indent_size = 3
+trim_trailing_whitespace = false
+
+[Makefile]
+indent_style = tab
+indent_size = 4
--- a/include/imgui-1.76/.gitattributes
+++ b/include/imgui-1.76/.gitattributes
@ -0,0 +1,30 @@
+* text=auto
+
+*.c text
+*.cpp text
+*.h text
+*.m text
+*.mm text
+*.md text
+*.txt text
+*.html text
+*.bat text
+*.frag text
+*.vert text
+*.mkb text
+*.icf text
+
+*.sln text eol=crlf
+*.vcxproj text eol=crlf
+*.vcxproj.filters text eol=crlf
+*.natvis text eol=crlf
+
+Makefile text eol=lf
+*.sh text eol=lf
+*.pbxproj text eol=lf
+*.storyboard text eol=lf
+*.plist text eol=lf
+
+*.png binary
+*.ttf binary
+*.lib binary
--- a/include/imgui-1.76/.gitignore
+++ b/include/imgui-1.76/.gitignore
@ -0,0 +1,49 @@
+## OSX artifacts
+.DS_Store
+
+## Dear ImGui artifacts
+imgui.ini
+
+## General build artifacts
+*.o
+*.obj
+*.exe
+examples/build/*
+examples/*/Debug/*
+examples/*/Release/*
+examples/*/x64/*
+
+## Visual Studio artifacts
+.vs
+ipch
+*.opensdf
+*.log
+*.pdb
+*.ilk
+*.user
+*.sdf
+*.suo
+*.VC.db
+*.VC.VC.opendb
+
+## Xcode artifacts
+project.xcworkspace
+xcuserdata
+
+## Emscripten artifacts
+examples/*.o.tmp
+examples/*.out.js
+examples/*.out.wasm
+examples/example_emscripten/example_emscripten.*
+
+## JetBrains IDE artifacts
+.idea
+cmake-build-*
+
+## Unix executables from our example Makefiles
+examples/example_glfw_opengl2/example_glfw_opengl2
+examples/example_glfw_opengl3/example_glfw_opengl3
+examples/example_glut_opengl2/example_glut_opengl2
+examples/example_null/example_null
+examples/example_sdl_opengl2/example_sdl_opengl2
+examples/example_sdl_opengl3/example_sdl_opengl3
--- a/include/imgui-1.76/LICENSE.txt
+++ b/include/imgui-1.76/LICENSE.txt
@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014-2020 Omar Cornut
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/include/imgui-1.76/imconfig.h
+++ b/include/imgui-1.76/imconfig.h
@ -0,0 +1,108 @@
+//-----------------------------------------------------------------------------
+// COMPILE-TIME OPTIONS FOR DEAR IMGUI
+// Runtime options (clipboard callbacks, enabling various features, etc.) can generally be set via the ImGuiIO structure.
+// You can use ImGui::SetAllocatorFunctions() before calling ImGui::CreateContext() to rewire memory allocation functions.
+//-----------------------------------------------------------------------------
+// A) You may edit imconfig.h (and not overwrite it when updating Dear ImGui, or maintain a patch/branch with your modifications to imconfig.h)
+// B) or add configuration directives in your own file and compile with #define IMGUI_USER_CONFIG "myfilename.h"
+// If you do so you need to make sure that configuration settings are defined consistently _everywhere_ Dear ImGui is used, which include
+// the imgui*.cpp files but also _any_ of your code that uses Dear ImGui. This is because some compile-time options have an affect on data structures.
+// Defining those options in imconfig.h will ensure every compilation unit gets to see the same data structure layouts.
+// Call IMGUI_CHECKVERSION() from your .cpp files to verify that the data structures your files are using are matching the ones imgui.cpp is using.
+//-----------------------------------------------------------------------------
+
+#pragma once
+
+//---- Define assertion handler. Defaults to calling assert().
+// If your macro uses multiple statements, make sure is enclosed in a 'do { .. } while (0)' block so it can be used as a single statement.
+//#define IM_ASSERT(_EXPR)  MyAssert(_EXPR)
+//#define IM_ASSERT(_EXPR)  ((void)(_EXPR))     // Disable asserts
+
+//---- Define attributes of all API symbols declarations, e.g. for DLL under Windows
+// Using dear imgui via a shared library is not recommended, because of function call overhead and because we don't guarantee backward nor forward ABI compatibility.
+//#define IMGUI_API __declspec( dllexport )
+//#define IMGUI_API __declspec( dllimport )
+
+//---- Don't define obsolete functions/enums/behaviors. Consider enabling from time to time after updating to avoid using soon-to-be obsolete function/names.
+//#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+
+//---- Disable all of Dear ImGui or don't implement standard windows.
+// It is very strongly recommended to NOT disable the demo windows during development. Please read comments in imgui_demo.cpp.
+//#define IMGUI_DISABLE                                     // Disable everything: all headers and source files will be empty.
+//#define IMGUI_DISABLE_DEMO_WINDOWS                        // Disable demo windows: ShowDemoWindow()/ShowStyleEditor() will be empty. Not recommended.
+//#define IMGUI_DISABLE_METRICS_WINDOW                      // Disable debug/metrics window: ShowMetricsWindow() will be empty.
+
+//---- Don't implement some functions to reduce linkage requirements.
+//#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS   // [Win32] Don't implement default clipboard handler. Won't use and link with OpenClipboard/GetClipboardData/CloseClipboard etc.
+//#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS         // [Win32] Don't implement default IME handler. Won't use and link with ImmGetContext/ImmSetCompositionWindow.
+//#define IMGUI_DISABLE_WIN32_FUNCTIONS                     // [Win32] Won't use and link with any Win32 function (clipboard, ime).
+//#define IMGUI_ENABLE_OSX_DEFAULT_CLIPBOARD_FUNCTIONS      // [OSX] Implement default OSX clipboard handler (need to link with '-framework ApplicationServices', this is why this is not the default).
+//#define IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS            // Don't implement ImFormatString/ImFormatStringV so you can implement them yourself (e.g. if you don't want to link with vsnprintf)
+//#define IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS              // Don't implement ImFabs/ImSqrt/ImPow/ImFmod/ImCos/ImSin/ImAcos/ImAtan2 so you can implement them yourself.
+//#define IMGUI_DISABLE_DEFAULT_FILE_FUNCTIONS              // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite so you can implement them yourself if you don't want to link with fopen/fclose/fread/fwrite. This will also disable the LogToTTY() function.
+//#define IMGUI_DISABLE_DEFAULT_ALLOCATORS                  // Don't implement default allocators calling malloc()/free() to avoid linking with them. You will need to call ImGui::SetAllocatorFunctions().
+
+//---- Include imgui_user.h at the end of imgui.h as a convenience
+//#define IMGUI_INCLUDE_IMGUI_USER_H
+
+//---- Pack colors to BGRA8 instead of RGBA8 (to avoid converting from one to another)
+//#define IMGUI_USE_BGRA_PACKED_COLOR
+
+//---- Use 32-bit for ImWchar (default is 16-bit) to support full unicode code points.
+//#define IMGUI_USE_WCHAR32
+
+//---- Avoid multiple STB libraries implementations, or redefine path/filenames to prioritize another version
+// By default the embedded implementations are declared static and not available outside of imgui cpp files.
+//#define IMGUI_STB_TRUETYPE_FILENAME   "my_folder/stb_truetype.h"
+//#define IMGUI_STB_RECT_PACK_FILENAME  "my_folder/stb_rect_pack.h"
+//#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
+//#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
+
+//---- Unless IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS is defined, use the much faster STB sprintf library implementation of vsnprintf instead of the one from the default C library.
+// Note that stb_sprintf.h is meant to be provided by the user and available in the include path at compile time. Also, the compatibility checks of the arguments and formats done by clang and GCC will be disabled in order to support the extra formats provided by STB sprintf.
+// #define IMGUI_USE_STB_SPRINTF
+
+//---- Define constructor and implicit cast operators to convert back<>forth between your math types and ImVec2/ImVec4.
+// This will be inlined as part of ImVec2 and ImVec4 class declarations.
+/*
+#define IM_VEC2_CLASS_EXTRA                                                 \
+        ImVec2(const MyVec2& f) { x = f.x; y = f.y; }                       \
+        operator MyVec2() const { return MyVec2(x,y); }
+
+#define IM_VEC4_CLASS_EXTRA                                                 \
+        ImVec4(const MyVec4& f) { x = f.x; y = f.y; z = f.z; w = f.w; }     \
+        operator MyVec4() const { return MyVec4(x,y,z,w); }
+*/
+
+//---- Use 32-bit vertex indices (default is 16-bit) is one way to allow large meshes with more than 64K vertices.
+// Your renderer back-end will need to support it (most example renderer back-ends support both 16/32-bit indices).
+// Another way to allow large meshes while keeping 16-bit indices is to handle ImDrawCmd::VtxOffset in your renderer.
+// Read about ImGuiBackendFlags_RendererHasVtxOffset for details.
+//#define ImDrawIdx unsigned int
+
+//---- Override ImDrawCallback signature (will need to modify renderer back-ends accordingly)
+//struct ImDrawList;
+//struct ImDrawCmd;
+//typedef void (*MyImDrawCallback)(const ImDrawList* draw_list, const ImDrawCmd* cmd, void* my_renderer_user_data);
+//#define ImDrawCallback MyImDrawCallback
+
+//---- Debug Tools: Macro to break in Debugger
+// (use 'Metrics->Tools->Item Picker' to pick widgets with the mouse and break into them for easy debugging.)
+//#define IM_DEBUG_BREAK  IM_ASSERT(0)
+//#define IM_DEBUG_BREAK  __debugbreak()
+
+//---- Debug Tools: Have the Item Picker break in the ItemAdd() function instead of ItemHoverable(),
+// (which comes earlier in the code, will catch a few extra items, allow picking items other than Hovered one.)
+// This adds a small runtime cost which is why it is not enabled by default.
+//#define IMGUI_DEBUG_TOOL_ITEM_PICKER_EX
+
+//---- Debug Tools: Enable slower asserts
+//#define IMGUI_DEBUG_PARANOID
+
+//---- Tip: You can add extra functions within the ImGui:: namespace, here or in your own headers files.
+/*
+namespace ImGui
+{
+    void MyFunction(const char* name, const MyMatrix44& v);
+}
+*/
--- a/include/imgui-1.76/imgui.cpp
+++ b/include/imgui-1.76/imgui.cpp
--- a/include/imgui-1.76/imgui.h
+++ b/include/imgui-1.76/imgui.h
--- a/include/imgui-1.76/imgui_demo.cpp
+++ b/include/imgui-1.76/imgui_demo.cpp
--- a/include/imgui-1.76/imgui_draw.cpp
+++ b/include/imgui-1.76/imgui_draw.cpp
--- a/include/imgui-1.76/imgui_impl_glfw.cpp
+++ b/include/imgui-1.76/imgui_impl_glfw.cpp
@ -0,0 +1,369 @@
+// dear imgui: Platform Binding for GLFW
+// This needs to be used along with a Renderer (e.g. OpenGL3, Vulkan..)
+// (Info: GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.)
+// (Requires: GLFW 3.1+)
+
+// Implemented features:
+//  [X] Platform: Clipboard support.
+//  [X] Platform: Gamepad support. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
+//  [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange' (note: the resizing cursors requires GLFW 3.4+).
+//  [X] Platform: Keyboard arrays indexed using GLFW_KEY_* codes, e.g. ImGui::IsKeyPressed(GLFW_KEY_SPACE).
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+// CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2020-01-17: Inputs: Disable error callback while assigning mouse cursors because some X11 setup don't have them and it generates errors.
+//  2019-12-05: Inputs: Added support for new mouse cursors added in GLFW 3.4+ (resizing cursors, not allowed cursor).
+//  2019-10-18: Misc: Previously installed user callbacks are now restored on shutdown.
+//  2019-07-21: Inputs: Added mapping for ImGuiKey_KeyPadEnter.
+//  2019-05-11: Inputs: Don't filter value from character callback before calling AddInputCharacter().
+//  2019-03-12: Misc: Preserve DisplayFramebufferScale when main window is minimized.
+//  2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.
+//  2018-11-07: Inputs: When installing our GLFW callbacks, we save user's previously installed ones - if any - and chain call them.
+//  2018-08-01: Inputs: Workaround for Emscripten which doesn't seem to handle focus related calls.
+//  2018-06-29: Inputs: Added support for the ImGuiMouseCursor_Hand cursor.
+//  2018-06-08: Misc: Extracted imgui_impl_glfw.cpp/.h away from the old combined GLFW+OpenGL/Vulkan examples.
+//  2018-03-20: Misc: Setup io.BackendFlags ImGuiBackendFlags_HasMouseCursors flag + honor ImGuiConfigFlags_NoMouseCursorChange flag.
+//  2018-02-20: Inputs: Added support for mouse cursors (ImGui::GetMouseCursor() value, passed to glfwSetCursor()).
+//  2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
+//  2018-02-06: Inputs: Added mapping for ImGuiKey_Space.
+//  2018-01-25: Inputs: Added gamepad support if ImGuiConfigFlags_NavEnableGamepad is set.
+//  2018-01-25: Inputs: Honoring the io.WantSetMousePos by repositioning the mouse (when using navigation and ImGuiConfigFlags_NavMoveMouse is set).
+//  2018-01-20: Inputs: Added Horizontal Mouse Wheel support.
+//  2018-01-18: Inputs: Added mapping for ImGuiKey_Insert.
+//  2017-08-25: Inputs: MousePos set to -FLT_MAX,-FLT_MAX when mouse is unavailable/missing (instead of -1,-1).
+//  2016-10-15: Misc: Added a void* user_data parameter to Clipboard function handlers.
+
+#include "imgui.h"
+#include "imgui_impl_glfw.h"
+
+// GLFW
+#include <GLFW/glfw3.h>
+#ifdef _WIN32
+#undef APIENTRY
+#define GLFW_EXPOSE_NATIVE_WIN32
+#include <GLFW/glfw3native.h>   // for glfwGetWin32Window
+#endif
+#define GLFW_HAS_WINDOW_TOPMOST       (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ GLFW_FLOATING
+#define GLFW_HAS_WINDOW_HOVERED       (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ GLFW_HOVERED
+#define GLFW_HAS_WINDOW_ALPHA         (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwSetWindowOpacity
+#define GLFW_HAS_PER_MONITOR_DPI      (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwGetMonitorContentScale
+#define GLFW_HAS_VULKAN               (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ glfwCreateWindowSurface
+#ifdef GLFW_RESIZE_NESW_CURSOR  // let's be nice to people who pulled GLFW between 2019-04-16 (3.4 define) and 2019-11-29 (cursors defines) // FIXME: Remove when GLFW 3.4 is released?
+#define GLFW_HAS_NEW_CURSORS          (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3400) // 3.4+ GLFW_RESIZE_ALL_CURSOR, GLFW_RESIZE_NESW_CURSOR, GLFW_RESIZE_NWSE_CURSOR, GLFW_NOT_ALLOWED_CURSOR
+#else
+#define GLFW_HAS_NEW_CURSORS          (0)
+#endif
+
+// Data
+enum GlfwClientApi
+{
+    GlfwClientApi_Unknown,
+    GlfwClientApi_OpenGL,
+    GlfwClientApi_Vulkan
+};
+static GLFWwindow*          g_Window = NULL;    // Main window
+static GlfwClientApi        g_ClientApi = GlfwClientApi_Unknown;
+static double               g_Time = 0.0;
+static bool                 g_MouseJustPressed[5] = { false, false, false, false, false };
+static GLFWcursor*          g_MouseCursors[ImGuiMouseCursor_COUNT] = {};
+static bool                 g_InstalledCallbacks = false;
+
+// Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any.
+static GLFWmousebuttonfun   g_PrevUserCallbackMousebutton = NULL;
+static GLFWscrollfun        g_PrevUserCallbackScroll = NULL;
+static GLFWkeyfun           g_PrevUserCallbackKey = NULL;
+static GLFWcharfun          g_PrevUserCallbackChar = NULL;
+
+static const char* ImGui_ImplGlfw_GetClipboardText(void* user_data)
+{
+    return glfwGetClipboardString((GLFWwindow*)user_data);
+}
+
+static void ImGui_ImplGlfw_SetClipboardText(void* user_data, const char* text)
+{
+    glfwSetClipboardString((GLFWwindow*)user_data, text);
+}
+
+void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods)
+{
+    if (g_PrevUserCallbackMousebutton != NULL)
+        g_PrevUserCallbackMousebutton(window, button, action, mods);
+
+    if (action == GLFW_PRESS && button >= 0 && button < IM_ARRAYSIZE(g_MouseJustPressed))
+        g_MouseJustPressed[button] = true;
+}
+
+void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset)
+{
+    if (g_PrevUserCallbackScroll != NULL)
+        g_PrevUserCallbackScroll(window, xoffset, yoffset);
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.MouseWheelH += (float)xoffset;
+    io.MouseWheel += (float)yoffset;
+}
+
+void ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods)
+{
+    if (g_PrevUserCallbackKey != NULL)
+        g_PrevUserCallbackKey(window, key, scancode, action, mods);
+
+    ImGuiIO& io = ImGui::GetIO();
+    if (action == GLFW_PRESS)
+        io.KeysDown[key] = true;
+    if (action == GLFW_RELEASE)
+        io.KeysDown[key] = false;
+
+    // Modifiers are not reliable across systems
+    io.KeyCtrl = io.KeysDown[GLFW_KEY_LEFT_CONTROL] || io.KeysDown[GLFW_KEY_RIGHT_CONTROL];
+    io.KeyShift = io.KeysDown[GLFW_KEY_LEFT_SHIFT] || io.KeysDown[GLFW_KEY_RIGHT_SHIFT];
+    io.KeyAlt = io.KeysDown[GLFW_KEY_LEFT_ALT] || io.KeysDown[GLFW_KEY_RIGHT_ALT];
+#ifdef _WIN32
+    io.KeySuper = false;
+#else
+    io.KeySuper = io.KeysDown[GLFW_KEY_LEFT_SUPER] || io.KeysDown[GLFW_KEY_RIGHT_SUPER];
+#endif
+}
+
+void ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c)
+{
+    if (g_PrevUserCallbackChar != NULL)
+        g_PrevUserCallbackChar(window, c);
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.AddInputCharacter(c);
+}
+
+static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, GlfwClientApi client_api)
+{
+    g_Window = window;
+    g_Time = 0.0;
+
+    // Setup back-end capabilities flags
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors;         // We can honor GetMouseCursor() values (optional)
+    io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos;          // We can honor io.WantSetMousePos requests (optional, rarely used)
+    io.BackendPlatformName = "imgui_impl_glfw";
+
+    // Keyboard mapping. ImGui will use those indices to peek into the io.KeysDown[] array.
+    io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB;
+    io.KeyMap[ImGuiKey_LeftArrow] = GLFW_KEY_LEFT;
+    io.KeyMap[ImGuiKey_RightArrow] = GLFW_KEY_RIGHT;
+    io.KeyMap[ImGuiKey_UpArrow] = GLFW_KEY_UP;
+    io.KeyMap[ImGuiKey_DownArrow] = GLFW_KEY_DOWN;
+    io.KeyMap[ImGuiKey_PageUp] = GLFW_KEY_PAGE_UP;
+    io.KeyMap[ImGuiKey_PageDown] = GLFW_KEY_PAGE_DOWN;
+    io.KeyMap[ImGuiKey_Home] = GLFW_KEY_HOME;
+    io.KeyMap[ImGuiKey_End] = GLFW_KEY_END;
+    io.KeyMap[ImGuiKey_Insert] = GLFW_KEY_INSERT;
+    io.KeyMap[ImGuiKey_Delete] = GLFW_KEY_DELETE;
+    io.KeyMap[ImGuiKey_Backspace] = GLFW_KEY_BACKSPACE;
+    io.KeyMap[ImGuiKey_Space] = GLFW_KEY_SPACE;
+    io.KeyMap[ImGuiKey_Enter] = GLFW_KEY_ENTER;
+    io.KeyMap[ImGuiKey_Escape] = GLFW_KEY_ESCAPE;
+    io.KeyMap[ImGuiKey_KeyPadEnter] = GLFW_KEY_KP_ENTER;
+    io.KeyMap[ImGuiKey_A] = GLFW_KEY_A;
+    io.KeyMap[ImGuiKey_C] = GLFW_KEY_C;
+    io.KeyMap[ImGuiKey_V] = GLFW_KEY_V;
+    io.KeyMap[ImGuiKey_X] = GLFW_KEY_X;
+    io.KeyMap[ImGuiKey_Y] = GLFW_KEY_Y;
+    io.KeyMap[ImGuiKey_Z] = GLFW_KEY_Z;
+
+    io.SetClipboardTextFn = ImGui_ImplGlfw_SetClipboardText;
+    io.GetClipboardTextFn = ImGui_ImplGlfw_GetClipboardText;
+    io.ClipboardUserData = g_Window;
+#if defined(_WIN32)
+    io.ImeWindowHandle = (void*)glfwGetWin32Window(g_Window);
+#endif
+
+    // Create mouse cursors
+    // (By design, on X11 cursors are user configurable and some cursors may be missing. When a cursor doesn't exist,
+    // GLFW will emit an error which will often be printed by the app, so we temporarily disable error reporting.
+    // Missing cursors will return NULL and our _UpdateMouseCursor() function will use the Arrow cursor instead.)
+    GLFWerrorfun prev_error_callback = glfwSetErrorCallback(NULL);
+    g_MouseCursors[ImGuiMouseCursor_Arrow] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_TextInput] = glfwCreateStandardCursor(GLFW_IBEAM_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_ResizeNS] = glfwCreateStandardCursor(GLFW_VRESIZE_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_ResizeEW] = glfwCreateStandardCursor(GLFW_HRESIZE_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_Hand] = glfwCreateStandardCursor(GLFW_HAND_CURSOR);
+#if GLFW_HAS_NEW_CURSORS
+    g_MouseCursors[ImGuiMouseCursor_ResizeAll] = glfwCreateStandardCursor(GLFW_RESIZE_ALL_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_ResizeNESW] = glfwCreateStandardCursor(GLFW_RESIZE_NESW_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_ResizeNWSE] = glfwCreateStandardCursor(GLFW_RESIZE_NWSE_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_NotAllowed] = glfwCreateStandardCursor(GLFW_NOT_ALLOWED_CURSOR);
+#else
+    g_MouseCursors[ImGuiMouseCursor_ResizeAll] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_ResizeNESW] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_ResizeNWSE] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_NotAllowed] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
+#endif
+    glfwSetErrorCallback(prev_error_callback);
+
+    // Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any.
+    g_PrevUserCallbackMousebutton = NULL;
+    g_PrevUserCallbackScroll = NULL;
+    g_PrevUserCallbackKey = NULL;
+    g_PrevUserCallbackChar = NULL;
+    if (install_callbacks)
+    {
+        g_InstalledCallbacks = true;
+        g_PrevUserCallbackMousebutton = glfwSetMouseButtonCallback(window, ImGui_ImplGlfw_MouseButtonCallback);
+        g_PrevUserCallbackScroll = glfwSetScrollCallback(window, ImGui_ImplGlfw_ScrollCallback);
+        g_PrevUserCallbackKey = glfwSetKeyCallback(window, ImGui_ImplGlfw_KeyCallback);
+        g_PrevUserCallbackChar = glfwSetCharCallback(window, ImGui_ImplGlfw_CharCallback);
+    }
+
+    g_ClientApi = client_api;
+    return true;
+}
+
+bool ImGui_ImplGlfw_InitForOpenGL(GLFWwindow* window, bool install_callbacks)
+{
+    return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_OpenGL);
+}
+
+bool ImGui_ImplGlfw_InitForVulkan(GLFWwindow* window, bool install_callbacks)
+{
+    return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_Vulkan);
+}
+
+void ImGui_ImplGlfw_Shutdown()
+{
+    if (g_InstalledCallbacks)
+    {
+        glfwSetMouseButtonCallback(g_Window, g_PrevUserCallbackMousebutton);
+        glfwSetScrollCallback(g_Window, g_PrevUserCallbackScroll);
+        glfwSetKeyCallback(g_Window, g_PrevUserCallbackKey);
+        glfwSetCharCallback(g_Window, g_PrevUserCallbackChar);
+        g_InstalledCallbacks = false;
+    }
+
+    for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
+    {
+        glfwDestroyCursor(g_MouseCursors[cursor_n]);
+        g_MouseCursors[cursor_n] = NULL;
+    }
+    g_ClientApi = GlfwClientApi_Unknown;
+}
+
+static void ImGui_ImplGlfw_UpdateMousePosAndButtons()
+{
+    // Update buttons
+    ImGuiIO& io = ImGui::GetIO();
+    for (int i = 0; i < IM_ARRAYSIZE(io.MouseDown); i++)
+    {
+        // If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame.
+        io.MouseDown[i] = g_MouseJustPressed[i] || glfwGetMouseButton(g_Window, i) != 0;
+        g_MouseJustPressed[i] = false;
+    }
+
+    // Update mouse position
+    const ImVec2 mouse_pos_backup = io.MousePos;
+    io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
+#ifdef __EMSCRIPTEN__
+    const bool focused = true; // Emscripten
+#else
+    const bool focused = glfwGetWindowAttrib(g_Window, GLFW_FOCUSED) != 0;
+#endif
+    if (focused)
+    {
+        if (io.WantSetMousePos)
+        {
+            glfwSetCursorPos(g_Window, (double)mouse_pos_backup.x, (double)mouse_pos_backup.y);
+        }
+        else
+        {
+            double mouse_x, mouse_y;
+            glfwGetCursorPos(g_Window, &mouse_x, &mouse_y);
+            io.MousePos = ImVec2((float)mouse_x, (float)mouse_y);
+        }
+    }
+}
+
+static void ImGui_ImplGlfw_UpdateMouseCursor()
+{
+    ImGuiIO& io = ImGui::GetIO();
+    if ((io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange) || glfwGetInputMode(g_Window, GLFW_CURSOR) == GLFW_CURSOR_DISABLED)
+        return;
+
+    ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor();
+    if (imgui_cursor == ImGuiMouseCursor_None || io.MouseDrawCursor)
+    {
+        // Hide OS mouse cursor if imgui is drawing it or if it wants no cursor
+        glfwSetInputMode(g_Window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
+    }
+    else
+    {
+        // Show OS mouse cursor
+        // FIXME-PLATFORM: Unfocused windows seems to fail changing the mouse cursor with GLFW 3.2, but 3.3 works here.
+        glfwSetCursor(g_Window, g_MouseCursors[imgui_cursor] ? g_MouseCursors[imgui_cursor] : g_MouseCursors[ImGuiMouseCursor_Arrow]);
+        glfwSetInputMode(g_Window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
+    }
+}
+
+static void ImGui_ImplGlfw_UpdateGamepads()
+{
+    ImGuiIO& io = ImGui::GetIO();
+    memset(io.NavInputs, 0, sizeof(io.NavInputs));
+    if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0)
+        return;
+
+    // Update gamepad inputs
+    #define MAP_BUTTON(NAV_NO, BUTTON_NO)       { if (buttons_count > BUTTON_NO && buttons[BUTTON_NO] == GLFW_PRESS) io.NavInputs[NAV_NO] = 1.0f; }
+    #define MAP_ANALOG(NAV_NO, AXIS_NO, V0, V1) { float v = (axes_count > AXIS_NO) ? axes[AXIS_NO] : V0; v = (v - V0) / (V1 - V0); if (v > 1.0f) v = 1.0f; if (io.NavInputs[NAV_NO] < v) io.NavInputs[NAV_NO] = v; }
+    int axes_count = 0, buttons_count = 0;
+    const float* axes = glfwGetJoystickAxes(GLFW_JOYSTICK_1, &axes_count);
+    const unsigned char* buttons = glfwGetJoystickButtons(GLFW_JOYSTICK_1, &buttons_count);
+    MAP_BUTTON(ImGuiNavInput_Activate,   0);     // Cross / A
+    MAP_BUTTON(ImGuiNavInput_Cancel,     1);     // Circle / B
+    MAP_BUTTON(ImGuiNavInput_Menu,       2);     // Square / X
+    MAP_BUTTON(ImGuiNavInput_Input,      3);     // Triangle / Y
+    MAP_BUTTON(ImGuiNavInput_DpadLeft,   13);    // D-Pad Left
+    MAP_BUTTON(ImGuiNavInput_DpadRight,  11);    // D-Pad Right
+    MAP_BUTTON(ImGuiNavInput_DpadUp,     10);    // D-Pad Up
+    MAP_BUTTON(ImGuiNavInput_DpadDown,   12);    // D-Pad Down
+    MAP_BUTTON(ImGuiNavInput_FocusPrev,  4);     // L1 / LB
+    MAP_BUTTON(ImGuiNavInput_FocusNext,  5);     // R1 / RB
+    MAP_BUTTON(ImGuiNavInput_TweakSlow,  4);     // L1 / LB
+    MAP_BUTTON(ImGuiNavInput_TweakFast,  5);     // R1 / RB
+    MAP_ANALOG(ImGuiNavInput_LStickLeft, 0,  -0.3f,  -0.9f);
+    MAP_ANALOG(ImGuiNavInput_LStickRight,0,  +0.3f,  +0.9f);
+    MAP_ANALOG(ImGuiNavInput_LStickUp,   1,  +0.3f,  +0.9f);
+    MAP_ANALOG(ImGuiNavInput_LStickDown, 1,  -0.3f,  -0.9f);
+    #undef MAP_BUTTON
+    #undef MAP_ANALOG
+    if (axes_count > 0 && buttons_count > 0)
+        io.BackendFlags |= ImGuiBackendFlags_HasGamepad;
+    else
+        io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
+}
+
+void ImGui_ImplGlfw_NewFrame()
+{
+    ImGuiIO& io = ImGui::GetIO();
+    IM_ASSERT(io.Fonts->IsBuilt() && "Font atlas not built! It is generally built by the renderer back-end. Missing call to renderer _NewFrame() function? e.g. ImGui_ImplOpenGL3_NewFrame().");
+
+    // Setup display size (every frame to accommodate for window resizing)
+    int w, h;
+    int display_w, display_h;
+    glfwGetWindowSize(g_Window, &w, &h);
+    glfwGetFramebufferSize(g_Window, &display_w, &display_h);
+    io.DisplaySize = ImVec2((float)w, (float)h);
+    if (w > 0 && h > 0)
+        io.DisplayFramebufferScale = ImVec2((float)display_w / w, (float)display_h / h);
+
+    // Setup time step
+    double current_time = glfwGetTime();
+    io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f);
+    g_Time = current_time;
+
+    ImGui_ImplGlfw_UpdateMousePosAndButtons();
+    ImGui_ImplGlfw_UpdateMouseCursor();
+
+    // Update game controllers (if enabled and available)
+    ImGui_ImplGlfw_UpdateGamepads();
+}
--- a/include/imgui-1.76/imgui_impl_glfw.h
+++ b/include/imgui-1.76/imgui_impl_glfw.h
@ -0,0 +1,35 @@
+// dear imgui: Platform Binding for GLFW
+// This needs to be used along with a Renderer (e.g. OpenGL3, Vulkan..)
+// (Info: GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.)
+
+// Implemented features:
+//  [X] Platform: Clipboard support.
+//  [X] Platform: Gamepad support. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
+//  [x] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'. FIXME: 3 cursors types are missing from GLFW.
+//  [X] Platform: Keyboard arrays indexed using GLFW_KEY_* codes, e.g. ImGui::IsKeyPressed(GLFW_KEY_SPACE).
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+// About GLSL version:
+// The 'glsl_version' initialization parameter defaults to "#version 150" if NULL.
+// Only override if your GL version doesn't handle this GLSL version. Keep NULL if unsure!
+
+#pragma once
+#include "imgui.h"      // IMGUI_IMPL_API
+
+struct GLFWwindow;
+
+IMGUI_IMPL_API bool     ImGui_ImplGlfw_InitForOpenGL(GLFWwindow* window, bool install_callbacks);
+IMGUI_IMPL_API bool     ImGui_ImplGlfw_InitForVulkan(GLFWwindow* window, bool install_callbacks);
+IMGUI_IMPL_API void     ImGui_ImplGlfw_Shutdown();
+IMGUI_IMPL_API void     ImGui_ImplGlfw_NewFrame();
+
+// GLFW callbacks
+// - When calling Init with 'install_callbacks=true': GLFW callbacks will be installed for you. They will call user's previously installed callbacks, if any.
+// - When calling Init with 'install_callbacks=false': GLFW callbacks won't be installed. You will need to call those function yourself from your own GLFW callbacks.
+IMGUI_IMPL_API void     ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods);
+IMGUI_IMPL_API void     ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset);
+IMGUI_IMPL_API void     ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods);
+IMGUI_IMPL_API void     ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c);
--- a/include/imgui-1.76/imgui_impl_opengl3.cpp
+++ b/include/imgui-1.76/imgui_impl_opengl3.cpp
@ -0,0 +1,688 @@
+// dear imgui: Renderer for modern OpenGL with shaders / programmatic pipeline
+// - Desktop GL: 2.x 3.x 4.x
+// - Embedded GL: ES 2.0 (WebGL 1.0), ES 3.0 (WebGL 2.0)
+// This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID!
+//  [x] Renderer: Desktop GL only: Support for large meshes (64k+ vertices) with 16-bit indices.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+// CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2020-04-12: OpenGL: Fixed context version check mistakenly testing for 4.0+ instead of 3.2+ to enable ImGuiBackendFlags_RendererHasVtxOffset.
+//  2020-03-24: OpenGL: Added support for glbinding 2.x OpenGL loader.
+//  2020-01-07: OpenGL: Added support for glbinding 3.x OpenGL loader.
+//  2019-10-25: OpenGL: Using a combination of GL define and runtime GL version to decide whether to use glDrawElementsBaseVertex(). Fix building with pre-3.2 GL loaders.
+//  2019-09-22: OpenGL: Detect default GL loader using __has_include compiler facility.
+//  2019-09-16: OpenGL: Tweak initialization code to allow application calling ImGui_ImplOpenGL3_CreateFontsTexture() before the first NewFrame() call.
+//  2019-05-29: OpenGL: Desktop GL only: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
+//  2019-04-30: OpenGL: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
+//  2019-03-29: OpenGL: Not calling glBindBuffer more than necessary in the render loop.
+//  2019-03-15: OpenGL: Added a dummy GL call + comments in ImGui_ImplOpenGL3_Init() to detect uninitialized GL function loaders early.
+//  2019-03-03: OpenGL: Fix support for ES 2.0 (WebGL 1.0).
+//  2019-02-20: OpenGL: Fix for OSX not supporting OpenGL 4.5, we don't try to read GL_CLIP_ORIGIN even if defined by the headers/loader.
+//  2019-02-11: OpenGL: Projecting clipping rectangles correctly using draw_data->FramebufferScale to allow multi-viewports for retina display.
+//  2019-02-01: OpenGL: Using GLSL 410 shaders for any version over 410 (e.g. 430, 450).
+//  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
+//  2018-11-13: OpenGL: Support for GL 4.5's glClipControl(GL_UPPER_LEFT) / GL_CLIP_ORIGIN.
+//  2018-08-29: OpenGL: Added support for more OpenGL loaders: glew and glad, with comments indicative that any loader can be used.
+//  2018-08-09: OpenGL: Default to OpenGL ES 3 on iOS and Android. GLSL version default to "#version 300 ES".
+//  2018-07-30: OpenGL: Support for GLSL 300 ES and 410 core. Fixes for Emscripten compilation.
+//  2018-07-10: OpenGL: Support for more GLSL versions (based on the GLSL version string). Added error output when shaders fail to compile/link.
+//  2018-06-08: Misc: Extracted imgui_impl_opengl3.cpp/.h away from the old combined GLFW/SDL+OpenGL3 examples.
+//  2018-06-08: OpenGL: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
+//  2018-05-25: OpenGL: Removed unnecessary backup/restore of GL_ELEMENT_ARRAY_BUFFER_BINDING since this is part of the VAO state.
+//  2018-05-14: OpenGL: Making the call to glBindSampler() optional so 3.2 context won't fail if the function is a NULL pointer.
+//  2018-03-06: OpenGL: Added const char* glsl_version parameter to ImGui_ImplOpenGL3_Init() so user can override the GLSL version e.g. "#version 150".
+//  2018-02-23: OpenGL: Create the VAO in the render function so the setup can more easily be used with multiple shared GL context.
+//  2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplSdlGL3_RenderDrawData() in the .h file so you can call it yourself.
+//  2018-01-07: OpenGL: Changed GLSL shader version from 330 to 150.
+//  2017-09-01: OpenGL: Save and restore current bound sampler. Save and restore current polygon mode.
+//  2017-05-01: OpenGL: Fixed save and restore of current blend func state.
+//  2017-05-01: OpenGL: Fixed save and restore of current GL_ACTIVE_TEXTURE.
+//  2016-09-05: OpenGL: Fixed save and restore of current scissor rectangle.
+//  2016-07-29: OpenGL: Explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
+
+//----------------------------------------
+// OpenGL    GLSL      GLSL
+// version   version   string
+//----------------------------------------
+//  2.0       110       "#version 110"
+//  2.1       120       "#version 120"
+//  3.0       130       "#version 130"
+//  3.1       140       "#version 140"
+//  3.2       150       "#version 150"
+//  3.3       330       "#version 330 core"
+//  4.0       400       "#version 400 core"
+//  4.1       410       "#version 410 core"
+//  4.2       420       "#version 410 core"
+//  4.3       430       "#version 430 core"
+//  ES 2.0    100       "#version 100"      = WebGL 1.0
+//  ES 3.0    300       "#version 300 es"   = WebGL 2.0
+//----------------------------------------
+
+#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
+#define _CRT_SECURE_NO_WARNINGS
+#endif
+
+#include "imgui.h"
+#include "imgui_impl_opengl3.h"
+#include <stdio.h>
+#if defined(_MSC_VER) && _MSC_VER <= 1500 // MSVC 2008 or earlier
+#include <stddef.h>     // intptr_t
+#else
+#include <stdint.h>     // intptr_t
+#endif
+#if defined(__APPLE__)
+#include "TargetConditionals.h"
+#endif
+
+// Auto-enable GLES on matching platforms
+#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3)
+#if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV)) || (defined(__ANDROID__))
+#define IMGUI_IMPL_OPENGL_ES3           // iOS, Android  -> GL ES 3, "#version 300 es"
+#elif defined(__EMSCRIPTEN__)
+#define IMGUI_IMPL_OPENGL_ES2           // Emscripten    -> GL ES 2, "#version 100"
+#endif
+#endif
+
+#if defined(IMGUI_IMPL_OPENGL_ES2) || defined(IMGUI_IMPL_OPENGL_ES3)
+#undef IMGUI_IMPL_OPENGL_LOADER_GL3W
+#undef IMGUI_IMPL_OPENGL_LOADER_GLEW
+#undef IMGUI_IMPL_OPENGL_LOADER_GLAD
+#undef IMGUI_IMPL_OPENGL_LOADER_GLBINDING2
+#undef IMGUI_IMPL_OPENGL_LOADER_GLBINDING3
+#undef IMGUI_IMPL_OPENGL_LOADER_CUSTOM
+#endif
+
+// GL includes
+#if defined(IMGUI_IMPL_OPENGL_ES2)
+#include <GLES2/gl2.h>
+#elif defined(IMGUI_IMPL_OPENGL_ES3)
+#if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV))
+#include <OpenGLES/ES3/gl.h>    // Use GL ES 3
+#else
+#include <GLES3/gl3.h>          // Use GL ES 3
+#endif
+#else
+// About Desktop OpenGL function loaders:
+//  Modern desktop OpenGL doesn't have a standard portable header file to load OpenGL function pointers.
+//  Helper libraries are often used for this purpose! Here we are supporting a few common ones (gl3w, glew, glad).
+//  You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
+#if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
+#include <GL/gl3w.h>            // Needs to be initialized with gl3wInit() in user's code
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
+#include <GL/glew.h>            // Needs to be initialized with glewInit() in user's code.
