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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Martin Sirringhaus <msirringhaus@suse.de>
Date: Mon, 25 Nov 2019 09:31:46 +0200
Subject: [PATCH] Bug 1504834 - XULText-AA-fix BE
For FF68, AntiAliasing of XULTexts seem to be broken on big endian (s390x). Text and icons of the sandwich-menu to the
right of the address bar, as well as plugin-windows appears transparant, which usually means unreadable (white on white).
https://bugzilla.mozilla.org/show_bug.cgi?id=1504834#c9
---
gfx/skia/skia/src/opts/SkBlitMask_opts.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/gfx/skia/skia/src/opts/SkBlitMask_opts.h b/gfx/skia/skia/src/opts/SkBlitMask_opts.h
index 43dd5e20734534ef73e46b2f1a40168ee682dec6..51e74d1b691c65f97d2cec38c3c9276c9f50823b 100644
--- a/gfx/skia/skia/src/opts/SkBlitMask_opts.h
+++ b/gfx/skia/skia/src/opts/SkBlitMask_opts.h
@@ -386,6 +386,8 @@ namespace SK_OPTS_NS {
// ~~~>
// a = 1*aa + d(1-1*aa) = aa + d(1-aa)
// c = 0*aa + d(1-1*aa) = d(1-aa)
+ // TODO: Check this for endian-issues!
+ // Do we need to switch 255 to the front for all of those tuples?
return (aa & Sk4px(skvx::byte16{0,0,0,255, 0,0,0,255, 0,0,0,255, 0,0,0,255}))
+ d.approxMulDiv255(aa.inv());
};
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