[wayland] radeon r200 and "egl_dri2: add swrast" (mesa-from-git)?

Kristian Høgsberg krh at bitplanet.net
Fri Feb 18 06:39:04 PST 2011

On Fri, Feb 18, 2011 at 9:29 AM, Russell Shaw <rjshaw at netspace.net.au> wrote:
> On 18/02/11 03:31, Kristian Høgsberg wrote:
>> On Thu, Feb 17, 2011 at 2:51 AM, Sedat Dilek<sedat.dilek at googlemail.com>
>>  wrote:
>>> Hi,
>>> I tried to jump on the Wayland train at the end of last year, but my
>>> radeon r200 is/was not the ideal hardware platform.
>>> Today, while checking mesa-from-git, I saw the commit "egl_dri2: add
>>> swrast" [1].
>>> I remember Chia-I Wu told me to wait for swrast EGL support.
>>> Thus my question:
>>> Do people like me have now a chance to see a ("stable") wayland (even
>>> a demo) on their screens?
>> I don't think swrast mesa is the right way to go for a un-accelerated
>> Wayland server.  It is possible to do this with the shm buffer sharing
>> and swrast, but a better approach is to not use GL at all if there's
>> no acceleration available.  A cairo (or just pixman directly) based
>> compositor could probably provide a pretty decent performance.
>>> Next question:
>>> (If Yes) What does the autogen/configure line have to look like?
>> There are still missing pieces, it's not just a matter of configure
>> mesa and wayland, sorry.
> How do i get a linear frame buffer without needing cairo or openGL?

Have a look at modetest.c from the drm repo:



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