src/cc/resources/texture_mailbox.cc

   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 "third_party/khronos/GLES2/gl2.h"
   9
  10 namespace cc {
  11
  12 TextureMailbox::TextureMailbox() : shared_memory_(NULL) {}
  13
  14 TextureMailbox::TextureMailbox(const gpu::MailboxHolder& mailbox_holder)
  15     : mailbox_holder_(mailbox_holder), shared_memory_(NULL) {}
  16
  17 TextureMailbox::TextureMailbox(const gpu::Mailbox& mailbox,
  18                                uint32 target,
  19                                uint32 sync_point)
  20     : mailbox_holder_(mailbox, target, sync_point), shared_memory_(NULL) {}
  21
  22 TextureMailbox::TextureMailbox(base::SharedMemory* shared_memory,
  23                                const gfx::Size& size)
  24     : shared_memory_(shared_memory), shared_memory_size_(size) {}
  25
  26 TextureMailbox::~TextureMailbox() {}
  27
  28 bool TextureMailbox::Equals(const TextureMailbox& other) const {
  29   if (other.IsTexture()) {
  30     return IsTexture() && !memcmp(mailbox_holder_.mailbox.name,
  31                                   other.mailbox_holder_.mailbox.name,
  32                                   sizeof(mailbox_holder_.mailbox.name));
  33   } else if (other.IsSharedMemory()) {
  34     return IsSharedMemory() &&
  35            shared_memory_->handle() == other.shared_memory_->handle();
  36   }
  37
  38   DCHECK(!other.IsValid());
  39   return !IsValid();
  40 }
  41
  42 size_t TextureMailbox::shared_memory_size_in_bytes() const {
  43   return 4 * shared_memory_size_.GetArea();
  44 }
  45
  46 }  // namespace cc