Quote Originally Posted by mhagain View Post
The point was also made that D3D allows mapping of textures but yet doesn't suffer from any of these hypothetical reasons-for-objection.
Tell me, how D3D allows mapping of swizzled textures in any meaningful way on Windows? I've never heard about such mechanism.

Quote Originally Posted by mhagain View Post
Operating systems and drivers may differ, but the underlying hardware is still the same.
No, the underlying hardware is not the same. NVIDIA hardware works differently than AMD, and both work differently than Intel. Also, even a single vendor's GPUs might change the mechanism from one generation to the other, as I already mentioned.

Quote Originally Posted by mhagain View Post
It's great to theorize about the way things might work internally in hardware, but such theories don't really hold up in the face of a working example that refutes them.
Show me that working example.