tree 672a8230aafd02cbcd6692a0b368ec758899c49b
parent 3f80d9332a26eeeb706adfd0bea7cc7390c1b59c
author K. Moon <kmoon@chromium.org> 1679524548 +0000
committer Pdfium LUCI CQ <pdfium-scoped@luci-project-accounts.iam.gserviceaccount.com> 1679524548 +0000

Remove unnecessary Clear(0) from CPDF_RenderStatus

Removes unnecessary CFX_DIBitmap::Clear(0) calls from CPDF_RenderStatus,
since a newly-created CFX_DIBitmap already starts cleared to 0. This
holds for all pixel formats except FXDIB_Format::kRgb32 on Skia, which
clears alpha to 0xFF (fully opaque).

This seems to have a particularly large impact on system time on Linux,
possibly because the kernel doesn't need to zero unwritten memory pages.

Bug: pdfium:2016
Change-Id: I73e2dd0adfd45989bbd17e511320703bceab6ae2
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105390
Reviewed-by: Nigi <nigi@chromium.org>
Auto-Submit: K. Moon <kmoon@chromium.org>
Commit-Queue: Nigi <nigi@chromium.org>
Commit-Queue: K. Moon <kmoon@chromium.org>