On Wed, Feb 04, 2015 at 10:35:33PM +0000, Ken Moffat wrote:
> I saw that xorg-server-1.17.0 has now been released, so I dropped
> that into my current qemu desktop build (I had been going to test
> 1.16.99.902 but had only done that on the real hardware). I'm using
> the modesetting driver, which is why I was keen to test this (it is
> now part of hte server).
>
> Seems to work ok, but in the log I found these lines:
> (II) glamor: EGL version 1.4 (DRI2):
> EGL_MESA_drm_image required.
> (EE) modeset(0): glamor initialization failed
>
> I'm lost! Google finds lots of links to the original proposal for
> this (from 2010, I think - it is apparently an X extension), but I
> could not find anything telling me where it comes from (Mesa, I
> suppose), nor how to enable it. Any clues, please ?
>
Answering my own question: "Read the source". It is from the
xorg-server glamor code, using libepoxy to check which features are
available.
In xorg-server/glamor_egl.c there are:
#define GLAMOR_CHECK_EGL_EXTENSION(EXT) \
if (!epoxy_has_egl_extension(glamor_egl->display, "EGL_"
#EXT)) { \
ErrorF("EGL_" #EXT " required.\n"); \
return FALSE; \
}
and then
GLAMOR_CHECK_EGL_EXTENSION(MESA_drm_image);
That file correctly includes epoxy/gl.h and epoxy/egl.h.
Within epoxy/egl.h is
#include "epoxy/egl_generated.h"
and within that is
#define EGL_MESA_drm_image 1
So I'll have to take this to one of the X lists, because trying to
debug that will be way above my no-pay grade.
ĸen
--
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Sometimes she went to bed as early as 6 a.m.
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