Use unorm shorts for texture coordinates when rendering text.

src/gpu/GrBatchAtlas.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrBatchAtlas_DEFINED
 #define GrBatchAtlas_DEFINED
 
 #include "GrTexture.h"
 #include "SkPoint.h"
 #include "SkTDArray.h"
 #include "SkTInternalLList.h"
 
 #include "batches/GrDrawBatch.h"
 
 class GrRectanizer;
 
 struct GrBatchAtlasConfig {
     int numPlotsX() const { return fWidth / fPlotWidth; }
     int numPlotsY() const { return fHeight / fPlotWidth; }
+    int log2Width() const { return SkNextLog2(fWidth); }
+    int log2Height() const { return SkNextLog2(fHeight); }

[joshualitt, 2016/02/18 20:12:11]

is it worth caching these?

[jvanverth1, 2016/02/18 20:21:20]

Yes, that makes sense.

     int fWidth;
     int fHeight;
     int fPlotWidth;
     int fPlotHeight;
 };
 
 class GrBatchAtlas {
 public:
     // An AtlasID is an opaque handle which callers can use to determine if the atlas contains
     // a specific piece of data
@@ skipping 224 matching lines @@
     };
 
     SkTDArray<EvictionData> fEvictionCallbacks;
     // allocated array of GrBatchPlots
     SkAutoTUnref<BatchPlot>* fPlotArray;
     // LRU list of GrPlots (MRU at head - LRU at tail)
     GrBatchPlotList fPlotList;
 };
 
 #endif