Make GrTextureStripAtlas flush pending IO on newly acquired texture

src/gpu/effects/GrTextureStripAtlas.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrTextureStripAtlas.h"
 #include "GrContext.h"
 #include "GrTexture.h"
@@ skipping 191 matching lines @@
     builder[0] = static_cast<uint32_t>(fCacheKey);
     builder.finish();
 
     fTexture = fDesc.fContext->textureProvider()->findAndRefTextureByUniqueKey(key);
     if (nullptr == fTexture) {
         fTexture = fDesc.fContext->textureProvider()->createTexture(texDesc, SkBudgeted::kYes,
                                                                     nullptr, 0);
         if (!fTexture) {
             return;
         }
+
+        fDesc.fContext->flushSurfaceIO(fTexture);

[bsalomon, 2016/08/22 16:52:57]

Could you add a comment here that we need to do this because we will be issuing
writes to the surface using kDontFlush_PixelOpsFlag?

[ajuma, 2016/08/24 13:12:39]

Done.

         fDesc.fContext->textureProvider()->assignUniqueKeyToTexture(key, fTexture);
         // This is a new texture, so all of our cache info is now invalid
         this->initLRU();
         fKeyTable.rewind();
     }
     SkASSERT(fTexture);
 }
 
 void GrTextureStripAtlas::unlockTexture() {
     SkASSERT(fTexture && 0 == fLockedRows);
@@ skipping 121 matching lines @@
 
     // If we have locked rows, we should have a locked texture, otherwise
     // it should be unlocked
     if (fLockedRows == 0) {
         SkASSERT(nullptr == fTexture);
     } else {
         SkASSERT(fTexture);
     }
 }
 #endif