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# 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
@@ -82,17 +82,17 @@ 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;
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