float4x4 wvp : WorldViewProjection < string UIWidget = "None"; >;  
*============================================================================
 ============= Depth TECHNIQUE ============= 
============================================================================*/
	struct fromAPItoVS { 
	float4 position		: POSITION; 


}; 

struct toPS { 
        float4 position    		: POSITION; 

        float2 pixelDepth    		: TEXCOORD0; 

}; 

toPS VS(fromAPItoVS IN) 
{ 
	toPS OUT = (toPS)0; 
OUT.position = mul(IN.position, wvp);			

OUT.pixelDepth.xy = OUT.position.zw; 		

    return OUT; 
} 

float4 PS(toPS IN) : COLOR
{ 

	float Depth = IN.pixelDepth.x;
	float4 ret =  float4(Depth,1,1, 1); 
	return ret; 
} 

technique Depth 
{  
	pass ambient  
    {		 
		VertexShader = compile vs_3_0 VS(); 

		PixelShader = compile ps_3_0 PS(); 
	}  

}