components/view_manager/surfaces/surfaces_context_provider.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/view_manager/surfaces/surfaces_context_provider.h"
   6
   7 #include "base/logging.h"
   8 #include "third_party/mojo/src/mojo/public/cpp/environment/environment.h"
   9
  10 namespace surfaces {
  11
  12 SurfacesContextProvider::SurfacesContextProvider(
  13     mojo::ScopedMessagePipeHandle command_buffer_handle)
  14     : command_buffer_handle_(command_buffer_handle.Pass()), context_(nullptr) {
  15   capabilities_.gpu.image = true;
  16 }
  17
  18 bool SurfacesContextProvider::BindToCurrentThread() {
  19   DCHECK(command_buffer_handle_.is_valid());
  20   context_ = MojoGLES2CreateContext(command_buffer_handle_.release().value(),
  21                                     &ContextLostThunk, this,
  22                                     mojo::Environment::GetDefaultAsyncWaiter());
  23   DCHECK(context_);
  24   return !!context_;
  25 }
  26
  27 gpu::gles2::GLES2Interface* SurfacesContextProvider::ContextGL() {
  28   if (!context_)
  29     return nullptr;
  30   return static_cast<gpu::gles2::GLES2Interface*>(
  31       MojoGLES2GetGLES2Interface(context_));
  32 }
  33
  34 gpu::ContextSupport* SurfacesContextProvider::ContextSupport() {
  35   if (!context_)
  36     return nullptr;
  37   return static_cast<gpu::ContextSupport*>(
  38       MojoGLES2GetContextSupport(context_));
  39 }
  40
  41 class GrContext* SurfacesContextProvider::GrContext() {
  42   return NULL;
  43 }
  44
  45 void SurfacesContextProvider::InvalidateGrContext(uint32_t state) {
  46 }
  47
  48 cc::ContextProvider::Capabilities
  49 SurfacesContextProvider::ContextCapabilities() {
  50   return capabilities_;
  51 }
  52
  53 void SurfacesContextProvider::SetupLock() {
  54 }
  55
  56 base::Lock* SurfacesContextProvider::GetLock() {
  57   return &context_lock_;
  58 }
  59
  60 bool SurfacesContextProvider::DestroyedOnMainThread() {
  61   return !context_;
  62 }
  63
  64 void SurfacesContextProvider::SetLostContextCallback(
  65     const LostContextCallback& lost_context_callback) {
  66   lost_context_callback_ = lost_context_callback;
  67 }
  68
  69 SurfacesContextProvider::~SurfacesContextProvider() {
  70   if (context_)
  71     MojoGLES2DestroyContext(context_);
  72 }
  73
  74 void SurfacesContextProvider::ContextLost() {
  75   if (!lost_context_callback_.is_null())
  76     lost_context_callback_.Run();
  77 }
  78
  79 }  // namespace surfaces