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
+#include <glad/glad.h>          // Needs to be initialized with gladLoadGL() in user's code.
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING2)
+#define GLFW_INCLUDE_NONE       // GLFW including OpenGL headers causes ambiguity or multiple definition errors.
+#include <glbinding/Binding.h>  // Needs to be initialized with glbinding::Binding::initialize() in user's code.
+#include <glbinding/gl/gl.h>
+using namespace gl;
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING3)
+#define GLFW_INCLUDE_NONE       // GLFW including OpenGL headers causes ambiguity or multiple definition errors.
+#include <glbinding/glbinding.h>// Needs to be initialized with glbinding::initialize() in user's code.
+#include <glbinding/gl/gl.h>
+using namespace gl;
+#else
+#include IMGUI_IMPL_OPENGL_LOADER_CUSTOM
+#endif
+#endif
+
+// Desktop GL 3.2+ has glDrawElementsBaseVertex() which GL ES and WebGL don't have.
+#if defined(IMGUI_IMPL_OPENGL_ES2) || defined(IMGUI_IMPL_OPENGL_ES3) || !defined(GL_VERSION_3_2)
+#define IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET   0
+#else
+#define IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET   1
+#endif
+
+// OpenGL Data
+static GLuint       g_GlVersion = 0;                // Extracted at runtime using GL_MAJOR_VERSION, GL_MINOR_VERSION queries (e.g. 320 for GL 3.2)
+static char         g_GlslVersionString[32] = "";   // Specified by user or detected based on compile time GL settings.
+static GLuint       g_FontTexture = 0;
+static GLuint       g_ShaderHandle = 0, g_VertHandle = 0, g_FragHandle = 0;
+static int          g_AttribLocationTex = 0, g_AttribLocationProjMtx = 0;                                // Uniforms location
+static int          g_AttribLocationVtxPos = 0, g_AttribLocationVtxUV = 0, g_AttribLocationVtxColor = 0; // Vertex attributes location
+static unsigned int g_VboHandle = 0, g_ElementsHandle = 0;
+
+// Functions
+bool    ImGui_ImplOpenGL3_Init(const char* glsl_version)
+{
+    // Query for GL version (e.g. 320 for GL 3.2)
+#if !defined(IMGUI_IMPL_OPENGL_ES2)
+    GLint major, minor;
+    glGetIntegerv(GL_MAJOR_VERSION, &major);
+    glGetIntegerv(GL_MINOR_VERSION, &minor);
+    g_GlVersion = major * 100 + minor * 10;
+#else
+    g_GlVersion = 200; // GLES 2
+#endif
+
+    // Setup back-end capabilities flags
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendRendererName = "imgui_impl_opengl3";
+#if IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
+    if (g_GlVersion >= 320)
+        io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+#endif
+
+    // Store GLSL version string so we can refer to it later in case we recreate shaders.
+    // Note: GLSL version is NOT the same as GL version. Leave this to NULL if unsure.
+#if defined(IMGUI_IMPL_OPENGL_ES2)
+    if (glsl_version == NULL)
+        glsl_version = "#version 100";
+#elif defined(IMGUI_IMPL_OPENGL_ES3)
+    if (glsl_version == NULL)
+        glsl_version = "#version 300 es";
+#else
+    if (glsl_version == NULL)
+        glsl_version = "#version 130";
+#endif
+    IM_ASSERT((int)strlen(glsl_version) + 2 < IM_ARRAYSIZE(g_GlslVersionString));
+    strcpy(g_GlslVersionString, glsl_version);
+    strcat(g_GlslVersionString, "\n");
+
+    // Dummy construct to make it easily visible in the IDE and debugger which GL loader has been selected.
+    // The code actually never uses the 'gl_loader' variable! It is only here so you can read it!
+    // If auto-detection fails or doesn't select the same GL loader file as used by your application,
+    // you are likely to get a crash below.
+    // You can explicitly select a loader by using '#define IMGUI_IMPL_OPENGL_LOADER_XXX' in imconfig.h or compiler command-line.
+    const char* gl_loader = "Unknown";
+    IM_UNUSED(gl_loader);
+#if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
+    gl_loader = "GL3W";
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
+    gl_loader = "GLEW";
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
+    gl_loader = "GLAD";
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING2)
+    gl_loader = "glbinding2";
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING3)
+    gl_loader = "glbinding3";
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_CUSTOM)
+    gl_loader = "custom";
+#else
+    gl_loader = "none";
+#endif
+
+    // Make a dummy GL call (we don't actually need the result)
+    // IF YOU GET A CRASH HERE: it probably means that you haven't initialized the OpenGL function loader used by this code.
+    // Desktop OpenGL 3/4 need a function loader. See the IMGUI_IMPL_OPENGL_LOADER_xxx explanation above.
+    GLint current_texture;
+    glGetIntegerv(GL_TEXTURE_BINDING_2D, &current_texture);
+
+    return true;
+}
+
+void    ImGui_ImplOpenGL3_Shutdown()
+{
+    ImGui_ImplOpenGL3_DestroyDeviceObjects();
+}
+
+void    ImGui_ImplOpenGL3_NewFrame()
+{
+    if (!g_ShaderHandle)
+        ImGui_ImplOpenGL3_CreateDeviceObjects();
+}
+
+static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_width, int fb_height, GLuint vertex_array_object)
+{
+    // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+    glEnable(GL_BLEND);
+    glBlendEquation(GL_FUNC_ADD);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    glDisable(GL_CULL_FACE);
+    glDisable(GL_DEPTH_TEST);
+    glEnable(GL_SCISSOR_TEST);
+#ifdef GL_POLYGON_MODE
+    glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+#endif
+
+    // Setup viewport, orthographic projection matrix
+    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
+    glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height);
+    float L = draw_data->DisplayPos.x;
+    float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x;
+    float T = draw_data->DisplayPos.y;
+    float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y;
+    const float ortho_projection[4][4] =
+    {
+        { 2.0f/(R-L),   0.0f,         0.0f,   0.0f },
+        { 0.0f,         2.0f/(T-B),   0.0f,   0.0f },
+        { 0.0f,         0.0f,        -1.0f,   0.0f },
+        { (R+L)/(L-R),  (T+B)/(B-T),  0.0f,   1.0f },
+    };
+    glUseProgram(g_ShaderHandle);
+    glUniform1i(g_AttribLocationTex, 0);
+    glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
+#ifdef GL_SAMPLER_BINDING
+    glBindSampler(0, 0); // We use combined texture/sampler state. Applications using GL 3.3 may set that otherwise.
+#endif
+
+    (void)vertex_array_object;
+#ifndef IMGUI_IMPL_OPENGL_ES2
+    glBindVertexArray(vertex_array_object);
+#endif
+
+    // Bind vertex/index buffers and setup attributes for ImDrawVert
+    glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+    glEnableVertexAttribArray(g_AttribLocationVtxPos);
+    glEnableVertexAttribArray(g_AttribLocationVtxUV);
+    glEnableVertexAttribArray(g_AttribLocationVtxColor);
+    glVertexAttribPointer(g_AttribLocationVtxPos,   2, GL_FLOAT,         GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, pos));
+    glVertexAttribPointer(g_AttribLocationVtxUV,    2, GL_FLOAT,         GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, uv));
+    glVertexAttribPointer(g_AttribLocationVtxColor, 4, GL_UNSIGNED_BYTE, GL_TRUE,  sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, col));
+}
+
+// OpenGL3 Render function.
+// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
+// Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly, in order to be able to run within any OpenGL engine that doesn't do so.
+void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
+{
+    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
+    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
+    if (fb_width <= 0 || fb_height <= 0)
+        return;
+
+    // Backup GL state
+    GLenum last_active_texture; glGetIntegerv(GL_ACTIVE_TEXTURE, (GLint*)&last_active_texture);
+    glActiveTexture(GL_TEXTURE0);
+    GLint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
+    GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+#ifdef GL_SAMPLER_BINDING
+    GLint last_sampler; glGetIntegerv(GL_SAMPLER_BINDING, &last_sampler);
+#endif
+    GLint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
+#ifndef IMGUI_IMPL_OPENGL_ES2
+    GLint last_vertex_array_object; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array_object);
+#endif
+#ifdef GL_POLYGON_MODE
+    GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+#endif
+    GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
+    GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box);
+    GLenum last_blend_src_rgb; glGetIntegerv(GL_BLEND_SRC_RGB, (GLint*)&last_blend_src_rgb);
+    GLenum last_blend_dst_rgb; glGetIntegerv(GL_BLEND_DST_RGB, (GLint*)&last_blend_dst_rgb);
+    GLenum last_blend_src_alpha; glGetIntegerv(GL_BLEND_SRC_ALPHA, (GLint*)&last_blend_src_alpha);
+    GLenum last_blend_dst_alpha; glGetIntegerv(GL_BLEND_DST_ALPHA, (GLint*)&last_blend_dst_alpha);
+    GLenum last_blend_equation_rgb; glGetIntegerv(GL_BLEND_EQUATION_RGB, (GLint*)&last_blend_equation_rgb);
+    GLenum last_blend_equation_alpha; glGetIntegerv(GL_BLEND_EQUATION_ALPHA, (GLint*)&last_blend_equation_alpha);
+    GLboolean last_enable_blend = glIsEnabled(GL_BLEND);
+    GLboolean last_enable_cull_face = glIsEnabled(GL_CULL_FACE);
+    GLboolean last_enable_depth_test = glIsEnabled(GL_DEPTH_TEST);
+    GLboolean last_enable_scissor_test = glIsEnabled(GL_SCISSOR_TEST);
+    bool clip_origin_lower_left = true;
+#if defined(GL_CLIP_ORIGIN) && !defined(__APPLE__)
+    GLenum last_clip_origin = 0; glGetIntegerv(GL_CLIP_ORIGIN, (GLint*)&last_clip_origin); // Support for GL 4.5's glClipControl(GL_UPPER_LEFT)
+    if (last_clip_origin == GL_UPPER_LEFT)
+        clip_origin_lower_left = false;
+#endif
+
+    // Setup desired GL state
+    // Recreate the VAO every time (this is to easily allow multiple GL contexts to be rendered to. VAO are not shared among GL contexts)
+    // The renderer would actually work without any VAO bound, but then our VertexAttrib calls would overwrite the default one currently bound.
+    GLuint vertex_array_object = 0;
+#ifndef IMGUI_IMPL_OPENGL_ES2
+    glGenVertexArrays(1, &vertex_array_object);
+#endif
+    ImGui_ImplOpenGL3_SetupRenderState(draw_data, fb_width, fb_height, vertex_array_object);
+
+    // Will project scissor/clipping rectangles into framebuffer space
+    ImVec2 clip_off = draw_data->DisplayPos;         // (0,0) unless using multi-viewports
+    ImVec2 clip_scale = draw_data->FramebufferScale; // (1,1) unless using retina display which are often (2,2)
+
+    // Render command lists
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+
+        // Upload vertex/index buffers
+        glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)cmd_list->VtxBuffer.Size * sizeof(ImDrawVert), (const GLvoid*)cmd_list->VtxBuffer.Data, GL_STREAM_DRAW);
+        glBufferData(GL_ELEMENT_ARRAY_BUFFER, (GLsizeiptr)cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx), (const GLvoid*)cmd_list->IdxBuffer.Data, GL_STREAM_DRAW);
+
+        for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
+        {
+            const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
+            if (pcmd->UserCallback != NULL)
+            {
+                // User callback, registered via ImDrawList::AddCallback()
+                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
+                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                    ImGui_ImplOpenGL3_SetupRenderState(draw_data, fb_width, fb_height, vertex_array_object);
+                else
+                    pcmd->UserCallback(cmd_list, pcmd);
+            }
+            else
+            {
+                // Project scissor/clipping rectangles into framebuffer space
+                ImVec4 clip_rect;
+                clip_rect.x = (pcmd->ClipRect.x - clip_off.x) * clip_scale.x;
+                clip_rect.y = (pcmd->ClipRect.y - clip_off.y) * clip_scale.y;
+                clip_rect.z = (pcmd->ClipRect.z - clip_off.x) * clip_scale.x;
+                clip_rect.w = (pcmd->ClipRect.w - clip_off.y) * clip_scale.y;
+
+                if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0f && clip_rect.w >= 0.0f)
+                {
+                    // Apply scissor/clipping rectangle
+                    if (clip_origin_lower_left)
+                        glScissor((int)clip_rect.x, (int)(fb_height - clip_rect.w), (int)(clip_rect.z - clip_rect.x), (int)(clip_rect.w - clip_rect.y));
+                    else
+                        glScissor((int)clip_rect.x, (int)clip_rect.y, (int)clip_rect.z, (int)clip_rect.w); // Support for GL 4.5 rarely used glClipControl(GL_UPPER_LEFT)
+
+                    // Bind texture, Draw
+                    glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
+#if IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
+                    if (g_GlVersion >= 320)
+                        glDrawElementsBaseVertex(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)), (GLint)pcmd->VtxOffset);
+                    else
+#endif
+                    glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)));
+                }
+            }
+        }
+    }
+
+    // Destroy the temporary VAO
+#ifndef IMGUI_IMPL_OPENGL_ES2
+    glDeleteVertexArrays(1, &vertex_array_object);
+#endif
+
+    // Restore modified GL state
+    glUseProgram(last_program);
+    glBindTexture(GL_TEXTURE_2D, last_texture);
+#ifdef GL_SAMPLER_BINDING
+    glBindSampler(0, last_sampler);
+#endif
+    glActiveTexture(last_active_texture);
+#ifndef IMGUI_IMPL_OPENGL_ES2
+    glBindVertexArray(last_vertex_array_object);
+#endif
+    glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
+    glBlendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+    glBlendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+    if (last_enable_blend) glEnable(GL_BLEND); else glDisable(GL_BLEND);
+    if (last_enable_cull_face) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE);
+    if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
+    if (last_enable_scissor_test) glEnable(GL_SCISSOR_TEST); else glDisable(GL_SCISSOR_TEST);
+#ifdef GL_POLYGON_MODE
+    glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+#endif
+    glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
+    glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]);
+}
+
+bool ImGui_ImplOpenGL3_CreateFontsTexture()
+{
+    // Build texture atlas
+    ImGuiIO& io = ImGui::GetIO();
+    unsigned char* pixels;
+    int width, height;
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);   // Load as RGBA 32-bit (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+
+    // Upload texture to graphics system
+    GLint last_texture;
+    glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+    glGenTextures(1, &g_FontTexture);
+    glBindTexture(GL_TEXTURE_2D, g_FontTexture);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+#ifdef GL_UNPACK_ROW_LENGTH
+    glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+#endif
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
+
+    // Store our identifier
+    io.Fonts->TexID = (ImTextureID)(intptr_t)g_FontTexture;
+
+    // Restore state
+    glBindTexture(GL_TEXTURE_2D, last_texture);
+
+    return true;
+}
+
+void ImGui_ImplOpenGL3_DestroyFontsTexture()
+{
+    if (g_FontTexture)
+    {
+        ImGuiIO& io = ImGui::GetIO();
+        glDeleteTextures(1, &g_FontTexture);
+        io.Fonts->TexID = 0;
+        g_FontTexture = 0;
+    }
+}
+
+// If you get an error please report on github. You may try different GL context version or GLSL version. See GL<>GLSL version table at the top of this file.
+static bool CheckShader(GLuint handle, const char* desc)
+{
+    GLint status = 0, log_length = 0;
+    glGetShaderiv(handle, GL_COMPILE_STATUS, &status);
+    glGetShaderiv(handle, GL_INFO_LOG_LENGTH, &log_length);
+    if ((GLboolean)status == GL_FALSE)
+        fprintf(stderr, "ERROR: ImGui_ImplOpenGL3_CreateDeviceObjects: failed to compile %s!\n", desc);
+    if (log_length > 1)
+    {
+        ImVector<char> buf;
+        buf.resize((int)(log_length + 1));
+        glGetShaderInfoLog(handle, log_length, NULL, (GLchar*)buf.begin());
+        fprintf(stderr, "%s\n", buf.begin());
+    }
+    return (GLboolean)status == GL_TRUE;
+}
+
+// If you get an error please report on GitHub. You may try different GL context version or GLSL version.
