void main()
{
#ifdef NO_CLIPDISTANCE_SUPPORT
	if (ClipDistanceA.x < 0 || ClipDistanceA.y < 0 || ClipDistanceA.z < 0 || ClipDistanceA.w < 0 || ClipDistanceB.x < 0) discard;
#endif

	Material material = CreateMaterial();
	vec4 frag = material.Base;

#ifndef NO_ALPHATEST
	if (frag.a <= uAlphaThreshold) discard;
#endif

	float fogdist = 0.0;
	float fogfactor = 0.0;

	// calculate fog factor
	if (uFogEnabled != 0)
	{
		if (uFogEnabled == 1 || uFogEnabled == -1) 
		{
			fogdist = max(16.0, pixelpos.w);
		}
		else 
		{
			fogdist = max(16.0, distance(pixelpos.xyz, uCameraPos.xyz));
		}
		fogfactor = exp2 (uFogDensity * fogdist);
	}

	frag = vec4(uFogColor.rgb, (1.0 - fogfactor) * frag.a * 0.75 * vColor.a);

	FragColor = frag;
#ifdef GBUFFER_PASS
	FragFog = vec4(AmbientOcclusionColor(), 1.0);
	FragNormal = vec4(vEyeNormal.xyz * 0.5 + 0.5, 1.0);
#endif
}