Added ppapi::Context3D interface. The API has already been reviewed. I am add...

webkit/plugins/ppapi/ppb_context_3d_impl.h

+// 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.
+
+#ifndef WEBKIT_PLUGINS_PPAPI_PPB_CONTEXT_3D_IMPL_H_
+#define WEBKIT_PLUGINS_PPAPI_PPB_CONTEXT_3D_IMPL_H_
+
+#include "base/callback.h"
+#include "base/scoped_ptr.h"
+#include "ppapi/c/dev/ppb_context_3d_dev.h"
+#include "webkit/plugins/ppapi/plugin_delegate.h"
+#include "webkit/plugins/ppapi/resource.h"
+
+namespace gfx{
+class Size;
+}
+
+namespace gpu {
+namespace gles2 {
+class GLES2Implementation;
+}  // namespace gles2
+}  // namespace gpu
+
+namespace webkit {
+namespace ppapi {
+
+class PPB_Context3D_Impl : public Resource {
+ public:
+  explicit PPB_Context3D_Impl(PluginModule* module);
+  virtual ~PPB_Context3D_Impl();
+
+  static const PPB_Context3D_Dev* GetInterface();
+
+  // Resource override.
+  virtual PPB_Context3D_Impl* AsPPB_Context3D_Impl();
+
+  bool Init(PluginInstance* instance,
+            PP_Config3D_Dev config,
+            PP_Resource share_context,
+            const int32_t* attrib_list);
+
+  // Associates this PPB_Context3D_Impl with the given plugin instance.
+  // You can pass NULL to clear the existing device. Returns true on success.
+  // In this case, the last rendered frame is displayed.
+  //
+  // TODO(alokp): This is confusing. This context is already associated with
+  // an instance. This function should rather be called BindToInstanceGraphics
+  // or something similar which means from this point on, anything drawn with
+  // this context appears on instance window. This function should also not
+  // take any argument. But this means modifying PPB_Instance::BindGraphics.

[brettw, 2010/12/22 22:56:21]

I'm not quite sure what you mean here. "This function" is an internal function
called by PPB_Instance_Impl, you can make it take whatever arguments (or not)
you wish.

[alokp, 2010/12/22 23:04:49]

Yes I will remove the argument when I move this function to Surface3D_Impl.

+  bool BindToInstance(PluginInstance* new_instance);
+
+  bool SwapBuffers();
+  void SetSwapBuffersCallback(Callback0::Type* callback);
+
+  unsigned int GetBackingTextureId();
+  void ResizeBackingTexture(const gfx::Size& size);
+
+  gpu::gles2::GLES2Implementation* gles2_impl() {
+    return gles2_impl_;
+  }
+
+ private:
+  void Destroy();
+
+  // Non-owning pointer to the plugin instance this context is currently bound
+  // to, if any. If the context is currently unbound, this will be NULL.
+  PluginInstance* bound_instance_;
+
+  // PluginDelegate's 3D Context. Responsible for providing the command buffer.
+  scoped_ptr<PluginDelegate::PlatformContext3D> platform_context_;
+
+  // GLES2 Implementation instance. Owned by the platform context's GGL context.
+  gpu::gles2::GLES2Implementation* gles2_impl_;
+
+  DISALLOW_COPY_AND_ASSIGN(PPB_Context3D_Impl);
+};
+
+}  // namespace ppapi
+}  // namespace webkit
+
+#endif  // WEBKIT_PLUGINS_PPAPI_PPB_CONTEXT_3D_IMPL_H_