+static bool CheckProgram(GLuint handle, const char* desc)
+{
+    GLint status = 0, log_length = 0;
+    glGetProgramiv(handle, GL_LINK_STATUS, &status);
+    glGetProgramiv(handle, GL_INFO_LOG_LENGTH, &log_length);
+    if ((GLboolean)status == GL_FALSE)
+        fprintf(stderr, "ERROR: ImGui_ImplOpenGL3_CreateDeviceObjects: failed to link %s! (with GLSL '%s')\n", desc, g_GlslVersionString);
+    if (log_length > 1)
+    {
+        ImVector<char> buf;
+        buf.resize((int)(log_length + 1));
+        glGetProgramInfoLog(handle, log_length, NULL, (GLchar*)buf.begin());
+        fprintf(stderr, "%s\n", buf.begin());
+    }
+    return (GLboolean)status == GL_TRUE;
+}
+
+bool    ImGui_ImplOpenGL3_CreateDeviceObjects()
+{
+    // Backup GL state
+    GLint last_texture, last_array_buffer;
+    glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+    glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
+#ifndef IMGUI_IMPL_OPENGL_ES2
+    GLint last_vertex_array;
+    glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
+#endif
+
+    // Parse GLSL version string
+    int glsl_version = 130;
+    sscanf(g_GlslVersionString, "#version %d", &glsl_version);
+
+    const GLchar* vertex_shader_glsl_120 =
+        "uniform mat4 ProjMtx;\n"
+        "attribute vec2 Position;\n"
+        "attribute vec2 UV;\n"
+        "attribute vec4 Color;\n"
+        "varying vec2 Frag_UV;\n"
+        "varying vec4 Frag_Color;\n"
+        "void main()\n"
+        "{\n"
+        "    Frag_UV = UV;\n"
+        "    Frag_Color = Color;\n"
+        "    gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
+        "}\n";
+
+    const GLchar* vertex_shader_glsl_130 =
+        "uniform mat4 ProjMtx;\n"
+        "in vec2 Position;\n"
+        "in vec2 UV;\n"
+        "in vec4 Color;\n"
+        "out vec2 Frag_UV;\n"
+        "out vec4 Frag_Color;\n"
+        "void main()\n"
+        "{\n"
+        "    Frag_UV = UV;\n"
+        "    Frag_Color = Color;\n"
+        "    gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
+        "}\n";
+
+    const GLchar* vertex_shader_glsl_300_es =
+        "precision mediump float;\n"
+        "layout (location = 0) in vec2 Position;\n"
+        "layout (location = 1) in vec2 UV;\n"
+        "layout (location = 2) in vec4 Color;\n"
+        "uniform mat4 ProjMtx;\n"
+        "out vec2 Frag_UV;\n"
+        "out vec4 Frag_Color;\n"
+        "void main()\n"
+        "{\n"
+        "    Frag_UV = UV;\n"
+        "    Frag_Color = Color;\n"
+        "    gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
+        "}\n";
+
+    const GLchar* vertex_shader_glsl_410_core =
+        "layout (location = 0) in vec2 Position;\n"
+        "layout (location = 1) in vec2 UV;\n"
+        "layout (location = 2) in vec4 Color;\n"
+        "uniform mat4 ProjMtx;\n"
+        "out vec2 Frag_UV;\n"
+        "out vec4 Frag_Color;\n"
+        "void main()\n"
+        "{\n"
+        "    Frag_UV = UV;\n"
+        "    Frag_Color = Color;\n"
+        "    gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
+        "}\n";
+
+    const GLchar* fragment_shader_glsl_120 =
+        "#ifdef GL_ES\n"
+        "    precision mediump float;\n"
+        "#endif\n"
+        "uniform sampler2D Texture;\n"
+        "varying vec2 Frag_UV;\n"
+        "varying vec4 Frag_Color;\n"
+        "void main()\n"
+        "{\n"
+        "    gl_FragColor = Frag_Color * texture2D(Texture, Frag_UV.st);\n"
+        "}\n";
+
+    const GLchar* fragment_shader_glsl_130 =
+        "uniform sampler2D Texture;\n"
+        "in vec2 Frag_UV;\n"
+        "in vec4 Frag_Color;\n"
+        "out vec4 Out_Color;\n"
+        "void main()\n"
+        "{\n"
+        "    Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
+        "}\n";
+
+    const GLchar* fragment_shader_glsl_300_es =
+        "precision mediump float;\n"
+        "uniform sampler2D Texture;\n"
+        "in vec2 Frag_UV;\n"
+        "in vec4 Frag_Color;\n"
+        "layout (location = 0) out vec4 Out_Color;\n"
+        "void main()\n"
+        "{\n"
+        "    Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
+        "}\n";
+
+    const GLchar* fragment_shader_glsl_410_core =
+        "in vec2 Frag_UV;\n"
+        "in vec4 Frag_Color;\n"
+        "uniform sampler2D Texture;\n"
+        "layout (location = 0) out vec4 Out_Color;\n"
+        "void main()\n"
+        "{\n"
+        "    Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
+        "}\n";
+
+    // Select shaders matching our GLSL versions
+    const GLchar* vertex_shader = NULL;
+    const GLchar* fragment_shader = NULL;
+    if (glsl_version < 130)
+    {
+        vertex_shader = vertex_shader_glsl_120;
+        fragment_shader = fragment_shader_glsl_120;
+    }
+    else if (glsl_version >= 410)
+    {
+        vertex_shader = vertex_shader_glsl_410_core;
+        fragment_shader = fragment_shader_glsl_410_core;
+    }
+    else if (glsl_version == 300)
+    {
+        vertex_shader = vertex_shader_glsl_300_es;
+        fragment_shader = fragment_shader_glsl_300_es;
+    }
+    else
+    {
+        vertex_shader = vertex_shader_glsl_130;
+        fragment_shader = fragment_shader_glsl_130;
+    }
+
+    // Create shaders
+    const GLchar* vertex_shader_with_version[2] = { g_GlslVersionString, vertex_shader };
+    g_VertHandle = glCreateShader(GL_VERTEX_SHADER);
+    glShaderSource(g_VertHandle, 2, vertex_shader_with_version, NULL);
+    glCompileShader(g_VertHandle);
+    CheckShader(g_VertHandle, "vertex shader");
+
+    const GLchar* fragment_shader_with_version[2] = { g_GlslVersionString, fragment_shader };
+    g_FragHandle = glCreateShader(GL_FRAGMENT_SHADER);
+    glShaderSource(g_FragHandle, 2, fragment_shader_with_version, NULL);
+    glCompileShader(g_FragHandle);
+    CheckShader(g_FragHandle, "fragment shader");
+
+    g_ShaderHandle = glCreateProgram();
+    glAttachShader(g_ShaderHandle, g_VertHandle);
+    glAttachShader(g_ShaderHandle, g_FragHandle);
+    glLinkProgram(g_ShaderHandle);
+    CheckProgram(g_ShaderHandle, "shader program");
+
+    g_AttribLocationTex = glGetUniformLocation(g_ShaderHandle, "Texture");
+    g_AttribLocationProjMtx = glGetUniformLocation(g_ShaderHandle, "ProjMtx");
+    g_AttribLocationVtxPos = glGetAttribLocation(g_ShaderHandle, "Position");
+    g_AttribLocationVtxUV = glGetAttribLocation(g_ShaderHandle, "UV");
+    g_AttribLocationVtxColor = glGetAttribLocation(g_ShaderHandle, "Color");
+
+    // Create buffers
+    glGenBuffers(1, &g_VboHandle);
+    glGenBuffers(1, &g_ElementsHandle);
+
+    ImGui_ImplOpenGL3_CreateFontsTexture();
+
+    // Restore modified GL state
+    glBindTexture(GL_TEXTURE_2D, last_texture);
+    glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
+#ifndef IMGUI_IMPL_OPENGL_ES2
+    glBindVertexArray(last_vertex_array);
+#endif
+
+    return true;
+}
+
+void    ImGui_ImplOpenGL3_DestroyDeviceObjects()
+{
+    if (g_VboHandle)        { glDeleteBuffers(1, &g_VboHandle); g_VboHandle = 0; }
+    if (g_ElementsHandle)   { glDeleteBuffers(1, &g_ElementsHandle); g_ElementsHandle = 0; }
+    if (g_ShaderHandle && g_VertHandle) { glDetachShader(g_ShaderHandle, g_VertHandle); }
+    if (g_ShaderHandle && g_FragHandle) { glDetachShader(g_ShaderHandle, g_FragHandle); }
+    if (g_VertHandle)       { glDeleteShader(g_VertHandle); g_VertHandle = 0; }
+    if (g_FragHandle)       { glDeleteShader(g_FragHandle); g_FragHandle = 0; }
+    if (g_ShaderHandle)     { glDeleteProgram(g_ShaderHandle); g_ShaderHandle = 0; }
+
+    ImGui_ImplOpenGL3_DestroyFontsTexture();
+}
--- a/include/imgui-1.76/imgui_impl_opengl3.h
+++ b/include/imgui-1.76/imgui_impl_opengl3.h
@ -0,0 +1,71 @@
+// dear imgui: Renderer for modern OpenGL with shaders / programmatic pipeline
+// - Desktop GL: 2.x 3.x 4.x
+// - Embedded GL: ES 2.0 (WebGL 1.0), ES 3.0 (WebGL 2.0)
+// This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID!
+//  [x] Renderer: Desktop GL only: Support for large meshes (64k+ vertices) with 16-bit indices.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+// About Desktop OpenGL function loaders:
+//  Modern desktop OpenGL doesn't have a standard portable header file to load OpenGL function pointers.
+//  Helper libraries are often used for this purpose! Here we are supporting a few common ones (gl3w, glew, glad).
+//  You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
+
+// About GLSL version:
+//  The 'glsl_version' initialization parameter should be NULL (default) or a "#version XXX" string.
+//  On computer platform the GLSL version default to "#version 130". On OpenGL ES 3 platform it defaults to "#version 300 es"
+//  Only override if your GL version doesn't handle this GLSL version. See GLSL version table at the top of imgui_impl_opengl3.cpp.
+
+#pragma once
+#include "imgui.h"      // IMGUI_IMPL_API
+
+// Backend API
+IMGUI_IMPL_API bool     ImGui_ImplOpenGL3_Init(const char* glsl_version = NULL);
+IMGUI_IMPL_API void     ImGui_ImplOpenGL3_Shutdown();
+IMGUI_IMPL_API void     ImGui_ImplOpenGL3_NewFrame();
+IMGUI_IMPL_API void     ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data);
+
+// (Optional) Called by Init/NewFrame/Shutdown
+IMGUI_IMPL_API bool     ImGui_ImplOpenGL3_CreateFontsTexture();
+IMGUI_IMPL_API void     ImGui_ImplOpenGL3_DestroyFontsTexture();
+IMGUI_IMPL_API bool     ImGui_ImplOpenGL3_CreateDeviceObjects();
+IMGUI_IMPL_API void     ImGui_ImplOpenGL3_DestroyDeviceObjects();
+
+// Specific OpenGL versions
+//#define IMGUI_IMPL_OPENGL_ES2     // Auto-detected on Emscripten
+//#define IMGUI_IMPL_OPENGL_ES3     // Auto-detected on iOS/Android
+
+// Desktop OpenGL: attempt to detect default GL loader based on available header files.
+// If auto-detection fails or doesn't select the same GL loader file as used by your application,
+// you are likely to get a crash in ImGui_ImplOpenGL3_Init().
+// You can explicitly select a loader by using '#define IMGUI_IMPL_OPENGL_LOADER_XXX' in imconfig.h or compiler command-line.
+#if !defined(IMGUI_IMPL_OPENGL_LOADER_GL3W) \
+ && !defined(IMGUI_IMPL_OPENGL_LOADER_GLEW) \
+ && !defined(IMGUI_IMPL_OPENGL_LOADER_GLAD) \
+ && !defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING2) \
+ && !defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING3) \
+ && !defined(IMGUI_IMPL_OPENGL_LOADER_CUSTOM)
+    #if defined(__has_include)
+        #if __has_include(<GL/glew.h>)
+            #define IMGUI_IMPL_OPENGL_LOADER_GLEW
+        #elif __has_include(<glad/glad.h>)
+            #define IMGUI_IMPL_OPENGL_LOADER_GLAD
+        #elif __has_include(<GL/gl3w.h>)
+            #define IMGUI_IMPL_OPENGL_LOADER_GL3W
+        #elif __has_include(<glbinding/glbinding.h>)
+            #define IMGUI_IMPL_OPENGL_LOADER_GLBINDING3
+        #elif __has_include(<glbinding/Binding.h>)
+            #define IMGUI_IMPL_OPENGL_LOADER_GLBINDING2
+        #else
+            #error "Cannot detect OpenGL loader!"
+        #endif
+    #else
+        #define IMGUI_IMPL_OPENGL_LOADER_GL3W       // Default to GL3W
+    #endif
+#endif
+
--- a/include/imgui-1.76/imgui_internal.h
+++ b/include/imgui-1.76/imgui_internal.h
--- a/include/imgui-1.76/imgui_widgets.cpp
+++ b/include/imgui-1.76/imgui_widgets.cpp
--- a/include/imgui-1.76/imstb_rectpack.h
+++ b/include/imgui-1.76/imstb_rectpack.h
@ -0,0 +1,639 @@
+// [DEAR IMGUI]
+// This is a slightly modified version of stb_rect_pack.h 1.00.
+// Those changes would need to be pushed into nothings/stb:
+// - Added STBRP__CDECL
+// Grep for [DEAR IMGUI] to find the changes.
+
+// stb_rect_pack.h - v1.00 - public domain - rectangle packing
+// Sean Barrett 2014
+//
+// Useful for e.g. packing rectangular textures into an atlas.
+// Does not do rotation.
+//
+// Not necessarily the awesomest packing method, but better than
+// the totally naive one in stb_truetype (which is primarily what
+// this is meant to replace).
+//
+// Has only had a few tests run, may have issues.
+//
+// More docs to come.
+//
+// No memory allocations; uses qsort() and assert() from stdlib.
+// Can override those by defining STBRP_SORT and STBRP_ASSERT.
+//
+// This library currently uses the Skyline Bottom-Left algorithm.
+//
+// Please note: better rectangle packers are welcome! Please
+// implement them to the same API, but with a different init
+// function.
+//
+// Credits
+//
+//  Library
+//    Sean Barrett
+//  Minor features
+//    Martins Mozeiko
+//    github:IntellectualKitty
+//    
+//  Bugfixes / warning fixes
+//    Jeremy Jaussaud
+//    Fabian Giesen
+//
+// Version history:
+//
+//     1.00  (2019-02-25)  avoid small space waste; gracefully fail too-wide rectangles
+//     0.99  (2019-02-07)  warning fixes
+//     0.11  (2017-03-03)  return packing success/fail result
+//     0.10  (2016-10-25)  remove cast-away-const to avoid warnings
+//     0.09  (2016-08-27)  fix compiler warnings
+//     0.08  (2015-09-13)  really fix bug with empty rects (w=0 or h=0)
+//     0.07  (2015-09-13)  fix bug with empty rects (w=0 or h=0)
+//     0.06  (2015-04-15)  added STBRP_SORT to allow replacing qsort
+//     0.05:  added STBRP_ASSERT to allow replacing assert
+//     0.04:  fixed minor bug in STBRP_LARGE_RECTS support
+//     0.01:  initial release
+//
+// LICENSE
+//
+//   See end of file for license information.
+
+//////////////////////////////////////////////////////////////////////////////
+//
+//       INCLUDE SECTION
+//
+
+#ifndef STB_INCLUDE_STB_RECT_PACK_H
+#define STB_INCLUDE_STB_RECT_PACK_H
+
+#define STB_RECT_PACK_VERSION  1
+
+#ifdef STBRP_STATIC
+#define STBRP_DEF static
+#else
+#define STBRP_DEF extern
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct stbrp_context stbrp_context;
+typedef struct stbrp_node    stbrp_node;
+typedef struct stbrp_rect    stbrp_rect;
+
+#ifdef STBRP_LARGE_RECTS
+typedef int            stbrp_coord;
+#else
+typedef unsigned short stbrp_coord;
+#endif
+
+STBRP_DEF int stbrp_pack_rects (stbrp_context *context, stbrp_rect *rects, int num_rects);
+// Assign packed locations to rectangles. The rectangles are of type
+// 'stbrp_rect' defined below, stored in the array 'rects', and there
+// are 'num_rects' many of them.
+//
+// Rectangles which are successfully packed have the 'was_packed' flag
+// set to a non-zero value and 'x' and 'y' store the minimum location
+// on each axis (i.e. bottom-left in cartesian coordinates, top-left
+// if you imagine y increasing downwards). Rectangles which do not fit
+// have the 'was_packed' flag set to 0.
+//
+// You should not try to access the 'rects' array from another thread
+// while this function is running, as the function temporarily reorders
+// the array while it executes.
+//
+// To pack into another rectangle, you need to call stbrp_init_target
+// again. To continue packing into the same rectangle, you can call
+// this function again. Calling this multiple times with multiple rect
+// arrays will probably produce worse packing results than calling it
+// a single time with the full rectangle array, but the option is
+// available.
+//
+// The function returns 1 if all of the rectangles were successfully
+// packed and 0 otherwise.
+
+struct stbrp_rect
+{
+   // reserved for your use:
+   int            id;
+
+   // input:
+   stbrp_coord    w, h;
+
+   // output:
+   stbrp_coord    x, y;
+   int            was_packed;  // non-zero if valid packing
+
+}; // 16 bytes, nominally
+
+
+STBRP_DEF void stbrp_init_target (stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes);
+// Initialize a rectangle packer to:
+//    pack a rectangle that is 'width' by 'height' in dimensions
+//    using temporary storage provided by the array 'nodes', which is 'num_nodes' long
+//
+// You must call this function every time you start packing into a new target.
+//
+// There is no "shutdown" function. The 'nodes' memory must stay valid for
+// the following stbrp_pack_rects() call (or calls), but can be freed after
+// the call (or calls) finish.
+//
+// Note: to guarantee best results, either:
+//       1. make sure 'num_nodes' >= 'width'
+//   or  2. call stbrp_allow_out_of_mem() defined below with 'allow_out_of_mem = 1'
+//
+// If you don't do either of the above things, widths will be quantized to multiples
+// of small integers to guarantee the algorithm doesn't run out of temporary storage.
+//
+// If you do #2, then the non-quantized algorithm will be used, but the algorithm
+// may run out of temporary storage and be unable to pack some rectangles.
+
+STBRP_DEF void stbrp_setup_allow_out_of_mem (stbrp_context *context, int allow_out_of_mem);
+// Optionally call this function after init but before doing any packing to
+// change the handling of the out-of-temp-memory scenario, described above.
+// If you call init again, this will be reset to the default (false).
+
+
+STBRP_DEF void stbrp_setup_heuristic (stbrp_context *context, int heuristic);
+// Optionally select which packing heuristic the library should use. Different
+// heuristics will produce better/worse results for different data sets.
+// If you call init again, this will be reset to the default.
+
+enum
+{
+   STBRP_HEURISTIC_Skyline_default=0,
+   STBRP_HEURISTIC_Skyline_BL_sortHeight = STBRP_HEURISTIC_Skyline_default,
+   STBRP_HEURISTIC_Skyline_BF_sortHeight
+};
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// the details of the following structures don't matter to you, but they must
+// be visible so you can handle the memory allocations for them
+
+struct stbrp_node
+{
+   stbrp_coord  x,y;
+   stbrp_node  *next;
+};
+
+struct stbrp_context
+{
+   int width;
+   int height;
+   int align;
+   int init_mode;
+   int heuristic;
+   int num_nodes;
+   stbrp_node *active_head;
+   stbrp_node *free_head;
+   stbrp_node extra[2]; // we allocate two extra nodes so optimal user-node-count is 'width' not 'width+2'
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+//////////////////////////////////////////////////////////////////////////////
+//
+//     IMPLEMENTATION SECTION
+//
+
+#ifdef STB_RECT_PACK_IMPLEMENTATION
+#ifndef STBRP_SORT
+#include <stdlib.h>
+#define STBRP_SORT qsort
+#endif
+
+#ifndef STBRP_ASSERT
+#include <assert.h>
+#define STBRP_ASSERT assert
+#endif
+
+// [DEAR IMGUI] Added STBRP__CDECL
+#ifdef _MSC_VER
+#define STBRP__NOTUSED(v)  (void)(v)
+#define STBRP__CDECL __cdecl
+#else
+#define STBRP__NOTUSED(v)  (void)sizeof(v)
+#define STBRP__CDECL
+#endif
+
+enum
+{
+   STBRP__INIT_skyline = 1
+};
+
+STBRP_DEF void stbrp_setup_heuristic(stbrp_context *context, int heuristic)
+{
+   switch (context->init_mode) {
+      case STBRP__INIT_skyline:
+         STBRP_ASSERT(heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight || heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight);
+         context->heuristic = heuristic;
+         break;
+      default:
+         STBRP_ASSERT(0);
+   }
+}
+
+STBRP_DEF void stbrp_setup_allow_out_of_mem(stbrp_context *context, int allow_out_of_mem)
+{
+   if (allow_out_of_mem)
+      // if it's ok to run out of memory, then don't bother aligning them;
+      // this gives better packing, but may fail due to OOM (even though
+      // the rectangles easily fit). @TODO a smarter approach would be to only
+      // quantize once we've hit OOM, then we could get rid of this parameter.
+      context->align = 1;
+   else {
+      // if it's not ok to run out of memory, then quantize the widths
+      // so that num_nodes is always enough nodes.
+      //
+      // I.e. num_nodes * align >= width
+      //                  align >= width / num_nodes
+      //                  align = ceil(width/num_nodes)
+
+      context->align = (context->width + context->num_nodes-1) / context->num_nodes;
+   }
+}
+
+STBRP_DEF void stbrp_init_target(stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes)
+{
+   int i;
+#ifndef STBRP_LARGE_RECTS
+   STBRP_ASSERT(width <= 0xffff && height <= 0xffff);
+#endif
+
+   for (i=0; i < num_nodes-1; ++i)
+      nodes[i].next = &nodes[i+1];
+   nodes[i].next = NULL;
+   context->init_mode = STBRP__INIT_skyline;
+   context->heuristic = STBRP_HEURISTIC_Skyline_default;
+   context->free_head = &nodes[0];
+   context->active_head = &context->extra[0];
+   context->width = width;
+   context->height = height;
+   context->num_nodes = num_nodes;
+   stbrp_setup_allow_out_of_mem(context, 0);
+
+   // node 0 is the full width, node 1 is the sentinel (lets us not store width explicitly)
+   context->extra[0].x = 0;
+   context->extra[0].y = 0;
+   context->extra[0].next = &context->extra[1];
+   context->extra[1].x = (stbrp_coord) width;
+#ifdef STBRP_LARGE_RECTS
+   context->extra[1].y = (1<<30);
+#else
+   context->extra[1].y = 65535;
+#endif
+   context->extra[1].next = NULL;
+}
+
+// find minimum y position if it starts at x1
+static int stbrp__skyline_find_min_y(stbrp_context *c, stbrp_node *first, int x0, int width, int *pwaste)
+{
+   stbrp_node *node = first;
+   int x1 = x0 + width;
+   int min_y, visited_width, waste_area;
+
+   STBRP__NOTUSED(c);
+
+   STBRP_ASSERT(first->x <= x0);
+
+   #if 0
+   // skip in case we're past the node
+   while (node->next->x <= x0)
+      ++node;
+   #else
+   STBRP_ASSERT(node->next->x > x0); // we ended up handling this in the caller for efficiency
+   #endif
+
+   STBRP_ASSERT(node->x <= x0);
+
+   min_y = 0;
+   waste_area = 0;
+   visited_width = 0;
+   while (node->x < x1) {
+      if (node->y > min_y) {
+         // raise min_y higher.
