On Thu, Aug 27, 2009 at 01:24:27PM +0200, RALOVICH, Kristóf wrote:
> On Tue, Aug 25, 2009 at 08:17, Chia-I Wu<olva...@gmail.com> 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.
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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