export const vertex = /* glsl */` varying vec3 vWorldDirection; #include void main() { vWorldDirection = transformDirection( position, modelMatrix ); #include #include gl_Position.z = gl_Position.w; // set z to camera.far } `; export const fragment = /* glsl */` #include uniform float opacity; varying vec3 vWorldDirection; #include void main() { vec3 vReflect = vWorldDirection; #include gl_FragColor = envColor; gl_FragColor.a *= opacity; #include #include } `;