| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "ui/gl/init/gl_initializer.h" |
| |
| #include "base/command_line.h" |
| #include "base/logging.h" |
| #include "base/path_service.h" |
| #include "base/threading/thread_restrictions.h" |
| #include "build/build_config.h" |
| #include "ui/gfx/switches.h" |
| #include "ui/gfx/x/x11.h" |
| #include "ui/gfx/x/x11_types.h" |
| #include "ui/gl/buildflags.h" |
| #include "ui/gl/gl_bindings.h" |
| #include "ui/gl/gl_egl_api_implementation.h" |
| #include "ui/gl/gl_gl_api_implementation.h" |
| #include "ui/gl/gl_glx_api_implementation.h" |
| #include "ui/gl/gl_surface_egl.h" |
| #include "ui/gl/gl_surface_glx.h" |
| #include "ui/gl/gl_switches.h" |
| |
| namespace gl { |
| namespace init { |
| |
| namespace { |
| |
| #if defined(OS_OPENBSD) |
| const char kGLLibraryName[] = "libGL.so"; |
| #else |
| const char kGLLibraryName[] = "libGL.so.1"; |
| #endif |
| |
| const char kGLESv2LibraryName[] = "libGLESv2.so.2"; |
| const char kEGLLibraryName[] = "libEGL.so.1"; |
| |
| const char kGLESv2ANGLELibraryName[] = "libGLESv2.so"; |
| const char kEGLANGLELibraryName[] = "libEGL.so"; |
| |
| #if BUILDFLAG(ENABLE_SWIFTSHADER) |
| const char kGLESv2SwiftShaderLibraryName[] = "libGLESv2.so"; |
| const char kEGLSwiftShaderLibraryName[] = "libEGL.so"; |
| #endif |
| |
| bool InitializeStaticGLXInternal() { |
| base::NativeLibrary library = NULL; |
| const base::CommandLine* command_line = |
| base::CommandLine::ForCurrentProcess(); |
| |
| if (command_line->HasSwitch(switches::kTestGLLib)) |
| library = LoadLibraryAndPrintError( |
| command_line->GetSwitchValueASCII(switches::kTestGLLib).c_str()); |
| |
| if (!library) { |
| library = LoadLibraryAndPrintError(kGLLibraryName); |
| } |
| |
| if (!library) |
| return false; |
| |
| GLGetProcAddressProc get_proc_address = |
| reinterpret_cast<GLGetProcAddressProc>( |
| base::GetFunctionPointerFromNativeLibrary(library, |
| "glXGetProcAddress")); |
| if (!get_proc_address) { |
| LOG(ERROR) << "glxGetProcAddress not found."; |
| base::UnloadNativeLibrary(library); |
| return false; |
| } |
| |
| SetGLGetProcAddressProc(get_proc_address); |
| AddGLNativeLibrary(library); |
| SetGLImplementation(kGLImplementationDesktopGL); |
| |
| InitializeStaticGLBindingsGL(); |
| InitializeStaticGLBindingsGLX(); |
| |
| return true; |
| } |
| |
| bool InitializeStaticEGLInternal(GLImplementation implementation) { |
| base::FilePath glesv2_path(kGLESv2LibraryName); |
| base::FilePath egl_path(kEGLLibraryName); |
| |
| if (implementation == kGLImplementationSwiftShaderGL) { |
| #if BUILDFLAG(ENABLE_SWIFTSHADER) |
| base::FilePath module_path; |
| if (!base::PathService::Get(base::DIR_MODULE, &module_path)) |
| return false; |
| module_path = module_path.Append("swiftshader/"); |
| |
| glesv2_path = module_path.Append(kGLESv2SwiftShaderLibraryName); |
| egl_path = module_path.Append(kEGLSwiftShaderLibraryName); |
| #else |
| return false; |
| #endif |
| } else if (implementation == kGLImplementationEGLANGLE) { |
| base::FilePath module_path; |
| if (!base::PathService::Get(base::DIR_MODULE, &module_path)) |
| return false; |
| |
| glesv2_path = module_path.Append(kGLESv2ANGLELibraryName); |
| egl_path = module_path.Append(kEGLANGLELibraryName); |
| } |
| |
