Tune helper context buffer sizes

content/browser/renderer_host/image_transport_factory_android.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/renderer_host/image_transport_factory_android.h"
 
 #include "base/memory/singleton.h"
 #include "base/strings/stringprintf.h"
 #include "content/browser/gpu/browser_gpu_channel_host_factory.h"
 #include "content/browser/renderer_host/compositor_impl_android.h"
 #include "content/common/gpu/client/gl_helper.h"
 #include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
 #include "content/common/gpu/gpu_process_launch_causes.h"
 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
 #include "third_party/khronos/GLES2/gl2.h"
+#include "ui/gfx/android/device_display_info.h"
 #include "webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h"
 
 namespace content {
 
 namespace {
 
 using webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl;
 
 static ImageTransportFactoryAndroid* g_factory = NULL;
 
@@ skipping 67 matching lines @@
 CmdBufferImageTransportFactory::CmdBufferImageTransportFactory() {
   WebKit::WebGraphicsContext3D::Attributes attrs;
   attrs.shareResources = true;
   GpuChannelHostFactory* factory = BrowserGpuChannelHostFactory::instance();
   GURL url("chrome://gpu/ImageTransportFactoryAndroid");
   base::WeakPtr<WebGraphicsContext3DSwapBuffersClient> swap_client;
   context_.reset(new WebGraphicsContext3DCommandBufferImpl(0, // offscreen
                                                            url,
                                                            factory,
                                                            swap_client));
-  context_->InitializeWithDefaultBufferSizes(
+  static const size_t kBytesPerPixel = 4;
+  gfx::DeviceDisplayInfo display_info;
+  size_t full_screen_texture_size_in_bytes =
+      display_info.GetDisplayHeight() *
+      display_info.GetDisplayWidth() *
+      kBytesPerPixel;
+  context_->Initialize(
       attrs,
       false,
-      CAUSE_FOR_GPU_LAUNCH_WEBGRAPHICSCONTEXT3DCOMMANDBUFFERIMPL_INITIALIZE);
+      CAUSE_FOR_GPU_LAUNCH_WEBGRAPHICSCONTEXT3DCOMMANDBUFFERIMPL_INITIALIZE,
+      64 * 1024,  // command buffer size
+      std::min(full_screen_texture_size_in_bytes,
+               kDefaultStartTransferBufferSize),
+      kDefaultMinTransferBufferSize,
+      std::min(3 * full_screen_texture_size_in_bytes,
+               kDefaultMaxTransferBufferSize));
 
   if (context_->makeContextCurrent())
     context_->pushGroupMarkerEXT(
         base::StringPrintf("CmdBufferImageTransportFactory-%p", this).c_str());
 }
 
 CmdBufferImageTransportFactory::~CmdBufferImageTransportFactory() {
 }
 
 uint32_t CmdBufferImageTransportFactory::InsertSyncPoint() {
@@ skipping 70 matching lines @@
   return g_factory;
 }
 
 ImageTransportFactoryAndroid::ImageTransportFactoryAndroid() {
 }
 
 ImageTransportFactoryAndroid::~ImageTransportFactoryAndroid() {
 }
 
 } // namespace content