[osg-users] [Fwd: Mesa and gldirect]

Jan Ciger jan.ciger at gmail.com
Mon Mar 23 14:45:56 PDT 2009

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Jean-Sébastien Guay wrote:
> Hi Jan,
>> Honestly, I think this will be counterproductive. It will only give
>> companies an excuse to neglect OpenGL support further or to drop it
>> completely ("You can use the emulation!"). The latter would be
>> disastrous for all non-Microsoft platforms.
> Since the OpenGL over Direct3D layer will only work on Microsoft
> platforms for obvious reasons, I don't see how this will affect other
> platforms at all. If some developer wants to do 3D on Linux, they have
> to use OpenGL.

Exactly. But if you give an incentive to a vendor to drop that support
("you have emulated driver available!" - very attractive from the costs
point of view), then the non-windows camp is screwed. Remember the thing
Microsoft tried to do for Vista? They tried to implement what you are
proposing - a limited version of OpenGL sitting on top of D3D.

Especially ATI would be only eager to drop OpenGL support if they didn't
have industry on their back. Making this job easier for them is going to
only cost us in the long term.

Or do you seriously think that they would keep OpenGL support on Linux
(a very niche platform for them) if they would be able to drop it for

I think that this would only contribute to decline of OpenGL support in
general by the vendors, because even the majority market wouldn't need
decent drivers any more.


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