uniform float4x4 WorldViewProj;
uniform float2 prmAtlasTiles;
uniform float2 atlasHalfPixel;
uniform sampler2D filteredAtlasSampler : register(s0);

struct vsInputWalk
{
    float4 pos			: POSITION;
    float2 tex			: TEXCOORD0;
    float2 texAtlas		: TEXCOORD1;
};

struct vsOutputWalk
{
    float4 pos			: POSITION;
    float2 tex			: TEXCOORD0;
    float2 texAtlas		: TEXCOORD1;
};


vsOutputWalk vsWalk(vsInputWalk input)
{
	vsOutputWalk output = (vsOutputWalk)0;
	output.pos = mul(WorldViewProj, input.pos);
	output.tex = input.tex;
	output.texAtlas = input.texAtlas;	
	return output;
}

float4	psWalk(vsOutputWalk input) : COLOR
{
/*	float3 col = 0;
	for(int iCluster=0; iCluster<16; iCluster++)
	{
		float2 prmTexPos = float2(
			(input.texAtlas.x + (iCluster % prmAtlasTiles.x)) / prmAtlasTiles.x,
			1.0 - (input.texAtlas.y + (iCluster / prmAtlasTiles.x)) / prmAtlasTiles.y) + atlasHalfPixel;

		float4 weight = 0.065;
		float3 val = tex2D(filteredAtlasSampler, prmTexPos);
		col += val.xyz * weight.x;
		iCluster++;
		
		prmTexPos.x += 1.0 / prmAtlasTiles.x;
		val = tex2D(filteredAtlasSampler, prmTexPos);
		col += val.xyz * weight.y;
		iCluster++;
		
		prmTexPos.x += 1.0 / prmAtlasTiles.x;
		val = tex2D(filteredAtlasSampler, prmTexPos);
		col += val.xyz * weight.z;
		iCluster++;
		
		prmTexPos.x += 1.0 / prmAtlasTiles.x;
		val = tex2D(filteredAtlasSampler, prmTexPos);
		col += val.xyz * weight.w;
	}
*/
	float ff = (float)prmAtlasTiles.x;
	return float4( float3(ff,ff,ff) / 128.0/* + col*0.000000001*/, 1);
}