isa/mutter
1
0
Fork 0
mirror of https://github.com/brl/mutter.git synced 2024-11-25 17:40:40 -05:00
Code Issues Packages Projects Releases Wiki Activity

cogl: Enable PBO path for all mesa versions when using intel

Browse Source 
There seem to be other cases where the slow path is hit even with mesa 9.0.

https://bugzilla.gnome.org/show_bug.cgi?id=685915

(cherry picked from commit 6b14fa222bafb7e67c4845b26439322b34ac26a2)
This commit is contained in:
Adel Gadllah 2012-10-11 17:59:55 +02:00 committed by Robert Bragg
parent 6cfc93f26f
commit 41d59c0af7
1 changed files with 3 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
cogl/cogl-gpu-info.c
View File

@ -540,14 +540,12 @@ probed:
/* Determine the driver bugs */
/* In Mesa < 8.0.2 the glReadPixels implementation is really slow
because it converts each pixel to a floating point representation
and back even if the data could just be memcpy'd. The Intel
/* In Mesa the glReadPixels implementation is really slow
when using the Intel driver. The Intel
driver has a fast blit path when reading into a PBO. Reading into
a temporary PBO and then memcpying back out to the application's
memory is faster than a regular glReadPixels in this case */
if (gpu->vendor == COGL_GPU_INFO_VENDOR_INTEL &&
gpu->driver_package == COGL_GPU_INFO_DRIVER_PACKAGE_MESA &&
gpu->driver_package_version < COGL_VERSION_ENCODE (8, 0, 2))
gpu->driver_package == COGL_GPU_INFO_DRIVER_PACKAGE_MESA)
gpu->driver_bugs |= COGL_GPU_INFO_DRIVER_BUG_MESA_46631_SLOW_READ_PIXELS;
}