Don't flush on read/write pixels unless necessary

src/gpu/GrInOrderDrawBuffer.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrInOrderDrawBuffer.h"
 
 #include "GrBufferAllocPool.h"
@@ skipping 815 matching lines @@
     }
     if (kReserved_GeometrySrcType == restoredState.fIndexSrc ||
         kArray_GeometrySrcType == restoredState.fIndexSrc) {
         poolState.fUsedPoolIndexBytes = sizeof(uint16_t) *
                                          restoredState.fIndexCount;
     }
 }
 
 void GrInOrderDrawBuffer::recordStateIfNecessary() {
     if (fStates.empty()) {
-        fStates.push_back() = this->getDrawState();
+        this->convertDrawStateToPendingExec(&fStates.push_back(this->getDrawState()));
         this->addToCmdBuffer(kSetState_Cmd);
         return;
     }
     const GrDrawState& curr = this->getDrawState();
     GrDrawState& prev = fStates.back();
     switch (GrDrawState::CombineIfPossible(prev, curr, *this->caps())) {
         case GrDrawState::kIncompatible_CombinedState:
             this->convertDrawStateToPendingExec(&fStates.push_back(curr));
             this->addToCmdBuffer(kSetState_Cmd);
             break;
@@ skipping 71 matching lines @@
                                                                          GrSurface* src) {
     this->addToCmdBuffer(kCopySurface_Cmd);
     return GrNEW_APPEND_TO_ALLOCATOR(&fCopySurfaces, CopySurface, (dst, src));
 }
 
 void GrInOrderDrawBuffer::clipWillBeSet(const GrClipData* newClipData) {
     INHERITED::clipWillBeSet(newClipData);
     fClipSet = true;
     fClipProxyState = kUnknown_ClipProxyState;
 }