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authorYu-Ping Wu <yupingso@chromium.org>2021-08-23 16:27:18 +0800
committerFelix Held <felix-coreboot@felixheld.de>2021-08-27 02:53:38 +0000
commit52889c9c9f6d634f580c003b77889301916ef5e5 (patch)
tree84ae4d20b16a01a558c63c485fe883555b21c584 /src/superio/nuvoton/nct6776
parentb69d1dea47552fa0939c884523570b9ce6e42017 (diff)
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>
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