1// Copyright (c) 2012 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 "ppapi/shared_impl/ppb_graphics_3d_shared.h"
6
7#include "base/logging.h"
8#include "gpu/command_buffer/client/gles2_cmd_helper.h"
9#include "gpu/command_buffer/client/gles2_implementation.h"
10#include "gpu/command_buffer/client/transfer_buffer.h"
11#include "ppapi/c/pp_errors.h"
12
13namespace ppapi {
14
15PPB_Graphics3D_Shared::PPB_Graphics3D_Shared(PP_Instance instance)
16    : Resource(OBJECT_IS_IMPL, instance) {}
17
18PPB_Graphics3D_Shared::PPB_Graphics3D_Shared(const HostResource& host_resource)
19    : Resource(OBJECT_IS_PROXY, host_resource) {}
20
21PPB_Graphics3D_Shared::~PPB_Graphics3D_Shared() {
22  // Make sure that GLES2 implementation has already been destroyed.
23  DCHECK(!gles2_helper_.get());
24  DCHECK(!transfer_buffer_.get());
25  DCHECK(!gles2_impl_.get());
26}
27
28thunk::PPB_Graphics3D_API* PPB_Graphics3D_Shared::AsPPB_Graphics3D_API() {
29  return this;
30}
31
32int32_t PPB_Graphics3D_Shared::GetAttribs(int32_t attrib_list[]) {
33  // TODO(alokp): Implement me.
34  return PP_ERROR_FAILED;
35}
36
37int32_t PPB_Graphics3D_Shared::SetAttribs(const int32_t attrib_list[]) {
38  // TODO(alokp): Implement me.
39  return PP_ERROR_FAILED;
40}
41
42int32_t PPB_Graphics3D_Shared::GetError() {
43  // TODO(alokp): Implement me.
44  return PP_ERROR_FAILED;
45}
46
47int32_t PPB_Graphics3D_Shared::ResizeBuffers(int32_t width, int32_t height) {
48  if ((width < 0) || (height < 0))
49    return PP_ERROR_BADARGUMENT;
50
51  gles2_impl()->ResizeCHROMIUM(width, height, 1.f);
52  // TODO(alokp): Check if resize succeeded and return appropriate error code.
53  return PP_OK;
54}
55
56int32_t PPB_Graphics3D_Shared::SwapBuffers(
57    scoped_refptr<TrackedCallback> callback) {
58  if (HasPendingSwap()) {
59    Log(PP_LOGLEVEL_ERROR,
60        "PPB_Graphics3D.SwapBuffers: Plugin attempted swap "
61        "with previous swap still pending.");
62    // Already a pending SwapBuffers that hasn't returned yet.
63    return PP_ERROR_INPROGRESS;
64  }
65
66  swap_callback_ = callback;
67  return DoSwapBuffers();
68}
69
70int32_t PPB_Graphics3D_Shared::GetAttribMaxValue(int32_t attribute,
71                                                 int32_t* value) {
72  // TODO(alokp): Implement me.
73  return PP_ERROR_FAILED;
74}
75
76void* PPB_Graphics3D_Shared::MapTexSubImage2DCHROMIUM(GLenum target,
77                                                      GLint level,
78                                                      GLint xoffset,
79                                                      GLint yoffset,
80                                                      GLsizei width,
81                                                      GLsizei height,
82                                                      GLenum format,
83                                                      GLenum type,
84                                                      GLenum access) {
85  return gles2_impl_->MapTexSubImage2DCHROMIUM(
86      target, level, xoffset, yoffset, width, height, format, type, access);
87}
88
89void PPB_Graphics3D_Shared::UnmapTexSubImage2DCHROMIUM(const void* mem) {
90  gles2_impl_->UnmapTexSubImage2DCHROMIUM(mem);
91}
92
93void PPB_Graphics3D_Shared::SwapBuffersACK(int32_t pp_error) {
94  DCHECK(HasPendingSwap());
95  swap_callback_->Run(pp_error);
96}
97
98bool PPB_Graphics3D_Shared::HasPendingSwap() const {
99  return TrackedCallback::IsPending(swap_callback_);
100}
101
102bool PPB_Graphics3D_Shared::CreateGLES2Impl(
103    int32 command_buffer_size,
104    int32 transfer_buffer_size,
105    gpu::gles2::GLES2Implementation* share_gles2) {
106  gpu::CommandBuffer* command_buffer = GetCommandBuffer();
107  DCHECK(command_buffer);
108
109  // Create the GLES2 helper, which writes the command buffer protocol.
110  gles2_helper_.reset(new gpu::gles2::GLES2CmdHelper(command_buffer));
111  if (!gles2_helper_->Initialize(command_buffer_size))
112    return false;
113
114  // Create a transfer buffer used to copy resources between the renderer
115  // process and the GPU process.
116  const int32 kMinTransferBufferSize = 256 * 1024;
117  const int32 kMaxTransferBufferSize = 16 * 1024 * 1024;
118  transfer_buffer_.reset(new gpu::TransferBuffer(gles2_helper_.get()));
119
120  const bool bind_creates_resources = true;
121  const bool lose_context_when_out_of_memory = false;
122
123  // Create the object exposing the OpenGL API.
124  gles2_impl_.reset(new gpu::gles2::GLES2Implementation(
125      gles2_helper_.get(),
126      share_gles2 ? share_gles2->share_group() : NULL,
127      transfer_buffer_.get(),
128      bind_creates_resources,
129      lose_context_when_out_of_memory,
130      GetGpuControl()));
131
132  if (!gles2_impl_->Initialize(
133           transfer_buffer_size,
134           kMinTransferBufferSize,
135           std::max(kMaxTransferBufferSize, transfer_buffer_size),
136           gpu::gles2::GLES2Implementation::kNoLimit)) {
137    return false;
138  }
139
140  gles2_impl_->PushGroupMarkerEXT(0, "PPAPIContext");
141
142  return true;
143}
144
145void PPB_Graphics3D_Shared::DestroyGLES2Impl() {
146  gles2_impl_.reset();
147  transfer_buffer_.reset();
148  gles2_helper_.reset();
149}
150
151}  // namespace ppapi
152