mozilla-bmo1504834-part3.patch
branchfirefox68
changeset 1101 a4709640638e
child 1108 33b03cfb3747
equal deleted inserted replaced
1100:e1c5065a014f 1101:a4709640638e
       
     1 # HG changeset patch
       
     2 # Parent  aecb4600e5da17443b224c79eee178c1d8e155e3
       
     3 For FF68, AntiAliasing of XULTexts seem to be broken on big endian (s390x). Text and icons of the sandwich-menu to the
       
     4 right of the address bar, as well as plugin-windows appears transparant, which usually means unreadable (white on white).
       
     5 
       
     6 diff -r aecb4600e5da -r 49f25e4c2fd1 gfx/skia/skia/include/private/SkNx.h
       
     7 --- a/gfx/skia/skia/include/private/SkNx.h	Tue Aug 20 09:46:55 2019 +0200
       
     8 +++ b/gfx/skia/skia/include/private/SkNx.h	Fri Aug 23 15:00:43 2019 +0200
       
     9 @@ -238,7 +238,14 @@
       
    10      AI SkNx operator*(const SkNx& y) const { return fVal * y.fVal; }
       
    11      AI SkNx operator/(const SkNx& y) const { return fVal / y.fVal; }
       
    12  
       
    13 -    AI SkNx operator&(const SkNx& y) const { return FromBits(ToBits(fVal) & ToBits(y.fVal)); }
       
    14 +    // On Big endian the commented out variant doesn't work,
       
    15 +    // and honestly, I have no idea why it exists in the first place.
       
    16 +    // The reason its broken is, I think, that it defaults to the double-variant of ToBits()
       
    17 +    // which gets a 64-bit integer, and FromBits returns 32-bit,
       
    18 +    // cutting off the wrong half again.
       
    19 +    // Overall, I see no reason to have ToBits and FromBits at all (even for floats/doubles).
       
    20 +    // AI SkNx operator&(const SkNx& y) const { return FromBits(ToBits(fVal) & ToBits(y.fVal)); }
       
    21 +    AI SkNx operator&(const SkNx& y) const { return fVal & y.fVal; }
       
    22      AI SkNx operator|(const SkNx& y) const { return FromBits(ToBits(fVal) | ToBits(y.fVal)); }
       
    23      AI SkNx operator^(const SkNx& y) const { return FromBits(ToBits(fVal) ^ ToBits(y.fVal)); }
       
    24  
       
    25 diff -r aecb4600e5da -r 49f25e4c2fd1 gfx/skia/skia/src/opts/SkBlitMask_opts.h
       
    26 --- a/gfx/skia/skia/src/opts/SkBlitMask_opts.h	Tue Aug 20 09:46:55 2019 +0200
       
    27 +++ b/gfx/skia/skia/src/opts/SkBlitMask_opts.h	Fri Aug 23 15:00:43 2019 +0200
       
    28 @@ -203,7 +203,9 @@
       
    29              //   ~~~>
       
    30              // a = 1*aa + d(1-1*aa) = aa + d(1-aa)
       
    31              // c = 0*aa + d(1-1*aa) =      d(1-aa)
       
    32 -            return Sk4px(Sk16b(aa) & Sk16b(0,0,0,255, 0,0,0,255, 0,0,0,255, 0,0,0,255))
       
    33 +
       
    34 +            // For big endian we have to swap the alpha-mask from 0,0,0,255 to 255,0,0,0
       
    35 +            return Sk4px(Sk16b(aa) & Sk16b(255,0,0,0, 255,0,0,0, 255,0,0,0, 255,0,0,0))
       
    36                   + d.approxMulDiv255(aa.inv());
       
    37          };
       
    38          while (h --> 0) {