RetroArch/hqflt/cg/blur.cg

/* Default Vertex shader */
void main_vertex
(
	float4 position	: POSITION,
	float4 color	: COLOR,
	float2 texCoord : TEXCOORD0,

    uniform float4x4 modelViewProj,

	out float4 oPosition : POSITION,
	out float4 oColor    : COLOR,
	out float2 otexCoord : TEXCOORD
)
{
	oPosition = mul(modelViewProj, position);
	oColor = color;
	otexCoord = texCoord;
}

const float2 samples[12]
=	{
		-0.326212, -0.405805,
		-0.840144, -0.073580,
		-0.695914,  0.457137,
		-0.203345,  0.620716,
		 0.962340, -0.194983,
		 0.473434, -0.480026,
		 0.519456,  0.767022,
		 0.185461, -0.893124,
		 0.507431,  0.064425,
		 0.896420,  0.412458,
		-0.321940, -0.932615,
		-0.791559, -0.597705
	};

struct output 
{
  float4 col    : COLOR;
};

output main_fragment(in float2 Tex : TEXCOORD0, uniform sampler2D s0 : TEXUNIT0 )
{
	float4 color = tex2D( s0, Tex.xy);
        float BlurFactor = 0.0025; //set between 0.001 and 0.05 

	for (int i = 0; i < 12; i++)
	{
		color += tex2D(s0, Tex + BlurFactor * samples[i]);
	}

   output OUT;
   OUT.col = color / 13;
   return OUT;
}