export default /* glsl */` uniform vec3 color; uniform float opacity; #include <common> #include <packing> #include <fog_pars_fragment> #include <bsdfs> #include <lights_pars_begin> #include <shadowmap_pars_fragment> #include <shadowmask_pars_fragment> void main() { gl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) ); #include <fog_fragment> } `;