Re: [PATCH v2 0/14] MR10349: opengl32: Implement wglGetProcAddress on the client side.

[Rémi Bernon]

> Specs for most of them are available, so we know they don't add new commands. They are just not a part of the official registry.

`GL_ATI_texture_compression_3dc` has no spec. `GL_APPLE_packed_pixels` had a unofficial one but it's now difficult to find, all the tokens it defines are also already defined in OpenGL 1.2, so I don't think exposing it is going to make any difference. The same reasoning as above wrt platform extensions applies for it as well.
> It is part of the extension strings exposed by Mesa. In any case, we could filter it if there is an actual benefit, but I do not see why we would need to. What exactly looks wrong to you?

GLSL extensions aren't supposed to be exposed there, unless they have a matching GL extension to add tokens / commands or change GL behavior. This one doesn't do any of that on the GL side, and I believe it is not meant to be exposed in GL_EXTENSIONS.

This leaves `GL_EXT_texture_edge_clamp` / `GL_EXT_texture_rectangle` / `GL_MESA_texture_signed_rgba` with unofficial specs and which we can expose, yes. And then there are more spec-less extensions that are exposed by native drivers.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/10349#note_133537