ProjectArcade

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void main()
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{
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	//Changethis to increase the number of colors.
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	int numColors =8;
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	float4 to_gray = float4(0.3,0.59,0.11,0);
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	float x1 = dot(to_gray, SampleOffset(int2( 1, 1)));
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	float x0 = dot(to_gray, SampleOffset(int2(-1,-1)));
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	float x3 = dot(to_gray, SampleOffset(int2( 1,-1)));
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	float x2 = dot(to_gray, SampleOffset(int2(-1, 1)));
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	float edge = (x1 - x0) * (x1 - x0) + (x3 - x2) * (x3 - x2);
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	float4 color = Sample();
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	float4 c0 = color - float4(edge, edge, edge, edge) * 12.0;
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	float red   = 0.0;
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	float green = 0.0;
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	float blue  = 0.0;
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	bool rr = false;
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	bool bb = false;
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	bool gg = false;
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	int count = 1;
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	float colorN = 0.0;
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	float colorB = 0.0;
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	for (count = 1; count <= numColors; count++)
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	{
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		colorN = float(count / numColors);
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		if ( c0.r <= colorN && c0.r >= colorB && rr == false )
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		{
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			if (count == 1)
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			{
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				if (colorN >= 0.1)
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					red = 0.01;
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				else
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					red = colorN;
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			}
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			else if (count == numColors)
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				red = 0.95;
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			else
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				red = colorN;
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			 rr = true;
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		}
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		 if (c0.b <= colorN && c0.b >= colorB && bb == false)
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		 {
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			if (count == 1)
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			{
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				if (colorN >= 0.1)
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					blue = 0.01;
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				else
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					blue = colorN;
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			}
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			else if (count == numColors)
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				blue = 0.95;
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			else
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				blue = colorN ;
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			bb = true;
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		}
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		if (c0.g <= colorN && c0.g >= colorB && gg == false)
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		{
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			if (count == 1)
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			{
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				if (colorN >= 0.1)
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					green = 0.01;
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				else
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					green = colorN;
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			}
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			else if (count == numColors)
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				green = 0.95;
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			else
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				green = colorN;
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			gg = true;
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		}
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		colorB = float(count / numColors);
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		if (rr == true && bb == true && gg == true)
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			break;
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	}
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	SetOutput(float4(red, green, blue, c0.a));
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}
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