Brian Osman 443c5e4c5b
Disable linear blending on iOS simulator (#4413)
Fixes flutter/flutter#13308

Overlooked this case when I previously removed linear blending. MakeS32 creates a surface with a color space attached (triggering the linear blending behavior). MakeN32 creates a legacy surface (no color space), which matches what the other backend bindings do (including the GL surface factory, and the raster cache).
2017-12-05 08:38:53 -05:00
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