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| 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 <vector> | |
| 6 | |
| 7 #include "base/at_exit.h" | |
| 8 #include "base/base_paths.h" | |
| 9 #include "base/bind.h" | |
| 10 #include "base/command_line.h" | |
| 11 #include "base/files/file_path.h" | |
| 12 #include "base/lazy_instance.h" | |
| 13 #include "base/logging.h" | |
| 14 #include "base/native_library.h" | |
| 15 #include "base/path_service.h" | |
| 16 #include "base/strings/stringprintf.h" | |
| 17 #include "base/threading/thread_restrictions.h" | |
| 18 #include "base/trace_event/trace_event.h" | |
| 19 #include "base/win/windows_version.h" | |
| 20 // TODO(jmadill): Apply to all platforms eventually | |
| 21 #include "ui/gl/angle_platform_impl.h" | |
| 22 #include "ui/gl/gl_bindings.h" | |
| 23 #include "ui/gl/gl_context_stub_with_extensions.h" | |
| 24 #include "ui/gl/gl_egl_api_implementation.h" | |
| 25 #include "ui/gl/gl_gl_api_implementation.h" | |
| 26 #include "ui/gl/gl_implementation.h" | |
| 27 #include "ui/gl/gl_osmesa_api_implementation.h" | |
| 28 #include "ui/gl/gl_surface_wgl.h" | |
| 29 #include "ui/gl/gl_wgl_api_implementation.h" | |
| 30 | |
| 31 #if defined(ENABLE_SWIFTSHADER) | |
| 32 #include "software_renderer.h" | |
| 33 #endif | |
| 34 | |
| 35 namespace gfx { | |
| 36 | |
| 37 namespace { | |
| 38 | |
| 39 const wchar_t kD3DCompiler[] = L"D3DCompiler_47.dll"; | |
| 40 | |
| 41 void GL_BINDING_CALL MarshalClearDepthToClearDepthf(GLclampd depth) { | |
| 42 glClearDepthf(static_cast<GLclampf>(depth)); | |
| 43 } | |
| 44 | |
| 45 void GL_BINDING_CALL MarshalDepthRangeToDepthRangef(GLclampd z_near, | |
| 46 GLclampd z_far) { | |
| 47 glDepthRangef(static_cast<GLclampf>(z_near), static_cast<GLclampf>(z_far)); | |
| 48 } | |
| 49 | |
| 50 bool LoadD3DXLibrary(const base::FilePath& module_path, | |
| 51 const base::FilePath::StringType& name) { | |
| 52 base::NativeLibrary library = | |
| 53 base::LoadNativeLibrary(base::FilePath(name), NULL); | |
| 54 if (!library) { | |
| 55 library = base::LoadNativeLibrary(module_path.Append(name), NULL); | |
| 56 if (!library) { | |
| 57 DVLOG(1) << name << " not found."; | |
| 58 return false; | |
| 59 } | |
| 60 } | |
| 61 return true; | |
| 62 } | |
| 63 | |
| 64 const unsigned char* AngleGetTraceCategoryEnabledFlag(const char* name) { | |
| 65 return TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED(name); | |
| 66 } | |
| 67 | |
| 68 void AngleAddTraceEvent(char phase, | |
| 69 const unsigned char* category_group_enabled, | |
| 70 const char* name, | |
| 71 unsigned long long id, | |
| 72 int num_args, | |
| 73 const char** arg_names, | |
| 74 const unsigned char* arg_types, | |
| 75 const unsigned long long* arg_values, | |
| 76 unsigned char flags) { | |
| 77 TRACE_EVENT_API_ADD_TRACE_EVENT(phase, | |
| 78 category_group_enabled, | |
| 79 name, | |
| 80 id, | |
| 81 num_args, | |
| 82 arg_names, | |
| 83 arg_types, | |
| 84 arg_values, | |
| 85 NULL, | |
| 86 flags); | |
| 87 } | |
| 88 | |
| 89 typedef const unsigned char* (*GetCategoryEnabledFlagFunc)(const char* name); | |
| 90 typedef void (*AddTraceEventFunc)(char phase, | |
