55 lines
1.3 KiB
GLSL
55 lines
1.3 KiB
GLSL
#version 430 core
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layout(location = 0) in vec3 vertexPosition;
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layout(location = 1) in vec2 vertexTexCoord;
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layout(location = 2) in vec3 vertexNormal;
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layout (location = 3) in vec3 aTangent;
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layout (location = 4) in vec3 aBitangent;
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struct PointLight {
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vec3 position;
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vec3 color;
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float intensity;
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};
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#define MAX_POINT_LIGHTS 16
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uniform mat4 transformation;
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uniform mat4 modelMatrix;
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uniform vec3 cameraPos;
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uniform PointLight pointLights[MAX_POINT_LIGHTS];
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uniform int LightsCount;
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out vec3 fragPos;
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out vec2 vTexCoord;
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out vec3 LightPosTS[MAX_POINT_LIGHTS];
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out vec3 CameraPosTS;
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out vec3 FragPosTS;
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void main()
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{
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gl_Position = transformation * vec4(vertexPosition, 1.0);
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mat3 normalMatrix = transpose(inverse(mat3(modelMatrix)));
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vec3 T = normalize(normalMatrix * aTangent);
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vec3 N = normalize(normalMatrix * vertexNormal);
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// re-orthogonalize T with respect to N
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T = normalize(T - dot(T, N) * N);
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// then retrieve perpendicular vector B with the cross product of T and N
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vec3 B = cross(N, T);
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mat3 TBN = mat3(T, B, N);
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for(int i=0; i<LightsCount; i++)
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LightPosTS[i] = TBN * pointLights[i].position;
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CameraPosTS = TBN * cameraPos;
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FragPosTS = TBN * fragPos;
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fragPos = (modelMatrix*vec4(vertexPosition,1)).xyz;
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vTexCoord = vertexTexCoord;
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}
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