[Mesa-dev] R600 tiling halves the frame rate

Patrick Baggett baggett.patrick at gmail.com
Tue Oct 30 07:12:46 PDT 2012

Is your screen refresh rate 70 Hz? Because if so, that means that it's
syncing to the vblank on Mesa, and not doing so on the proprietary one.


On Mon, Oct 29, 2012 at 8:24 PM, Tzvetan Mikov <tmikov at jupiter.com> wrote:

> On 10/28/2012 12:56 PM, Tzvetan Mikov wrote:
>> On 10/28/2012 04:26 AM, Marek Olšák wrote:
>> No, there is no X11 at all. I am running my tests on a very bare system
>> with EGL only, hoping to minimize the test surface and isolate any
>> interferences.
>> I will try it though (it will also enable me to compare against the
>> proprietary drivers as a baseline, I guess).
> This is not directly related to tiling, but I installed the proprietary
> drivers on the same hardware, and I am getting about 3X the performance.
> (From 70 FPS to 225 FPS in 1920x1200 on a HD6460).
> Is it known what the main reason is for such a dramatic performance
> difference between the Mesa R600 driver and proprietary driver? This is a
> very simple test app rendering two textured rectangles on screen, so I am
> guessing the difference must be due to something fundamental.
> regards,
> Tzvetan
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