KonstantinSeurer
/
mesa
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
157,427 Commits 1 Branch 0 Tags 356 MiB
Commit Graph

2 Commits

Author SHA1 Message Date
Adrian Bunk 7155676618 util/format: NEON is not available with the soft-float ABI 
Fixes: 80923e8d58 ("util/format: Add some NEON intrinsics-based u_format_unpack.")
Reviewed-by: Emma Anholt <emma@anholt.net>
Tested-by: Ross Burton <ross.burton@arm.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12569>
 2021-09-01 15:18:02 +00:00
Eric Anholt 80923e8d58 util/format: Add some NEON intrinsics-based u_format_unpack. 
In looking at the profile of dEQP, GLES3 was spending 5-10% of its time in
ReadPixels, and almost all of that is b8g8r8a8_unorm8.  It's really slow
because we're getting about 47MB/s by doing uncached reads 32 bits at a
time in the code-generated unpack.  If we use NEON to generate larger bus
transactions, we can speed things up to 136MB/s.  In comparison, raw
ldr/str read/writes with no byte swapping can hit a max of 216MB/sec.

Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10014>
 2021-04-19 17:59:44 +00:00