diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-07-15 13:54:04 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2010-07-16 10:31:58 +0100 |
| commit | 24bdfe0d5eb4e890e9c63bbb4617efaa0768ab7f (patch) | |
| tree | 2259c2b93ac978f55011a21595330b6b532d789f /src/intel_video.h | |
| parent | 2267e5928bd90a6997970584462bd97df447e819 (diff) | |
video: Reuse the old buffers.
After passing the new buffer to the kernel, the old buffer is unpinned
and becomes available for re-use. So keep hold of the old buffer and
swap after a PutImage. This greatly reduces the amount of CPU time
consumed by the kernel on behalf of the video overlay -- by only
allocating two buffers for an entire sequence, we avoid clflushing and
page allocation on every frame.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'src/intel_video.h')
| -rw-r--r-- | src/intel_video.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/intel_video.h b/src/intel_video.h index e1ba09af..d567eace 100644 --- a/src/intel_video.h +++ b/src/intel_video.h @@ -52,7 +52,8 @@ typedef struct { Time offTime; Time freeTime; /** YUV data buffers */ - drm_intel_bo *buf; + drm_intel_bo *buf, *old_buf; + Bool reusable; Bool textured; Rotation rotation; /* should remove intel->rotation later */ |