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winsys-glx: Don't assume that copy_sub_buffer is synchronized

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We initially assumed that copy_sub_buffer is synchronized on
which is only the case for a subset of GPUs for example it is not
synchronized on INTEL gen6 and gen7, so we remove this assumption
for now.

We should have a specific driver / GPU whitelist if we want to enable
this.

https://bugzilla.gnome.org/show_bug.cgi?id=669122

Reviewed-by: Robert Bragg <robert@linux.intel.com>
Reviewed-by: Neil Roberts <neil@linux.intel.com>
This commit is contained in:
Adel Gadllah 2012-03-14 11:50:58 +01:00 committed by Robert Bragg
parent 161263eb9f
commit fd31da45e2
1 changed files with 8 additions and 0 deletions
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8
cogl/winsys/cogl-winsys-glx-feature-functions.h
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@ -89,7 +89,15 @@ COGL_WINSYS_FEATURE_BEGIN (copy_sub_buffer,
"copy_sub_buffer\0",
0,
0,
/* We initially assumed that copy_sub_buffer is synchronized on
* which is only the case for a subset of GPUs for example it is not
* synchronized on INTEL gen6 and gen7, so we remove this assumption
* for now
*/
#if 0
COGL_WINSYS_FEATURE_SWAP_REGION_SYNCHRONIZED)
#endif
0)
COGL_WINSYS_FEATURE_FUNCTION (void, glXCopySubBuffer,
(Display *dpy,
GLXDrawable drawable,