Babylon.js/src/Shaders/volumetricLightScatteringPass.fragment.fx

#if defined(ALPHATEST) || defined(NEED_UV)
varying vec2 vUV;
#endif

#if defined(ALPHATEST)
uniform sampler2D diffuseSampler;
#endif

void main(void)
{
#if defined(ALPHATEST)
	vec4 diffuseColor = texture2D(diffuseSampler, vUV);

	if (diffuseColor.a < 0.4)
		discard;
#endif

	gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);
}