| 91 const unsigned char* categoryGroupEnabled, | |
| 92 const char* name, | |
| 93 unsigned long long id, | |
| 94 int numArgs, | |
| 95 const char** argNames, | |
| 96 const unsigned char* argTypes, | |
| 97 const unsigned long long* argValues, | |
| 98 unsigned char flags); | |
| 99 typedef void (__stdcall *SetTraceFunctionPointersFunc)( | |
| 100 GetCategoryEnabledFlagFunc get_category_enabled_flag, | |
| 101 AddTraceEventFunc add_trace_event_func); | |
| 102 | |
| 103 // TODO(jmadill): Apply to all platforms eventually | |
| 104 base::LazyInstance<ANGLEPlatformImpl> g_angle_platform_impl = | |
| 105 LAZY_INSTANCE_INITIALIZER; | |
| 106 | |
| 107 ANGLEPlatformShutdownFunc g_angle_platform_shutdown = nullptr; | |
| 108 | |
| 109 } // namespace | |
| 110 | |
| 111 void GetAllowedGLImplementations(std::vector<GLImplementation>* impls) { | |
| 112 impls->push_back(kGLImplementationEGLGLES2); | |
| 113 impls->push_back(kGLImplementationDesktopGL); | |
| 114 impls->push_back(kGLImplementationOSMesaGL); | |
| 115 } | |
| 116 | |
| 117 bool InitializeStaticGLBindings(GLImplementation implementation) { | |
| 118 // Prevent reinitialization with a different implementation. Once the gpu | |
| 119 // unit tests have initialized with kGLImplementationMock, we don't want to | |
| 120 // later switch to another GL implementation. | |
| 121 DCHECK_EQ(kGLImplementationNone, GetGLImplementation()); | |
| 122 | |
| 123 // Allow the main thread or another to initialize these bindings | |
| 124 // after instituting restrictions on I/O. Going forward they will | |
| 125 // likely be used in the browser process on most platforms. The | |
| 126 // one-time initialization cost is small, between 2 and 5 ms. | |
| 127 base::ThreadRestrictions::ScopedAllowIO allow_io; | |
| 128 | |
| 129 switch (implementation) { | |
| 130 case kGLImplementationOSMesaGL: { | |
| 131 base::FilePath module_path; | |
| 132 if (!PathService::Get(base::DIR_MODULE, &module_path)) { | |
| 133 LOG(ERROR) << "PathService::Get failed."; | |
| 134 return false; | |
| 135 } | |
| 136 | |
| 137 base::NativeLibrary library = base::LoadNativeLibrary( | |
| 138 module_path.Append(L"osmesa.dll"), NULL); | |
| 139 if (!library) { | |
| 140 DVLOG(1) << "osmesa.dll not found"; | |
| 141 return false; | |
| 142 } | |
| 143 | |
| 144 GLGetProcAddressProc get_proc_address = | |
| 145 reinterpret_cast<GLGetProcAddressProc>( | |
| 146 base::GetFunctionPointerFromNativeLibrary( | |
| 147 library, "OSMesaGetProcAddress")); | |
| 148 if (!get_proc_address) { | |
| 149 DLOG(ERROR) << "OSMesaGetProcAddress not found."; | |
| 150 base::UnloadNativeLibrary(library); | |
| 151 return false; | |
| 152 } | |
| 153 | |
| 154 SetGLGetProcAddressProc(get_proc_address); | |
| 155 AddGLNativeLibrary(library); | |
| 156 SetGLImplementation(kGLImplementationOSMesaGL); | |
| 157 | |
| 158 InitializeStaticGLBindingsGL(); | |
| 159 InitializeStaticGLBindingsOSMESA(); | |
| 160 break; | |
| 161 } | |
| 162 case kGLImplementationEGLGLES2: { | |
| 163 base::FilePath module_path; | |
| 164 if (!PathService::Get(base::DIR_MODULE, &module_path)) | |
| 165 return false; | |
| 166 | |
