// imitation of the Unreal Engine 1.x ambient glow effect
// plus brightmapping

void SetupMaterial( inout Material mat )
{
	mat.Base = getTexel(vTexCoord.st);
	float bright = texture(brighttex,vTexCoord.st).x;
	float glow = .25+.2*sin(timer*8.);
	mat.Bright = vec4(vec3(min(1.,bright+glow)),1.);
	mat.Normal = ApplyNormalMap(vTexCoord.st);
}