Revert "opengl32: Return a NULL pointer for functions requiring unsupported or disabled extensions.".

Alexandre Julliard julliard at
Thu Nov 26 23:21:13 CST 2015

Henri Verbeet <hverbeet at> writes:

> Essentially, I think the number of affected users doesn't outweigh
> doing the correct thing in this case.

Correct me if I'm wrong, but isn't this simply a matter of returning
glCopyTexSubImage3D if glCopyTexSubImage3DEXT is missing?  That seems a
better solution than relying on quirks of the Nvidia driver.

Could someone please give this a try so that we can solve this
regression for 1.8?

Alexandre Julliard
julliard at

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