40 lines
1.2 KiB
GLSL
40 lines
1.2 KiB
GLSL
#version 330 core
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#extension GL_ARB_shading_language_420pack : enable
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uniform mat4 projection_matrix;
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uniform mat4 view_matrix;
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uniform mat4 model_matrix;
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const uint lights = 2u;
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const vec3 lightPos[lights] = {vec3(2.0, -2.0, 10.0),
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vec3(2.0, 2.0, 10.0)};
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const vec3 lightColor[lights] = {vec3(1.0, 0.9, 0.8),
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vec3(0.0, 1.0, 0.0)};
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const float lightIntensity[lights] = {75.0, 25.0};
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layout(location = 0) in vec3 vertex;
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layout(location = 1) in vec2 vertexTC;
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layout(location = 2) in vec3 vertexNorm;
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out vec2 fragTC;
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out vec3 light;
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void main(void) {
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vec4 vertex_Pos = model_matrix * vec4(vertex, 1.0);
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gl_Position = projection_matrix * view_matrix * vertex_Pos;
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fragTC = vertexTC;
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vec3 vertexNorm_trans = (model_matrix*vec4(vertexNorm, 0.0)).xyz;
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light = vec3(0.0, 0.0, 0.0);
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for (uint i = 0u;i < lights;++i) {
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vec3 lightVec = lightPos[i]-vertex_Pos.xyz;
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vec3 lightNorm = normalize(lightVec);
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float lightDist = length(lightVec);
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light += lightColor[i]*clamp(dot(vertexNorm_trans, lightNorm), 0.0, 1.0)*
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clamp(lightIntensity[i]/(lightDist*lightDist), 0.0, 1.0);
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}
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}
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