First pass at font cache refactor: Create an atlas manager per texture

src/gpu/GrAtlas.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 46 matching lines @@
     GrIPoint16              fPlot;
     GrMaskFormat            fMaskFormat;
 
     friend class GrAtlasMgr;
 };
 
 class GrPlotMgr;
 
 class GrAtlasMgr {
 public:
-    GrAtlasMgr(GrGpu*);
+    GrAtlasMgr(GrGpu*, GrMaskFormat);
     ~GrAtlasMgr();
 
-    GrAtlas* addToAtlas(GrAtlas**, int width, int height, const void*,
-                        GrMaskFormat, GrIPoint16*);
+    GrAtlas* addToAtlas(GrAtlas**, int width, int height, const void*, GrIPoint16*);
     void deleteAtlas(GrAtlas* atlas) { delete atlas; }
 
-    GrTexture* getTexture(GrMaskFormat format) const {
-        SkASSERT((unsigned)format < kCount_GrMaskFormats);
-        return fTexture[format];
+    GrTexture* getTexture() const {
+        return fTexture;
     }
 
     // to be called by ~GrAtlas()
-    void freePlot(GrMaskFormat format, int x, int y);
+    void freePlot(int x, int y);
 
 private:
-    GrGpu*      fGpu;
-    GrTexture*  fTexture[kCount_GrMaskFormats];
-    GrPlotMgr*  fPlotMgr[kCount_GrMaskFormats];
+    GrGpu*       fGpu;
+    GrMaskFormat fMaskFormat;
+    GrTexture*   fTexture;
+    GrPlotMgr*   fPlotMgr;
 };
 
 #endif