Allow max tile size to be overridden separately from max texture size.

include/gpu/GrCaps.h

 
 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef GrCaps_DEFINED
 #define GrCaps_DEFINED
 
@@ skipping 171 matching lines @@
 
     // Scratch textures not being reused means that those scratch textures
     // that we upload to (i.e., don't have a render target) will not be
     // recycled in the texture cache. This is to prevent ghosting by drivers
     // (in particular for deferred architectures).
     bool reuseScratchTextures() const { return fReuseScratchTextures; }
     bool reuseScratchBuffers() const { return fReuseScratchBuffers; }
 
     int maxRenderTargetSize() const { return fMaxRenderTargetSize; }
     int maxTextureSize() const { return fMaxTextureSize; }
+    /** This is the maximum tile size to use by GPU devices for rendering sw-backed images/bitmaps.
+        It is usually the max texture size, unless we're overriding it for testing. */
+    int maxTileSize() const { SkASSERT(fMaxTileSize <= fMaxTextureSize); return fMaxTileSize; }
 
     // Will be 0 if MSAA is not supported
     int maxSampleCount() const { return fMaxSampleCount; }
 
     bool isConfigRenderable(GrPixelConfig config, bool withMSAA) const {
         SkASSERT(kGrPixelConfigCnt > config);
         return fConfigRenderSupport[config][withMSAA];
     }
 
     bool isConfigTexturable(GrPixelConfig config) const {
@@ skipping 54 matching lines @@
 
     BlendEquationSupport fBlendEquationSupport;
     uint32_t fAdvBlendEqBlacklist;
     GR_STATIC_ASSERT(kLast_GrBlendEquation < 32);
 
     uint32_t fMapBufferFlags;
     int fGeometryBufferMapThreshold;
 
     int fMaxRenderTargetSize;
     int fMaxTextureSize;
+    int fMaxTileSize;
     int fMaxSampleCount;
 
     // The first entry for each config is without msaa and the second is with.
     bool fConfigRenderSupport[kGrPixelConfigCnt][2];
     bool fConfigTextureSupport[kGrPixelConfigCnt];
 
 private:
     bool fSupressPrints : 1;
     bool fDrawPathMasksToCompressedTextureSupport : 1;
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif