@lume/three-instanced-mesh/monkey-patch/begin_vertex.glsl.js

Scene graph level abstraction for three.js InstancedBufferGeometry

// transform vertices with the transform matrix

export default /* glsl */ `
#ifndef INSTANCE_TRANSFORM

vec3 transformed = vec3( position );

#else

#ifndef INSTANCE_MATRIX

	mat4 _instanceMatrix = getInstanceMatrix();

	#define INSTANCE_MATRIX

#endif

vec3 transformed = ( _instanceMatrix * vec4( position , 1. )).xyz;

#endif
`;