Implement TextureImageTransportSurface using texture mailbox

content/browser/renderer_host/image_transport_factory.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.h"
 
 #include <algorithm>
 #include <map>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "content/browser/gpu/browser_gpu_channel_host_factory.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
 #include "content/browser/gpu/gpu_surface_tracker.h"
 #include "content/common/gpu/client/gl_helper.h"
 #include "content/common/gpu/client/gpu_channel_host.h"
 #include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
 #include "content/common/gpu/gpu_process_launch_causes.h"
 #include "content/common/webkitplatformsupport_impl.h"
 #include "content/public/common/content_switches.h"
 #include "gpu/ipc/command_buffer_proxy.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebGraphicsContext3D.h"
 #include "ui/compositor/compositor.h"
 #include "ui/compositor/compositor_setup.h"
 #include "ui/compositor/test_web_graphics_context_3d.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/size.h"
+#include "third_party/khronos/GLES2/gl2.h"
+#include "third_party/khronos/GLES2/gl2ext.h"
 
 #if defined(OS_WIN)
 #include "ui/surface/accelerated_surface_win.h"
 #endif
 
 using content::BrowserGpuChannelHostFactory;
 using content::GLHelper;
 using content::GpuChannelHostFactory;
 using content::GpuSurfaceTracker;
 using content::WebGraphicsContext3DCommandBufferImpl;
@@ skipping 19 matching lines @@
     return gfx::GLSurfaceHandle();
   }
 
   virtual void DestroySharedSurfaceHandle(
       gfx::GLSurfaceHandle surface) OVERRIDE {
   }
 
   virtual scoped_refptr<ui::Texture> CreateTransportClient(
       const gfx::Size& size,
       float device_scale_factor,
-      uint64 transport_handle) OVERRIDE {
+      const std::vector<signed char>& mailbox_name) OVERRIDE {
     return NULL;
   }
 
   virtual scoped_refptr<ui::Texture> CreateOwnedTexture(
       const gfx::Size& size,
       float device_scale_factor,
       unsigned int texture_id) OVERRIDE {
     return NULL;
   }
 
@@ skipping 11 matching lines @@
   }
 
   virtual void RemoveObserver(
       ImageTransportFactoryObserver* observer) OVERRIDE {
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DefaultTransportFactory);
 };
 
-class ImageTransportClientTexture : public ui::Texture {
- public:
-  ImageTransportClientTexture(
-      WebKit::WebGraphicsContext3D* host_context,
-      const gfx::Size& size,
-      float device_scale_factor,
-      uint64 surface_id)
-          : ui::Texture(true, size, device_scale_factor),
-            host_context_(host_context),
-            texture_id_(surface_id) {
-  }
-
-  // ui::Texture overrides:
-  virtual unsigned int PrepareTexture() OVERRIDE {
-    return texture_id_;
-  }
-
-  virtual WebKit::WebGraphicsContext3D* HostContext3D() OVERRIDE {
-    return host_context_;
-  }
-
- protected:
-  virtual ~ImageTransportClientTexture() {}
-
- private:
-  // A raw pointer. This |ImageTransportClientTexture| will be destroyed
-  // before the |host_context_| via
-  // |ImageTransportFactoryObserver::OnLostContext()| handlers.
-  WebKit::WebGraphicsContext3D* host_context_;
-  unsigned texture_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(ImageTransportClientTexture);
-};
-
 class OwnedTexture : public ui::Texture, ImageTransportFactoryObserver {
  public:
   OwnedTexture(WebKit::WebGraphicsContext3D* host_context,
                const gfx::Size& size,
                float device_scale_factor,
                unsigned int texture_id)
       : ui::Texture(true, size, device_scale_factor),
         host_context_(host_context),
         texture_id_(texture_id) {
     ImageTransportFactory::GetInstance()->AddObserver(this);
@@ skipping 12 matching lines @@
   virtual void OnLostResources() OVERRIDE {
     DeleteTexture();
   }
 
  protected:
   virtual ~OwnedTexture() {
     ImageTransportFactory::GetInstance()->RemoveObserver(this);
     DeleteTexture();
   }
 
- private:
+ protected:
   void DeleteTexture() {
     if (texture_id_) {
       host_context_->deleteTexture(texture_id_);
       texture_id_ = 0;
     }
   }
 
   // A raw pointer. This |ImageTransportClientTexture| will be destroyed
   // before the |host_context_| via
   // |ImageTransportFactoryObserver::OnLostContext()| handlers.
   WebKit::WebGraphicsContext3D* host_context_;
   unsigned texture_id_;
 
   DISALLOW_COPY_AND_ASSIGN(OwnedTexture);
 };
 