+         // we've accounted for all waste up to min_y,
+         // but we'll now add more waste for everything we've visted
+         waste_area += visited_width * (node->y - min_y);
+         min_y = node->y;
+         // the first time through, visited_width might be reduced
+         if (node->x < x0)
+            visited_width += node->next->x - x0;
+         else
+            visited_width += node->next->x - node->x;
+      } else {
+         // add waste area
+         int under_width = node->next->x - node->x;
+         if (under_width + visited_width > width)
+            under_width = width - visited_width;
+         waste_area += under_width * (min_y - node->y);
+         visited_width += under_width;
+      }
+      node = node->next;
+   }
+
+   *pwaste = waste_area;
+   return min_y;
+}
+
+typedef struct
+{
+   int x,y;
+   stbrp_node **prev_link;
+} stbrp__findresult;
+
+static stbrp__findresult stbrp__skyline_find_best_pos(stbrp_context *c, int width, int height)
+{
+   int best_waste = (1<<30), best_x, best_y = (1 << 30);
+   stbrp__findresult fr;
+   stbrp_node **prev, *node, *tail, **best = NULL;
+
+   // align to multiple of c->align
+   width = (width + c->align - 1);
+   width -= width % c->align;
+   STBRP_ASSERT(width % c->align == 0);
+
+   // if it can't possibly fit, bail immediately
+   if (width > c->width || height > c->height) {
+      fr.prev_link = NULL;
+      fr.x = fr.y = 0;
+      return fr;
+   }
+
+   node = c->active_head;
+   prev = &c->active_head;
+   while (node->x + width <= c->width) {
+      int y,waste;
+      y = stbrp__skyline_find_min_y(c, node, node->x, width, &waste);
+      if (c->heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight) { // actually just want to test BL
+         // bottom left
+         if (y < best_y) {
+            best_y = y;
+            best = prev;
+         }
+      } else {
+         // best-fit
+         if (y + height <= c->height) {
+            // can only use it if it first vertically
+            if (y < best_y || (y == best_y && waste < best_waste)) {
+               best_y = y;
+               best_waste = waste;
+               best = prev;
+            }
+         }
+      }
+      prev = &node->next;
+      node = node->next;
+   }
+
+   best_x = (best == NULL) ? 0 : (*best)->x;
+
+   // if doing best-fit (BF), we also have to try aligning right edge to each node position
+   //
+   // e.g, if fitting
+   //
+   //     ____________________
+   //    |____________________|
+   //
+   //            into
+   //
+   //   |                         |
+   //   |             ____________|
+   //   |____________|
+   //
+   // then right-aligned reduces waste, but bottom-left BL is always chooses left-aligned
+   //
+   // This makes BF take about 2x the time
+
+   if (c->heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight) {
+      tail = c->active_head;
+      node = c->active_head;
+      prev = &c->active_head;
+      // find first node that's admissible
+      while (tail->x < width)
+         tail = tail->next;
+      while (tail) {
+         int xpos = tail->x - width;
+         int y,waste;
+         STBRP_ASSERT(xpos >= 0);
+         // find the left position that matches this
+         while (node->next->x <= xpos) {
+            prev = &node->next;
+            node = node->next;
+         }
+         STBRP_ASSERT(node->next->x > xpos && node->x <= xpos);
+         y = stbrp__skyline_find_min_y(c, node, xpos, width, &waste);
+         if (y + height <= c->height) {
+            if (y <= best_y) {
+               if (y < best_y || waste < best_waste || (waste==best_waste && xpos < best_x)) {
+                  best_x = xpos;
+                  STBRP_ASSERT(y <= best_y);
+                  best_y = y;
+                  best_waste = waste;
+                  best = prev;
+               }
+            }
+         }
+         tail = tail->next;
+      }         
+   }
+
+   fr.prev_link = best;
+   fr.x = best_x;
+   fr.y = best_y;
+   return fr;
+}
+
+static stbrp__findresult stbrp__skyline_pack_rectangle(stbrp_context *context, int width, int height)
+{
+   // find best position according to heuristic
+   stbrp__findresult res = stbrp__skyline_find_best_pos(context, width, height);
+   stbrp_node *node, *cur;
+
+   // bail if:
+   //    1. it failed
+   //    2. the best node doesn't fit (we don't always check this)
+   //    3. we're out of memory
+   if (res.prev_link == NULL || res.y + height > context->height || context->free_head == NULL) {
+      res.prev_link = NULL;
+      return res;
+   }
+
+   // on success, create new node
+   node = context->free_head;
+   node->x = (stbrp_coord) res.x;
+   node->y = (stbrp_coord) (res.y + height);
+
+   context->free_head = node->next;
+
+   // insert the new node into the right starting point, and
+   // let 'cur' point to the remaining nodes needing to be
+   // stiched back in
+
+   cur = *res.prev_link;
+   if (cur->x < res.x) {
+      // preserve the existing one, so start testing with the next one
+      stbrp_node *next = cur->next;
+      cur->next = node;
+      cur = next;
+   } else {
+      *res.prev_link = node;
+   }
+
+   // from here, traverse cur and free the nodes, until we get to one
+   // that shouldn't be freed
+   while (cur->next && cur->next->x <= res.x + width) {
+      stbrp_node *next = cur->next;
+      // move the current node to the free list
+      cur->next = context->free_head;
+      context->free_head = cur;
+      cur = next;
+   }
+
+   // stitch the list back in
+   node->next = cur;
+
+   if (cur->x < res.x + width)
+      cur->x = (stbrp_coord) (res.x + width);
+
+#ifdef _DEBUG
+   cur = context->active_head;
+   while (cur->x < context->width) {
+      STBRP_ASSERT(cur->x < cur->next->x);
+      cur = cur->next;
+   }
+   STBRP_ASSERT(cur->next == NULL);
+
+   {
+      int count=0;
+      cur = context->active_head;
+      while (cur) {
+         cur = cur->next;
+         ++count;
+      }
+      cur = context->free_head;
+      while (cur) {
+         cur = cur->next;
+         ++count;
+      }
+      STBRP_ASSERT(count == context->num_nodes+2);
+   }
+#endif
+
+   return res;
+}
+
+// [DEAR IMGUI] Added STBRP__CDECL
+static int STBRP__CDECL rect_height_compare(const void *a, const void *b)
+{
+   const stbrp_rect *p = (const stbrp_rect *) a;
+   const stbrp_rect *q = (const stbrp_rect *) b;
+   if (p->h > q->h)
+      return -1;
+   if (p->h < q->h)
+      return  1;
+   return (p->w > q->w) ? -1 : (p->w < q->w);
+}
+
+// [DEAR IMGUI] Added STBRP__CDECL
+static int STBRP__CDECL rect_original_order(const void *a, const void *b)
+{
+   const stbrp_rect *p = (const stbrp_rect *) a;
+   const stbrp_rect *q = (const stbrp_rect *) b;
+   return (p->was_packed < q->was_packed) ? -1 : (p->was_packed > q->was_packed);
+}
+
+#ifdef STBRP_LARGE_RECTS
+#define STBRP__MAXVAL  0xffffffff
+#else
+#define STBRP__MAXVAL  0xffff
+#endif
+
+STBRP_DEF int stbrp_pack_rects(stbrp_context *context, stbrp_rect *rects, int num_rects)
+{
+   int i, all_rects_packed = 1;
+
+   // we use the 'was_packed' field internally to allow sorting/unsorting
+   for (i=0; i < num_rects; ++i) {
+      rects[i].was_packed = i;
+   }
+
+   // sort according to heuristic
+   STBRP_SORT(rects, num_rects, sizeof(rects[0]), rect_height_compare);
+
+   for (i=0; i < num_rects; ++i) {
+      if (rects[i].w == 0 || rects[i].h == 0) {
+         rects[i].x = rects[i].y = 0;  // empty rect needs no space
+      } else {
+         stbrp__findresult fr = stbrp__skyline_pack_rectangle(context, rects[i].w, rects[i].h);
+         if (fr.prev_link) {
+            rects[i].x = (stbrp_coord) fr.x;
+            rects[i].y = (stbrp_coord) fr.y;
+         } else {
+            rects[i].x = rects[i].y = STBRP__MAXVAL;
+         }
+      }
+   }
+
+   // unsort
+   STBRP_SORT(rects, num_rects, sizeof(rects[0]), rect_original_order);
+
+   // set was_packed flags and all_rects_packed status
+   for (i=0; i < num_rects; ++i) {
+      rects[i].was_packed = !(rects[i].x == STBRP__MAXVAL && rects[i].y == STBRP__MAXVAL);
+      if (!rects[i].was_packed)
+         all_rects_packed = 0;
+   }
+
+   // return the all_rects_packed status
+   return all_rects_packed;
+}
+#endif
+
+/*
+------------------------------------------------------------------------------
+This software is available under 2 licenses -- choose whichever you prefer.
+------------------------------------------------------------------------------
+ALTERNATIVE A - MIT License
+Copyright (c) 2017 Sean Barrett
+Permission is hereby granted, free of charge, to any person obtaining a copy of 
+this software and associated documentation files (the "Software"), to deal in 
+the Software without restriction, including without limitation the rights to 
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies 
+of the Software, and to permit persons to whom the Software is furnished to do 
+so, subject to the following conditions:
+The above copyright notice and this permission notice shall be included in all 
+copies or substantial portions of the Software.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
+SOFTWARE.
+------------------------------------------------------------------------------
+ALTERNATIVE B - Public Domain (www.unlicense.org)
+This is free and unencumbered software released into the public domain.
+Anyone is free to copy, modify, publish, use, compile, sell, or distribute this 
+software, either in source code form or as a compiled binary, for any purpose, 
+commercial or non-commercial, and by any means.
+In jurisdictions that recognize copyright laws, the author or authors of this 
+software dedicate any and all copyright interest in the software to the public 
+domain. We make this dedication for the benefit of the public at large and to 
+the detriment of our heirs and successors. We intend this dedication to be an 
+overt act of relinquishment in perpetuity of all present and future rights to 
+this software under copyright law.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
+AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 
+ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+------------------------------------------------------------------------------
+*/
--- a/include/imgui-1.76/imstb_textedit.h
+++ b/include/imgui-1.76/imstb_textedit.h
--- a/include/imgui-1.76/imstb_truetype.h
+++ b/include/imgui-1.76/imstb_truetype.h
--- a/include/imgui-1.76/misc/fonts/Cousine-Regular.ttf
+++ b/include/imgui-1.76/misc/fonts/Cousine-Regular.ttf
--- a/include/imgui-1.76/misc/fonts/DroidSans.ttf
+++ b/include/imgui-1.76/misc/fonts/DroidSans.ttf
--- a/include/imgui-1.76/misc/fonts/Karla-Regular.ttf
+++ b/include/imgui-1.76/misc/fonts/Karla-Regular.ttf
--- a/include/imgui-1.76/misc/fonts/ProggyClean.ttf
+++ b/include/imgui-1.76/misc/fonts/ProggyClean.ttf
--- a/include/imgui-1.76/misc/fonts/ProggyTiny.ttf
+++ b/include/imgui-1.76/misc/fonts/ProggyTiny.ttf
--- a/include/imgui-1.76/misc/fonts/Roboto-Medium.ttf
+++ b/include/imgui-1.76/misc/fonts/Roboto-Medium.ttf
--- a/include/imgui-1.76/misc/fonts/binary_to_compressed_c.cpp
+++ b/include/imgui-1.76/misc/fonts/binary_to_compressed_c.cpp
@ -0,0 +1,384 @@
+// dear imgui
+// (binary_to_compressed_c.cpp)
+// Helper tool to turn a file into a C array, if you want to embed font data in your source code.
+
+// The data is first compressed with stb_compress() to reduce source code size,
+// then encoded in Base85 to fit in a string so we can fit roughly 4 bytes of compressed data into 5 bytes of source code (suggested by @mmalex)
+// (If we used 32-bit constants it would require take 11 bytes of source code to encode 4 bytes, and be endianness dependent)
+// Note that even with compression, the output array is likely to be bigger than the binary file..
+// Load compressed TTF fonts with ImGui::GetIO().Fonts->AddFontFromMemoryCompressedTTF()
+
+// Build with, e.g:
+//   # cl.exe binary_to_compressed_c.cpp
+//   # gcc binary_to_compressed_c.cpp
+// You can also find a precompiled Windows binary in the binary/demo package available from https://github.com/ocornut/imgui
+
+// Usage:
+//   binary_to_compressed_c.exe [-base85] [-nocompress] <inputfile> <symbolname>
+// Usage example:
+//   # binary_to_compressed_c.exe myfont.ttf MyFont > myfont.cpp
+//   # binary_to_compressed_c.exe -base85 myfont.ttf MyFont > myfont.cpp
+
+#define _CRT_SECURE_NO_WARNINGS
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+
+// stb_compress* from stb.h - declaration
+typedef unsigned int stb_uint;
+typedef unsigned char stb_uchar;
+stb_uint stb_compress(stb_uchar *out,stb_uchar *in,stb_uint len);
+
+static bool binary_to_compressed_c(const char* filename, const char* symbol, bool use_base85_encoding, bool use_compression);
+
+int main(int argc, char** argv)
+{
+    if (argc < 3)
+    {
+        printf("Syntax: %s [-base85] [-nocompress] <inputfile> <symbolname>\n", argv[0]);
+        return 0;
+    }
+
+    int argn = 1;
+    bool use_base85_encoding = false;
+    bool use_compression = true;
+    if (argv[argn][0] == '-')
+    {
+        if (strcmp(argv[argn], "-base85") == 0) { use_base85_encoding = true; argn++; }
+        else if (strcmp(argv[argn], "-nocompress") == 0) { use_compression = false; argn++; }
+        else
+        {
+            fprintf(stderr, "Unknown argument: '%s'\n", argv[argn]);
+            return 1;
+        }
+    }
+
+    bool ret = binary_to_compressed_c(argv[argn], argv[argn+1], use_base85_encoding, use_compression);
+    if (!ret)
+        fprintf(stderr, "Error opening or reading file: '%s'\n", argv[argn]);
+    return ret ? 0 : 1;
+}
+
+char Encode85Byte(unsigned int x)
+{
+    x = (x % 85) + 35;
+    return (x>='\\') ? x+1 : x;
+}
+
+bool binary_to_compressed_c(const char* filename, const char* symbol, bool use_base85_encoding, bool use_compression)
+{
+    // Read file
+    FILE* f = fopen(filename, "rb");
+    if (!f) return false;
+    int data_sz;
+    if (fseek(f, 0, SEEK_END) || (data_sz = (int)ftell(f)) == -1 || fseek(f, 0, SEEK_SET)) { fclose(f); return false; }
+    char* data = new char[data_sz+4];
+    if (fread(data, 1, data_sz, f) != (size_t)data_sz) { fclose(f); delete[] data; return false; }
+    memset((void*)(((char*)data) + data_sz), 0, 4);
+    fclose(f);
+
+    // Compress
+    int maxlen = data_sz + 512 + (data_sz >> 2) + sizeof(int); // total guess
+    char* compressed = use_compression ? new char[maxlen] : data;
+    int compressed_sz = use_compression ? stb_compress((stb_uchar*)compressed, (stb_uchar*)data, data_sz) : data_sz;
+    if (use_compression)
+		memset(compressed + compressed_sz, 0, maxlen - compressed_sz);
+
+    // Output as Base85 encoded
+    FILE* out = stdout;
+    fprintf(out, "// File: '%s' (%d bytes)\n", filename, (int)data_sz);
+    fprintf(out, "// Exported using binary_to_compressed_c.cpp\n");
+	const char* compressed_str = use_compression ? "compressed_" : "";
+    if (use_base85_encoding)
+    {
+        fprintf(out, "static const char %s_%sdata_base85[%d+1] =\n    \"", symbol, compressed_str, (int)((compressed_sz+3)/4)*5);
+        char prev_c = 0;
+        for (int src_i = 0; src_i < compressed_sz; src_i += 4)
+        {
+            // This is made a little more complicated by the fact that ??X sequences are interpreted as trigraphs by old C/C++ compilers. So we need to escape pairs of ??.
+            unsigned int d = *(unsigned int*)(compressed + src_i);
+            for (unsigned int n5 = 0; n5 < 5; n5++, d /= 85)
+            {
+                char c = Encode85Byte(d);
+                fprintf(out, (c == '?' && prev_c == '?') ? "\\%c" : "%c", c);
+                prev_c = c;
+            }
+            if ((src_i % 112) == 112-4)
+                fprintf(out, "\"\n    \"");
+        }
+        fprintf(out, "\";\n\n");
+    }
+    else
+    {
+        fprintf(out, "static const unsigned int %s_%ssize = %d;\n", symbol, compressed_str, (int)compressed_sz);
+        fprintf(out, "static const unsigned int %s_%sdata[%d/4] =\n{", symbol, compressed_str, (int)((compressed_sz+3)/4)*4);
+        int column = 0;
+        for (int i = 0; i < compressed_sz; i += 4)
+        {
+            unsigned int d = *(unsigned int*)(compressed + i);
+            if ((column++ % 12) == 0)
+                fprintf(out, "\n    0x%08x, ", d);
+            else
+                fprintf(out, "0x%08x, ", d);
+        }
+        fprintf(out, "\n};\n\n");
+    }
+
+    // Cleanup
+    delete[] data;
+    if (use_compression)
+	    delete[] compressed;
+    return true;
+}
+
+// stb_compress* from stb.h - definition
+
+////////////////////           compressor         ///////////////////////
+
+static stb_uint stb_adler32(stb_uint adler32, stb_uchar *buffer, stb_uint buflen)
+{
+    const unsigned long ADLER_MOD = 65521;
+    unsigned long s1 = adler32 & 0xffff, s2 = adler32 >> 16;
+    unsigned long blocklen, i;
+
+    blocklen = buflen % 5552;
+    while (buflen) {
+        for (i=0; i + 7 < blocklen; i += 8) {
+            s1 += buffer[0], s2 += s1;
+            s1 += buffer[1], s2 += s1;
+            s1 += buffer[2], s2 += s1;
+            s1 += buffer[3], s2 += s1;
+            s1 += buffer[4], s2 += s1;
+            s1 += buffer[5], s2 += s1;
+            s1 += buffer[6], s2 += s1;
+            s1 += buffer[7], s2 += s1;
+
+            buffer += 8;
+        }
+
+        for (; i < blocklen; ++i)
+            s1 += *buffer++, s2 += s1;
+
+        s1 %= ADLER_MOD, s2 %= ADLER_MOD;
+        buflen -= blocklen;
+        blocklen = 5552;
+    }
+    return (s2 << 16) + s1;
+}
+
+static unsigned int stb_matchlen(stb_uchar *m1, stb_uchar *m2, stb_uint maxlen)
+{
+    stb_uint i;
+    for (i=0; i < maxlen; ++i)
+        if (m1[i] != m2[i]) return i;
+    return i;
+}
+
+// simple implementation that just takes the source data in a big block
+
+static stb_uchar *stb__out;
+static FILE      *stb__outfile;
+static stb_uint   stb__outbytes;
+
+static void stb__write(unsigned char v)
+{
+    fputc(v, stb__outfile);
+    ++stb__outbytes;
+}
+
+//#define stb_out(v)    (stb__out ? *stb__out++ = (stb_uchar) (v) : stb__write((stb_uchar) (v)))
+#define stb_out(v)    do { if (stb__out) *stb__out++ = (stb_uchar) (v); else stb__write((stb_uchar) (v)); } while (0)
+
+static void stb_out2(stb_uint v) { stb_out(v >> 8); stb_out(v); }
+static void stb_out3(stb_uint v) { stb_out(v >> 16); stb_out(v >> 8); stb_out(v); }
+static void stb_out4(stb_uint v) { stb_out(v >> 24); stb_out(v >> 16); stb_out(v >> 8 ); stb_out(v); }
+
+static void outliterals(stb_uchar *in, int numlit)
+{
+    while (numlit > 65536) {
+        outliterals(in,65536);
+        in     += 65536;
+        numlit -= 65536;
+    }
+
+    if      (numlit ==     0)    ;
+    else if (numlit <=    32)    stb_out (0x000020 + numlit-1);
+    else if (numlit <=  2048)    stb_out2(0x000800 + numlit-1);
+    else /*  numlit <= 65536) */ stb_out3(0x070000 + numlit-1);
+
+    if (stb__out) {
+        memcpy(stb__out,in,numlit);
+        stb__out += numlit;
+    } else
+        fwrite(in, 1, numlit, stb__outfile);
+}
+
+static int stb__window = 0x40000; // 256K
+
+static int stb_not_crap(int best, int dist)
+{
+    return   ((best > 2  &&  dist <= 0x00100)
+        || (best > 5  &&  dist <= 0x04000)
+        || (best > 7  &&  dist <= 0x80000));
+}
+
+static  stb_uint stb__hashsize = 32768;
+
+// note that you can play with the hashing functions all you
+// want without needing to change the decompressor
+#define stb__hc(q,h,c)      (((h) << 7) + ((h) >> 25) + q[c])
+#define stb__hc2(q,h,c,d)   (((h) << 14) + ((h) >> 18) + (q[c] << 7) + q[d])
+#define stb__hc3(q,c,d,e)   ((q[c] << 14) + (q[d] << 7) + q[e])
+
+static unsigned int stb__running_adler;
+
+static int stb_compress_chunk(stb_uchar *history,
+    stb_uchar *start,
+    stb_uchar *end,
+    int length,
+    int *pending_literals,
+    stb_uchar **chash,
+    stb_uint mask)
+{
+    (void)history;
+    int window = stb__window;
+    stb_uint match_max;
+    stb_uchar *lit_start = start - *pending_literals;
+    stb_uchar *q = start;
+
+#define STB__SCRAMBLE(h)   (((h) + ((h) >> 16)) & mask)
+
+    // stop short of the end so we don't scan off the end doing
+    // the hashing; this means we won't compress the last few bytes
+    // unless they were part of something longer
+    while (q < start+length && q+12 < end) {
+        int m;
+        stb_uint h1,h2,h3,h4, h;
+        stb_uchar *t;
+        int best = 2, dist=0;
+
+        if (q+65536 > end)
+            match_max = end-q;
+        else
+            match_max = 65536;
+
+#define stb__nc(b,d)  ((d) <= window && ((b) > 9 || stb_not_crap(b,d)))
+
+#define STB__TRY(t,p)  /* avoid retrying a match we already tried */ \
+    if (p ? dist != q-t : 1)                             \
+    if ((m = stb_matchlen(t, q, match_max)) > best)     \
+    if (stb__nc(m,q-(t)))                                \
+    best = m, dist = q - (t)
+
+        // rather than search for all matches, only try 4 candidate locations,
+        // chosen based on 4 different hash functions of different lengths.
