Mojo container example for hosting Pepper plugins

mojo/examples/pepper_container_app/graphics_3d_resource.cc

+// Copyright 2014 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 "mojo/examples/pepper_container_app/graphics_3d_resource.h"
+
+#include "base/logging.h"
+#include "mojo/examples/pepper_container_app/mojo_ppapi_globals.h"
+#include "mojo/examples/pepper_container_app/plugin_instance.h"
+#include "mojo/public/gles2/gles2.h"
+#include "ppapi/c/pp_errors.h"
+
+namespace mojo {
+namespace examples {
+
+namespace {
+
+gpu::CommandBuffer::State GetErrorState() {
+  gpu::CommandBuffer::State error_state;
+  error_state.error = gpu::error::kGenericError;
+  return error_state;
+}
+
+}  // namespace
+
+Graphics3DResource::Graphics3DResource(PP_Instance instance)
+    : Resource(ppapi::OBJECT_IS_IMPL, instance) {
+  ScopedMessagePipeHandle pipe = MojoPpapiGlobals::Get()->CreateGLES2Context();
+  context_ = MojoGLES2CreateContext(pipe.release().value(),
+                                    &ContextLostThunk,
+                                    &DrawAnimationFrameThunk,
+                                    this);
+}
+
+Graphics3DResource::~Graphics3DResource() {
+  MojoGLES2DestroyContext(context_);
+}
+
+bool Graphics3DResource::IsBoundGraphics() const {
+  PluginInstance* plugin_instance =
+      MojoPpapiGlobals::Get()->GetInstance(pp_instance());
+  return plugin_instance && plugin_instance->IsBoundGraphics(pp_resource());
+}
+
+void Graphics3DResource::BindGraphics() {
+  MojoGLES2MakeCurrent(context_);
+}
+
+ppapi::thunk::PPB_Graphics3D_API* Graphics3DResource::AsPPB_Graphics3D_API() {
+  return this;
+}
+
+int32_t Graphics3DResource::GetAttribs(int32_t attrib_list[]) {
+  NOTIMPLEMENTED();
+  return PP_ERROR_FAILED;
+}
+
+int32_t Graphics3DResource::SetAttribs(const int32_t attrib_list[]) {
+  NOTIMPLEMENTED();
+  return PP_ERROR_FAILED;
+}
+
+int32_t Graphics3DResource::GetError() {
+  NOTIMPLEMENTED();
+  return PP_ERROR_FAILED;
+}
+
+int32_t Graphics3DResource::ResizeBuffers(int32_t width, int32_t height) {
+  NOTIMPLEMENTED();
+  return PP_ERROR_FAILED;
+}
+
+int32_t Graphics3DResource::SwapBuffers(
+    scoped_refptr<ppapi::TrackedCallback> callback) {
+  if (!IsBoundGraphics())
+    return PP_ERROR_FAILED;
+
+  MojoGLES2SwapBuffers();
+  return PP_OK;
+}
+
+int32_t Graphics3DResource::GetAttribMaxValue(int32_t attribute,
+                                              int32_t* value) {
+  NOTIMPLEMENTED();
+  return PP_ERROR_FAILED;
+}
+
+PP_Bool Graphics3DResource::SetGetBuffer(int32_t shm_id) {
+  NOTIMPLEMENTED();
+  return PP_FALSE;
+}
+
+gpu::CommandBuffer::State Graphics3DResource::GetState() {
+  NOTIMPLEMENTED();
+  return GetErrorState();
+}
+
+int32_t Graphics3DResource::CreateTransferBuffer(uint32_t size) {
+  NOTIMPLEMENTED();
+  return PP_FALSE;
+}
+
+PP_Bool Graphics3DResource::DestroyTransferBuffer(int32_t id) {
+  NOTIMPLEMENTED();
+  return PP_FALSE;
+}
+
+PP_Bool Graphics3DResource::GetTransferBuffer(int32_t id,
+                                              int* shm_handle,
+                                              uint32_t* shm_size) {
+  NOTIMPLEMENTED();
+  return PP_FALSE;
+}
+
+PP_Bool Graphics3DResource::Flush(int32_t put_offset) {
+  NOTIMPLEMENTED();
+  return PP_FALSE;
+}
+
+gpu::CommandBuffer::State Graphics3DResource::FlushSync(int32_t put_offset) {
+  NOTIMPLEMENTED();
+  return GetErrorState();
+}
+
+gpu::CommandBuffer::State Graphics3DResource::FlushSyncFast(
+    int32_t put_offset,
+    int32_t last_known_get) {
+  NOTIMPLEMENTED();
+  return GetErrorState();
+}
+
+void* Graphics3DResource::MapTexSubImage2DCHROMIUM(GLenum target,
+                                                   GLint level,
+                                                   GLint xoffset,
+                                                   GLint yoffset,
+                                                   GLsizei width,
+                                                   GLsizei height,
+                                                   GLenum format,
+                                                   GLenum type,
+                                                   GLenum access) {
+  NOTIMPLEMENTED();
+  return NULL;
+}
+
+void Graphics3DResource::UnmapTexSubImage2DCHROMIUM(const void* mem) {
+  NOTIMPLEMENTED();
+}
+
+uint32_t Graphics3DResource::InsertSyncPoint() {
+  NOTIMPLEMENTED();
+  return 0;
+}
+
+void Graphics3DResource::ContextLostThunk(void* closure) {
+  static_cast<Graphics3DResource*>(closure)->ContextLost();
+}
+
+void Graphics3DResource::DrawAnimationFrameThunk(void* closure) {
+  // Do nothing.

[darin (slow to review), 2014/03/20 23:29:35]

probably worth adding a TODO here about using this to drive the SwapBuffers
callback since the SwapBuffers callback is supposed to be delayed until the
start of the next frame to help the plugin only render on vsync.

[yzshen1, 2014/03/21 03:22:00]

Good point. Thanks!

+}
+
+void Graphics3DResource::ContextLost() {
+  PluginInstance* plugin_instance =
+      MojoPpapiGlobals::Get()->GetInstance(pp_instance());
+  if (plugin_instance)
+    plugin_instance->Graphics3DContextLost();
+}
+
+}  // namespace examples
+}  // namespace mojo