float4 main(float2 texCoord: TEXCOORD0,
            uniform sampler2D textureMap: TEXUNIT0,
            uniform float glow) : COLOR
{
  float3 color0 = tex2D(textureMap, texCoord).rgb;
  float3 color1 = tex2D(textureMap, texCoord + float2(0.5,0)).rgb;
  return float4(color0 * glow + color1*(1-glow),1);
}
