77 lines
2.3 KiB
GLSL
77 lines
2.3 KiB
GLSL
#version 450 core
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layout (constant_id = 0) const bool FOG = true;
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layout (constant_id = 1) const bool PBR = true;
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// FS spe
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layout (constant_id = 5) const bool DO_CURVATURE = false;
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layout (constant_id = 6) const bool CURV_DEPTH = true;
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layout(location = 0) in vec3 Position_modelspace;
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layout(location = 1) in uint Texture_model;
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layout(location = 2) in vec3 Normal_modelspace;
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out VertexData {
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vec3 Position_modelspace;
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flat uint Texture;
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vec3 FaceNormal_modelspace;
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vec3 FaceNormal_worldspace;
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vec3 EyeDirection_cameraspace;
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vec3 LightDirection_cameraspace;
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float Depth;
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} vs;
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#ifdef INSTANCED
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layout(location = 6) in mat4 Model;
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#else
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uniform mat4 Model;
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#endif
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uniform mat4 View;
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uniform mat4 Proj;
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uniform vec4 SphereProj;
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uniform float Curvature;
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uniform vec3 LightInvDirection_worldspace;
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uniform float FogDepth;
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void main(){
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vs.Position_modelspace = Position_modelspace;
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if(DO_CURVATURE) {
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if(Curvature > 0) {
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vec3 Position_areaspace = Position_modelspace + SphereProj.xyz;
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vec2 sph = vec2(acos(Position_areaspace.z / length(Position_areaspace.xyz)), atan(Position_areaspace.y, Position_areaspace.x));
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if(CURV_DEPTH) {
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float radius = max(max(abs(Position_areaspace.x), abs(Position_areaspace.y)), abs(Position_areaspace.z));
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} else {
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float radius = SphereProj.w;
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}
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vs.Position_modelspace = mix(vs.Position_modelspace, vec3(sin(sph.x)*cos(sph.y), sin(sph.x)*sin(sph.y), cos(sph.x)) * radius - SphereProj.xyz, Curvature);
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}
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}
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vec4 Position_cameraspace = View * Model * vec4(vs.Position_modelspace, 1);
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gl_Position = Proj * Position_cameraspace;
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if(FOG) {
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vs.Depth = length(Position_cameraspace.xyz) / FogDepth;
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}
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vs.Texture = Texture_model;
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vs.FaceNormal_modelspace = normalize(Normal_modelspace);
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if(PBR)
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// TODO: correct normal curvature
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vs.FaceNormal_worldspace = normalize((Model * vec4(vs.FaceNormal_modelspace, 0)).xyz);
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// Vector that goes from the vertex to the camera, in camera space.
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// In camera space, the camera is at the origin (0,0,0).
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vs.EyeDirection_cameraspace = vec3(0,0,0) - Position_cameraspace.xyz;
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// Vector that goes from the vertex to the light, in camera space
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vs.LightDirection_cameraspace = (View * vec4(LightInvDirection_worldspace,0)).xyz;
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}
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}
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