source: GTP/trunk/App/Demos/Illum/IBRBillboardCloudTrees/OGRE/IBRTreesOGRE/media/general/indirectTexturingDebugTextureAtlasFitting_FP20.cg @ 1493

void main_fp(float2 texCoord: TEXCOORD0, 
             float2 subTexCoord: TEXCOORD1,
             out float4 ocolor: COLOR,
             uniform sampler2D indirectTexture)
{
   float epsilon = 1.0/256.0;

   ocolor = ( ( (tex2D(indirectTexture,subTexCoord).x - epsilon) != 0.0) && ( (tex2D(indirectTexture,subTexCoord).y + epsilon) != 0.0) ) ? float4(0.3, 0.3, 0.3, 1.0) : float4(1.0, 0.0, 0.0, 1.0);
}