Babylon.js/src/Shaders/ShadersInclude/morphTargetsVertexDeclaration.fx

#ifdef MORPHTARGETS
	attribute vec3 position{X};

	#ifdef MORPHTARGETS_NORMAL
	attribute vec3 normal{X};
	#endif

	#ifdef MORPHTARGETS_TANGENT
	attribute vec3 tangent{X};
	#endif
#endif