Wayland with radeon-KMS pageflipping

[Chia-I Wu]

On Sun, Oct 31, 2010 at 6:30 PM, Sedat Dilek <sedat.dilek at googlemail.com> wrote:
> On Sun, Oct 31, 2010 at 10:53 AM, Chia-I Wu <olvaffe at gmail.com> wrote:
>> On Sun, Oct 31, 2010 at 5:36 PM, Sedat Dilek <sedat.dilek at googlemail.com> wrote:
>>> I made a 2nd wayland build:
>>>
>>> OK, there is definitely a problem with $DISPLAY,
>>> if I use a different one (for example DISPLAY=:1.0), I get "failed to
>>> create compositor".
>>> If I want to use DISPLAY=:0.0, the error-message is "failed to
>>> initialize display" ending with a Segmentation fault.
>>>
>>> Having a look into dmesg:
>>> [   61.979227] lt-compositor[1702]: segfault at 30 ip 0804db9e sp
>>> bf8d2bd0 error 4 in lt-compositor[8048000+a000]
>>>
>>> That's saying not much to me.
>>>
>>> How can I dig deeper into the problem?
>>>
>>> Use and create packages with debug symbols I guess?
>>> For mesa I know there is --debug.
>>> Enable debug-build for cairo-gl and wayland?
>>>
>>> Any suggestions for Linux kernel-config parameters to better debug Wayland?
>> If you runs Wayland on X11, it does not talk to the DRM device.  So
>> there is no pageflipping required and thus no need to worry about the
>> kernel module.
>>
>> I do not think the classic radeon dri driver (--with-dri-drivers=...)
>> has OpenGL ES support.  You are gonna need the gallium one.  IIRC,
>> gallium-based dri drivers do not support surfaceless contexts.  You
>> cannot use egl_dri2 EGL driver.  So you are more or less stuck with
>>
>>  - gallium-based radeon driver
>>  - gallium-based egl driver (egl_gallium)
>>
>> Also, you might want to start with the EGL and OpenGL ES demos found
>> in mesa/demos repository to make sure your setup is working.
>
> Hey Chia-I Wu :-),
>
> nice to see you on Wayland!
>
> Unfortunately, I did *NOT* hope someone will say use radeon-gallium
> r300g/r600g, because r300g is minimum r300-r500.
> As I am here on RV250 (r200) there is currently no chance for use
> radeon-gallium.
>
> I have all Wayland stuff with $PREFIX to /opt/wayland.
> How can I assure that drivers and other stuff is loaded from there?
> I know of the LIBGL_DRIVERS_PATH=/opt/wayland/lib/dri trick, is that enough?
That should be enough for egl_dri2 to find the DRI drivers.

For r200 to work with Wayland, you need to make sure the driver at
least supports the OpenGL ES subset used by Wayland and enable it, and
add support for __DRI_IMAGE extension.
> Currently, I wanted to avoid a system-installation with PREFIX=/usr.
>
> But, I can try "gallium-based egl driver".
> I do not see a --enable-egl-gallium like --enable-gallium-radeon
> (r300g) or --enable-gallium-r600 (r600g) in mesa's configure.ac.
>
> Q: How to build egl_gallium? Via $STATE_TRACKERS
It is by default enabled.  ./configure should give

        EGL drivers:     glx dri2
        EGL tracker:     yes  <-- this is egl_gallium
> BTW, can you tell me which GIT versions you have from mesa
> libxkbcommon cairo-gl wayland working?
All latest except for cairo, which is 147fa7a2.
> Thanks in advance.
>
>
> Kind Regards,
> - Sedat -
>
>
>>> - Sedat -
>>>
>>>
>>> $ echo $DISPLAY
>>> :0.0
>>>
>>> $ cd $HOME/src/wayland/wayland/compositor
>>>
>>> $ LC_ALL=C ; LIBGL_DRIVERS_PATH=/opt/wayland/lib/dri DISPLAY=:1.0
>>> ./compositor -b ../../backgrounds/dscn1843.jpg
>>> failed to create compositor
>>>
>>> $ LC_ALL=C ; LIBGL_DRIVERS_PATH=/opt/wayland/lib/dri DISPLAY=:0.0
>>> ./compositor -b ../../backgrounds/dscn1843.jpg
>>> failed to initialize display
>>> Segmentation fault
>>>
>>> $ dmesg | tail -10
>>> [   21.151574] Bluetooth: RFCOMM socket layer initialized
>>> [   21.151577] Bluetooth: RFCOMM ver 1.11
>>> [   21.156060] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
>>> [   21.156064] Bluetooth: BNEP filters: protocol multicast
>>> [   21.350328] Bluetooth: SCO (Voice Link) ver 0.6
>>> [   21.350333] Bluetooth: SCO socket layer initialized
>>> [   29.904036] wlan0: no IPv6 routers present
>>> [   61.979227] lt-compositor[1702]: segfault at 30 ip 0804db9e sp
>>> bf8d2bd0 error 4 in lt-compositor[8048000+a000]
>>> [  152.636425] lt-compositor[1768]: segfault at 30 ip 0804db9e sp
>>> bf9e7f30 error 4 in lt-compositor[8048000+a000]
>>> [  197.229767] lt-compositor[1803]: segfault at 30 ip 0804db9e sp
>>> bffb9330 error 4 in lt-compositor[8048000+a000]
>>> _______________________________________________
>>> dri-devel mailing list
>>> dri-devel at lists.freedesktop.org
>>> http://lists.freedesktop.org/mailman/listinfo/dri-devel
>>>
>>
>>
>>
>> --
>> olv at LunarG.com
>>
>



-- 
olv at LunarG.com