GPU Font Cache improvements:

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 28 matching lines @@
     inline GrGlyph* getGlyph(GrGlyph::PackedID, GrFontScaler*);
     bool getGlyphAtlas(GrGlyph*, GrFontScaler*);
 
     // testing
     int countGlyphs() const { return fCache.getArray().count(); }
     const GrGlyph* glyphAt(int index) const {
         return fCache.getArray()[index];
     }
     GrAtlas* getAtlas() const { return fAtlas; }
 
+    // returns true if an atlas was removed
+    bool removeUnusedAtlas();
+
+    void markAtlasesUnused();
+
 public:
     // for LRU
     GrTextStrike*   fPrev;
     GrTextStrike*   fNext;
 
 private:
     class Key;
     GrTHashTable<GrGlyph, Key, 7> fCache;
     const GrKey* fFontScalerKey;
     GrTAllocPool<GrGlyph> fPool;
@@ skipping 15 matching lines @@
 public:
     GrFontCache(GrGpu*);
     ~GrFontCache();
 
     inline GrTextStrike* getStrike(GrFontScaler*);
 
     void freeAll();
 
     void purgeExceptFor(GrTextStrike*);
 
+    // remove an unused atlas and its strike (if necessary)
+    void freeAtlasExceptFor(GrTextStrike*);
+
     // testing
     int countStrikes() const { return fCache.getArray().count(); }
     const GrTextStrike* strikeAt(int index) const {
         return fCache.getArray()[index];
     }
     GrTextStrike* getHeadStrike() const { return fHead; }
 
 #if GR_DEBUG
     void validate() const;
 #else
@@ skipping 11 matching lines @@
 
     GrGpu*      fGpu;
     GrAtlasMgr* fAtlasMgr;
 
 
     GrTextStrike* generateStrike(GrFontScaler*, const Key&);
     inline void detachStrikeFromList(GrTextStrike*);
 };
 
 #endif