[Mesa-users] eglInitialize

[Alberich de megres]

sorry to repost again,
but I attached a screenshoot with what happens to me.

With single buffer, just adding glFlush() and a black clear color i
get the result I want.
But if I change the color, no matter wich, i allways the same get the
screen attached (even with the same color)

thanks!
>
> On Fri, Dec 31, 2010 at 12:32 PM, Alberich de megres
> <alberich2k5 at gmail.com> wrote:
>> Oh, sorry for the type, i was trying different clear color and at the
>> end I didn't change it back.
>>
>> But on wayland the server doesn't call glFlush. How it render/draws
>> the background then?
>>
>> Also I tried drmModePageFlip, to change buffers, but i cannot get rid
>> of these wierd things (like lots of thin columns).
>>
>> thanks!
>>
>> On Fri, Dec 31, 2010 at 10:11 AM, Chia-I Wu <olvaffe at gmail.com> wrote:
>>> On Thu, Dec 30, 2010 at 2:26 AM, Alberich de megres
>>> <alberich2k5 at gmail.com> wrote:
>>>> I found my error, I compiled a kernel and forgot some kms options. So
>>>> now i can get a DRMDisplay
>>>>
>>>> But, now I got a different problem:
>>>> I can set a mode, using drm. And I set up the minimun so i should be
>>>> able to clean the backgound (or the buffer) to white and see the
>>>> screen on white. But what i really get is weird things like lots of
>>>> columns...
>>>>
>>>> Is there some place where i can read about drm+egl? My init code is
>>>> barely copy+paste from wayland..
>>>>
>>>> I attached the code, don't blame me for the code (copy+paste stuff)
>>>> i'm only trying to understand how drm+egl works so i can create one by
>>>> my own.
>>> Since you are rendering to rbo[0], you should use fb_id[0] in
>>> drmModeSetCrtc.  You also need to call glFlush at the end of
>>> draw_scene.  The clear color is black, not white as you said.
>>>
>>> These should be enough to see the correct result on screen.  But you
>>> might want to go further to implement double buffering (switch between
>>> rbo[0] and rbo[1], and flip between fb_id[0] and fb_id[1]).
>>>
>>>> thanks!
>>>>
>>>>
>>>> On Mon, Dec 20, 2010 at 1:55 PM, Chia-I Wu <olvaffe at gmail.com> wrote:
>>>>> On Tue, Dec 14, 2010 at 5:24 PM, Alberich de megres
>>>>> <alberich2k5 at gmail.com> wrote:
>>>>>> Hi !!
>>>>>>
>>>>>> I got a problem while initializing egl, using the source on git repo:
>>>>>> git clone git://anongit.freedesktop.org/mesa/mesa
>>>>>>
>>>>>> So what i do is first
>>>>>>
>>>>>> display = (EGLDisplay) eglGetDRMDisplayMESA(fd);
>>>>>> if (display == NULL) return -1;
>>>>>>
>>>>>> if (!eglInitialize(display, &major, &minor)) {
>>>>>> ... error check
>>>>>> }
>>>>>>
>>>>>> When I do that i receive a message:
>>>>>> libEGL warning: failed to create DRM screen
>>>>>>
>>>>>> And sometimes i get this other on the same point:
>>>>>> libEGL warning: failed to create DRM screen
>>>>>> libEGL warning: EGL-DRI2: malformed or no PCI ID
>>>>>>
>>>>>> I tried with both nourveau modeset=1, and radeon modeset=1
>>>>>>
>>>>>> I compiled libdrm with the following options:
>>>>>> ./configure --enable-nouveau-experimental-api --enable-vmwgfx-experimental-api
>>>>>>
>>>>>> And mesa with the following:
>>>>>> ./configure --with-dri-drivers=nouveau --enable-glx-tls
>>>>>> --with-driver=dri --enable-xcb --disable-glut  --enable-egl
>>>>>> --enable-gles2 --with-egl-platforms=drm --disable-gallium
>>>>>>
>>>>>> Also i tried those recomended on wayland site:
>>>>>> ./configure  --enable-egl --enable-gles2
>>>>>>
>>>>>> Can any one point me some light?
>>>>> The configure options look fine.  It is not clear what might have gone
>>>>> wrong.  Can you try again with EGL_LOG_LEVEL=debug set?
>>>>>
>>>>>> thanks!
>>>>>> Albert
>>>>>> _______________________________________________
>>>>>> mesa-users mailing list
>>>>>> mesa-users at lists.freedesktop.org
>>>>>> http://lists.freedesktop.org/mailman/listinfo/mesa-users
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> olv at LunarG.com
>>>>>
>>>>
>>>
>>>
>>>
>>> --
>>> olv at LunarG.com
>>>
>>
>
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