36 lines
899 B
Plaintext
36 lines
899 B
Plaintext
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#ifdef USE_HWSKINNING
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#ifndef NUM_BONES
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#error A required pre-processor define "NUM_BONES" is not set!
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#endif
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attribute vec4 inBoneWeight;
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attribute vec4 inBoneIndices;
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uniform mat4 m_BoneMatrices[NUM_BONES];
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void Skinning_Compute(inout vec4 position, inout vec4 normal){
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vec4 index = inBoneIndices;
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vec4 weight = inBoneWeight;
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vec4 newPos = vec4(0.0);
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vec4 newNormal = vec4(0.0);
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for (float i = 0.0; i < 4.0; i += 1.0){
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mat4 skinMat = m_BoneMatrices[int(index.x)];
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newPos += weight.x * (skinMat * position);
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newNormal += weight.x * (skinMat * normal);
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index = index.yzwx;
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weight = weight.yzwx;
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}
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position = newPos;
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normal = newNormal;
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}
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#else
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void Skinning_Compute(inout vec4 position, inout vec4 normal){
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// skinning disabled, leave position and normal unaltered
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}
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#endif
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