47 lines
962 B
Plaintext
47 lines
962 B
Plaintext
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#ifdef USE_SKINNING
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uniform mat4 bindMatrix;
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uniform mat4 bindMatrixInverse;
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#ifdef BONE_TEXTURE
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uniform sampler2D boneTexture;
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uniform int boneTextureSize;
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mat4 getBoneMatrix( const in float i ) {
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float j = i * 4.0;
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float x = mod( j, float( boneTextureSize ) );
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float y = floor( j / float( boneTextureSize ) );
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float dx = 1.0 / float( boneTextureSize );
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float dy = 1.0 / float( boneTextureSize );
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y = dy * ( y + 0.5 );
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vec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );
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vec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );
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vec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );
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vec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );
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mat4 bone = mat4( v1, v2, v3, v4 );
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return bone;
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}
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#else
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uniform mat4 boneMatrices[ MAX_BONES ];
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mat4 getBoneMatrix( const in float i ) {
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mat4 bone = boneMatrices[ int(i) ];
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return bone;
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}
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#endif
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#endif
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