coreboot-kgpe-d16/payloads
Yu-Ping Wu 52889c9c9f libpayload: cbgfx: Clear screen by sequential access
Currently clear_screen() calls set_pixel() to set all pixels. However,
the actual order of pixels being set depends on the framebuffer
orientation. With NORMAL orientation, the framebuffer is accessed
sequentially; with LEFT_UP/RIGHT_UP orientation, it is accessed back and
forth, leading to performance drop (>1 second on bugzzy).

Therefore, ensure sequential access to the framebuffer, regardless of
the orientation.

BUG=b:194967458
TEST=emerge-cherry libpayload
BRANCH=dedede

Change-Id: Iecaff5b6abc24ba4b3859cbc44c0d61b2a90b2d9
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57104
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-08-27 02:53:38 +00:00
..
coreinfo util/kconfig: Uprev to Linux 5.13's kconfig 2021-07-13 20:28:14 +00:00
external payloads/tianocore: update MrChromebox UEFIPAYLOAD branch 2021-08-02 15:19:41 +00:00
libpayload libpayload: cbgfx: Clear screen by sequential access 2021-08-27 02:53:38 +00:00
linuxcheck treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
nvramcui nvramcui: Use libpayload's new `Makefile.payload` 2021-02-07 16:23:33 +00:00
Kconfig option: Turn CMOS option backend into choice 2021-05-28 11:37:16 +00:00
Makefile.inc payloads: Force sub-make runs for in-tree payloads 2021-02-07 16:31:56 +00:00