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.h" 6 7 #include "base/logging.h" 8 #include "cc/resources/shared_bitmap.h" 9 #include "third_party/khronos/GLES2/gl2.h" 10 11 namespace cc { 12 13 TextureMailbox::TextureMailbox() : shared_memory_(NULL) {} 14 15 TextureMailbox::TextureMailbox(const gpu::MailboxHolder& mailbox_holder) 16 : mailbox_holder_(mailbox_holder), 17 shared_memory_(NULL), 18 allow_overlay_(false) {} 19 20 TextureMailbox::TextureMailbox(const gpu::Mailbox& mailbox, 21 uint32 target, 22 uint32 sync_point) 23 : mailbox_holder_(mailbox, target, sync_point), 24 shared_memory_(NULL), 25 allow_overlay_(false) {} 26 27 TextureMailbox::TextureMailbox(base::SharedMemory* shared_memory, 28 const gfx::Size& size) 29 : shared_memory_(shared_memory), 30 shared_memory_size_(size), 31 allow_overlay_(false) { 32 // If an embedder of cc gives an invalid TextureMailbox, we should crash 33 // here to identify the offender. 34 CHECK(SharedBitmap::VerifySizeInBytes(shared_memory_size_)); 35 } 36 37 TextureMailbox::~TextureMailbox() {} 38 39 bool TextureMailbox::Equals(const TextureMailbox& other) const { 40 if (other.IsTexture()) { 41 return IsTexture() && !memcmp(mailbox_holder_.mailbox.name, 42 other.mailbox_holder_.mailbox.name, 43 sizeof(mailbox_holder_.mailbox.name)); 44 } else if (other.IsSharedMemory()) { 45 return IsSharedMemory() && 46 shared_memory_->handle() == other.shared_memory_->handle(); 47 } 48 49 DCHECK(!other.IsValid()); 50 return !IsValid(); 51 } 52 53 size_t TextureMailbox::SharedMemorySizeInBytes() const { 54 // UncheckedSizeInBytes is okay because we VerifySizeInBytes in the 55 // constructor and the field is immutable. 56 return SharedBitmap::UncheckedSizeInBytes(shared_memory_size_); 57 } 58 59 } // namespace cc 60
