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| 1 // Copyright 2013 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 "cc/resources/texture_mailbox_deleter.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/location.h" | |
| 9 #include "base/memory/weak_ptr.h" | |
| 10 #include "base/single_thread_task_runner.h" | |
| 11 #include "cc/output/context_provider.h" | |
| 12 #include "cc/resources/single_release_callback.h" | |
| 13 #include "gpu/command_buffer/client/gles2_interface.h" | |
| 14 | |
| 15 namespace cc { | |
| 16 | |
| 17 static void DeleteTextureOnImplThread( | |
| 18 const scoped_refptr<ContextProvider>& context_provider, | |
| 19 unsigned texture_id, | |
| 20 uint32 sync_point, | |
| 21 bool is_lost) { | |
| 22 if (sync_point) | |
| 23 context_provider->ContextGL()->WaitSyncPointCHROMIUM(sync_point); | |
| 24 context_provider->ContextGL()->DeleteTextures(1, &texture_id); | |
| 25 } | |
| 26 | |
| 27 static void PostTaskFromMainToImplThread( | |
| 28 scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner, | |
| 29 ReleaseCallback run_impl_callback, | |
| 30 unsigned sync_point, | |
| 31 bool is_lost) { | |
| 32 // This posts the task to RunDeleteTextureOnImplThread(). | |
| 33 impl_task_runner->PostTask( | |
| 34 FROM_HERE, base::Bind(run_impl_callback, sync_point, is_lost)); | |
| 35 } | |
| 36 | |
| 37 TextureMailboxDeleter::TextureMailboxDeleter( | |
| 38 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner) | |
| 39 : impl_task_runner_(task_runner), weak_ptr_factory_(this) {} | |
| 40 | |
| 41 TextureMailboxDeleter::~TextureMailboxDeleter() { | |
| 42 for (size_t i = 0; i < impl_callbacks_.size(); ++i) | |
| 43 impl_callbacks_.at(i)->Run(0, true); | |
| 44 } | |
| 45 | |
| 46 scoped_ptr<SingleReleaseCallback> TextureMailboxDeleter::GetReleaseCallback( | |
| 47 const scoped_refptr<ContextProvider>& context_provider, | |
| 48 unsigned texture_id) { | |
| 49 // This callback owns a reference on the |context_provider|. It must be | |
| 50 // destroyed on the impl thread. Upon destruction of this class, the | |
| 51 // callback must immediately be destroyed. | |
| 52 scoped_ptr<SingleReleaseCallback> impl_callback = | |
| 53 SingleReleaseCallback::Create(base::Bind(&DeleteTextureOnImplThread, | |
| 54 context_provider, | |
| 55 texture_id)); | |
| 56 | |
| 57 impl_callbacks_.push_back(impl_callback.Pass()); | |
| 58 | |
| 59 // The raw pointer to the impl-side callback is valid as long as this | |
| 60 // class is alive. So we guard it with a WeakPtr. | |
| 61 ReleaseCallback run_impl_callback( | |
| 62 base::Bind(&TextureMailboxDeleter::RunDeleteTextureOnImplThread, | |
| 63 weak_ptr_factory_.GetWeakPtr(), | |
| 64 impl_callbacks_.back())); | |
| 65 | |
| 66 // Provide a callback for the main thread that posts back to the impl | |
| 67 // thread. | |
| 68 scoped_ptr<SingleReleaseCallback> main_callback = | |
| 69 SingleReleaseCallback::Create(base::Bind( | |
| 70 &PostTaskFromMainToImplThread, impl_task_runner_, run_impl_callback)); | |
| 71 | |
| 72 return main_callback.Pass(); | |
| 73 } | |
| 74 | |
| 75 void TextureMailboxDeleter::RunDeleteTextureOnImplThread( | |
| 76 SingleReleaseCallback* impl_callback, | |
| 77 unsigned sync_point, | |
| 78 bool is_lost) { | |
| 79 for (size_t i = 0; i < impl_callbacks_.size(); ++i) { | |
| 80 if (impl_callbacks_.at(i) == impl_callback) { | |
| 81 // Run the callback, then destroy it here on the impl thread. | |
| 82 impl_callbacks_.at(i)->Run(sync_point, is_lost); | |
| 83 impl_callbacks_.erase(impl_callbacks_.begin() + i); | |
| 84 return; | |
| 85 } | |
| 86 } | |
| 87 | |
| 88 NOTREACHED() << "The Callback returned by GetDeleteCallback() was called " | |
| 89 << "more than once."; | |
| 90 } | |
| 91 | |
| 92 } // namespace cc | |
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