| // Copyright 2013 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 "cc/resources/texture_mailbox.h" |
| |
| #include "base/logging.h" |
| #include "cc/resources/shared_bitmap.h" |
| |
| namespace cc { |
| |
| TextureMailbox::TextureMailbox() : shared_memory_(NULL) {} |
| |
| TextureMailbox::TextureMailbox(const gpu::MailboxHolder& mailbox_holder) |
| : mailbox_holder_(mailbox_holder), |
| shared_memory_(NULL), |
| allow_overlay_(false) {} |
| |
| TextureMailbox::TextureMailbox(const gpu::Mailbox& mailbox, |
| uint32 target, |
| uint32 sync_point) |
| : mailbox_holder_(mailbox, target, sync_point), |
| shared_memory_(NULL), |
| allow_overlay_(false) {} |
| |
| TextureMailbox::TextureMailbox(base::SharedMemory* shared_memory, |
| const gfx::Size& size) |
| : shared_memory_(shared_memory), |
| shared_memory_size_(size), |
| allow_overlay_(false) { |
| // If an embedder of cc gives an invalid TextureMailbox, we should crash |
| // here to identify the offender. |
| CHECK(SharedBitmap::VerifySizeInBytes(shared_memory_size_)); |
| } |
| |
| TextureMailbox::~TextureMailbox() {} |
| |
| bool TextureMailbox::Equals(const TextureMailbox& other) const { |
| if (other.IsTexture()) { |
| return IsTexture() && !memcmp(mailbox_holder_.mailbox.name, |
| other.mailbox_holder_.mailbox.name, |
| sizeof(mailbox_holder_.mailbox.name)); |
| } else if (other.IsSharedMemory()) { |
| return IsSharedMemory() && |
| shared_memory_->handle() == other.shared_memory_->handle(); |
| } |
| |
| DCHECK(!other.IsValid()); |
| return !IsValid(); |
| } |
| |
| size_t TextureMailbox::SharedMemorySizeInBytes() const { |
| // UncheckedSizeInBytes is okay because we VerifySizeInBytes in the |
| // constructor and the field is immutable. |
| return SharedBitmap::UncheckedSizeInBytes(shared_memory_size_); |
| } |
| |
| } // namespace cc |