Comment # 20 on bug 66067 from Marek Olšák

(In reply to comment #19)
> By the way, I really wonder how this manages to work correctly with the
> blobs. Are they fixing up the shader on demand somehow?

No idea. Catalyst should be broken too unless it recompiles shaders. The GL
spec says that if GL_TEXTURE_COMPARE_MODE doesn't match the sampler type, the
behavior is undefined.