| 167 // Attempt to load the D3DX shader compiler using the default search path | |
| 168 // and if that fails, using an absolute path. This is to ensure these DLLs | |
| 169 // are loaded before ANGLE is loaded in case they are not in the default | |
| 170 // search path. | |
| 171 LoadD3DXLibrary(module_path, kD3DCompiler); | |
| 172 | |
| 173 base::FilePath gles_path; | |
| 174 const base::CommandLine* command_line = | |
| 175 base::CommandLine::ForCurrentProcess(); | |
| 176 bool using_swift_shader = | |
| 177 command_line->GetSwitchValueASCII(switches::kUseGL) == "swiftshader"; | |
| 178 if (using_swift_shader) { | |
| 179 if (!command_line->HasSwitch(switches::kSwiftShaderPath)) | |
| 180 return false; | |
| 181 gles_path = | |
| 182 command_line->GetSwitchValuePath(switches::kSwiftShaderPath); | |
| 183 // Preload library | |
| 184 LoadLibrary(L"ddraw.dll"); | |
| 185 } else { | |
| 186 gles_path = module_path; | |
| 187 } | |
| 188 | |
| 189 // Load libglesv2.dll before libegl.dll because the latter is dependent on | |
| 190 // the former and if there is another version of libglesv2.dll in the dll | |
| 191 // search path, it will get loaded instead. | |
| 192 base::NativeLibrary gles_library = base::LoadNativeLibrary( | |
| 193 gles_path.Append(L"libglesv2.dll"), NULL); | |
| 194 if (!gles_library) { | |
| 195 DVLOG(1) << "libglesv2.dll not found"; | |
| 196 return false; | |
| 197 } | |
| 198 | |
| 199 // When using EGL, first try eglGetProcAddress and then Windows | |
| 200 // GetProcAddress on both the EGL and GLES2 DLLs. | |
| 201 base::NativeLibrary egl_library = base::LoadNativeLibrary( | |
| 202 gles_path.Append(L"libegl.dll"), NULL); | |
| 203 if (!egl_library) { | |
| 204 DVLOG(1) << "libegl.dll not found."; | |
| 205 base::UnloadNativeLibrary(gles_library); | |
| 206 return false; | |
| 207 } | |
| 208 | |
| 209 #if defined(ENABLE_SWIFTSHADER) | |
| 210 if (using_swift_shader) { | |
| 211 SetupSoftwareRenderer(gles_library); | |
| 212 } | |
| 213 #endif | |
| 214 | |
| 215 if (!using_swift_shader) { | |
| 216 // TODO(jmadill): remove when platform impl supports tracing | |
| 217 SetTraceFunctionPointersFunc set_trace_function_pointers = | |
| 218 reinterpret_cast<SetTraceFunctionPointersFunc>( | |
| 219 base::GetFunctionPointerFromNativeLibrary( | |
| 220 gles_library, "SetTraceFunctionPointers")); | |
| 221 if (set_trace_function_pointers) { | |
| 222 set_trace_function_pointers(&AngleGetTraceCategoryEnabledFlag, | |
| 223 &AngleAddTraceEvent); | |
| 224 } | |
| 225 | |
| 226 // Init ANGLE platform here, before we call GetPlatformDisplay(). | |
| 227 // TODO(jmadill): Apply to all platforms eventually | |
| 228 ANGLEPlatformInitializeFunc angle_platform_init = | |
| 229 reinterpret_cast<ANGLEPlatformInitializeFunc>( | |
| 230 base::GetFunctionPointerFromNativeLibrary( | |
| 231 gles_library, | |
| 232 "ANGLEPlatformInitialize")); | |
| 233 if (angle_platform_init) { | |
| 234 angle_platform_init(&g_angle_platform_impl.Get()); | |
| 235 | |
| 236 g_angle_platform_shutdown = | |
| 237 reinterpret_cast<ANGLEPlatformShutdownFunc>( | |
| 238 base::GetFunctionPointerFromNativeLibrary( | |
| 239 gles_library, | |