+class ImageTransportClientTexture : public OwnedTexture {
+ public:
+  ImageTransportClientTexture(
+      WebKit::WebGraphicsContext3D* host_context,
+      const gfx::Size& size,
+      float device_scale_factor,
+      const std::vector<signed char>& mailbox_name)
+          : OwnedTexture(host_context,
+                         size, 
+                         device_scale_factor,
+                         host_context->createTexture()),
+            mailbox_name_(mailbox_name) {
+    DCHECK(mailbox_name.size() == GL_MAILBOX_SIZE_CHROMIUM);
+  }
+
+  virtual void Consume(const gfx::Size& new_size) OVERRIDE {
+    if (host_context_) {
+      DCHECK(texture_id_);
+      host_context_->bindTexture(GL_TEXTURE_2D, texture_id_);
+      host_context_->consumeTextureCHROMIUM(
+          GL_TEXTURE_2D, mailbox_name_.data());
+      size_ = new_size;
+    }
+  }
+
+  virtual void Produce() OVERRIDE {
+    if (host_context_) {
+      DCHECK(texture_id_);
+      host_context_->bindTexture(GL_TEXTURE_2D, texture_id_);
+      host_context_->produceTextureCHROMIUM(
+          GL_TEXTURE_2D, mailbox_name_.data());

[jonathan.backer, 2012/11/12 16:52:14]

cppreference.com says that std::vector::data is a C++11 feature. Is this OK?

+    }
+  }
+
+ protected:
+  virtual ~ImageTransportClientTexture() {}
+
+ private:
+  std::vector<signed char> mailbox_name_;
+  DISALLOW_COPY_AND_ASSIGN(ImageTransportClientTexture);
+};
+
 class GpuProcessTransportFactory;
 
 class CompositorSwapClient
     : public base::SupportsWeakPtr<CompositorSwapClient>,
       public WebGraphicsContext3DSwapBuffersClient {
  public:
   CompositorSwapClient(ui::Compositor* compositor,
                        GpuProcessTransportFactory* factory)
       : compositor_(compositor),
         factory_(factory) {
@@ skipping 72 matching lines @@
 
   virtual ui::ContextFactory* AsContextFactory() OVERRIDE {
     return this;
   }
 
   virtual gfx::GLSurfaceHandle CreateSharedSurfaceHandle() OVERRIDE {
     CreateSharedContextLazy();
     gfx::GLSurfaceHandle handle = gfx::GLSurfaceHandle(
         gfx::kNullPluginWindow, true);
     handle.parent_gpu_process_id = shared_context_->GetGPUProcessID();
-    handle.parent_client_id = shared_context_->GetChannelID();
-    handle.parent_context_id = shared_context_->GetContextID();
-    handle.parent_texture_id[0] = shared_context_->createTexture();
-    handle.parent_texture_id[1] = shared_context_->createTexture();
-    handle.sync_point = shared_context_->insertSyncPoint();
 
     return handle;
   }
 
   virtual void DestroySharedSurfaceHandle(
       gfx::GLSurfaceHandle surface) OVERRIDE {
-    if (!shared_context_.get())
-      return;
-    uint32 channel_id = shared_context_->GetChannelID();
-    uint32 context_id = shared_context_->GetContextID();
-    if (surface.parent_gpu_process_id != shared_context_->GetGPUProcessID() ||
-        surface.parent_client_id != channel_id ||
-        surface.parent_context_id != context_id)
-      return;
-
-    shared_context_->deleteTexture(surface.parent_texture_id[0]);
-    shared_context_->deleteTexture(surface.parent_texture_id[1]);
-    shared_context_->flush();
   }
 
   virtual scoped_refptr<ui::Texture> CreateTransportClient(
       const gfx::Size& size,
       float device_scale_factor,
-      uint64 transport_handle) {
+      const std::vector<signed char>& mailbox_name) {
     if (!shared_context_.get())
         return NULL;
     scoped_refptr<ImageTransportClientTexture> image(
         new ImageTransportClientTexture(shared_context_.get(),
                                         size, device_scale_factor,
-                                        transport_handle));
+                                        mailbox_name));
     return image;
   }
 
   virtual scoped_refptr<ui::Texture> CreateOwnedTexture(
       const gfx::Size& size,
       float device_scale_factor,
       unsigned int texture_id) OVERRIDE {
     if (!shared_context_.get())
         return NULL;
     scoped_refptr<OwnedTexture> image(
@@ skipping 185 matching lines @@
 void ImageTransportFactory::Terminate() {
   ui::ContextFactory::SetInstance(NULL);
   delete g_factory;
   g_factory = NULL;
 }
 
 // static
 ImageTransportFactory* ImageTransportFactory::GetInstance() {
   return g_factory;
 }