Simple enhanced gbuffer pixel shader

GBuffer_PS.hlsl

polymorphic MakeDepth
{
	CalculateProjectionDepth
}

polymorphic GetWorldNormal
{
	NormalFromInput,
	NormalFromMap
}

pixel_shader float4 PS(PS_INPUT input) : SV_Target needs VERTEX_COLOR
{
	context.depth_p = MakeDepth();

	context.normal_w = GetWorldNormal();

	return float4(context.normal_w.x
		    , context.normal_w.y
		    , context.normal_w.z
		    , context.depth_p);
}