Rewrite GrTextureMaker to disentangle bitmap case from base class and give GPU object a say in what…

src/gpu/GrGpu.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGpu_DEFINED
 #define GrGpu_DEFINED
 
 #include "GrPipelineBuilder.h"
 #include "GrProgramDesc.h"
 #include "GrStencil.h"
+#include "GrTextureParamsAdjuster.h"
 #include "GrXferProcessor.h"
 #include "SkPath.h"
 
 class GrBatchTracker;
 class GrContext;
 class GrGLContext;
 class GrIndexBuffer;
 class GrNonInstancedVertices;
 class GrPath;
 class GrPathRange;
@@ skipping 347 matching lines @@
 
     // width and height may be larger than rt (if underlying API allows it).
     // Returns nullptr if compatible sb could not be created, otherwise the caller owns the ref on
     // the GrStencilAttachment.
     virtual GrStencilAttachment* createStencilAttachmentForRenderTarget(const GrRenderTarget*,
                                                                         int width,
                                                                         int height) = 0;
     // clears target's entire stencil buffer to 0
     virtual void clearStencil(GrRenderTarget* target) = 0;
 
+
+    // Determines whether a copy of a texture must be made in order to be compatible with
+    // a given GrTextureParams. If so, the width, height and filter used for the copy are
+    // output via the CopyParams.
+    bool makeCopyForTextureParams(int width, int height, const GrTextureParams&,
+                                 GrTextureParamsAdjuster::CopyParams*) const;
+
     // This is only to be used in GL-specific tests.
     virtual const GrGLContext* glContextForTesting() const { return nullptr; }
 
 protected:
     // Functions used to map clip-respecting stencil tests into normal
     // stencil funcs supported by GPUs.
     static GrStencilFunc ConvertStencilFunc(bool stencilInClip,
                                             GrStencilFunc func);
     static void ConvertStencilFuncAndMask(GrStencilFunc func,
                                           bool clipInStencil,
@@ skipping 96 matching lines @@
     ResetTimestamp                                                      fResetTimestamp;
     uint32_t                                                            fResetBits;
     // The context owns us, not vice-versa, so this ptr is not ref'ed by Gpu.
     GrContext*                                                          fContext;
 
     friend class GrPathRendering;
     typedef SkRefCnt INHERITED;
 };
 
 #endif