Move PlatformContext3DImpl to separate file

This is preliminary work to hook up 3D context to fullscreen pepper

BUG=none
TEST=run with --enable-accelerated-layers

Review URL: http://codereview.chromium.org/5842003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@69375 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 142 insertions, 114 deletions

diff --git a/chrome/chrome_renderer.gypi b/chrome/chrome_renderer.gypi
index dc253b7..8ad6da3 100644
--- a/chrome/chrome_renderer.gypi
+++ b/chrome/chrome_renderer.gypi
@@ -142,6 +142,8 @@
         'renderer/password_autocomplete_manager.h',
         'renderer/pepper_devices.cc',
         'renderer/pepper_devices.h',
+        'renderer/pepper_platform_context_3d_impl.cc',
+        'renderer/pepper_platform_context_3d_impl.h',
         'renderer/pepper_plugin_delegate_impl.cc',
         'renderer/pepper_plugin_delegate_impl.h',
         'renderer/pepper_scrollbar_widget.cc',
diff --git a/chrome/renderer/pepper_platform_context_3d_impl.cc b/chrome/renderer/pepper_platform_context_3d_impl.cc
new file mode 100644
index 0000000..1d86a67
--- /dev/null
+++ b/chrome/renderer/pepper_platform_context_3d_impl.cc
@@ -0,0 +1,94 @@
+// Copyright (c) 2010 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 "chrome/renderer/pepper_platform_context_3d_impl.h"
+
+#include "chrome/renderer/ggl/ggl.h"
+#include "chrome/renderer/gpu_channel_host.h"
+#include "chrome/renderer/render_thread.h"
+
+#ifdef ENABLE_GPU
+PlatformContext3DImpl::PlatformContext3DImpl(ggl::Context* parent_context)
+  : parent_context_(parent_context),
+  context_(NULL) {
+}
+
+PlatformContext3DImpl::~PlatformContext3DImpl() {
+  if (context_) {
+    ggl::DestroyContext(context_);
+    context_ = NULL;
+  }
+}
+
+bool PlatformContext3DImpl::Init() {
+  // Ignore initializing more than once.
+  if (context_)
+    return true;
+
+  RenderThread* render_thread = RenderThread::current();
+  if (!render_thread)
+    return false;
+
+  GpuChannelHost* host = render_thread->GetGpuChannel();
+  if (!host)
+    return false;
+
+  DCHECK(host->state() == GpuChannelHost::kConnected);
+
+  // TODO(apatrick): Let Pepper plugins configure their back buffer surface.
+  static const int32 attribs[] = {
+    ggl::GGL_ALPHA_SIZE, 8,
+    ggl::GGL_DEPTH_SIZE, 24,
+    ggl::GGL_STENCIL_SIZE, 8,
+    ggl::GGL_SAMPLES, 0,
+    ggl::GGL_SAMPLE_BUFFERS, 0,
+    ggl::GGL_NONE,
+  };
+
+  // TODO(apatrick): Decide which extensions to expose to Pepper plugins.
+  // Currently they get only core GLES2.
+  context_ = ggl::CreateOffscreenContext(host,
+                                         parent_context_,
+                                         gfx::Size(1, 1),
+                                         "",
