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 "gpu/gles2_conform_support/egl/display.h" 6 7 #include <vector> 8 #include "base/bind.h" 9 #include "base/bind_helpers.h" 10 #include "gpu/command_buffer/client/gles2_implementation.h" 11 #include "gpu/command_buffer/client/gles2_lib.h" 12 #include "gpu/command_buffer/client/transfer_buffer.h" 13 #include "gpu/command_buffer/service/context_group.h" 14 #include "gpu/command_buffer/service/transfer_buffer_manager.h" 15 #include "gpu/gles2_conform_support/egl/config.h" 16 #include "gpu/gles2_conform_support/egl/surface.h" 17 18 namespace { 19 const int32 kCommandBufferSize = 1024 * 1024; 20 const int32 kTransferBufferSize = 512 * 1024; 21 } 22 23 namespace egl { 24 25 Display::Display(EGLNativeDisplayType display_id) 26 : display_id_(display_id), 27 is_initialized_(false), 28 create_offscreen_(false), 29 create_offscreen_width_(0), 30 create_offscreen_height_(0) { 31 } 32 33 Display::~Display() { 34 gles2::Terminate(); 35 } 36 37 bool Display::Initialize() { 38 gles2::Initialize(); 39 is_initialized_ = true; 40 return true; 41 } 42 43 bool Display::IsValidConfig(EGLConfig config) { 44 return (config != NULL) && (config == config_.get()); 45 } 46 47 bool Display::ChooseConfigs(EGLConfig* configs, 48 EGLint config_size, 49 EGLint* num_config) { 50 // TODO(alokp): Find out a way to find all configs. CommandBuffer currently 51 // does not support finding or choosing configs. 52 *num_config = 1; 53 if (configs != NULL) { 54 if (config_ == NULL) { 55 config_.reset(new Config); 56 } 57 configs[0] = config_.get(); 58 } 59 return true; 60 } 61 62 bool Display::GetConfigs(EGLConfig* configs, 63 EGLint config_size, 64 EGLint* num_config) { 65 // TODO(alokp): Find out a way to find all configs. CommandBuffer currently 66 // does not support finding or choosing configs. 67 *num_config = 1; 68 if (configs != NULL) { 69 if (config_ == NULL) { 70 config_.reset(new Config); 71 } 72 configs[0] = config_.get(); 73 } 74 return true; 75 } 76 77 bool Display::GetConfigAttrib(EGLConfig config, 78 EGLint attribute, 79 EGLint* value) { 80 const egl::Config* cfg = static_cast<egl::Config*>(config); 81 return cfg->GetAttrib(attribute, value); 82 } 83 84 bool Display::IsValidNativeWindow(EGLNativeWindowType win) { 85 #if defined OS_WIN 86 return ::IsWindow(win) != FALSE; 87 #else 88 // TODO(alokp): Validate window handle. 89 return true; 90 #endif // OS_WIN 91 } 92 93 bool Display::IsValidSurface(EGLSurface surface) { 94 return (surface != NULL) && (surface == surface_.get()); 95 } 96 97 EGLSurface Display::CreateWindowSurface(EGLConfig config, 98 EGLNativeWindowType win, 99 const EGLint* attrib_list) { 100 if (surface_ != NULL) { 101 // We do not support more than one window surface. 102 return EGL_NO_SURFACE; 103 } 104 105 { 106 gpu::TransferBufferManager* manager = new gpu::TransferBufferManager(); 107 transfer_buffer_manager_.reset(manager); 108 manager->Initialize(); 109 } 110 scoped_ptr<gpu::CommandBufferService> command_buffer( 111 new gpu::CommandBufferService(transfer_buffer_manager_.get())); 112 if (!command_buffer->Initialize()) 113 return NULL; 114 115 scoped_refptr<gpu::gles2::ContextGroup> group( 116 new gpu::gles2::ContextGroup(NULL, NULL, NULL, NULL, true)); 117 118 decoder_.reset(gpu::gles2::GLES2Decoder::Create(group.get())); 119 if (!decoder_.get()) 120 return EGL_NO_SURFACE; 121 122 gpu_scheduler_.reset(new gpu::GpuScheduler(command_buffer.get(), 123 decoder_.get(), 124 NULL)); 125 126 decoder_->set_engine(gpu_scheduler_.get()); 127 gfx::Size size(create_offscreen_width_, create_offscreen_height_); 128 if (create_offscreen_) { 129 gl_surface_ = gfx::GLSurface::CreateOffscreenGLSurface(size); 130 create_offscreen_ = false; 131 create_offscreen_width_ = 0; 132 create_offscreen_height_ = 0; 133 } else { 134 gl_surface_ = gfx::GLSurface::CreateViewGLSurface(win); 135 } 136 if (!gl_surface_.get()) 137 return EGL_NO_SURFACE; 138 139 gl_context_ = gfx::GLContext::CreateGLContext(NULL, 140 gl_surface_.get(), 141 gfx::PreferDiscreteGpu); 142 if (!gl_context_.get()) 143 return EGL_NO_SURFACE; 144 145 gl_context_->MakeCurrent(gl_surface_.get()); 146 147 EGLint depth_size = 0; 148 EGLint alpha_size = 0; 149 EGLint stencil_size = 0; 150 GetConfigAttrib(config, EGL_DEPTH_SIZE, &depth_size); 151 GetConfigAttrib(config, EGL_ALPHA_SIZE, &alpha_size); 152 GetConfigAttrib(config, EGL_STENCIL_SIZE, &stencil_size); 153 std::vector<int32> attribs; 154 attribs.push_back(EGL_DEPTH_SIZE); 155 attribs.push_back(depth_size); 156 attribs.push_back(EGL_ALPHA_SIZE); 157 attribs.push_back(alpha_size); 158 attribs.push_back(EGL_STENCIL_SIZE); 159 attribs.push_back(stencil_size); 160 // TODO(gman): Insert attrib_list. Although ES 1.1 says it must be null 161 attribs.push_back(EGL_NONE); 162 163 if (!decoder_->Initialize(gl_surface_.get(), 164 gl_context_.get(), 165 gl_surface_->IsOffscreen(), 166 size, 167 gpu::gles2::DisallowedFeatures(), 168 NULL, 169 attribs)) { 170 return EGL_NO_SURFACE; 171 } 172 173 command_buffer->SetPutOffsetChangeCallback( 174 base::Bind(&gpu::GpuScheduler::PutChanged, 175 base::Unretained(gpu_scheduler_.get()))); 176 command_buffer->SetGetBufferChangeCallback( 177 base::Bind(&gpu::GpuScheduler::SetGetBuffer, 178 base::Unretained(gpu_scheduler_.get()))); 179 180 scoped_ptr<gpu::gles2::GLES2CmdHelper> cmd_helper( 181 new gpu::gles2::GLES2CmdHelper(command_buffer.get())); 182 if (!cmd_helper->Initialize(kCommandBufferSize)) 183 return NULL; 184 185 scoped_ptr<gpu::TransferBuffer> transfer_buffer(new gpu::TransferBuffer( 186 cmd_helper.get())); 187 188 command_buffer_.reset(command_buffer.release()); 189 transfer_buffer_.reset(transfer_buffer.release()); 190 gles2_cmd_helper_.reset(cmd_helper.release()); 191 surface_.reset(new Surface(win)); 192 193 return surface_.get(); 194 } 195 196 void Display::DestroySurface(EGLSurface surface) { 197 DCHECK(IsValidSurface(surface)); 198 gpu_scheduler_.reset(); 199 if (decoder_.get()) { 200 decoder_->Destroy(true); 201 } 202 decoder_.reset(); 203 gl_surface_ = NULL; 204 gl_context_ = NULL; 205 surface_.reset(); 206 } 207 208 void Display::SwapBuffers(EGLSurface surface) { 209 DCHECK(IsValidSurface(surface)); 210 context_->SwapBuffers(); 211 } 212 213 bool Display::IsValidContext(EGLContext ctx) { 214 return (ctx != NULL) && (ctx == context_.get()); 215 } 216 217 EGLContext Display::CreateContext(EGLConfig config, 218 EGLContext share_ctx, 219 const EGLint* attrib_list) { 220 DCHECK(IsValidConfig(config)); 221 // TODO(alokp): Add support for shared contexts. 222 if (share_ctx != NULL) 223 return EGL_NO_CONTEXT; 224 225 DCHECK(command_buffer_ != NULL); 226 DCHECK(transfer_buffer_.get()); 227 context_.reset(new gpu::gles2::GLES2Implementation( 228 gles2_cmd_helper_.get(), 229 NULL, 230 transfer_buffer_.get(), 231 true, 232 NULL)); 233 234 if (!context_->Initialize( 235 kTransferBufferSize, 236 kTransferBufferSize / 2, 237 kTransferBufferSize * 2)) { 238 return EGL_NO_CONTEXT; 239 } 240 241 context_->EnableFeatureCHROMIUM("pepper3d_allow_buffers_on_multiple_targets"); 242 context_->EnableFeatureCHROMIUM("pepper3d_support_fixed_attribs"); 243 244 return context_.get(); 245 } 246 247 void Display::DestroyContext(EGLContext ctx) { 248 DCHECK(IsValidContext(ctx)); 249 context_.reset(); 250 transfer_buffer_.reset(); 251 } 252 253 bool Display::MakeCurrent(EGLSurface draw, EGLSurface read, EGLContext ctx) { 254 if (ctx == EGL_NO_CONTEXT) { 255 gles2::SetGLContext(NULL); 256 } else { 257 DCHECK(IsValidSurface(draw)); 258 DCHECK(IsValidSurface(read)); 259 DCHECK(IsValidContext(ctx)); 260 gles2::SetGLContext(context_.get()); 261 } 262 return true; 263 } 264 265 } // namespace egl 266