+        // this strategy is inspired by LZO; hashing is unrolled here using the
+        // 'hc' macro
+        h = stb__hc3(q,0, 1, 2); h1 = STB__SCRAMBLE(h);
+        t = chash[h1]; if (t) STB__TRY(t,0);
+        h = stb__hc2(q,h, 3, 4); h2 = STB__SCRAMBLE(h);
+        h = stb__hc2(q,h, 5, 6);        t = chash[h2]; if (t) STB__TRY(t,1);
+        h = stb__hc2(q,h, 7, 8); h3 = STB__SCRAMBLE(h);
+        h = stb__hc2(q,h, 9,10);        t = chash[h3]; if (t) STB__TRY(t,1);
+        h = stb__hc2(q,h,11,12); h4 = STB__SCRAMBLE(h);
+        t = chash[h4]; if (t) STB__TRY(t,1);
+
+        // because we use a shared hash table, can only update it
+        // _after_ we've probed all of them
+        chash[h1] = chash[h2] = chash[h3] = chash[h4] = q;
+
+        if (best > 2)
+            assert(dist > 0);
+
+        // see if our best match qualifies
+        if (best < 3) { // fast path literals
+            ++q;
+        } else if (best > 2  &&  best <= 0x80    &&  dist <= 0x100) {
+            outliterals(lit_start, q-lit_start); lit_start = (q += best);
+            stb_out(0x80 + best-1);
+            stb_out(dist-1);
+        } else if (best > 5  &&  best <= 0x100   &&  dist <= 0x4000) {
+            outliterals(lit_start, q-lit_start); lit_start = (q += best);
+            stb_out2(0x4000 + dist-1);
+            stb_out(best-1);
+        } else if (best > 7  &&  best <= 0x100   &&  dist <= 0x80000) {
+            outliterals(lit_start, q-lit_start); lit_start = (q += best);
+            stb_out3(0x180000 + dist-1);
+            stb_out(best-1);
+        } else if (best > 8  &&  best <= 0x10000 &&  dist <= 0x80000) {
+            outliterals(lit_start, q-lit_start); lit_start = (q += best);
+            stb_out3(0x100000 + dist-1);
+            stb_out2(best-1);
+        } else if (best > 9                      &&  dist <= 0x1000000) {
+            if (best > 65536) best = 65536;
+            outliterals(lit_start, q-lit_start); lit_start = (q += best);
+            if (best <= 0x100) {
+                stb_out(0x06);
+                stb_out3(dist-1);
+                stb_out(best-1);
+            } else {
+                stb_out(0x04);
+                stb_out3(dist-1);
+                stb_out2(best-1);
+            }
+        } else {  // fallback literals if no match was a balanced tradeoff
+            ++q;
+        }
+    }
+
+    // if we didn't get all the way, add the rest to literals
+    if (q-start < length)
+        q = start+length;
+
+    // the literals are everything from lit_start to q
+    *pending_literals = (q - lit_start);
+
+    stb__running_adler = stb_adler32(stb__running_adler, start, q - start);
+    return q - start;
+}
+
+static int stb_compress_inner(stb_uchar *input, stb_uint length)
+{
+    int literals = 0;
+    stb_uint len,i;
+
+    stb_uchar **chash;
+    chash = (stb_uchar**) malloc(stb__hashsize * sizeof(stb_uchar*));
+    if (chash == NULL) return 0; // failure
+    for (i=0; i < stb__hashsize; ++i)
+        chash[i] = NULL;
+
+    // stream signature
+    stb_out(0x57); stb_out(0xbc);
+    stb_out2(0);
+
+    stb_out4(0);       // 64-bit length requires 32-bit leading 0
+    stb_out4(length);
+    stb_out4(stb__window);
+
+    stb__running_adler = 1;
+
+    len = stb_compress_chunk(input, input, input+length, length, &literals, chash, stb__hashsize-1);
+    assert(len == length);
+
+    outliterals(input+length - literals, literals);
+
+    free(chash);
+
+    stb_out2(0x05fa); // end opcode
+
+    stb_out4(stb__running_adler);
+
+    return 1; // success
+}
+
+stb_uint stb_compress(stb_uchar *out, stb_uchar *input, stb_uint length)
+{
+    stb__out = out;
+    stb__outfile = NULL;
+
+    stb_compress_inner(input, length);
+
+    return stb__out - out;
+}
--- a/include/imgui-1.76/misc/freetype/README.md
+++ b/include/imgui-1.76/misc/freetype/README.md
@ -0,0 +1,132 @@
+# imgui_freetype
+
+Build font atlases using FreeType instead of stb_truetype (which is the default font rasterizer in Dear ImGui).
+<br>by @vuhdo, @mikesart, @ocornut.
+
+### Usage
+
+1. Get latest FreeType binaries or build yourself (under Windows you may use vcpkg with `vcpkg install freetype`, `vcpkg integrate install`).
+2. Add imgui_freetype.h/cpp alongside your imgui sources.
+3. Include imgui_freetype.h after imgui.h.
+4. Call `ImGuiFreeType::BuildFontAtlas()` *BEFORE* calling `ImFontAtlas::GetTexDataAsRGBA32()` or `ImFontAtlas::Build()` (so normal Build() won't be called):
+
+```cpp
+// See ImGuiFreeType::RasterizationFlags
+unsigned int flags = ImGuiFreeType::NoHinting;
+ImGuiFreeType::BuildFontAtlas(io.Fonts, flags);
+io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
+```
+
+### Gamma Correct Blending
+
+FreeType assumes blending in linear space rather than gamma space.
+See FreeType note for [FT_Render_Glyph](https://www.freetype.org/freetype2/docs/reference/ft2-base_interface.html#FT_Render_Glyph).
+For correct results you need to be using sRGB and convert to linear space in the pixel shader output.
+The default Dear ImGui styles will be impacted by this change (alpha values will need tweaking).
+
+### Test code Usage
+```cpp
+#include "misc/freetype/imgui_freetype.h"
+#include "misc/freetype/imgui_freetype.cpp"
+
+// Load various small fonts
+ImGuiIO& io = ImGui::GetIO();
+io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 13.0f);
+io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 13.0f);
+io.Fonts->AddFontDefault();
+
+FreeTypeTest freetype_test;
+
+// Main Loop
+while (true)
+{
+   if (freetype_test.UpdateRebuild())
+   {
+      // REUPLOAD FONT TEXTURE TO GPU
+      ImGui_ImplXXX_DestroyDeviceObjects();
+      ImGui_ImplXXX_CreateDeviceObjects();
+   }
+   ImGui::NewFrame();
+   freetype_test.ShowFreetypeOptionsWindow();
+   ...
+}
+```
+
+### Test code
+```cpp
+#include "misc/freetype/imgui_freetype.h"
+#include "misc/freetype/imgui_freetype.cpp"
+
+struct FreeTypeTest
+{
+    enum FontBuildMode
+    {
+        FontBuildMode_FreeType,
+        FontBuildMode_Stb
+    };
+
+    FontBuildMode BuildMode;
+    bool          WantRebuild;
+    float         FontsMultiply;
+    int           FontsPadding;
+    unsigned int  FontsFlags;
+
+    FreeTypeTest()
+    {
+        BuildMode = FontBuildMode_FreeType;
+        WantRebuild = true;
+        FontsMultiply = 1.0f;
+        FontsPadding = 1;
+        FontsFlags = 0;
+    }
+
+    // Call _BEFORE_ NewFrame()
+    bool UpdateRebuild()
+    {
+        if (!WantRebuild)
+            return false;
+        ImGuiIO& io = ImGui::GetIO();
+        io.Fonts->TexGlyphPadding = FontsPadding;
+        for (int n = 0; n < io.Fonts->ConfigData.Size; n++)
+        {
+            ImFontConfig* font_config = (ImFontConfig*)&io.Fonts->ConfigData[n];
+            font_config->RasterizerMultiply = FontsMultiply;
+            font_config->RasterizerFlags = (BuildMode == FontBuildMode_FreeType) ? FontsFlags : 0x00;
+        }
+        if (BuildMode == FontBuildMode_FreeType)
+            ImGuiFreeType::BuildFontAtlas(io.Fonts, FontsFlags);
+        else if (BuildMode == FontBuildMode_Stb)
+            io.Fonts->Build();
+        WantRebuild = false;
+        return true;
+    }
+
+    // Call to draw interface
+    void ShowFreetypeOptionsWindow()
+    {
+        ImGui::Begin("FreeType Options");
+        ImGui::ShowFontSelector("Fonts");
+        WantRebuild |= ImGui::RadioButton("FreeType", (int*)&BuildMode, FontBuildMode_FreeType);
+        ImGui::SameLine();
+        WantRebuild |= ImGui::RadioButton("Stb (Default)", (int*)&BuildMode, FontBuildMode_Stb);
+        WantRebuild |= ImGui::DragFloat("Multiply", &FontsMultiply, 0.001f, 0.0f, 2.0f);
+        WantRebuild |= ImGui::DragInt("Padding", &FontsPadding, 0.1f, 0, 16);
+        if (BuildMode == FontBuildMode_FreeType)
+        {
+            WantRebuild |= ImGui::CheckboxFlags("NoHinting",     &FontsFlags, ImGuiFreeType::NoHinting);
+            WantRebuild |= ImGui::CheckboxFlags("NoAutoHint",    &FontsFlags, ImGuiFreeType::NoAutoHint);
+            WantRebuild |= ImGui::CheckboxFlags("ForceAutoHint", &FontsFlags, ImGuiFreeType::ForceAutoHint);
+            WantRebuild |= ImGui::CheckboxFlags("LightHinting",  &FontsFlags, ImGuiFreeType::LightHinting);
+            WantRebuild |= ImGui::CheckboxFlags("MonoHinting",   &FontsFlags, ImGuiFreeType::MonoHinting);
+            WantRebuild |= ImGui::CheckboxFlags("Bold",          &FontsFlags, ImGuiFreeType::Bold);
+            WantRebuild |= ImGui::CheckboxFlags("Oblique",       &FontsFlags, ImGuiFreeType::Oblique);
+            WantRebuild |= ImGui::CheckboxFlags("Monochrome",    &FontsFlags, ImGuiFreeType::Monochrome);
+        }
+        ImGui::End();
+    }
+};
+```
+
+### Known issues
+- `cfg.OversampleH`, `OversampleV` are ignored (but perhaps not so necessary with this rasterizer).
+
--- a/include/imgui-1.76/misc/freetype/imgui_freetype.cpp
+++ b/include/imgui-1.76/misc/freetype/imgui_freetype.cpp
@ -0,0 +1,681 @@
+// dear imgui: wrapper to use FreeType (instead of stb_truetype)
+// Get latest version at https://github.com/ocornut/imgui/tree/master/misc/freetype
+// Original code by @vuhdo (Aleksei Skriabin). Improvements by @mikesart. Maintained and v0.60+ by @ocornut.
+
+// Changelog:
+// - v0.50: (2017/08/16) imported from https://github.com/Vuhdo/imgui_freetype into http://www.github.com/ocornut/imgui_club, updated for latest changes in ImFontAtlas, minor tweaks.
+// - v0.51: (2017/08/26) cleanup, optimizations, support for ImFontConfig::RasterizerFlags, ImFontConfig::RasterizerMultiply.
+// - v0.52: (2017/09/26) fixes for imgui internal changes.
+// - v0.53: (2017/10/22) minor inconsequential change to match change in master (removed an unnecessary statement).
+// - v0.54: (2018/01/22) fix for addition of ImFontAtlas::TexUvscale member.
+// - v0.55: (2018/02/04) moved to main imgui repository (away from http://www.github.com/ocornut/imgui_club)
+// - v0.56: (2018/06/08) added support for ImFontConfig::GlyphMinAdvanceX, GlyphMaxAdvanceX.
+// - v0.60: (2019/01/10) re-factored to match big update in STB builder. fixed texture height waste. fixed redundant glyphs when merging. support for glyph padding.
+// - v0.61: (2019/01/15) added support for imgui allocators + added FreeType only override function SetAllocatorFunctions().
+// - v0.62: (2019/02/09) added RasterizerFlags::Monochrome flag to disable font anti-aliasing (combine with ::MonoHinting for best results!)
+
+// Gamma Correct Blending:
+//  FreeType assumes blending in linear space rather than gamma space.
+//  See https://www.freetype.org/freetype2/docs/reference/ft2-base_interface.html#FT_Render_Glyph
+//  For correct results you need to be using sRGB and convert to linear space in the pixel shader output.
+//  The default imgui styles will be impacted by this change (alpha values will need tweaking).
+
+// FIXME: cfg.OversampleH, OversampleV are not supported (but perhaps not so necessary with this rasterizer).
+
+#include "imgui_freetype.h"
+#include "imgui_internal.h"     // ImMin,ImMax,ImFontAtlasBuild*,
+#include <stdint.h>
+#include <ft2build.h>
+#include FT_FREETYPE_H          // <freetype/freetype.h>
+#include FT_MODULE_H            // <freetype/ftmodapi.h>
+#include FT_GLYPH_H             // <freetype/ftglyph.h>
+#include FT_SYNTHESIS_H         // <freetype/ftsynth.h>
+
+#ifdef _MSC_VER
+#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
+#endif
+
+#if defined(__GNUC__)
+#pragma GCC diagnostic ignored "-Wpragmas"                  // warning: unknown option after '#pragma GCC diagnostic' kind
+#pragma GCC diagnostic ignored "-Wunused-function"          // warning: 'xxxx' defined but not used
+#endif
+
+namespace
+{
+    // Glyph metrics:
+    // --------------
+    //
+    //                       xmin                     xmax
+    //                        |                         |
+    //                        |<-------- width -------->|
+    //                        |                         |
+    //              |         +-------------------------+----------------- ymax
+    //              |         |    ggggggggg   ggggg    |     ^        ^
+    //              |         |   g:::::::::ggg::::g    |     |        |
+    //              |         |  g:::::::::::::::::g    |     |        |
+    //              |         | g::::::ggggg::::::gg    |     |        |
+    //              |         | g:::::g     g:::::g     |     |        |
+    //    offsetX  -|-------->| g:::::g     g:::::g     |  offsetY     |
+    //              |         | g:::::g     g:::::g     |     |        |
+    //              |         | g::::::g    g:::::g     |     |        |
+    //              |         | g:::::::ggggg:::::g     |     |        |
+    //              |         |  g::::::::::::::::g     |     |      height
+    //              |         |   gg::::::::::::::g     |     |        |
+    //  baseline ---*---------|---- gggggggg::::::g-----*--------      |
+    //            / |         |             g:::::g     |              |
+    //     origin   |         | gggggg      g:::::g     |              |
+    //              |         | g:::::gg   gg:::::g     |              |
+    //              |         |  g::::::ggg:::::::g     |              |
+    //              |         |   gg:::::::::::::g      |              |
+    //              |         |     ggg::::::ggg        |              |
+    //              |         |         gggggg          |              v
+    //              |         +-------------------------+----------------- ymin
+    //              |                                   |
+    //              |------------- advanceX ----------->|
+
+    /// A structure that describe a glyph.
+    struct GlyphInfo
+    {
+        int         Width;              // Glyph's width in pixels.
+        int         Height;             // Glyph's height in pixels.
+        FT_Int      OffsetX;            // The distance from the origin ("pen position") to the left of the glyph.
+        FT_Int      OffsetY;            // The distance from the origin to the top of the glyph. This is usually a value < 0.
+        float       AdvanceX;           // The distance from the origin to the origin of the next glyph. This is usually a value > 0.
+    };
+
+    // Font parameters and metrics.
+    struct FontInfo
+    {
+        uint32_t    PixelHeight;        // Size this font was generated with.
+        float       Ascender;           // The pixel extents above the baseline in pixels (typically positive).
+        float       Descender;          // The extents below the baseline in pixels (typically negative).
+        float       LineSpacing;        // The baseline-to-baseline distance. Note that it usually is larger than the sum of the ascender and descender taken as absolute values. There is also no guarantee that no glyphs extend above or below subsequent baselines when using this distance. Think of it as a value the designer of the font finds appropriate.
+        float       LineGap;            // The spacing in pixels between one row's descent and the next row's ascent.
+        float       MaxAdvanceWidth;    // This field gives the maximum horizontal cursor advance for all glyphs in the font.
+    };
+
+    // FreeType glyph rasterizer.
+    // NB: No ctor/dtor, explicitly call Init()/Shutdown()
+    struct FreeTypeFont
+    {
+        bool                    InitFont(FT_Library ft_library, const ImFontConfig& cfg, unsigned int extra_user_flags); // Initialize from an external data buffer. Doesn't copy data, and you must ensure it stays valid up to this object lifetime.
+        void                    CloseFont();
+        void                    SetPixelHeight(int pixel_height); // Change font pixel size. All following calls to RasterizeGlyph() will use this size
+        const FT_Glyph_Metrics* LoadGlyph(uint32_t in_codepoint);
+        const FT_Bitmap*        RenderGlyphAndGetInfo(GlyphInfo* out_glyph_info);
+        void                    BlitGlyph(const FT_Bitmap* ft_bitmap, uint8_t* dst, uint32_t dst_pitch, unsigned char* multiply_table = NULL);
+        ~FreeTypeFont()         { CloseFont(); }
+
+        // [Internals]
+        FontInfo        Info;               // Font descriptor of the current font.
