three/src/renderers/shaders/ShaderChunk/morphtarget_vertex.glsl.js

JavaScript 3D library

export default /* glsl */`
#ifdef USE_MORPHTARGETS

	// morphTargetBaseInfluence is set based on BufferGeometry.morphTargetsRelative value:
	// When morphTargetsRelative is false, this is set to 1 - sum(influences); this results in position = sum((target - base) * influence)
	// When morphTargetsRelative is true, this is set to 1; as a result, all morph targets are simply added to the base after weighting
	transformed *= morphTargetBaseInfluence;
	transformed += morphTarget0 * morphTargetInfluences[ 0 ];
	transformed += morphTarget1 * morphTargetInfluences[ 1 ];
	transformed += morphTarget2 * morphTargetInfluences[ 2 ];
	transformed += morphTarget3 * morphTargetInfluences[ 3 ];

	#ifndef USE_MORPHNORMALS

		transformed += morphTarget4 * morphTargetInfluences[ 4 ];
		transformed += morphTarget5 * morphTargetInfluences[ 5 ];
		transformed += morphTarget6 * morphTargetInfluences[ 6 ];
		transformed += morphTarget7 * morphTargetInfluences[ 7 ];

	#endif

#endif
`;