export default /* glsl */` #ifdef USE_SKINNING uniform mat4 bindMatrix; uniform mat4 bindMatrixInverse; uniform highp sampler2D boneTexture; mat4 getBoneMatrix( const in float i ) { int size = textureSize( boneTexture, 0 ).x; int j = int( i ) * 4; int x = j % size; int y = j / size; vec4 v1 = texelFetch( boneTexture, ivec2( x, y ), 0 ); vec4 v2 = texelFetch( boneTexture, ivec2( x + 1, y ), 0 ); vec4 v3 = texelFetch( boneTexture, ivec2( x + 2, y ), 0 ); vec4 v4 = texelFetch( boneTexture, ivec2( x + 3, y ), 0 ); return mat4( v1, v2, v3, v4 ); } #endif `;