export default /* glsl */`
#ifdef USE_MORPHTARGETS

	uniform float morphTargetBaseInfluence;

	#ifdef MORPHTARGETS_TEXTURE

		uniform float morphTargetInfluences[ MORPHTARGETS_COUNT ];
		uniform sampler2DArray morphTargetsTexture;
		uniform ivec2 morphTargetsTextureSize;

		vec4 getMorph( const in int vertexIndex, const in int morphTargetIndex, const in int offset ) {

			int texelIndex = vertexIndex * MORPHTARGETS_TEXTURE_STRIDE + offset;
			int y = texelIndex / morphTargetsTextureSize.x;
			int x = texelIndex - y * morphTargetsTextureSize.x;

			ivec3 morphUV = ivec3( x, y, morphTargetIndex );
			return texelFetch( morphTargetsTexture, morphUV, 0 );

		}

	#else

		#ifndef USE_MORPHNORMALS

			uniform float morphTargetInfluences[ 8 ];

		#else

			uniform float morphTargetInfluences[ 4 ];

		#endif

	#endif

#endif
`;