panda3d/samples/glow-filter/shaders/XBlurShader.sha

//Cg
//
//Cg profile arbvp1 arbfp1

void vshader(float4 vtx_position : POSITION, 
             float2 vtx_texcoord0 : TEXCOORD0,
	     out float4 l_position : POSITION,
	     out float2 l_texcoord0 : TEXCOORD0,
             uniform float4x4 mat_modelproj)
{
  l_position=mul(mat_modelproj, vtx_position);
  l_texcoord0=vtx_texcoord0;
}


void fshader(float2 l_texcoord0 : TEXCOORD0,
             out float4 o_color : COLOR,
             uniform sampler2D tex_0 : TEXUNIT0)
{
  float3 offset = float3(1.0/1024.0, 5.0/1024.0, 9.0/1024.0);
  o_color =  tex2D(tex_0, float2(l_texcoord0.x - offset.z, l_texcoord0.y)) * 5.0;
  o_color += tex2D(tex_0, float2(l_texcoord0.x - offset.y, l_texcoord0.y)) * 8.0;
  o_color += tex2D(tex_0, float2(l_texcoord0.x - offset.x, l_texcoord0.y)) * 10.0;
  o_color += tex2D(tex_0, float2(l_texcoord0.x + offset.x, l_texcoord0.y)) * 10.0;
  o_color += tex2D(tex_0, float2(l_texcoord0.x + offset.y, l_texcoord0.y)) * 8.0;
  o_color += tex2D(tex_0, float2(l_texcoord0.x + offset.z, l_texcoord0.y)) * 5.0;
  o_color = o_color * 0.030;
}