+        FT_Face         Face;
+        unsigned int    UserFlags;          // = ImFontConfig::RasterizerFlags
+        FT_Int32        LoadFlags;
+        FT_Render_Mode  RenderMode;
+    };
+
+    // From SDL_ttf: Handy routines for converting from fixed point
+    #define FT_CEIL(X)  (((X + 63) & -64) / 64)
+
+    bool FreeTypeFont::InitFont(FT_Library ft_library, const ImFontConfig& cfg, unsigned int extra_user_flags)
+    {
+        FT_Error error = FT_New_Memory_Face(ft_library, (uint8_t*)cfg.FontData, (uint32_t)cfg.FontDataSize, (uint32_t)cfg.FontNo, &Face);
+        if (error != 0)
+            return false;
+        error = FT_Select_Charmap(Face, FT_ENCODING_UNICODE);
+        if (error != 0)
+            return false;
+
+        memset(&Info, 0, sizeof(Info));
+        SetPixelHeight((uint32_t)cfg.SizePixels);
+
+        // Convert to FreeType flags (NB: Bold and Oblique are processed separately)
+        UserFlags = cfg.RasterizerFlags | extra_user_flags;
+        LoadFlags = FT_LOAD_NO_BITMAP;
+        if (UserFlags & ImGuiFreeType::NoHinting)
+            LoadFlags |= FT_LOAD_NO_HINTING;
+        if (UserFlags & ImGuiFreeType::NoAutoHint)
+            LoadFlags |= FT_LOAD_NO_AUTOHINT;
+        if (UserFlags & ImGuiFreeType::ForceAutoHint)
+            LoadFlags |= FT_LOAD_FORCE_AUTOHINT;
+        if (UserFlags & ImGuiFreeType::LightHinting)
+            LoadFlags |= FT_LOAD_TARGET_LIGHT;
+        else if (UserFlags & ImGuiFreeType::MonoHinting)
+            LoadFlags |= FT_LOAD_TARGET_MONO;
+        else
+            LoadFlags |= FT_LOAD_TARGET_NORMAL;
+
+        if (UserFlags & ImGuiFreeType::Monochrome)
+            RenderMode = FT_RENDER_MODE_MONO;
+        else
+            RenderMode = FT_RENDER_MODE_NORMAL;
+
+        return true;
+    }
+
+    void FreeTypeFont::CloseFont()
+    {
+        if (Face)
+        {
+            FT_Done_Face(Face);
+            Face = NULL;
+        }
+    }
+
+    void FreeTypeFont::SetPixelHeight(int pixel_height)
+    {
+        // Vuhdo: I'm not sure how to deal with font sizes properly. As far as I understand, currently ImGui assumes that the 'pixel_height'
+        // is a maximum height of an any given glyph, i.e. it's the sum of font's ascender and descender. Seems strange to me.
+        // NB: FT_Set_Pixel_Sizes() doesn't seem to get us the same result.
+        FT_Size_RequestRec req;
+        req.type = FT_SIZE_REQUEST_TYPE_REAL_DIM;
+        req.width = 0;
+        req.height = (uint32_t)pixel_height * 64;
+        req.horiResolution = 0;
+        req.vertResolution = 0;
+        FT_Request_Size(Face, &req);
+
+        // Update font info
+        FT_Size_Metrics metrics = Face->size->metrics;
+        Info.PixelHeight = (uint32_t)pixel_height;
+        Info.Ascender = (float)FT_CEIL(metrics.ascender);
+        Info.Descender = (float)FT_CEIL(metrics.descender);
+        Info.LineSpacing = (float)FT_CEIL(metrics.height);
+        Info.LineGap = (float)FT_CEIL(metrics.height - metrics.ascender + metrics.descender);
+        Info.MaxAdvanceWidth = (float)FT_CEIL(metrics.max_advance);
+    }
+
+    const FT_Glyph_Metrics* FreeTypeFont::LoadGlyph(uint32_t codepoint)
+    {
+        uint32_t glyph_index = FT_Get_Char_Index(Face, codepoint);
+        if (glyph_index == 0)
+            return NULL;
+        FT_Error error = FT_Load_Glyph(Face, glyph_index, LoadFlags);
+        if (error)
+            return NULL;
+
+        // Need an outline for this to work
+        FT_GlyphSlot slot = Face->glyph;
+        IM_ASSERT(slot->format == FT_GLYPH_FORMAT_OUTLINE);
+
+        // Apply convenience transform (this is not picking from real "Bold"/"Italic" fonts! Merely applying FreeType helper transform. Oblique == Slanting)
+        if (UserFlags & ImGuiFreeType::Bold)
+            FT_GlyphSlot_Embolden(slot);
+        if (UserFlags & ImGuiFreeType::Oblique)
+        {
+            FT_GlyphSlot_Oblique(slot);
+            //FT_BBox bbox;
+            //FT_Outline_Get_BBox(&slot->outline, &bbox);
+            //slot->metrics.width = bbox.xMax - bbox.xMin;
+            //slot->metrics.height = bbox.yMax - bbox.yMin;
+        }
+
+        return &slot->metrics;
+    }
+
+    const FT_Bitmap* FreeTypeFont::RenderGlyphAndGetInfo(GlyphInfo* out_glyph_info)
+    {
+        FT_GlyphSlot slot = Face->glyph;
+        FT_Error error = FT_Render_Glyph(slot, RenderMode);
+        if (error != 0)
+            return NULL;
+
+        FT_Bitmap* ft_bitmap = &Face->glyph->bitmap;
+        out_glyph_info->Width = (int)ft_bitmap->width;
+        out_glyph_info->Height = (int)ft_bitmap->rows;
+        out_glyph_info->OffsetX = Face->glyph->bitmap_left;
+        out_glyph_info->OffsetY = -Face->glyph->bitmap_top;
+        out_glyph_info->AdvanceX = (float)FT_CEIL(slot->advance.x);
+
+        return ft_bitmap;
+    }
+
+    void FreeTypeFont::BlitGlyph(const FT_Bitmap* ft_bitmap, uint8_t* dst, uint32_t dst_pitch, unsigned char* multiply_table)
+    {
+        IM_ASSERT(ft_bitmap != NULL);
+        const uint32_t w = ft_bitmap->width;
+        const uint32_t h = ft_bitmap->rows;
+        const uint8_t* src = ft_bitmap->buffer;
+        const uint32_t src_pitch = ft_bitmap->pitch;
+
+        switch (ft_bitmap->pixel_mode)
+        {
+        case FT_PIXEL_MODE_GRAY: // Grayscale image, 1 byte per pixel.
+            {
+                if (multiply_table == NULL)
+                {
+                    for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
+                        memcpy(dst, src, w);
+                }
+                else
+                {
+                    for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
+                        for (uint32_t x = 0; x < w; x++)
+                            dst[x] = multiply_table[src[x]];
+                }
+                break;
+            }
+        case FT_PIXEL_MODE_MONO: // Monochrome image, 1 bit per pixel. The bits in each byte are ordered from MSB to LSB.
+            {
+                uint8_t color0 = multiply_table ? multiply_table[0] : 0;
+                uint8_t color1 = multiply_table ? multiply_table[255] : 255;
+                for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
+                {
+                    uint8_t bits = 0;
+                    const uint8_t* bits_ptr = src;
+                    for (uint32_t x = 0; x < w; x++, bits <<= 1)
+                    {
+                        if ((x & 7) == 0)
+                            bits = *bits_ptr++;
+                        dst[x] = (bits & 0x80) ? color1 : color0;
+                    }
+                }
+                break;
+            }
+        default:
+            IM_ASSERT(0 && "FreeTypeFont::BlitGlyph(): Unknown bitmap pixel mode!");
+        }
+    }
+}
+
+#ifndef STB_RECT_PACK_IMPLEMENTATION                        // in case the user already have an implementation in the _same_ compilation unit (e.g. unity builds)
+#ifndef IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
+#define STBRP_ASSERT(x)     do { IM_ASSERT(x); } while (0)
+#define STBRP_STATIC
+#define STB_RECT_PACK_IMPLEMENTATION
+#endif
+#ifdef IMGUI_STB_RECT_PACK_FILENAME
+#include IMGUI_STB_RECT_PACK_FILENAME
+#else
+#include "imstb_rectpack.h"
+#endif
+#endif
+
+struct ImFontBuildSrcGlyphFT
+{
+    GlyphInfo           Info;
+    uint32_t            Codepoint;
+    unsigned char*      BitmapData;         // Point within one of the dst_tmp_bitmap_buffers[] array
+};
+
+struct ImFontBuildSrcDataFT
+{
+    FreeTypeFont        Font;
+    stbrp_rect*         Rects;              // Rectangle to pack. We first fill in their size and the packer will give us their position.
+    const ImWchar*      SrcRanges;          // Ranges as requested by user (user is allowed to request too much, e.g. 0x0020..0xFFFF)
+    int                 DstIndex;           // Index into atlas->Fonts[] and dst_tmp_array[]
+    int                 GlyphsHighest;      // Highest requested codepoint
+    int                 GlyphsCount;        // Glyph count (excluding missing glyphs and glyphs already set by an earlier source font)
+    ImBitVector         GlyphsSet;          // Glyph bit map (random access, 1-bit per codepoint. This will be a maximum of 8KB)
+    ImVector<ImFontBuildSrcGlyphFT>   GlyphsList;
+};
+
+// Temporary data for one destination ImFont* (multiple source fonts can be merged into one destination ImFont)
+struct ImFontBuildDstDataFT
+{
+    int                 SrcCount;           // Number of source fonts targeting this destination font.
+    int                 GlyphsHighest;
+    int                 GlyphsCount;
+    ImBitVector         GlyphsSet;          // This is used to resolve collision when multiple sources are merged into a same destination font.
+};
+
+bool ImFontAtlasBuildWithFreeType(FT_Library ft_library, ImFontAtlas* atlas, unsigned int extra_flags)
+{
+    IM_ASSERT(atlas->ConfigData.Size > 0);
+
+    ImFontAtlasBuildInit(atlas);
+
+    // Clear atlas
+    atlas->TexID = (ImTextureID)NULL;
+    atlas->TexWidth = atlas->TexHeight = 0;
+    atlas->TexUvScale = ImVec2(0.0f, 0.0f);
+    atlas->TexUvWhitePixel = ImVec2(0.0f, 0.0f);
+    atlas->ClearTexData();
+
+    // Temporary storage for building
+    ImVector<ImFontBuildSrcDataFT> src_tmp_array;
+    ImVector<ImFontBuildDstDataFT> dst_tmp_array;
+    src_tmp_array.resize(atlas->ConfigData.Size);
+    dst_tmp_array.resize(atlas->Fonts.Size);
+    memset(src_tmp_array.Data, 0, (size_t)src_tmp_array.size_in_bytes());
+    memset(dst_tmp_array.Data, 0, (size_t)dst_tmp_array.size_in_bytes());
+
+    // 1. Initialize font loading structure, check font data validity
+    for (int src_i = 0; src_i < atlas->ConfigData.Size; src_i++)
+    {
+        ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
+        ImFontConfig& cfg = atlas->ConfigData[src_i];
+        FreeTypeFont& font_face = src_tmp.Font;
+        IM_ASSERT(cfg.DstFont && (!cfg.DstFont->IsLoaded() || cfg.DstFont->ContainerAtlas == atlas));
+
+        // Find index from cfg.DstFont (we allow the user to set cfg.DstFont. Also it makes casual debugging nicer than when storing indices)
+        src_tmp.DstIndex = -1;
+        for (int output_i = 0; output_i < atlas->Fonts.Size && src_tmp.DstIndex == -1; output_i++)
+            if (cfg.DstFont == atlas->Fonts[output_i])
+                src_tmp.DstIndex = output_i;
+        IM_ASSERT(src_tmp.DstIndex != -1); // cfg.DstFont not pointing within atlas->Fonts[] array?
+        if (src_tmp.DstIndex == -1)
+            return false;
+
+        // Load font
+        if (!font_face.InitFont(ft_library, cfg, extra_flags))
+            return false;
+
+        // Measure highest codepoints
+        ImFontBuildDstDataFT& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
+        src_tmp.SrcRanges = cfg.GlyphRanges ? cfg.GlyphRanges : atlas->GetGlyphRangesDefault();
+        for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
+            src_tmp.GlyphsHighest = ImMax(src_tmp.GlyphsHighest, (int)src_range[1]);
+        dst_tmp.SrcCount++;
+        dst_tmp.GlyphsHighest = ImMax(dst_tmp.GlyphsHighest, src_tmp.GlyphsHighest);
+    }
+
+    // 2. For every requested codepoint, check for their presence in the font data, and handle redundancy or overlaps between source fonts to avoid unused glyphs.
+    int total_glyphs_count = 0;
+    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
+    {
+        ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
+        ImFontBuildDstDataFT& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
+        src_tmp.GlyphsSet.Create(src_tmp.GlyphsHighest + 1);
+        if (dst_tmp.GlyphsSet.Storage.empty())
+            dst_tmp.GlyphsSet.Create(dst_tmp.GlyphsHighest + 1);
+
+        for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
+            for (int codepoint = src_range[0]; codepoint <= src_range[1]; codepoint++)
+            {
+                if (dst_tmp.GlyphsSet.TestBit(codepoint))    // Don't overwrite existing glyphs. We could make this an option (e.g. MergeOverwrite)
+                    continue;
+                uint32_t glyph_index = FT_Get_Char_Index(src_tmp.Font.Face, codepoint); // It is actually in the font? (FIXME-OPT: We are not storing the glyph_index..)
+                if (glyph_index == 0)
+                    continue;
+
+                // Add to avail set/counters
+                src_tmp.GlyphsCount++;
+                dst_tmp.GlyphsCount++;
+                src_tmp.GlyphsSet.SetBit(codepoint);
+                dst_tmp.GlyphsSet.SetBit(codepoint);
+                total_glyphs_count++;
+            }
+    }
+
+    // 3. Unpack our bit map into a flat list (we now have all the Unicode points that we know are requested _and_ available _and_ not overlapping another)
+    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
+    {
+        ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
+        src_tmp.GlyphsList.reserve(src_tmp.GlyphsCount);
+
+        IM_ASSERT(sizeof(src_tmp.GlyphsSet.Storage.Data[0]) == sizeof(ImU32));
+        const ImU32* it_begin = src_tmp.GlyphsSet.Storage.begin();
+        const ImU32* it_end = src_tmp.GlyphsSet.Storage.end();
+        for (const ImU32* it = it_begin; it < it_end; it++)
+            if (ImU32 entries_32 = *it)
+                for (ImU32 bit_n = 0; bit_n < 32; bit_n++)
+                    if (entries_32 & ((ImU32)1 << bit_n))
+                    {
+                        ImFontBuildSrcGlyphFT src_glyph;
+                        memset(&src_glyph, 0, sizeof(src_glyph));
+                        src_glyph.Codepoint = (ImWchar)(((it - it_begin) << 5) + bit_n);
+                        //src_glyph.GlyphIndex = 0; // FIXME-OPT: We had this info in the previous step and lost it..
+                        src_tmp.GlyphsList.push_back(src_glyph);
+                    }
+        src_tmp.GlyphsSet.Clear();
+        IM_ASSERT(src_tmp.GlyphsList.Size == src_tmp.GlyphsCount);
+    }
+    for (int dst_i = 0; dst_i < dst_tmp_array.Size; dst_i++)
+        dst_tmp_array[dst_i].GlyphsSet.Clear();
+    dst_tmp_array.clear();
+
+    // Allocate packing character data and flag packed characters buffer as non-packed (x0=y0=x1=y1=0)
+    // (We technically don't need to zero-clear buf_rects, but let's do it for the sake of sanity)
+    ImVector<stbrp_rect> buf_rects;
+    buf_rects.resize(total_glyphs_count);
+    memset(buf_rects.Data, 0, (size_t)buf_rects.size_in_bytes());
+
+    // Allocate temporary rasterization data buffers.
+    // We could not find a way to retrieve accurate glyph size without rendering them.
+    // (e.g. slot->metrics->width not always matching bitmap->width, especially considering the Oblique transform)
+    // We allocate in chunks of 256 KB to not waste too much extra memory ahead. Hopefully users of FreeType won't find the temporary allocations.
+    const int BITMAP_BUFFERS_CHUNK_SIZE = 256 * 1024;
+    int buf_bitmap_current_used_bytes = 0;
+    ImVector<unsigned char*> buf_bitmap_buffers;
+    buf_bitmap_buffers.push_back((unsigned char*)IM_ALLOC(BITMAP_BUFFERS_CHUNK_SIZE));
+
+    // 4. Gather glyphs sizes so we can pack them in our virtual canvas.
+    // 8. Render/rasterize font characters into the texture
+    int total_surface = 0;
+    int buf_rects_out_n = 0;
+    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
+    {
+        ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
+        ImFontConfig& cfg = atlas->ConfigData[src_i];
+        if (src_tmp.GlyphsCount == 0)
+            continue;
+
+        src_tmp.Rects = &buf_rects[buf_rects_out_n];
+        buf_rects_out_n += src_tmp.GlyphsCount;
+
+        // Compute multiply table if requested
+        const bool multiply_enabled = (cfg.RasterizerMultiply != 1.0f);
+        unsigned char multiply_table[256];
+        if (multiply_enabled)
+            ImFontAtlasBuildMultiplyCalcLookupTable(multiply_table, cfg.RasterizerMultiply);
+
+        // Gather the sizes of all rectangles we will need to pack
+        const int padding = atlas->TexGlyphPadding;
+        for (int glyph_i = 0; glyph_i < src_tmp.GlyphsList.Size; glyph_i++)
+        {
+            ImFontBuildSrcGlyphFT& src_glyph = src_tmp.GlyphsList[glyph_i];
+
+            const FT_Glyph_Metrics* metrics = src_tmp.Font.LoadGlyph(src_glyph.Codepoint);
+            IM_ASSERT(metrics != NULL);
+            if (metrics == NULL)
+                continue;
+
+            // Render glyph into a bitmap (currently held by FreeType)
+            const FT_Bitmap* ft_bitmap = src_tmp.Font.RenderGlyphAndGetInfo(&src_glyph.Info);
+            IM_ASSERT(ft_bitmap);
+
+            // Allocate new temporary chunk if needed
+            const int bitmap_size_in_bytes = src_glyph.Info.Width * src_glyph.Info.Height;
+            if (buf_bitmap_current_used_bytes + bitmap_size_in_bytes > BITMAP_BUFFERS_CHUNK_SIZE)
+            {
+                buf_bitmap_current_used_bytes = 0;
+                buf_bitmap_buffers.push_back((unsigned char*)IM_ALLOC(BITMAP_BUFFERS_CHUNK_SIZE));
+            }
+
+            // Blit rasterized pixels to our temporary buffer and keep a pointer to it.
+            src_glyph.BitmapData = buf_bitmap_buffers.back() + buf_bitmap_current_used_bytes;
+            buf_bitmap_current_used_bytes += bitmap_size_in_bytes;
+            src_tmp.Font.BlitGlyph(ft_bitmap, src_glyph.BitmapData, src_glyph.Info.Width * 1, multiply_enabled ? multiply_table : NULL);
+
+            src_tmp.Rects[glyph_i].w = (stbrp_coord)(src_glyph.Info.Width + padding);
+            src_tmp.Rects[glyph_i].h = (stbrp_coord)(src_glyph.Info.Height + padding);
+            total_surface += src_tmp.Rects[glyph_i].w * src_tmp.Rects[glyph_i].h;
+        }
+    }
+
+    // We need a width for the skyline algorithm, any width!
+    // The exact width doesn't really matter much, but some API/GPU have texture size limitations and increasing width can decrease height.
+    // User can override TexDesiredWidth and TexGlyphPadding if they wish, otherwise we use a simple heuristic to select the width based on expected surface.
+    const int surface_sqrt = (int)ImSqrt((float)total_surface) + 1;
+    atlas->TexHeight = 0;
+    if (atlas->TexDesiredWidth > 0)
+        atlas->TexWidth = atlas->TexDesiredWidth;
+    else
+        atlas->TexWidth = (surface_sqrt >= 4096*0.7f) ? 4096 : (surface_sqrt >= 2048*0.7f) ? 2048 : (surface_sqrt >= 1024*0.7f) ? 1024 : 512;
+
+    // 5. Start packing
+    // Pack our extra data rectangles first, so it will be on the upper-left corner of our texture (UV will have small values).
+    const int TEX_HEIGHT_MAX = 1024 * 32;
+    const int num_nodes_for_packing_algorithm = atlas->TexWidth - atlas->TexGlyphPadding;
+    ImVector<stbrp_node> pack_nodes;
+    pack_nodes.resize(num_nodes_for_packing_algorithm);
+    stbrp_context pack_context;
+    stbrp_init_target(&pack_context, atlas->TexWidth, TEX_HEIGHT_MAX, pack_nodes.Data, pack_nodes.Size);
+    ImFontAtlasBuildPackCustomRects(atlas, &pack_context);
+
+    // 6. Pack each source font. No rendering yet, we are working with rectangles in an infinitely tall texture at this point.
