On Fri, Aug 28, 2009 at 3:43 AM, Chia-I Wu <[email protected]> wrote:
> On Thu, Aug 27, 2009 at 01:24:27PM +0200, RALOVICH, Kristóf wrote:
> > On Tue, Aug 25, 2009 at 08:17, Chia-I Wu<[email protected]> wrote:
> > > On Mon, Aug 24, 2009 at 02:34:09PM +0200, RALOVICH, Kristóf wrote:
> > >> Is there any way to run EGL under X?
> > > For X, you need to use other drivers. A driver encodes a native window
> > > system information, and hence, EGL_i915 won't work under X.
> > > You can use any of egl_softpipe, egl_xdri, or egl_glx. The latter two
> > > are accelerated, but might take an addtional step to setup. Grep for
> > > LIBGL_DRIVERS_PATH.
> > Could you please give me a hint using either of those 3?
> > EGL_DRIVER=../../lib64/egl_softpipe.so ld-x ./eglgears
> > Only gives me a SEGV, I could not set LIBGL_DRIVERS_PATH in a way to
> > help me further.
> The problem you saw is that eglgears is not written for X. Only the
> demos with prefix xegl will work under X.
>
> eglGetDisplay passes a "native display" to EGL. Under X, this maps to
> "Display *" naturally. However, eglgears passes a string, which is
> casted to "Display *" wrongly and segfaults immediately. I would like
> to improve the situation though. For example, instead of segfault, it
> should print an informative message.
>
Dumb question for sure, but how can eglGetDisplay() determine if one pointer
or another is a Display or a character string?
>
> Both egl_xdri and egl_glx use DRI driver and must know where to find it.
> Unless the DRI driver is installed to ${libdir}/dri, you must set
> LIBGL_DRIVERS_PATH. As for egl_softpipe, it requires a libGL.so
> compiled from src/gallium/winsys/xlib/.
>
> --
> Regards,
> olv
>
>
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