36 lines
1000 B
GLSL
36 lines
1000 B
GLSL
#version 330 core
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layout (location = 0) in vec3 aPos;
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layout (location = 2) in vec4 aWeights;
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layout (location = 3) in vec4 aIndex;
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uniform mat4 model;
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uniform mat4 view;
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uniform mat4 projection;
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//bone related variables
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const int MAX_WEIGHTS = 4;
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const int MAX_BONES = 100;
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uniform mat4 bones[MAX_BONES];
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void main()
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{
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//calculate bone transform
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mat4 BoneTransform = (bones[int(aIndex[0])] * aWeights[0]);
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BoneTransform = BoneTransform + (bones[int(aIndex[1])] * aWeights[1]);
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BoneTransform = BoneTransform + (bones[int(aIndex[2])] * aWeights[2]);
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BoneTransform = BoneTransform + (bones[int(aIndex[3])] * aWeights[3]);
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//apply bone transform to position vectors
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vec4 FinalVertex = BoneTransform * vec4(aPos, 1.0);
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//make sure the W component is 1.0
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FinalVertex = vec4(FinalVertex.xyz, 1.0);
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//have to account for if dont have bones
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FinalVertex = vec4(aPos, 1.0);
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gl_Position = projection * view * model * FinalVertex;
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} |