+    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
+    {
+        ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
+        if (src_tmp.GlyphsCount == 0)
+            continue;
+
+        stbrp_pack_rects(&pack_context, src_tmp.Rects, src_tmp.GlyphsCount);
+
+        // Extend texture height and mark missing glyphs as non-packed so we won't render them.
+        // FIXME: We are not handling packing failure here (would happen if we got off TEX_HEIGHT_MAX or if a single if larger than TexWidth?)
+        for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
+            if (src_tmp.Rects[glyph_i].was_packed)
+                atlas->TexHeight = ImMax(atlas->TexHeight, src_tmp.Rects[glyph_i].y + src_tmp.Rects[glyph_i].h);
+    }
+
+    // 7. Allocate texture
+    atlas->TexHeight = (atlas->Flags & ImFontAtlasFlags_NoPowerOfTwoHeight) ? (atlas->TexHeight + 1) : ImUpperPowerOfTwo(atlas->TexHeight);
+    atlas->TexUvScale = ImVec2(1.0f / atlas->TexWidth, 1.0f / atlas->TexHeight);
+    atlas->TexPixelsAlpha8 = (unsigned char*)IM_ALLOC(atlas->TexWidth * atlas->TexHeight);
+    memset(atlas->TexPixelsAlpha8, 0, atlas->TexWidth * atlas->TexHeight);
+
+    // 8. Copy rasterized font characters back into the main texture
+    // 9. Setup ImFont and glyphs for runtime
+    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
+    {
+        ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
+        if (src_tmp.GlyphsCount == 0)
+            continue;
+
+        ImFontConfig& cfg = atlas->ConfigData[src_i];
+        ImFont* dst_font = cfg.DstFont; // We can have multiple input fonts writing into a same destination font (when using MergeMode=true)
+
+        const float ascent = src_tmp.Font.Info.Ascender;
+        const float descent = src_tmp.Font.Info.Descender;
+        ImFontAtlasBuildSetupFont(atlas, dst_font, &cfg, ascent, descent);
+        const float font_off_x = cfg.GlyphOffset.x;
+        const float font_off_y = cfg.GlyphOffset.y + IM_ROUND(dst_font->Ascent);
+
+        const int padding = atlas->TexGlyphPadding;
+        for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
+        {
+            ImFontBuildSrcGlyphFT& src_glyph = src_tmp.GlyphsList[glyph_i];
+            stbrp_rect& pack_rect = src_tmp.Rects[glyph_i];
+            IM_ASSERT(pack_rect.was_packed);
+
+            GlyphInfo& info = src_glyph.Info;
+            IM_ASSERT(info.Width + padding <= pack_rect.w);
+            IM_ASSERT(info.Height + padding <= pack_rect.h);
+            const int tx = pack_rect.x + padding;
+            const int ty = pack_rect.y + padding;
+
+            // Blit from temporary buffer to final texture
+            size_t blit_src_stride = (size_t)src_glyph.Info.Width;
+            size_t blit_dst_stride = (size_t)atlas->TexWidth;
+            unsigned char* blit_src = src_glyph.BitmapData;
+            unsigned char* blit_dst = atlas->TexPixelsAlpha8 + (ty * blit_dst_stride) + tx;
+            for (int y = info.Height; y > 0; y--, blit_dst += blit_dst_stride, blit_src += blit_src_stride)
+                memcpy(blit_dst, blit_src, blit_src_stride);
+
+            float char_advance_x_org = info.AdvanceX;
+            float char_advance_x_mod = ImClamp(char_advance_x_org, cfg.GlyphMinAdvanceX, cfg.GlyphMaxAdvanceX);
+            float char_off_x = font_off_x;
+            if (char_advance_x_org != char_advance_x_mod)
+                char_off_x += cfg.PixelSnapH ? IM_FLOOR((char_advance_x_mod - char_advance_x_org) * 0.5f) : (char_advance_x_mod - char_advance_x_org) * 0.5f;
+
+            // Register glyph
+            float x0 = info.OffsetX + char_off_x;
+            float y0 = info.OffsetY + font_off_y;
+            float x1 = x0 + info.Width;
+            float y1 = y0 + info.Height;
+            float u0 = (tx) / (float)atlas->TexWidth;
+            float v0 = (ty) / (float)atlas->TexHeight;
+            float u1 = (tx + info.Width) / (float)atlas->TexWidth;
+            float v1 = (ty + info.Height) / (float)atlas->TexHeight;
+            dst_font->AddGlyph((ImWchar)src_glyph.Codepoint, x0, y0, x1, y1, u0, v0, u1, v1, char_advance_x_mod);
+        }
+
+        src_tmp.Rects = NULL;
+    }
+
+    // Cleanup
+    for (int buf_i = 0; buf_i < buf_bitmap_buffers.Size; buf_i++)
+        IM_FREE(buf_bitmap_buffers[buf_i]);
+    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
+        src_tmp_array[src_i].~ImFontBuildSrcDataFT();
+
+    ImFontAtlasBuildFinish(atlas);
+
+    return true;
+}
+
+// Default memory allocators
+static void* ImFreeTypeDefaultAllocFunc(size_t size, void* user_data)	{ IM_UNUSED(user_data); return IM_ALLOC(size); }
+static void  ImFreeTypeDefaultFreeFunc(void* ptr, void* user_data)	    { IM_UNUSED(user_data); IM_FREE(ptr); }
+
+// Current memory allocators
+static void* (*GImFreeTypeAllocFunc)(size_t size, void* user_data) = ImFreeTypeDefaultAllocFunc;
+static void  (*GImFreeTypeFreeFunc)(void* ptr, void* user_data) = ImFreeTypeDefaultFreeFunc;
+static void* GImFreeTypeAllocatorUserData = NULL;
+
+// FreeType memory allocation callbacks
+static void* FreeType_Alloc(FT_Memory /*memory*/, long size)
+{
+    return GImFreeTypeAllocFunc((size_t)size, GImFreeTypeAllocatorUserData);
+}
+
+static void FreeType_Free(FT_Memory /*memory*/, void* block)
+{
+    GImFreeTypeFreeFunc(block, GImFreeTypeAllocatorUserData);
+}
+
+static void* FreeType_Realloc(FT_Memory /*memory*/, long cur_size, long new_size, void* block)
+{
+    // Implement realloc() as we don't ask user to provide it.
+    if (block == NULL)
+        return GImFreeTypeAllocFunc((size_t)new_size, GImFreeTypeAllocatorUserData);
+
+    if (new_size == 0)
+    {
+        GImFreeTypeFreeFunc(block, GImFreeTypeAllocatorUserData);
+        return NULL;
+    }
+
+    if (new_size > cur_size)
+    {
+        void* new_block = GImFreeTypeAllocFunc((size_t)new_size, GImFreeTypeAllocatorUserData);
+        memcpy(new_block, block, (size_t)cur_size);
+        GImFreeTypeFreeFunc(block, GImFreeTypeAllocatorUserData);
+        return new_block;
+    }
+
+    return block;
+}
+
+bool ImGuiFreeType::BuildFontAtlas(ImFontAtlas* atlas, unsigned int extra_flags)
+{
+    // FreeType memory management: https://www.freetype.org/freetype2/docs/design/design-4.html
+    FT_MemoryRec_ memory_rec = {};
+    memory_rec.user = NULL;
+    memory_rec.alloc = &FreeType_Alloc;
+    memory_rec.free = &FreeType_Free;
+    memory_rec.realloc = &FreeType_Realloc;
+
+    // https://www.freetype.org/freetype2/docs/reference/ft2-module_management.html#FT_New_Library
+    FT_Library ft_library;
+    FT_Error error = FT_New_Library(&memory_rec, &ft_library);
+    if (error != 0)
+        return false;
+
+    // If you don't call FT_Add_Default_Modules() the rest of code may work, but FreeType won't use our custom allocator.
+    FT_Add_Default_Modules(ft_library);
+
+    bool ret = ImFontAtlasBuildWithFreeType(ft_library, atlas, extra_flags);
+    FT_Done_Library(ft_library);
+
+    return ret;
+}
+
+void ImGuiFreeType::SetAllocatorFunctions(void* (*alloc_func)(size_t sz, void* user_data), void (*free_func)(void* ptr, void* user_data), void* user_data)
+{
+    GImFreeTypeAllocFunc = alloc_func;
+    GImFreeTypeFreeFunc = free_func;
+    GImFreeTypeAllocatorUserData = user_data;
+}
--- a/include/imgui-1.76/misc/freetype/imgui_freetype.h
+++ b/include/imgui-1.76/misc/freetype/imgui_freetype.h
@ -0,0 +1,36 @@
+// dear imgui: wrapper to use FreeType (instead of stb_truetype)
+// Get latest version at https://github.com/ocornut/imgui/tree/master/misc/freetype
+// Original code by @Vuhdo (Aleksei Skriabin), maintained by @ocornut
+
+#pragma once
+
+#include "imgui.h"      // IMGUI_API, ImFontAtlas
+
+namespace ImGuiFreeType
+{
+    // Hinting greatly impacts visuals (and glyph sizes).
+    // When disabled, FreeType generates blurrier glyphs, more or less matches the stb's output.
+    // The Default hinting mode usually looks good, but may distort glyphs in an unusual way.
+    // The Light hinting mode generates fuzzier glyphs but better matches Microsoft's rasterizer.
+
+    // You can set those flags on a per font basis in ImFontConfig::RasterizerFlags.
+    // Use the 'extra_flags' parameter of BuildFontAtlas() to force a flag on all your fonts.
+    enum RasterizerFlags
+    {
+        // By default, hinting is enabled and the font's native hinter is preferred over the auto-hinter.
+        NoHinting       = 1 << 0,   // Disable hinting. This generally generates 'blurrier' bitmap glyphs when the glyph are rendered in any of the anti-aliased modes.
+        NoAutoHint      = 1 << 1,   // Disable auto-hinter.
+        ForceAutoHint   = 1 << 2,   // Indicates that the auto-hinter is preferred over the font's native hinter.
+        LightHinting    = 1 << 3,   // A lighter hinting algorithm for gray-level modes. Many generated glyphs are fuzzier but better resemble their original shape. This is achieved by snapping glyphs to the pixel grid only vertically (Y-axis), as is done by Microsoft's ClearType and Adobe's proprietary font renderer. This preserves inter-glyph spacing in horizontal text.
+        MonoHinting     = 1 << 4,   // Strong hinting algorithm that should only be used for monochrome output.
+        Bold            = 1 << 5,   // Styling: Should we artificially embolden the font?
+        Oblique         = 1 << 6,   // Styling: Should we slant the font, emulating italic style?
+        Monochrome      = 1 << 7    // Disable anti-aliasing. Combine this with MonoHinting for best results!
+    };
+
+    IMGUI_API bool BuildFontAtlas(ImFontAtlas* atlas, unsigned int extra_flags = 0);
+
+    // By default ImGuiFreeType will use IM_ALLOC()/IM_FREE().
+    // However, as FreeType does lots of allocations we provide a way for the user to redirect it to a separate memory heap if desired:
+    IMGUI_API void SetAllocatorFunctions(void* (*alloc_func)(size_t sz, void* user_data), void (*free_func)(void* ptr, void* user_data), void* user_data = NULL);
+}
--- a/src/control/Camera.cpp
+++ b/src/control/Camera.cpp
@ -0,0 +1,95 @@
+#include "Camera.hpp"
+
+#include <glm/gtc/matrix_transform.hpp>
+#include "../render/window.hpp"
+
+Camera::Camera(GLFWwindow *window, const InputMap& inputs): window(window), inputs(inputs) {
+	updateProjection();
+}
+Camera::~Camera() { }
+
+void Camera::updateProjection() {
+	ProjectionMatrix = glm::perspective(FoV, RATIO, Near, Far);
+}
+
+void Camera::update(bool captureMouse, bool captureKeys) {
+	// glfwGetTime is called only once, the first time this function is called
+	static double lastTime = glfwGetTime();
+
+	// Compute time difference between current and last frame
+	double currentTime = glfwGetTime();
+	float deltaTime = float(currentTime - lastTime);
+
+	// Get mouse position
+	if(captureMouse) {
+		int viewportX, viewportY;
+		glfwGetWindowSize(window, &viewportX, &viewportY);
+		if(capturingMouse) {
+			double xPos, yPos;
+			glfwGetCursorPos(window, &xPos, &yPos);
+
+			// Compute new orientation
+			HorizontalAngle += Sensibility * 0.0001f * float(viewportX / 2 - xPos);
+			VerticalAngle += Sensibility * 0.0001f * float(viewportY / 2 - yPos);
+		} else {
+			glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
+			capturingMouse = true;
+		}
+		// Reset mouse position for next frame
+		glfwSetCursorPos(window, viewportX / 2, viewportY / 2);
+	} else if (capturingMouse) {
+		glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
+		capturingMouse = false;
+	}
+
+	// Direction : Spherical coordinates to Cartesian coordinates conversion
+	glm::vec3 direction = getDirection();
+
+	// Right vector
+	glm::vec3 right = glm::vec3(
+		sin(HorizontalAngle - 3.14f / 2.0f),
+		0,
+		cos(HorizontalAngle - 3.14f / 2.0f));
+
+	// Up vector
+	glm::vec3 up = glm::cross(right, direction);
+
+	if(captureKeys) {
+		// Move forward
+		if (inputs.isDown(Input::Forward)) {
+			Position += direction * deltaTime * Speed;
+		}
+		// Move backward
+		if (inputs.isDown(Input::Backward)) {
+			Position -= direction * deltaTime * Speed;
+		}
+		// Strafe right
+		if (inputs.isDown(Input::Right)) {
+			Position += right * deltaTime * Speed;
+		}
+		// Strafe left
+		if (inputs.isDown(Input::Left)) {
+			Position -= right * deltaTime * Speed;
+		}
+		// Move up
+		if (inputs.isDown(Input::Up)) {
+			Position += up * deltaTime * Speed;
+		}
+		// Move down
+		if (inputs.isDown(Input::Down)) {
+			Position -= up * deltaTime * Speed;
+		}
+	}
+
+	// MAYBE: only if moved
+	// MAYBE: save frustum
+	// Camera matrix
+	ViewMatrix = glm::lookAt(
+		Position,			  // Camera is here
+		Position + direction, // and looks here : at the same position, plus "direction"
+		up					  // Head is up (set to 0,-1,0 to look upside-down)
+	);
+
+	// For the next frame, the "last time" will be "now"
+	lastTime = currentTime;
+}
--- a/src/control/Camera.hpp
+++ b/src/control/Camera.hpp
@ -0,0 +1,48 @@
+#pragma once
+
+#include "InputMap.hpp"
+
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+#include "../data/glm.hpp"
+
+/// Moving perspective camera
+class Camera {
+public:
+    Camera(GLFWwindow*, const InputMap&);
+    Camera(Camera &&) = default;
+    Camera(const Camera &) = default;
+    Camera &operator=(Camera &&) = default;
+    Camera &operator=(const Camera &) = default;
+    ~Camera();
+
+    void update(bool captureMouse, bool captureKeys);
+    void updateProjection();
+
+    glm::vec3 getDirection() const { return glm::vec3(cos(VerticalAngle) * sin(HorizontalAngle), sin(VerticalAngle), cos(VerticalAngle) * cos(HorizontalAngle)); }
+
+    glm::mat4 getViewMatrix() const { return ViewMatrix; }
+    glm::mat4 getProjectionMatrix() const { return ProjectionMatrix; }
+    camera_pos getPosition() const { return Position; }
+
+    float FoV = glm::radians(70.f);
+    float Near = 0.1;
+    float Far = 64;
+
+    float Speed = 5.0f;
+    int Sensibility = 50;
+
+private:
+    GLFWwindow *window;
+    const InputMap &inputs;
+
+    glm::mat4 ViewMatrix;
+    glm::mat4 ProjectionMatrix;
+
+    camera_pos Position = glm::vec3(0, 0, 5);
+
+    float HorizontalAngle = 3.14f;
+    float VerticalAngle = 0.0f;
+
+    bool capturingMouse = false;
+};
--- a/src/control/InputMap.cpp
+++ b/src/control/InputMap.cpp
@ -0,0 +1,52 @@
+#include "InputMap.hpp"
+
+InputMap::InputMap(GLFWwindow* window): window(window) { }
+InputMap::~InputMap() { }
+
+void InputMap::saveKeys() {
+    for (auto input : Toggles) {
+        Previous.insert_or_assign(input, isDown(input));
+    }
+    PreviousLeft = isDown(Mouse::Left);
+    PreviousRight = isDown(Mouse::Right);
+}
+
+bool InputMap::isDown(Input input) const {
+    return glfwGetKey(window, Map.at(input)) == GLFW_PRESS;
+}
+bool InputMap::wasDown(Input input) const {
+    return Previous.at(input);
+}
+bool InputMap::isPressing(Input input) const {
+    return isDown(input) && !wasDown(input);
+}
+bool InputMap::isReleasing(Input input) const {
+    return !isDown(input) && wasDown(input);
+}
+
+void InputMap::toggle(bool &val, Input input) const {
+    if(isPressing(input))
+        val = !val;
+}
+
+bool InputMap::isDown(Mouse input) const {
+    return glfwGetMouseButton(window, static_cast<int>(input)) == GLFW_PRESS;
+}
+bool InputMap::wasDown(Mouse input) const {
+    switch (input) {
+    case Mouse::Left:
+        return PreviousLeft;
+
+    case Mouse::Right:
+        return PreviousRight;
+
+    default:
+        return false;
+    }
+}
+bool InputMap::isPressing(Mouse input) const {
+    return isDown(input) && !wasDown(input);
+}
+bool InputMap::isReleasing(Mouse input) const {
+    return !isDown(input) && wasDown(input);
+}
--- a/src/control/InputMap.hpp
+++ b/src/control/InputMap.hpp
@ -0,0 +1,61 @@
+#pragma once
+
+#include <unordered_map>
+#include <vector>
+
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+
+enum class Input {
+    Forward, Backward, Left, Right, Up, Down,
+    Mouse, Debug
+};
+enum class Mouse {
+    Left = GLFW_MOUSE_BUTTON_LEFT,
+    Right = GLFW_MOUSE_BUTTON_RIGHT
+};
+
+/// Handle inputs with name to key mapping table
+class InputMap {
+public:
+    InputMap(GLFWwindow*);
+    InputMap(InputMap &&) = default;
+    InputMap(const InputMap &) = default;
+    InputMap &operator=(InputMap &&) = default;
+    InputMap &operator=(const InputMap &) = default;
+    ~InputMap();
+
+    void saveKeys();
+
+    bool isDown(Input input) const;
+    bool wasDown(Input input) const;
+    bool isPressing(Input input) const;
+    bool isReleasing(Input input) const;
+
+    void toggle(bool &val, Input input) const;
+
+    bool isDown(Mouse input) const;
+    bool wasDown(Mouse input) const;
+    bool isPressing(Mouse input) const;
+    bool isReleasing(Mouse input) const;
+
+private:
+    GLFWwindow *window;
+    std::unordered_map<Input, int> Map = {
+        {Input::Forward, GLFW_KEY_W},
+        {Input::Backward, GLFW_KEY_S},
+        {Input::Left, GLFW_KEY_A},
+        {Input::Right, GLFW_KEY_D},
+        {Input::Up, GLFW_KEY_SPACE},
+        {Input::Down, GLFW_KEY_LEFT_SHIFT},
+        {Input::Mouse, GLFW_KEY_E},
+        {Input::Debug, GLFW_KEY_F3},
+    };
+    const std::vector<Input> Toggles = {
+        Input::Mouse, Input::Debug
+    };
+    std::unordered_map<Input, bool> Previous;
+
+    bool PreviousLeft;
+    bool PreviousRight;
+};
--- a/Show More
+++ b/Show More
				`@ -0,0 +1 @@`
				`CC0 - https://www.patreon.com/gendo - https://3dtextures.me`