Calling OpenGL from the renderer process

- Added ability for renderer processes to render to a real window (Windows only so far).
- Added ability to create offscreen frame buffer objects that can be resized later.
- OpenGL context can have a "parent" context that can access its last swapped back buffer through a texture ID.
- Moved code to establish GPU channel from RenderWidget to RenderThread.
- Changed way service size command buffer object lifetimes are managed.
TEST=trybot and visual verification that OpenGL can clear the browser window to magenta.
BUG=none

Review URL: http://codereview.chromium.org/1136006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@42679 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 15 insertions, 11 deletions

diff --git a/gpu/command_buffer/client/cmd_buffer_helper_test.cc b/gpu/command_buffer/client/cmd_buffer_helper_test.cc
index ffb8137..d754f5b 100644
--- a/gpu/command_buffer/client/cmd_buffer_helper_test.cc
+++ b/gpu/command_buffer/client/cmd_buffer_helper_test.cc
@@ -51,12 +51,12 @@ class CommandBufferHelperTest : public testing::Test {
                                 0,
                                 api_mock_.get());
 
-    scoped_refptr<GPUProcessor> gpu_processor(new GPUProcessor(
+    gpu_processor_.reset(new GPUProcessor(
         command_buffer_.get(), NULL, parser_, 1));
     command_buffer_->SetPutOffsetChangeCallback(NewCallback(
-        gpu_processor.get(), &GPUProcessor::ProcessCommands));
+        gpu_processor_.get(), &GPUProcessor::ProcessCommands));
 
-    api_mock_->set_engine(gpu_processor.get());
+    api_mock_->set_engine(gpu_processor_.get());
 
     helper_.reset(new CommandBufferHelper(command_buffer_.get()));
     helper_->Initialize();
@@ -132,6 +132,7 @@ class CommandBufferHelperTest : public testing::Test {
   MessageLoop message_loop_;
   scoped_ptr<AsyncAPIMock> api_mock_;
   scoped_ptr<CommandBufferService> command_buffer_;
+  scoped_ptr<GPUProcessor> gpu_processor_;
   CommandParser* parser_;
   scoped_ptr<CommandBufferHelper> helper_;
   Sequence sequence_;
diff --git a/gpu/command_buffer/client/fenced_allocator_test.cc b/gpu/command_buffer/client/fenced_allocator_test.cc
index c47f355..8dc1b780 100644
--- a/gpu/command_buffer/client/fenced_allocator_test.cc
+++ b/gpu/command_buffer/client/fenced_allocator_test.cc
@@ -52,12 +52,12 @@ class BaseFencedAllocatorTest : public testing::Test {
                                 0,
                                 api_mock_.get());
 
-    scoped_refptr<GPUProcessor> gpu_processor(new GPUProcessor(
+    gpu_processor_.reset(new GPUProcessor(
         command_buffer_.get(), NULL, parser_, INT_MAX));
     command_buffer_->SetPutOffsetChangeCallback(NewCallback(
-        gpu_processor.get(), &GPUProcessor::ProcessCommands));
+        gpu_processor_.get(), &GPUProcessor::ProcessCommands));
 
-    api_mock_->set_engine(gpu_processor.get());
+    api_mock_->set_engine(gpu_processor_.get());
 
     helper_.reset(new CommandBufferHelper(command_buffer_.get()));
     helper_->Initialize();
@@ -76,6 +76,7 @@ class BaseFencedAllocatorTest : public testing::Test {
   MessageLoop message_loop_;
   scoped_ptr<AsyncAPIMock> api_mock_;
   scoped_ptr<CommandBufferService> command_buffer_;
+  scoped_ptr<GPUProcessor> gpu_processor_;
   CommandParser* parser_;
   scoped_ptr<CommandBufferHelper> helper_;
 };
diff --git a/gpu/command_buffer/client/gles2_demo.cc b/gpu/command_buffer/client/gles2_demo.cc
index 41c42b1..6035042 100644
--- a/gpu/command_buffer/client/gles2_demo.cc
+++ b/gpu/command_buffer/client/gles2_demo.cc
@@ -54,14 +54,16 @@ bool GLES2Demo::Setup(void* hwnd, int32 size) {
   if (!command_buffer->Initialize(size))
     return NULL;
 
-  scoped_refptr<GPUProcessor> gpu_processor(
-      new GPUProcessor(command_buffer.get()));
-  if (!gpu_processor->Initialize(reinterpret_cast<HWND>(hwnd))) {
+  GPUProcessor* gpu_processor = new GPUProcessor(command_buffer.get());
+  if (!gpu_processor->Initialize(reinterpret_cast<HWND>(hwnd),
+                                 NULL,
+                                 gfx::Size(),
+                                 0)) {
     return NULL;
   }
 
   command_buffer->SetPutOffsetChangeCallback(
-      NewCallback(gpu_processor.get(), &GPUProcessor::ProcessCommands));
+      NewCallback(gpu_processor, &GPUProcessor::ProcessCommands));
 
   GLES2CmdHelper* helper = new GLES2CmdHelper(command_buffer.get());
   if (!helper->Initialize()) {
diff --git a/gpu/command_buffer/client/gles2_implementation.h b/gpu/command_buffer/client/gles2_implementation.h
index c1ee9c6..fd98686 100644
--- a/gpu/command_buffer/client/gles2_implementation.h
+++ b/gpu/command_buffer/client/gles2_implementation.h
@@ -43,13 +43,13 @@ class GLES2Implementation {
   // this file instead of having to edit some template or the code generator.
   #include "../client/gles2_implementation_autogen.h"
 
- private:
   // Makes a set of Ids for glGen___ functions.
   void MakeIds(GLsizei n, GLuint* ids);
 
   // Frees a set of Ids for glDelete___ functions.
   void FreeIds(GLsizei n, const GLuint* ids);
 
+ private:
   // Gets the shared memory id for the result buffer.
   uint32 result_shm_id() const {
     return transfer_buffer_id_;