GPU client side changes for GpuMemoryBuffers

webkit/gpu/webgraphicscontext3d_in_process_command_buffer_impl.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 "webkit/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h"
 
 #include <GLES2/gl2.h>
 #ifndef GL_GLEXT_PROTOTYPES
 #define GL_GLEXT_PROTOTYPES 1
 #endif
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
 
 #include <algorithm>
 #include <set>
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/memory/singleton.h"
 #include "base/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/synchronization/lock.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
 #include "gpu/command_buffer/client/gles2_lib.h"
+#include "gpu/command_buffer/client/gpu_memory_buffer_factory.h"
 #include "gpu/command_buffer/client/transfer_buffer.h"
 #include "gpu/command_buffer/common/constants.h"
 #include "gpu/command_buffer/service/command_buffer_service.h"
 #include "gpu/command_buffer/service/context_group.h"
 #include "gpu/command_buffer/service/gl_context_virtual.h"
 #include "gpu/command_buffer/service/gpu_scheduler.h"
+#include "gpu/command_buffer/service/image_manager.h"
 #include "gpu/command_buffer/service/transfer_buffer_manager.h"
 #include "ui/gl/gl_context.h"
+#include "ui/gl/gl_image.h"
 #include "ui/gl/gl_share_group.h"
 #include "ui/gl/gl_surface.h"
 #include "webkit/gpu/gl_bindings_skia_cmd_buffer.h"
 
 using gpu::Buffer;
 using gpu::CommandBuffer;
 using gpu::CommandBufferService;
+using gpu::gles2::GpuMemoryBufferFactory;
 using gpu::gles2::GLES2CmdHelper;
 using gpu::gles2::GLES2Implementation;
+using gpu::gles2::ImageManager;
+using gpu::GpuMemoryBuffer;
 using gpu::GpuScheduler;
 using gpu::TransferBuffer;
 using gpu::TransferBufferManager;
 using gpu::TransferBufferManagerInterface;
 
 namespace webkit {
 namespace gpu {
 
 class GLInProcessContext {
  public:
@@ skipping 98 matching lines @@
   bool Initialize(bool is_offscreen,
                   gfx::AcceleratedWidget window,
                   const gfx::Size& size,
                   const char* allowed_extensions,
                   const int32* attrib_list,
                   gfx::GpuPreference gpu_preference);
   void Destroy();
 
   void OnContextLost();
 
+  ::gpu::gles2::ImageManager* GetImageManager();
+
   base::Closure context_lost_callback_;
   scoped_ptr<TransferBufferManagerInterface> transfer_buffer_manager_;
   scoped_ptr<CommandBufferService> command_buffer_;
   scoped_ptr< ::gpu::GpuScheduler> gpu_scheduler_;
   scoped_ptr< ::gpu::gles2::GLES2Decoder> decoder_;
   scoped_refptr<gfx::GLContext> context_;
   scoped_refptr<gfx::GLSurface> surface_;
   scoped_ptr<GLES2CmdHelper> gles2_helper_;
   scoped_ptr<TransferBuffer> transfer_buffer_;
   scoped_ptr<GLES2Implementation> gles2_implementation_;
   scoped_ptr<WebKit::WebGraphicsContext3D::WebGraphicsSyncPointCallback>
       signal_sync_point_callback_;
   Error last_error_;
   bool share_resources_;
   bool context_lost_;
 
   DISALLOW_COPY_AND_ASSIGN(GLInProcessContext);
 };
 
 namespace {
 
 const int32 kCommandBufferSize = 1024 * 1024;
 // TODO(kbr): make the transfer buffer size configurable via context
 // creation attributes.
 const size_t kStartTransferBufferSize = 4 * 1024 * 1024;
 const size_t kMinTransferBufferSize = 1 * 256 * 1024;
 const size_t kMaxTransferBufferSize = 16 * 1024 * 1024;
 
+class GpuMemoryBufferImageManagerFactory : public GpuMemoryBufferFactory {
+ public:
+  explicit GpuMemoryBufferImageManagerFactory(ImageManager* image_manager);
+  virtual ~GpuMemoryBufferImageManagerFactory();
+
+  // methods from GpuMemoryBufferFactory
+  virtual scoped_ptr<GpuMemoryBuffer> CreateGpuMemoryBuffer(
+      int width, int height, unsigned int* image_id) OVERRIDE;
+ private:
+  scoped_refptr<ImageManager> image_manager_;
+  unsigned int next_id_;
+
+  DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferImageManagerFactory);
+};
+
+GpuMemoryBufferImageManagerFactory::GpuMemoryBufferImageManagerFactory(
+    ImageManager* image_manager) : image_manager_(image_manager),
+                                   next_id_(0) {
+}
+
+GpuMemoryBufferImageManagerFactory::~GpuMemoryBufferImageManagerFactory() {
+}
+
+scoped_ptr<GpuMemoryBuffer> GpuMemoryBufferImageManagerFactory::
+    CreateGpuMemoryBuffer(int width, int height, unsigned int* image_id) {
+  scoped_ptr<GpuMemoryBuffer> buffer =
+      ::gpu::gles2::GetProcessDefaultGpuMemoryBufferFactory().Run(
+          width, height);

[reveman, 2013/05/08 04:23:06]

The factory being a callback is awkward.

