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  1. How and when the swap is performed is outside of...

    How and when the swap is performed is outside of the specification for ordinary SwapBuffers. OML_sync_control allows the application to specify when the swap will occur, but it still doesn't mandate...
  2. Ideally we only use these options as a last...

    Ideally we only use these options as a last resort to work around driver bugs, and we do try to use an existing name from another driver if it already exists (at least I do). Controlling...
  3. Sorry, but the reason is that the benchmarks are...

    Sorry, but the reason is that the benchmarks are CPU limited. They are limited by the benchmark saturating a single CPU. At least Intel is... In other words, these benchmarks are at their limit for...
  4. X does not yet report those modules when builtin....

    X does not yet report those modules when builtin. On the other hand, the code in the Xserver is very buggy.
  5. TearFree works correctly with multiple monitors,...

    TearFree works correctly with multiple monitors, rotated, transformed, cloned or just extended. As always, you need to be using recent drivers to avoid bugs, and in particular you should be using at...
  6. It's just called "Intel HD Graphics". Roughly...

    It's just called "Intel HD Graphics". Roughly equal to Ivybridge HD2500 (with a marginally improved architecture).
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    The driver should not be doing detection at all...

    The driver should not be doing detection at all initially, but inheriting the exact mode you were using before. What happens if you then use xrandr? That should report the extra modes you specified...
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    To be fair, it is a GPU bug... Except that they...

    To be fair, it is a GPU bug... Except that they officially do not exist. (UXA triggers the same bugs as well, except there I used a very big hammer and spent the time developing SNA to try to...
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    It is an Option for the driver: Section...

    It is an Option for the driver:


    Section "Device"
    Identifier "Device0"
    Option "TearFree" "true"
    EndSection
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    The crux of the issue is the attempt to...

    The crux of the issue is the attempt to "optimise" updates of the frontbuffer through the use of DRI2CopyRegion (called through MESA_copy_subbuffer). That operation is not specified as being...
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    I will have a workaround of some form before 3.0....

    I will have a workaround of some form before 3.0.



    TearFree would prevent all of that - but really this is a bug in the compositor and DRI2 protocol and should be fixed there.
  12. I find IE10 to be slower than firefox (which has...

    I find IE10 to be slower than firefox (which has had access to hardware acceleration in its UI since 2009) on my i7-3720qm (Ivybridge HD4000).
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    No, I haven't tested those yet. I have to leave...

    No, I haven't tested those yet. I have to leave some excitement for tomorrow.
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    Indeed that is a very good point, something which...

    Indeed that is a very good point, something which is completely missed by the throughput benchmarking. The most important part of the display server is making sure it does not impact upon the rest of...
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    Finished...

    Finished the benchmark run ony my HD5770 (r600g) in a Sandybridge i5-2500. Glamor (as of today) is on average 50% faster than EXA, but is still 2x slower than the CPU for 2D graphics.
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    There are some older results for glamor vs EXA...

    There are some older results for glamor vs EXA using radeon and a HD5770 (my only card), I have some new ones in the works, but suffice to say there isn't much improvement despite the advances in...
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    Eric might as he seems to have a renewed interest...

    Eric might as he seems to have a renewed interest in Glamor. But if the bug is never reported anywhere the chances of it ever being fixed are severly diminished...
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    I'm sorry to hear that, unfortunately it seems to...

    I'm sorry to hear that, unfortunately it seems to have found both of the minor bugs on Ivybridge. The first appears to be an issue with LLC invalidation. Progress is going slow as I am reliant on...
  19. That's correct. One of the big changes noticeable...

    That's correct. One of the big changes noticeable with the UXA to SNA transition is that we go from being driver-limited to application-limited. The most obvious example here is firefox. The biggest...
  20. Based on the architecture it is not. In X,...

    Based on the architecture it is not.


    In X, we render directly to the screen.

    In X+Unity, we render to a backbuffer, tell Unity about what is rendered, Unity copies that to its own backbuffer,...
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