Parameters =
{
	float3 		gViewDir : auto("ViewDir");
	float3 		gViewOrigin : auto("ViewOrigin");
	mat4x4		gMatViewProj : auto("VP");	
	mat4x4		gMatView : auto("V");
	mat4x4		gMatProj : auto("P");
	mat4x4		gMatInvProj : auto("IP");
	mat4x4		gMatInvViewProj : auto("IVP");
	
	// Special inverse view-projection matrix that had projection entries that affect z and w eliminated.
	// Used to transform a vector(clip_x, clip_y, view_z, view_w), where clip_x/clip_y are in clip space, 
	// and view_z/view_w in view space, into world space
	mat4x4      gMatScreenToWorld : auto("ScreenToWorld");
	
	// Converts device Z to world Z using this formula: worldZ = (1 / (deviceZ + y)) * x
	float2		gDeviceZToWorldZ : auto("DeviceToWorldZ");
	
	// xy - (Viewport size in pixels / 2) / Target size in pixels
	// zw - (Viewport offset in pixels + (Viewport size in pixels / 2) + Optional pixel center offset) / Target size in pixels	
	float4 		gClipToUVScaleOffset : auto("ClipToUVScaleOffset");		
};

Blocks =
{
	Block PerCamera : auto("PerCamera");
};

Technique : base("PerCameraData") =
{
	Language = "HLSL11";

	Pass =
	{
		Common = 
		{
			cbuffer PerCamera
			{
				float3	 gViewDir;
				float3 	 gViewOrigin;
				float4x4 gMatViewProj;
				float4x4 gMatView;
				float4x4 gMatProj;
				float4x4 gMatInvProj;
				float4x4 gMatInvViewProj;
				float4x4 gMatScreenToWorld;
				float2 	 gDeviceZToWorldZ;
				float4 	 gClipToUVScaleOffset;				
			}
		};
	};
};

Technique : base("PerCameraData") =
{
	Language = "GLSL";

	Pass =
	{
		Common = 
		{
			layout(std140) uniform PerCamera
			{
				vec3 gViewDir;
				vec3 gViewOrigin;
				mat4 gMatViewProj;
				mat4 gMatView;
				mat4 gMatProj;
				mat4 gMatInvProj;
				mat4 gMatInvViewProj;
				mat4 gMatScreenToWorld;
				vec2 gDeviceZToWorldZ;
				vec4 gClipToUVScaleOffset;				
			};
		};
	};
};