[kaanb, 2013/05/09 05:13:13]

Acknowledged.

+  scoped_refptr<gfx::GLImage> gl_image =
+      gfx::GLImage::CreateGLImageForGpuMemoryBuffer(buffer->GetNativeBuffer(),
+                                                    gfx::Size(width, height));
+  *image_id = ++next_id_;  // Valid image_ids start from 1.
+  image_manager_->AddImage(gl_image, *image_id);
+  return buffer.Pass();
+}
+
 // Singleton used to initialize and terminate the gles2 library.
 class GLES2Initializer {
  public:
   GLES2Initializer() {
     gles2::Initialize();
   }
 
   ~GLES2Initializer() {
     gles2::Terminate();
   }
@@ skipping 207 matching lines @@
 
 // TODO(gman): Remove This
 void GLInProcessContext::DisableShaderTranslation() {
   NOTREACHED();
 }
 
 GLES2Implementation* GLInProcessContext::GetImplementation() {
   return gles2_implementation_.get();
 }
 
+::gpu::gles2::ImageManager* GLInProcessContext::GetImageManager() {
+  return decoder_->GetContextGroup()->image_manager();
+}
+
 GLInProcessContext::GLInProcessContext(bool share_resources)
     : last_error_(SUCCESS),
       share_resources_(share_resources),
       context_lost_(false) {
 }
 
 bool GLInProcessContext::Initialize(
     bool is_offscreen,
     gfx::AcceleratedWidget window,
     const gfx::Size& size,
@@ skipping 164 matching lines @@
   transfer_buffer_.reset(new TransferBuffer(gles2_helper_.get()));
 
   // Create the object exposing the OpenGL API.
   gles2_implementation_.reset(new GLES2Implementation(
       gles2_helper_.get(),
       context_group ? context_group->GetImplementation()->share_group() : NULL,
       transfer_buffer_.get(),
       true,
       false));
 
+  // GLES2Implementation::Initialize() which is called next
+  // needs the GpuMemoryBufferFactory so we set it before
+  // Initialize is called.
+  scoped_ptr<GpuMemoryBufferFactory> gpu_memory_buffer_factory(
+      new GpuMemoryBufferImageManagerFactory(GetImageManager()));
+  // GLES2Implementation takes the ownership of |gpu_memory_buffer_factory|.
+  gles2_implementation_->SetGpuMemoryBufferFactory(
+      gpu_memory_buffer_factory.Pass());
+
   if (!gles2_implementation_->Initialize(
       kStartTransferBufferSize,
       kMinTransferBufferSize,
       kMaxTransferBufferSize)) {
     return false;
   }
 
   if (share_resources_) {
     AutoLockAndDecoderDetachThread lock(g_decoder_lock.Get(),
                                         g_all_shared_contexts.Get());
@@ skipping 1208 matching lines @@
 }
 
 void WebGraphicsContext3DInProcessCommandBufferImpl::OnContextLost() {
   // TODO(kbr): improve the precision here.
   context_lost_reason_ = GL_UNKNOWN_CONTEXT_RESET_ARB;
   if (context_lost_callback_) {
     context_lost_callback_->onContextLost();
   }
 }
 
+DELEGATE_TO_GL_2R(createImageCHROMIUM, CreateImageCHROMIUM,
+                  WGC3Dsizei, WGC3Dsizei, WGC3Duint);
+
+DELEGATE_TO_GL_1(destroyImageCHROMIUM, DestroyImageCHROMIUM, WGC3Duint);
+
+DELEGATE_TO_GL_3(getImageParameterivCHROMIUM, GetImageParameterivCHROMIUM,
+                 WGC3Duint, WGC3Denum, GLint*);
+
+DELEGATE_TO_GL_2R(mapImageCHROMIUM, MapImageCHROMIUM,
+                  WGC3Duint, WGC3Denum, void*);
+
+DELEGATE_TO_GL_1R(unmapImageCHROMIUM, UnmapImageCHROMIUM,
+                  WGC3Duint, WGC3Dboolean);
+
 DELEGATE_TO_GL_3(bindUniformLocationCHROMIUM, BindUniformLocationCHROMIUM,
                  WebGLId, WGC3Dint, const WGC3Dchar*)
 
 DELEGATE_TO_GL(shallowFlushCHROMIUM, ShallowFlushCHROMIUM)
 
 DELEGATE_TO_GL_1(genMailboxCHROMIUM, GenMailboxCHROMIUM, WGC3Dbyte*)
 DELEGATE_TO_GL_2(produceTextureCHROMIUM, ProduceTextureCHROMIUM,
                  WGC3Denum, const WGC3Dbyte*)
 DELEGATE_TO_GL_2(consumeTextureCHROMIUM, ConsumeTextureCHROMIUM,
                  WGC3Denum, const WGC3Dbyte*)
@@ skipping 26 matching lines @@
 
 DELEGATE_TO_GL_9(asyncTexSubImage2DCHROMIUM, AsyncTexSubImage2DCHROMIUM,
     WGC3Denum, WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dsizei, WGC3Dsizei,
     WGC3Denum, WGC3Denum, const void*)
 
 DELEGATE_TO_GL_1(waitAsyncTexImage2DCHROMIUM, WaitAsyncTexImage2DCHROMIUM,
     WGC3Denum)
 
 }  // namespace gpu
 }  // namespace webkit