commit 69066ab61e2f07c33b3de37720ef22d64f8e3771
author Lei Zhang <thestig@chromium.org> Mon Oct 29 20:44:27 2018 +0000
committer Chromium commit bot <commit-bot@chromium.org> Mon Oct 29 20:44:27 2018 +0000
tree d4986eeb798bd8c2f6dceb695fc27576b82248f0
parent ea08d171755bd4088d01261c55d1bfe0ff0f9f39

Do bilinear interpolation for "huge" images.

Simply downsampling produces really poor renderings. Use bilinear
interpolation to make the rendering look better at the cost of being a
bit slower.

Roll DEPS for testing/corpus/ to 5a68e878 to pick up the updated test
expectations from this CL.

BUG=chromium:898443

Change-Id: Ifc5fa358a15e4674f431afcbe26e7ab70da58849
Reviewed-on: https://pdfium-review.googlesource.com/c/44651
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>

DEPS

diff --git a/DEPS b/DEPS
index 5627149..7ccb4b3 100644
--- a/DEPS
+++ b/DEPS
@@ -29,7 +29,7 @@
   'jinja2_revision': '45571de473282bd1d8b63a8dfcb1fd268d0635d2',
   'jpeg_turbo_revision': '61a2bbaa9aec89cb2c882d87ace6aba9aee49bb9',
   'markupsafe_revision': '8f45f5cfa0009d2a70589bcda0349b8cb2b72783',
-  'pdfium_tests_revision': '56802dad1a70683606dc80e3fe1d7a68cfa40869',
+  'pdfium_tests_revision': '5a68e87859476eb75d3e068bd406c4921a6be8e2',
   'skia_revision': '588f879677d4f36e16a42dd96876534f104c2e2f',
   'tools_memory_revision': 'f7b00daf4df7f6c469f5fbc68d7f40f6bd15d6e6',
   'trace_event_revision': '211b3ed9d0481b4caddbee1322321b86a483ca1f',

core/fpdfapi/render/cpdf_imagerenderer.cpp

diff --git a/core/fpdfapi/render/cpdf_imagerenderer.cpp b/core/fpdfapi/render/cpdf_imagerenderer.cpp
index 4ab3e25..ceca944 100644
--- a/core/fpdfapi/render/cpdf_imagerenderer.cpp
+++ b/core/fpdfapi/render/cpdf_imagerenderer.cpp
@@ -374,7 +374,7 @@
 
     if (image_size.ValueOrDie() > FPDF_HUGE_IMAGE_SIZE &&
         !m_ResampleOptions.bHalftone) {
-      m_ResampleOptions.bInterpolateDownsample = true;
+      m_ResampleOptions.bInterpolateBilinear = true;
     }
   }
 #ifdef _SKIA_SUPPORT_