components/surfaces/context_provider_mojo.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/surfaces/context_provider_mojo.h"
   6
   7 #include "base/logging.h"
   8 #include "third_party/mojo/src/mojo/public/cpp/environment/environment.h"
   9
  10 namespace mojo {
  11
  12 ContextProviderMojo::ContextProviderMojo(
  13     ScopedMessagePipeHandle command_buffer_handle)
  14     : command_buffer_handle_(command_buffer_handle.Pass()),
  15       context_(nullptr),
  16       context_lost_(false) {
  17 }
  18
  19 bool ContextProviderMojo::BindToCurrentThread() {
  20   DCHECK(command_buffer_handle_.is_valid());
  21   context_ = MojoGLES2CreateContext(command_buffer_handle_.release().value(),
  22                                     &ContextLostThunk, this,
  23                                     Environment::GetDefaultAsyncWaiter());
  24   DCHECK(context_);
  25   return !!context_;
  26 }
  27
  28 gpu::gles2::GLES2Interface* ContextProviderMojo::ContextGL() {
  29   if (!context_)
  30     return nullptr;
  31   return static_cast<gpu::gles2::GLES2Interface*>(
  32       MojoGLES2GetGLES2Interface(context_));
  33 }
  34
  35 gpu::ContextSupport* ContextProviderMojo::ContextSupport() {
  36   if (!context_)
  37     return nullptr;
  38   return static_cast<gpu::ContextSupport*>(
  39       MojoGLES2GetContextSupport(context_));
  40 }
  41
  42 class GrContext* ContextProviderMojo::GrContext() {
  43   return NULL;
  44 }
  45
  46 cc::ContextProvider::Capabilities ContextProviderMojo::ContextCapabilities() {
  47   return capabilities_;
  48 }
  49
  50 void ContextProviderMojo::SetupLock() {
  51 }
  52
  53 base::Lock* ContextProviderMojo::GetLock() {
  54   return &context_lock_;
  55 }
  56
  57 bool ContextProviderMojo::IsContextLost() {
  58   return context_lost_;
  59 }
  60 bool ContextProviderMojo::DestroyedOnMainThread() {
  61   return !context_;
  62 }
  63
  64 void ContextProviderMojo::SetLostContextCallback(
  65     const LostContextCallback& lost_context_callback) {
  66   lost_context_callback_ = lost_context_callback;
  67 }
  68
  69 ContextProviderMojo::~ContextProviderMojo() {
  70   if (context_)
  71     MojoGLES2DestroyContext(context_);
  72 }
  73
  74 void ContextProviderMojo::ContextLost() {
  75   context_lost_ = true;
  76   if (!lost_context_callback_.is_null())
  77     lost_context_callback_.Run();
  78 }
  79
  80 }  // namespace mojo