+                                         attribs);
+  if (!context_)
+    return false;
+
+  return true;
+}
+
+bool PlatformContext3DImpl::SwapBuffers() {
+  DCHECK(context_);
+  return ggl::SwapBuffers(context_);
+}
+
+unsigned PlatformContext3DImpl::GetError() {
+  DCHECK(context_);
+  return ggl::GetError(context_);
+}
+
+void PlatformContext3DImpl::ResizeBackingTexture(const gfx::Size& size) {
+  DCHECK(context_);
+  ggl::ResizeOffscreenContext(context_, size);
+}
+
+void PlatformContext3DImpl::SetSwapBuffersCallback(Callback0::Type* callback) {
+  DCHECK(context_);
+  ggl::SetSwapBuffersCallback(context_, callback);
+}
+
+unsigned PlatformContext3DImpl::GetBackingTextureId() {
+  DCHECK(context_);
+  return ggl::GetParentTextureId(context_);
+}
+
+gpu::gles2::GLES2Implementation*
+    PlatformContext3DImpl::GetGLES2Implementation() {
+  DCHECK(context_);
+  return ggl::GetImplementation(context_);
+}
+
+#endif  // ENABLE_GPU
+
diff --git a/chrome/renderer/pepper_platform_context_3d_impl.h b/chrome/renderer/pepper_platform_context_3d_impl.h
new file mode 100644
index 0000000..03c6bb6
--- /dev/null
+++ b/chrome/renderer/pepper_platform_context_3d_impl.h
@@ -0,0 +1,34 @@
+// Copyright (c) 2010 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/glue/plugins/pepper_plugin_delegate.h"
+
+#ifdef ENABLE_GPU
+
+namespace ggl {
+
+class Context;
+
+}  // namespace ggl;
+
+class PlatformContext3DImpl : public pepper::PluginDelegate::PlatformContext3D {
+ public:
+  explicit PlatformContext3DImpl(ggl::Context* parent_context);
+  virtual ~PlatformContext3DImpl();
+
+  virtual bool Init();
+  virtual bool SwapBuffers();
+  virtual unsigned GetError();
+  virtual void SetSwapBuffersCallback(Callback0::Type* callback);
+  void ResizeBackingTexture(const gfx::Size& size);
+  virtual unsigned GetBackingTextureId();
+  virtual gpu::gles2::GLES2Implementation* GetGLES2Implementation();
+
+ private:
+  ggl::Context* parent_context_;
+  ggl::Context* context_;
+};
+
+#endif  // ENABLE_GPU
+
diff --git a/chrome/renderer/pepper_plugin_delegate_impl.cc b/chrome/renderer/pepper_plugin_delegate_impl.cc
index e2fcfc7..7783dea 100644
--- a/chrome/renderer/pepper_plugin_delegate_impl.cc
+++ b/chrome/renderer/pepper_plugin_delegate_impl.cc
@@ -26,6 +26,7 @@
 #include "chrome/renderer/command_buffer_proxy.h"
 #include "chrome/renderer/ggl/ggl.h"
 #include "chrome/renderer/gpu_channel_host.h"
+#include "chrome/renderer/pepper_platform_context_3d_impl.h"
 #include "chrome/renderer/render_thread.h"
 #include "chrome/renderer/render_view.h"
 #include "chrome/renderer/webgraphicscontext3d_command_buffer_impl.h"
@@ -97,36 +98,6 @@ class PlatformImage2DImpl : public pepper::PluginDelegate::PlatformImage2D {
   DISALLOW_COPY_AND_ASSIGN(PlatformImage2DImpl);
 };
 
