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 "mojo/gles2/gles2_context.h"
6
7#include "gpu/command_buffer/client/gles2_cmd_helper.h"
8#include "gpu/command_buffer/client/gles2_implementation.h"
9#include "gpu/command_buffer/client/transfer_buffer.h"
10#include "mojo/public/c/gles2/gles2.h"
11#include "mojo/public/cpp/system/core.h"
12
13namespace mojo {
14namespace gles2 {
15
16namespace {
17const size_t kDefaultCommandBufferSize = 1024 * 1024;
18const size_t kDefaultStartTransferBufferSize = 1 * 1024 * 1024;
19const size_t kDefaultMinTransferBufferSize = 1 * 256 * 1024;
20const size_t kDefaultMaxTransferBufferSize = 16 * 1024 * 1024;
21}
22
23GLES2Context::GLES2Context(const MojoAsyncWaiter* async_waiter,
24                           ScopedMessagePipeHandle command_buffer_handle,
25                           MojoGLES2ContextLost lost_callback,
26                           void* closure)
27    : command_buffer_(this, async_waiter, command_buffer_handle.Pass()),
28      lost_callback_(lost_callback),
29      closure_(closure) {}
30
31GLES2Context::~GLES2Context() {}
32
33bool GLES2Context::Initialize() {
34  if (!command_buffer_.Initialize())
35    return false;
36  gles2_helper_.reset(new gpu::gles2::GLES2CmdHelper(&command_buffer_));
37  if (!gles2_helper_->Initialize(kDefaultCommandBufferSize))
38    return false;
39  gles2_helper_->SetAutomaticFlushes(false);
40  transfer_buffer_.reset(new gpu::TransferBuffer(gles2_helper_.get()));
41  bool bind_generates_resource = true;
42  // TODO(piman): Some contexts (such as compositor) want this to be true, so
43  // this needs to be a public parameter.
44  bool lose_context_when_out_of_memory = false;
45  implementation_.reset(
46      new gpu::gles2::GLES2Implementation(gles2_helper_.get(),
47                                          NULL,
48                                          transfer_buffer_.get(),
49                                          bind_generates_resource,
50                                          lose_context_when_out_of_memory,
51                                          &command_buffer_));
52  return implementation_->Initialize(kDefaultStartTransferBufferSize,
53                                     kDefaultMinTransferBufferSize,
54                                     kDefaultMaxTransferBufferSize,
55                                     gpu::gles2::GLES2Implementation::kNoLimit);
56}
57
58void GLES2Context::ContextLost() { lost_callback_(closure_); }
59
60}  // namespace gles2
61}  // namespace mojo
62