| 240 "ANGLEPlatformShutdown")); | |
| 241 } | |
| 242 } | |
| 243 | |
| 244 GLGetProcAddressProc get_proc_address = | |
| 245 reinterpret_cast<GLGetProcAddressProc>( | |
| 246 base::GetFunctionPointerFromNativeLibrary( | |
| 247 egl_library, "eglGetProcAddress")); | |
| 248 if (!get_proc_address) { | |
| 249 LOG(ERROR) << "eglGetProcAddress not found."; | |
| 250 base::UnloadNativeLibrary(egl_library); | |
| 251 base::UnloadNativeLibrary(gles_library); | |
| 252 return false; | |
| 253 } | |
| 254 | |
| 255 SetGLGetProcAddressProc(get_proc_address); | |
| 256 AddGLNativeLibrary(egl_library); | |
| 257 AddGLNativeLibrary(gles_library); | |
| 258 SetGLImplementation(kGLImplementationEGLGLES2); | |
| 259 | |
| 260 InitializeStaticGLBindingsGL(); | |
| 261 InitializeStaticGLBindingsEGL(); | |
| 262 | |
| 263 // These two functions take single precision float rather than double | |
| 264 // precision float parameters in GLES. | |
| 265 ::gfx::g_driver_gl.fn.glClearDepthFn = MarshalClearDepthToClearDepthf; | |
| 266 ::gfx::g_driver_gl.fn.glDepthRangeFn = MarshalDepthRangeToDepthRangef; | |
| 267 break; | |
| 268 } | |
| 269 case kGLImplementationDesktopGL: { | |
| 270 base::NativeLibrary library = base::LoadNativeLibrary( | |
| 271 base::FilePath(L"opengl32.dll"), NULL); | |
| 272 if (!library) { | |
| 273 DVLOG(1) << "opengl32.dll not found"; | |
| 274 return false; | |
| 275 } | |
| 276 | |
| 277 GLGetProcAddressProc get_proc_address = | |
| 278 reinterpret_cast<GLGetProcAddressProc>( | |
| 279 base::GetFunctionPointerFromNativeLibrary( | |
| 280 library, "wglGetProcAddress")); | |
| 281 if (!get_proc_address) { | |
| 282 LOG(ERROR) << "wglGetProcAddress not found."; | |
| 283 base::UnloadNativeLibrary(library); | |
| 284 return false; | |
| 285 } | |
| 286 | |
| 287 SetGLGetProcAddressProc(get_proc_address); | |
| 288 AddGLNativeLibrary(library); | |
| 289 SetGLImplementation(kGLImplementationDesktopGL); | |
| 290 | |
| 291 // Initialize GL surface and get some functions needed for the context | |
| 292 // creation below. | |
| 293 if (!GLSurfaceWGL::InitializeOneOff()) { | |
| 294 LOG(ERROR) << "GLSurfaceWGL::InitializeOneOff failed."; | |
| 295 return false; | |
| 296 } | |
| 297 wglCreateContextProc wglCreateContextFn = | |
| 298 reinterpret_cast<wglCreateContextProc>( | |
| 299 GetGLProcAddress("wglCreateContext")); | |
| 300 wglDeleteContextProc wglDeleteContextFn = | |
| 301 reinterpret_cast<wglDeleteContextProc>( | |
| 302 GetGLProcAddress("wglDeleteContext")); | |
| 303 wglMakeCurrentProc wglMakeCurrentFn = | |
| 304 reinterpret_cast<wglMakeCurrentProc>( | |
| 305 GetGLProcAddress("wglMakeCurrent")); | |
| 306 | |
| 307 // Create a temporary GL context to bind to entry points. This is needed | |
| 308 // because wglGetProcAddress is specified to return NULL for all queries | |
| 309 // if a context is not current in MSDN documentation, and the static | |
| 310 // bindings may contain functions that need to be queried with | |
| 311 // wglGetProcAddress. OpenGL wiki further warns that other error values | |
| 312 // than NULL could also be returned from wglGetProcAddress on some | |
