Avoid regenerating cached textblobs on integer scrolls

src/gpu/GrDrawTarget.cpp

 
 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrDrawTarget.h"
 
@@ skipping 76 matching lines @@
     SkASSERT(fStartIndex >= 0);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 
 #define DEBUG_INVAL_BUFFER 0xdeadcafe
 #define DEBUG_INVAL_START_IDX -1
 
 GrDrawTarget::GrDrawTarget(GrContext* context)
     : fContext(context)
-    , fGpuTraceMarkerCount(0)
-    , fPool(2 << 16, 2 << 16) {
+    , fGpuTraceMarkerCount(0) {
     SkASSERT(context);
     GeometrySrcState& geoSrc = fGeoSrcStateStack.push_back();
 #ifdef SK_DEBUG
     geoSrc.fVertexCount = DEBUG_INVAL_START_IDX;
     geoSrc.fVertexBuffer = (GrVertexBuffer*)DEBUG_INVAL_BUFFER;
     geoSrc.fIndexCount = DEBUG_INVAL_START_IDX;
     geoSrc.fIndexBuffer = (GrIndexBuffer*)DEBUG_INVAL_BUFFER;
 #endif
     geoSrc.fVertexSrc = kNone_GeometrySrcType;
     geoSrc.fIndexSrc  = kNone_GeometrySrcType;
@@ skipping 1152 matching lines @@
                              GrPipelineBuilder::AutoRestoreFragmentProcessors* arfp,
                              GrPipelineBuilder::AutoRestoreStencil* ars,
                              GrScissorState* scissorState,
                              const SkRect* devBounds) {
     return fClipMaskManager.setupClipping(pipelineBuilder,
                                           arfp,
                                           ars,
                                           scissorState,
                                           devBounds);
 }