From e1daa48b9a5f1724cbfa6b00ba964f7fdfe0c3d0 Mon Sep 17 00:00:00 2001
From: msarett <msarett@google.com>
Date: Wed, 3 Feb 2016 15:31:18 -0800
Subject: [PATCH] Fix Unpremul Index8 tests

TBR=scroggo@google.com

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1663323002

Review URL: https://codereview.chromium.org/1663323002
---
 dm/DMSrcSink.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dm/DMSrcSink.cpp b/dm/DMSrcSink.cpp
index 7a260e5820..9576f69d67 100644
--- a/dm/DMSrcSink.cpp
+++ b/dm/DMSrcSink.cpp
@@ -282,6 +282,10 @@ void premultiply_if_necessary(SkBitmap& bitmap) {
             // No need to premultiply kGray or k565 outputs.
             break;
     }
+
+    // In the kIndex_8 case, the canvas won't even try to draw unless we mark the
+    // bitmap as kPremul.
+    bitmap.setAlphaType(kPremul_SkAlphaType);
 }
 
 bool get_decode_info(SkImageInfo* decodeInfo, SkColorType canvasColorType,