ppapi/shared_impl/ppb_graphics_3d_shared.cc

   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
  13 namespace ppapi {
  14
  15 PPB_Graphics3D_Shared::PPB_Graphics3D_Shared(PP_Instance instance)
  16     : Resource(OBJECT_IS_IMPL, instance) {
  17 }
  18
  19 PPB_Graphics3D_Shared::PPB_Graphics3D_Shared(const HostResource& host_resource)
  20     : Resource(OBJECT_IS_PROXY, host_resource) {
  21 }
  22
  23 PPB_Graphics3D_Shared::~PPB_Graphics3D_Shared() {
  24   // Make sure that GLES2 implementation has already been destroyed.
  25   DCHECK(!gles2_helper_.get());
  26   DCHECK(!transfer_buffer_.get());
  27   DCHECK(!gles2_impl_.get());
  28 }
  29
  30 thunk::PPB_Graphics3D_API* PPB_Graphics3D_Shared::AsPPB_Graphics3D_API() {
  31   return this;
  32 }
  33
  34 int32_t PPB_Graphics3D_Shared::GetAttribs(int32_t attrib_list[]) {
  35   // TODO(alokp): Implement me.
  36   return PP_ERROR_FAILED;
  37 }
  38
  39 int32_t PPB_Graphics3D_Shared::SetAttribs(const int32_t attrib_list[]) {
  40   // TODO(alokp): Implement me.
  41   return PP_ERROR_FAILED;
  42 }
  43
  44 int32_t PPB_Graphics3D_Shared::GetError() {
  45   // TODO(alokp): Implement me.
  46   return PP_ERROR_FAILED;
  47 }
  48
  49 int32_t PPB_Graphics3D_Shared::ResizeBuffers(int32_t width, int32_t height) {
  50   if ((width < 0) || (height < 0))
  51     return PP_ERROR_BADARGUMENT;
  52
  53   ScopedNoLocking already_locked(this);
  54   gles2_impl()->ResizeCHROMIUM(width, height, 1.f);
  55   // TODO(alokp): Check if resize succeeded and return appropriate error code.
  56   return PP_OK;
  57 }
  58
  59 int32_t PPB_Graphics3D_Shared::SwapBuffers(
  60     scoped_refptr<TrackedCallback> callback) {
  61   ScopedNoLocking already_locked(this);
  62   if (HasPendingSwap()) {
  63     Log(PP_LOGLEVEL_ERROR, "PPB_Graphics3D.SwapBuffers: Plugin attempted swap "
  64                            "with previous swap still pending.");
  65     // Already a pending SwapBuffers that hasn't returned yet.
  66     return PP_ERROR_INPROGRESS;
  67   }
  68
  69   swap_callback_ = callback;
  70   return DoSwapBuffers();
  71 }
  72
  73 int32_t PPB_Graphics3D_Shared::GetAttribMaxValue(int32_t attribute,
  74                                                  int32_t* value) {
  75   // TODO(alokp): Implement me.
  76   return PP_ERROR_FAILED;
  77 }
  78
  79 void* PPB_Graphics3D_Shared::MapTexSubImage2DCHROMIUM(GLenum target,
  80                                                       GLint level,
  81                                                       GLint xoffset,
  82                                                       GLint yoffset,
  83                                                       GLsizei width,
  84                                                       GLsizei height,
  85                                                       GLenum format,
  86                                                       GLenum type,
  87                                                       GLenum access) {
  88   ScopedNoLocking already_locked(this);
  89   return gles2_impl_->MapTexSubImage2DCHROMIUM(
  90       target, level, xoffset, yoffset, width, height, format, type, access);
  91 }
  92
  93 void PPB_Graphics3D_Shared::UnmapTexSubImage2DCHROMIUM(const void* mem) {
  94   ScopedNoLocking already_locked(this);
  95   gles2_impl_->UnmapTexSubImage2DCHROMIUM(mem);
  96 }
  97
  98 void PPB_Graphics3D_Shared::SwapBuffersACK(int32_t pp_error) {
  99   DCHECK(HasPendingSwap());
 100   swap_callback_->Run(pp_error);
 101 }
 102
 103 bool PPB_Graphics3D_Shared::HasPendingSwap() const {
 104   return TrackedCallback::IsPending(swap_callback_);
 105 }
 106
 107 bool PPB_Graphics3D_Shared::CreateGLES2Impl(
 108     int32 command_buffer_size,
 109     int32 transfer_buffer_size,
 110     gpu::gles2::GLES2Implementation* share_gles2) {
 111   ScopedNoLocking already_locked(this);
 112   gpu::CommandBuffer* command_buffer = GetCommandBuffer();
 113   DCHECK(command_buffer);
 114
 115   // Create the GLES2 helper, which writes the command buffer protocol.
 116   gles2_helper_.reset(new gpu::gles2::GLES2CmdHelper(command_buffer));
 117   if (!gles2_helper_->Initialize(command_buffer_size))
 118     return false;
 119
 120   // Create a transfer buffer used to copy resources between the renderer
 121   // process and the GPU process.
 122   const int32 kMinTransferBufferSize = 256 * 1024;
 123   const int32 kMaxTransferBufferSize = 16 * 1024 * 1024;
 124   transfer_buffer_.reset(new gpu::TransferBuffer(gles2_helper_.get()));
 125
 126   // Create the object exposing the OpenGL API.
 127   gles2_impl_.reset(new gpu::gles2::GLES2Implementation(
 128       gles2_helper_.get(),
 129       share_gles2 ? share_gles2->share_group() : NULL,
 130       transfer_buffer_.get(),
 131       false,
 132       true,
 133       NULL  // Do not use GpuMemoryBuffers.
 134       ));
 135
 136   if (!gles2_impl_->Initialize(
 137       transfer_buffer_size,
 138       kMinTransferBufferSize,
 139       std::max(kMaxTransferBufferSize, transfer_buffer_size))) {
 140     return false;
 141   }
 142
 143   gles2_impl_->PushGroupMarkerEXT(0, "PPAPIContext");
 144
 145   return true;
 146 }
 147
 148 void PPB_Graphics3D_Shared::DestroyGLES2Impl() {
 149   ScopedNoLocking already_locked(this);
 150   gles2_impl_.reset();
 151   transfer_buffer_.reset();
 152   gles2_helper_.reset();
 153 }
 154
 155 void PPB_Graphics3D_Shared::PushAlreadyLocked() {
 156   // Do nothing. This should be overridden in the plugin side.
 157 }
 158
 159 void PPB_Graphics3D_Shared::PopAlreadyLocked() {
 160   // Do nothing. This should be overridden in the plugin side.
 161 }
 162
 163 }  // namespace ppapi
 164