[cairo] [PATCH 0/3] Optimize VBO size for GL and EGL
bryce at osg.samsung.com
Wed Sep 17 19:28:03 PDT 2014
Any additional comments on this patchset? If not, I'm going to put this
into master by the end of the week.
On Thu, Jul 31, 2014 at 06:51:32PM -0700, Bryce Harrington wrote:
> Last year I posted a patch I'd used in some experiments I did with
> varying the VBO size. I'd found that this had an appreciable (8%)
> performance impact on the firefox-fishbowl tests. Chris Wilson
> suggested some improvements to enable this performance optimization
> to actually get taken advantage of.
> The first patch is the original proposed patch. The second makes the
> VBO size trackable on a per-backend basis. The third applies the actual
> optimization, changing the default VBO size for GL to 1M while leaving
> it at 16k for EGL.
> The firefox-fishbowl test case measures the performance of a large
> number of moving sprites. I do not know of any real-world use cases
> this improves, but presumably the fishbowl test suggests that this patch
> should have some benefit to cairogl-based animation.
> 1: http://www.bryceharrington.org/wordpress/2013/08/vbo-size/
> 2: http://lists.cairographics.org/archives/cairo/2013-August/024576.html
> Bryce Harrington (3):
> cairo-gl: Make VBO size run-time settable
> gl: Track the VBO size as a property of the ctx
> gl: Increase default VBO size on GL to 1M
> src/cairo-egl-context.c | 6 ++++++
> src/cairo-gl-composite.c | 3 ++-
> src/cairo-gl-device.c | 4 +++-
> src/cairo-gl-info.c | 20 ++++++++++++++++++++
> src/cairo-gl-private.h | 9 +++++++--
> 5 files changed, 38 insertions(+), 4 deletions(-)
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