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| author | Eric Anholt <eric@anholt.net> | 2013-12-24 15:11:54 -0800 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2014-01-09 15:39:20 +0800 |
| commit | f46563fe1c8a5560e4de0adf03e3d8770b7fc734 (patch) | |
| tree | e3c442ebd9b81218848e1f3a644d23119e6549ea /src/mesa/drivers/dri/i965/intel_buffer_objects.c | |
| parent | e186b927b8254ce62e0d47db90d16cd4253b3db5 (diff) | |
| download | external_mesa3d-f46563fe1c8a5560e4de0adf03e3d8770b7fc734.zip external_mesa3d-f46563fe1c8a5560e4de0adf03e3d8770b7fc734.tar.gz external_mesa3d-f46563fe1c8a5560e4de0adf03e3d8770b7fc734.tar.bz2 | |
i965: Don't do the temporary-and-blit-copy for INVALIDATE_RANGE maps.
We definitely want to fall through to the unsynchronized map case, instead
of wasting bandwidth on a copy. Prevents a -43.2407% +/- 1.06113% (n=49)
performance regression on aa10perf when teaching glamor to provide the
GL_INVALIDATE_RANGE_BIT information.
This is a performance fix, which I usually wouldn't cherry-pick to stable.
But this was really was just a bug in the code, its presence would
discourage developers from giving us the best information they can, and I
think we've got fairly high confidence in the unsynchronized map path
already.
Cc: 10.0 9.2 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Diffstat (limited to 'src/mesa/drivers/dri/i965/intel_buffer_objects.c')
| -rw-r--r-- | src/mesa/drivers/dri/i965/intel_buffer_objects.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/intel_buffer_objects.c b/src/mesa/drivers/dri/i965/intel_buffer_objects.c index cab805a..84bc29d 100644 --- a/src/mesa/drivers/dri/i965/intel_buffer_objects.c +++ b/src/mesa/drivers/dri/i965/intel_buffer_objects.c @@ -357,7 +357,8 @@ intel_bufferobj_map_range(struct gl_context * ctx, * BO, and we'll copy what they put in there out at unmap or * FlushRange time. */ - if ((access & GL_MAP_INVALIDATE_RANGE_BIT) && + if (!(access & GL_MAP_UNSYNCHRONIZED_BIT) && + (access & GL_MAP_INVALIDATE_RANGE_BIT) && drm_intel_bo_busy(intel_obj->buffer)) { if (access & GL_MAP_FLUSH_EXPLICIT_BIT) { intel_obj->range_map_buffer = malloc(length); |