tree cc87d532af0bb6bae0b61615c0c591f875b6268c
parent c6f0ed9885ab063fa81e1b75aa43c58d8c09e132
author Hui Yingst <nigi@chromium.org> 1587514804 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1587514804 +0000

Fix embedder test FPDFFormFillEmbedderTest.FormText for Skia.

Skia uses different font face rendering methods compared to AGG, which
leads to the text rendering discrepancy for Helvetica font in this test
(See https://crbug.com/pdfium/1500#c7).

Also, due to Skia uses premultiplied colors, the method to merge alpha
channel and calculate the premultiplied color results in the final
highlight color to be off by 1 digit compared to AGG's results (See
https://crbug.com/pdfium/1515#c1).

Since Skia's rendering results are acceptable and Skia is working as
intended, this CL adds expected results for Skia to make this embedder
test pass.

Bug: pdfium:1500
Change-Id: I43d29253bc98f45e37e4071124fcd2f6036d64c7
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/68992
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Hui Yingst <nigi@chromium.org>