| 313 // implementations, so we need to clear the WGL bindings and reinitialize | |
| 314 // them after the context creation. | |
| 315 HGLRC gl_context = wglCreateContextFn(GLSurfaceWGL::GetDisplayDC()); | |
| 316 if (!gl_context) { | |
| 317 LOG(ERROR) << "Failed to create temporary context."; | |
| 318 return false; | |
| 319 } | |
| 320 if (!wglMakeCurrentFn(GLSurfaceWGL::GetDisplayDC(), gl_context)) { | |
| 321 LOG(ERROR) << "Failed to make temporary GL context current."; | |
| 322 wglDeleteContextFn(gl_context); | |
| 323 return false; | |
| 324 } | |
| 325 | |
| 326 InitializeStaticGLBindingsGL(); | |
| 327 InitializeStaticGLBindingsWGL(); | |
| 328 | |
| 329 wglMakeCurrent(NULL, NULL); | |
| 330 wglDeleteContext(gl_context); | |
| 331 | |
| 332 break; | |
| 333 } | |
| 334 case kGLImplementationMockGL: { | |
| 335 SetGLImplementation(kGLImplementationMockGL); | |
| 336 InitializeStaticGLBindingsGL(); | |
| 337 break; | |
| 338 } | |
| 339 default: | |
| 340 return false; | |
| 341 } | |
| 342 | |
| 343 return true; | |
| 344 } | |
| 345 | |
| 346 bool InitializeDynamicGLBindings(GLImplementation implementation, | |
| 347 GLContext* context) { | |
| 348 switch (implementation) { | |
| 349 case kGLImplementationOSMesaGL: | |
| 350 case kGLImplementationEGLGLES2: | |
| 351 case kGLImplementationDesktopGL: | |
| 352 InitializeDynamicGLBindingsGL(context); | |
| 353 break; | |
| 354 case kGLImplementationMockGL: | |
| 355 if (!context) { | |
| 356 scoped_refptr<GLContextStubWithExtensions> mock_context( | |
| 357 new GLContextStubWithExtensions()); | |
| 358 mock_context->SetGLVersionString("3.0"); | |
| 359 InitializeDynamicGLBindingsGL(mock_context.get()); | |
| 360 } else | |
| 361 InitializeDynamicGLBindingsGL(context); | |
| 362 break; | |
| 363 default: | |
| 364 return false; | |
| 365 } | |
| 366 | |
| 367 return true; | |
| 368 } | |
| 369 | |
| 370 void InitializeDebugGLBindings() { | |
| 371 InitializeDebugGLBindingsEGL(); | |
| 372 InitializeDebugGLBindingsGL(); | |
| 373 InitializeDebugGLBindingsOSMESA(); | |
| 374 InitializeDebugGLBindingsWGL(); | |
| 375 } | |
| 376 | |
| 377 void ClearGLBindings() { | |
| 378 // TODO(jmadill): Apply to all platforms eventually | |
| 379 if (g_angle_platform_shutdown) { | |
| 380 g_angle_platform_shutdown(); | |
| 381 } | |
| 382 | |
| 383 ClearGLBindingsEGL(); | |
| 384 ClearGLBindingsGL(); | |
| 385 ClearGLBindingsOSMESA(); | |
| 386 ClearGLBindingsWGL(); | |
| 387 SetGLImplementation(kGLImplementationNone); | |
| 388 UnloadGLNativeLibraries(); | |
| 389 } | |
| 390 | |
| 391 bool GetGLWindowSystemBindingInfo(GLWindowSystemBindingInfo* info) { | |
| 392 switch (GetGLImplementation()) { | |
| 393 case kGLImplementationDesktopGL: | |
| 394 return GetGLWindowSystemBindingInfoWGL(info); | |
| 395 case kGLImplementationEGLGLES2: | |
| 396 return GetGLWindowSystemBindingInfoEGL(info); | |
| 397 default: | |
| 398 return false; | |
| 399 } | |
| 400 } | |
| 401 | |
| 402 } // namespace gfx | |
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Chromium Code Reviews
Issue 1061733002:
Remove windows/mac/ios specific code from //ui (Closed)
Base URL: git@github.com:domokit/mojo.git@master