Don't try to add large glyphs to the font atlas.

src/gpu/GrTextStrike.h

 
 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 
@@ skipping 19 matching lines @@
 public:
     GrTextStrike(GrFontCache*, const GrFontDescKey* fontScalerKey, GrMaskFormat, GrAtlas*);
     ~GrTextStrike();
 
     const GrFontDescKey* getFontScalerKey() const { return fFontScalerKey; }
     GrFontCache* getFontCache() const { return fFontCache; }
     GrMaskFormat getMaskFormat() const { return fMaskFormat; }
     GrTexture*   getTexture() const { return fAtlas->getTexture(); }
 
     inline GrGlyph* getGlyph(GrGlyph::PackedID, GrFontScaler*);
+    // returns true if glyph (or glyph+padding for distance field)
+    // is too large to ever fit in texture atlas subregions (GrPlots)
+    bool glyphTooLargeForAtlas(GrGlyph*);
+    // returns true if glyph successfully added to texture atlas, false otherwise
     bool addGlyphToAtlas(GrGlyph*, GrFontScaler*);
 
     // testing
     int countGlyphs() const { return fCache.count(); }
 
     // remove any references to this plot
     void removePlot(const GrPlot* plot);
 
     static const GrFontDescKey& GetKey(const GrTextStrike& ts) {
         return *(ts.fFontScalerKey);
@@ skipping 75 matching lines @@
 
     GrGpu*      fGpu;
     GrAtlas*    fAtlases[kAtlasCount];
 
     GrTextStrike* generateStrike(GrFontScaler*);
     inline void detachStrikeFromList(GrTextStrike*);
     void purgeStrike(GrTextStrike* strike);
 };
 
 #endif