-#ifdef ENABLE_GPU
-
-class PlatformContext3DImpl : public pepper::PluginDelegate::PlatformContext3D {
- public:
-  explicit PlatformContext3DImpl(WebKit::WebView* web_view)
-      : web_view_(web_view),
-        context_(NULL) {
-  }
-
-  virtual ~PlatformContext3DImpl() {
-    if (context_) {
-      ggl::DestroyContext(context_);
-      context_ = NULL;
-    }
-  }
-
-  virtual bool Init();
-  virtual bool SwapBuffers();
-  virtual unsigned GetError();
-  virtual void SetSwapBuffersCallback(Callback0::Type* callback);
-  void ResizeBackingTexture(const gfx::Size& size);
-  virtual unsigned GetBackingTextureId();
-  virtual gpu::gles2::GLES2Implementation* GetGLES2Implementation();
-
- private:
-  WebKit::WebView* web_view_;
-  ggl::Context* context_;
-};
-
-#endif  // ENABLE_GPU
 
 class PlatformAudioImpl
     : public pepper::PluginDelegate::PlatformAudio,
@@ -191,89 +162,6 @@ class PlatformAudioImpl
   DISALLOW_COPY_AND_ASSIGN(PlatformAudioImpl);
 };
 
-#ifdef ENABLE_GPU
-
-bool PlatformContext3DImpl::Init() {
-  // Ignore initializing more than once.
-  if (context_)
-    return true;
-
-  WebGraphicsContext3DCommandBufferImpl* context =
-      static_cast<WebGraphicsContext3DCommandBufferImpl*>(
-          web_view_->graphicsContext3D());
-  if (!context)
-    return false;
-
-  ggl::Context* parent_context = context->context();
-  if (!parent_context)
-    return false;
-
-  RenderThread* render_thread = RenderThread::current();
-  if (!render_thread)
-    return false;
-
-  GpuChannelHost* host = render_thread->GetGpuChannel();
-  if (!host)
-    return false;
-
-  DCHECK(host->state() == GpuChannelHost::kConnected);
-
-  // TODO(apatrick): Let Pepper plugins configure their back buffer surface.
-  static const int32 attribs[] = {
-    ggl::GGL_ALPHA_SIZE, 8,
-    ggl::GGL_DEPTH_SIZE, 24,
-    ggl::GGL_STENCIL_SIZE, 8,
-    ggl::GGL_SAMPLES, 0,
-    ggl::GGL_SAMPLE_BUFFERS, 0,
-    ggl::GGL_NONE,
-  };
-
-  // TODO(apatrick): Decide which extensions to expose to Pepper plugins.
-  // Currently they get only core GLES2.
-  context_ = ggl::CreateOffscreenContext(host,
-                                         parent_context,
-                                         gfx::Size(1, 1),
-                                         "",
-                                         attribs);
-  if (!context_)
-    return false;
-
-  return true;
-}
-
-bool PlatformContext3DImpl::SwapBuffers() {
-  DCHECK(context_);
-  return ggl::SwapBuffers(context_);
-}
-
-unsigned PlatformContext3DImpl::GetError() {
-  DCHECK(context_);
-  return ggl::GetError(context_);
-}
-
-void PlatformContext3DImpl::ResizeBackingTexture(const gfx::Size& size) {
-  DCHECK(context_);
-  ggl::ResizeOffscreenContext(context_, size);
-}
-
-void PlatformContext3DImpl::SetSwapBuffersCallback(Callback0::Type* callback) {
-  DCHECK(context_);
-  ggl::SetSwapBuffersCallback(context_, callback);
-}
-
-unsigned PlatformContext3DImpl::GetBackingTextureId() {
-  DCHECK(context_);
-  return ggl::GetParentTextureId(context_);
-}
-
-gpu::gles2::GLES2Implementation*
-    PlatformContext3DImpl::GetGLES2Implementation() {
-  DCHECK(context_);
-  return ggl::GetImplementation(context_);
-}
-
-#endif  // ENABLE_GPU
-
 bool PlatformAudioImpl::Initialize(
     uint32_t sample_rate, uint32_t sample_count,
     pepper::PluginDelegate::PlatformAudio::Client* client) {
@@ -611,7 +499,17 @@ PepperPluginDelegateImpl::CreateImage2D(int width, int height) {
 pepper::PluginDelegate::PlatformContext3D*
     PepperPluginDelegateImpl::CreateContext3D() {
 #ifdef ENABLE_GPU
-  return new PlatformContext3DImpl(render_view_->webview());
+  WebGraphicsContext3DCommandBufferImpl* context =
+      static_cast<WebGraphicsContext3DCommandBufferImpl*>(
+          render_view_->webview()->graphicsContext3D());
+  if (!context)
+    return NULL;
+
+  ggl::Context* parent_context = context->context();
+  if (!parent_context)
+    return NULL;
+
+  return new PlatformContext3DImpl(parent_context);
 #else
   return NULL;
 #endif