| base::NativeLibrary gles_library = LoadLibraryAndPrintError(glesv2_path); |
| if (!gles_library) |
| return false; |
| base::NativeLibrary egl_library = LoadLibraryAndPrintError(egl_path); |
| if (!egl_library) { |
| base::UnloadNativeLibrary(gles_library); |
| return false; |
| } |
| |
| GLGetProcAddressProc get_proc_address = |
| reinterpret_cast<GLGetProcAddressProc>( |
| base::GetFunctionPointerFromNativeLibrary(egl_library, |
| "eglGetProcAddress")); |
| if (!get_proc_address) { |
| LOG(ERROR) << "eglGetProcAddress not found."; |
| base::UnloadNativeLibrary(egl_library); |
| base::UnloadNativeLibrary(gles_library); |
| return false; |
| } |
| |
| SetGLGetProcAddressProc(get_proc_address); |
| AddGLNativeLibrary(egl_library); |
| AddGLNativeLibrary(gles_library); |
| if (implementation == kGLImplementationEGLANGLE) { |
| SetGLImplementation(kGLImplementationEGLANGLE); |
| } else { |
| SetGLImplementation(kGLImplementationEGLGLES2); |
| } |
| |
| InitializeStaticGLBindingsGL(); |
| InitializeStaticGLBindingsEGL(); |
| |
| return true; |
| } |
| |
| } // namespace |
| |
| #if !defined(TOOLKIT_QT) |
| bool InitializeGLOneOffPlatform() { |
| switch (GetGLImplementation()) { |
| case kGLImplementationDesktopGL: |
| if (!GLSurfaceGLX::InitializeOneOff()) { |
| LOG(ERROR) << "GLSurfaceGLX::InitializeOneOff failed."; |
| return false; |
| } |
| return true; |
| case kGLImplementationSwiftShaderGL: |
| case kGLImplementationEGLGLES2: |
| case kGLImplementationEGLANGLE: |
| if (!GLSurfaceEGL::InitializeOneOff(gfx::GetXDisplay())) { |
| LOG(ERROR) << "GLSurfaceEGL::InitializeOneOff failed."; |
| return false; |
| } |
| return true; |
| default: |
| return true; |
| } |
| } |
| |
| bool InitializeStaticGLBindings(GLImplementation implementation) { |
| // Prevent reinitialization with a different implementation. Once the gpu |
| // unit tests have initialized with kGLImplementationMock, we don't want to |
| // later switch to another GL implementation. |
| DCHECK_EQ(kGLImplementationNone, GetGLImplementation()); |
| |
| // Allow the main thread or another to initialize these bindings |
| // after instituting restrictions on I/O. Going forward they will |
| // likely be used in the browser process on most platforms. The |
| // one-time initialization cost is small, between 2 and 5 ms. |
| base::ThreadRestrictions::ScopedAllowIO allow_io; |
| |
| switch (implementation) { |
| case kGLImplementationDesktopGL: |
| return InitializeStaticGLXInternal(); |
| case kGLImplementationSwiftShaderGL: |
| case kGLImplementationEGLGLES2: |
| case kGLImplementationEGLANGLE: |
| return InitializeStaticEGLInternal(implementation); |
| case kGLImplementationMockGL: |
| case kGLImplementationStubGL: |
| SetGLImplementation(implementation); |
| InitializeStaticGLBindingsGL(); |
| return true; |
| default: |
| NOTREACHED(); |
| } |
| |
| return false; |
| } |
| #endif // !defined(TOOLKIT_QT) |
| |
| void InitializeLogGLBindings() { |
| InitializeLogGLBindingsEGL(); |
| InitializeLogGLBindingsGL(); |
| InitializeLogGLBindingsGLX(); |
| } |
| |
| void ShutdownGLPlatform() { |
| GLSurfaceEGL::ShutdownOneOff(); |
| GLSurfaceGLX::ShutdownOneOff(); |
| ClearBindingsEGL(); |
| ClearBindingsGL(); |
| ClearBindingsGLX(); |
| } |
| |
| } // namespace init |
| } // namespace gl |