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 PPB_Graphics3D_Shared::PPB_Graphics3D_Shared(const HostResource& host_resource)
  19     : Resource(OBJECT_IS_PROXY, host_resource) {}
  20
  21 PPB_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
  28 thunk::PPB_Graphics3D_API* PPB_Graphics3D_Shared::AsPPB_Graphics3D_API() {
  29   return this;
  30 }
  31
  32 int32_t PPB_Graphics3D_Shared::GetAttribs(int32_t attrib_list[]) {
  33   // TODO(alokp): Implement me.
  34   return PP_ERROR_FAILED;
  35 }
  36
  37 int32_t PPB_Graphics3D_Shared::SetAttribs(const int32_t attrib_list[]) {
  38   // TODO(alokp): Implement me.
  39   return PP_ERROR_FAILED;
  40 }
  41
  42 int32_t PPB_Graphics3D_Shared::GetError() {
  43   // TODO(alokp): Implement me.
  44   return PP_ERROR_FAILED;
  45 }
  46
  47 int32_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
  56 int32_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
  70 int32_t PPB_Graphics3D_Shared::GetAttribMaxValue(int32_t attribute,
  71                                                  int32_t* value) {
  72   // TODO(alokp): Implement me.
  73   return PP_ERROR_FAILED;
  74 }
  75
  76 void* 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
  89 void PPB_Graphics3D_Shared::UnmapTexSubImage2DCHROMIUM(const void* mem) {
  90   gles2_impl_->UnmapTexSubImage2DCHROMIUM(mem);
  91 }
  92
  93 void PPB_Graphics3D_Shared::SwapBuffersACK(int32_t pp_error) {
  94   DCHECK(HasPendingSwap());
  95   swap_callback_->Run(pp_error);
  96 }
  97
  98 bool PPB_Graphics3D_Shared::HasPendingSwap() const {
  99   return TrackedCallback::IsPending(swap_callback_);
 100 }
 101
 102 bool 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
 145 void PPB_Graphics3D_Shared::DestroyGLES2Impl() {
 146   gles2_impl_.reset();
 147   transfer_buffer_.reset();
 148   gles2_helper_.reset();
 149 }
 150
 151 }  // namespace ppapi