public void ProcessSurface(int surfaceIdx, string uvSet, RawFloatTexture opacityTexture)
{
if (opacityTexture.image == null)
{
ProcessConstantSurface(surfaceIdx, opacityTexture.value);
}
else
{
bool isLinear = TextureImporter.IsLinear(opacityTexture.image, TextureProcessingType.SingleChannel);
ProcessTexturedSurface(surfaceIdx, uvSet, opacityTexture.image.file, isLinear);
}
}