# HG changeset patch
# User Lee Salzman <lsalzman@mozilla.com>
# Date 1540234148 14400
# Node ID f0f7573deea111d97bc96aa6b33e2518ee89da3a
# Parent  2ce8f6d1a64ef8ee845c595bc441234af72422fe
Bug 1500709 - fix big-endian RGBBitShift in Swizzle. r=me
CLOSED TREE

diff --git a/gfx/2d/Swizzle.cpp b/gfx/2d/Swizzle.cpp
--- a/gfx/2d/Swizzle.cpp
+++ b/gfx/2d/Swizzle.cpp
@@ -75,13 +75,13 @@ AlphaByteIndex(SurfaceFormat aFormat)
 
 // The endian-dependent bit shift to access RGB of a UINT32 pixel.
 static constexpr uint32_t RGBBitShift(SurfaceFormat aFormat) {
 #if MOZ_LITTLE_ENDIAN
   return 8 * RGBByteIndex(aFormat);
 #else
-  return 24 - 8 * RGBByteIndex(aFormat);
+  return 8 - 8 * RGBByteIndex(aFormat);
 #endif
 }
 
 // The endian-dependent bit shift to access alpha of a UINT32 pixel.
 static constexpr uint32_t AlphaBitShift(SurfaceFormat aFormat) {
   return (RGBBitShift(aFormat) + 24) % 32;