tree b8ab237962a1a227c0692a1d28591cde45911ff9
parent aa332c81994ee5b4a1714efac27fca926380175c
author Lei Zhang <thestig@chromium.org> 1704915713 +0000
committer Pdfium LUCI CQ <pdfium-scoped@luci-project-accounts.iam.gserviceaccount.com> 1704915713 +0000

Change SetBitsWithMask() methods to take alpha as a float

Consistently use float values in more of the graphics stack.
SetBitsWithMask() is Skia-only and Skia actually prefers alpha values as
floats.

Along the way, refactor fx_skia_device.cpp, so SetBitmapPaintForMerge()
has one fewer parameter, considering the only caller passes in a
constant value.

Change-Id: Ica08c73d46997731bd2f6f49ccf0748fca99da36
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/115415
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>