Mesa Finishes Up OpenGL 3, Lots Of OpenGL 4 Ahead
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The catchup game is accelerating now that the whole driver stack is getting better. Hopefully in some time they will be able to implement features which still aren't released in an official GL standard version.
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What's the status of GLSL 1.40+ and Geometry shaders for the radeon driver?
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Originally posted by stikonas View PostStrange, RadeonFeature matrix claims that 1.4 is possible. See http://xorg.freedesktop.org/wiki/RadeonFeature/
I'm not sure if it could be emulated - note not even r300 can actually do ARB_shadow natively, you have to emulate that functionality in the shader - but r200 only allows for very short shader programs so that could get you into trouble. And IIRC you can't actually emulate it since unlike r300 it cannot sample the required depth buffer formats at all.
Though I guess software fallback would be possible. But those are useless as hell. (That, of course, didn't stop nvidia announcing GL 1.4 support for GeForce 3/4 cards despite that these chips lacked some of the new blend functionality. Thus forcing apps to use hacks to determine if the cards could really do it as of course the performance hit when using this functionality meant that you needed to avoid this functionality no matter what.)
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Originally posted by Nobu View PostWell, seeing as r200 hardware only supports OpenGL 1.3, it can't be that surprising...or were you being faceious?
Similarly, Sandy Bridge CPUs (which have HD 2000/3000 graphics), support only OpenGL 3.1 at most (had to search deep for that one). So, yeah, you're sort of stuck there... Edit: Oh, is the hardware actually capable of 3.3? Interesting...
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Originally posted by caligula View PostYou probably mean open source.
You could also refer to it as "open source" and be right, because they are also OSI-approved licenses.
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Originally posted by caligula View PostYou probably mean open source. The display drivers are not GNU and sharing results is open source. Free software is kind of nice but most GNU projects are a bit outdated when it comes to cutting edge technology.
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Originally posted by caligula View PostYou probably mean open source. The display drivers are not GNU and sharing results is open source. Free software is kind of nice but most GNU projects are a bit outdated when it comes to cutting edge technology.
As a side note, my feeling is that most of mesa developers are paid by vmware/red hat/intel/amd, not hobbists... but i may be wrong there...
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Originally posted by BlackStar View PostIt's really complicated and the driver teams are one tenth the size of what you'd find on Windows (plus a lot of the people are doing this as a hobby, not as paid work.)
The amazing thing is that by sharing code between the drivers, results are coming much faster than in closed-source drivers. Do you know how long it took Intel and Ati to get proper OpenGL support on Windows? Close to a decade. The open-source drivers got there in half the time using teams 1/10 the size.
That's the power of Free Software right there.
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Originally posted by caligula View PostSince Intel is useless POS when is comes to performance, let's hope the driver development for Nvidia and AMD works faster in the future. LLVM compiled, reverse engineered open drivers are the only option for gaming if you don't like commercial quality drivers.
The radeon driver is not the fruit of reverse engineering. Also, who says "commercial" says "bad side effects".
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Originally posted by BlackStar View PostIt's really complicated and the driver teams are one tenth the size of what you'd find on Windows (plus a lot of the people are doing this as a hobby, not as paid work.)
The amazing thing is that by sharing code between the drivers, results are coming much faster than in closed-source drivers. Do you know how long it took Intel and Ati to get proper OpenGL support on Windows? Close to a decade. The open-source drivers got there in half the time using teams 1/10 the size.
That's the power of Free Software right there.
As a side note, my feeling is that most of mesa developers are paid by vmware/red hat/intel/amd, not hobbists... but i may be wrong there...
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