I use the i915 and DRI2.
I find the error of this problem, the path to open the lib i915_dri.so was bad
in the file ..../mesa-7.4.0-1/src/mesa/src/glx/x11/dri_common.c.
Now, I can use this demo with the option "-s s" (sgi_video_sync), but with the
option "-s b"(double buffers), there isn't vertical sync, and I don't find why?
I have noticed that the drivers calls just once the function drm_wait_vblank
(.../linux-kernel-2.6.26-x/src/drivers/gpu/drm/drm_irq.c) with the option "-s
b" whereas it is called many times with "-s s". Is it normal ???
Thanks
Nicolas
________________________________
De : Brian Paul <bri...@vmware.com>
À : Nicolas Cadio <nicolas.ca...@ymail.com>
Cc : "mesa3d-dev@lists.sourceforge.net" <mesa3d-dev@lists.sourceforge.net>
Envoyé le : Lundi, 29 Juin 2009, 17h18mn 57s
Objet : Re: [Mesa3d-dev] Problem with the xdemo glsync
Nicolas Cadio wrote:
> Hi
>
> I want to test the demo glsync (...\progs\xdemos\glsync.c) with the option -s
> b to use the verticale sync.
> The problem is when the function glXSwapBuffer calls the function
> GetGLXDRIDrawable(dpy, drawable, NULL), GetGLXDRIDrawable returns a
> pointer(pdraw) which is NULL.
>
> pdraw is NULL because psc->drawHash is NULL.
>
> The function __glXInitialize(dpy) called from GetGLXDRIDrawable returns a
> display private wich already exists
>
> I want to know why the drawHash structure is NULL and how to do to have a
> drawHash which is not NULL ?
I don't see this problem here with the i965 driver. Which driver are you using?
-Brian
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