[Mesa-dev] [PATCH] st/mesa: Don't use PIPE_USAGE_STREAM for GL_PIXEL_UNPACK_BUFFER_ARB

[Michel Dänzer]

On 05.02.2015 12:48, Ilia Mirkin wrote:
> Is there a benchmark that demonstrates this? I'd like to test it out
> with nouveau.

Mesa demos src/tests/streaming_rect on Kaveri (radeonsi):

Unpatched:  42 frames in  1.023 seconds = 41.056 FPS
Patched:   615 frames in  1.000 seconds = 615.000 FPS


For comparison, with Fredrik Höglund's patches for PBO unpack
acceleration, I get 856 frames in  1.000 seconds = 856.000 FPS

BTW, Fredrik, what's the status of those patches? I get one piglit
regression with radeonsi (driver assertion failure in
spec/ARB_pixel_buffer_object/texsubimage pbo), other than that they seem
to work fine.


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer