Commit 34e77a30 authored by Jonathan Kew's avatar Jonathan Kew
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bug 626299 patch 2 - don't use subpixel-AA mode with DWrite fonts when bitmaps... 

bug 626299 patch 2 - don't use subpixel-AA mode with DWrite fonts when bitmaps are present. r=jdaggett a=blocking
parent cfa25ee4

gfx/thebes/gfxDWriteFonts.cpp

+6 −0
Original line number Diff line number Diff line
@@ -228,6 +228,12 @@ gfxDWriteFont::ComputeMetrics() 
    if (HasBitmapStrikeForSize(NS_lround(mAdjustedSize))) {

        mAdjustedSize = NS_lround(mAdjustedSize);

        mUseSubpixelPositions = PR_FALSE;

        // if we have bitmaps, we need to tell Cairo NOT to use subpixel AA,

        // to avoid the manual-subpixel codepath in cairo-d2d-surface.cpp

        // which fails to render bitmap glyphs (see bug 626299)

        if (mAntialiasOption == kAntialiasDefault && UsingClearType()) {

            mAntialiasOption = kAntialiasGrayscale;

        }

    }



    mMetrics = new gfxFont::Metrics;