Add a parameter GR_ALWAYS_ALLOCATE_ON_HEAP to allow for only ever creating temporary buffers on the…

src/gpu/gl/GrGpuGL.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 "GrGpuGL.h"
 #include "GrGLStencilBuffer.h"
@@ skipping 560 matching lines @@
     SkASSERT(!GrPixelConfigIsCompressed(dataConfig));
 
     size_t bpp = GrBytesPerPixel(dataConfig);
     if (!adjust_pixel_ops_params(desc.fWidth, desc.fHeight, bpp, &left, &top,
                                  &width, &height, &data, &rowBytes)) {
         return false;
     }
     size_t trimRowBytes = width * bpp;
 
     // in case we need a temporary, trimmed copy of the src pixels
+#if GR_ALWAYS_ALLOCATE_ON_HEAP
+    SkAutoMalloc tempStorage;
+#else
     SkAutoSMalloc<128 * 128> tempStorage;
+#endif
 
     // We currently lazily create MIPMAPs when the we see a draw with
     // GrTextureParams::kMipMap_FilterMode. Using texture storage requires that the
     // MIP levels are all created when the texture is created. So for now we don't use
     // texture storage.
     bool useTexStorage = false &&
                          isNewTexture &&
                          this->glCaps().texStorageSupport();
 
     if (useTexStorage && kGL_GrGLStandard == this->glStandard()) {
@@ skipping 1067 matching lines @@
 
     size_t tightRowBytes = bpp * width;
     if (0 == rowBytes) {
         rowBytes = tightRowBytes;
     }
     size_t readDstRowBytes = tightRowBytes;
     void* readDst = buffer;
 
     // determine if GL can read using the passed rowBytes or if we need
     // a scratch buffer.
+
+#if GR_ALWAYS_ALLOCATE_ON_HEAP
+    SkAutoMalloc scratch;
+#else
     SkAutoSMalloc<32 * sizeof(GrColor)> scratch;
+#endif
+
     if (rowBytes != tightRowBytes) {
         if (this->glCaps().packRowLengthSupport()) {
             SkASSERT(!(rowBytes % sizeof(GrColor)));
             GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH,
                                 static_cast<GrGLint>(rowBytes / sizeof(GrColor))));
             readDstRowBytes = rowBytes;
         } else {
             scratch.reset(tightRowBytes * height);
             readDst = scratch.get();
         }
@@ skipping 1263 matching lines @@
             this->setVertexArrayID(gpu, 0);
         }
         int attrCount = gpu->glCaps().maxVertexAttributes();
         if (fDefaultVertexArrayAttribState.count() != attrCount) {
             fDefaultVertexArrayAttribState.resize(attrCount);
         }
         attribState = &fDefaultVertexArrayAttribState;
     }
     return attribState;
 }