| // Copyright 2016 The Chromium Authors |
| // 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/apple/bundle_locations.h" |
| #include "base/apple/foundation_util.h" |
| #include "base/base_paths.h" |
| #include "base/files/file_path.h" |
| #include "base/logging.h" |
| #include "base/native_library.h" |
| #include "base/path_service.h" |
| #include "base/threading/thread_restrictions.h" |
| #include "ui/gl/gl_bindings.h" |
| #include "ui/gl/gl_context.h" |
| #include "ui/gl/gl_display.h" |
| #include "ui/gl/gl_gl_api_implementation.h" |
| #include "ui/gl/gl_implementation.h" |
| #include "ui/gl/gl_surface.h" |
| #include "ui/gl/gl_utils.h" |
| #include "ui/gl/gpu_switching_manager.h" |
| #include "ui/gl/init/gl_display_initializer.h" |
| |
| #if defined(USE_EGL) |
| #include "ui/gl/gl_egl_api_implementation.h" |
| #endif // defined(USE_EGL) |
| |
| namespace gl { |
| namespace init { |
| |
| namespace { |
| |
| #if defined(USE_EGL) |
| const char kGLESv2ANGLELibraryName[] = "libGLESv2.dylib"; |
| const char kEGLANGLELibraryName[] = "libEGL.dylib"; |
| |
| bool InitializeStaticEGLInternalFromLibrary(GLImplementation implementation) { |
| #if BUILDFLAG(USE_STATIC_ANGLE) |
| NOTREACHED(); |
| #endif |
| |
| // Some unit test targets depend on Angle/SwiftShader but aren't built |
| // as app bundles. In that case, the .dylib is next to the executable. |
| base::FilePath base_dir; |
| if (base::apple::AmIBundled()) { |
| base_dir = base::apple::FrameworkBundlePath().Append("Libraries"); |
| } else { |
| if (!base::PathService::Get(base::FILE_EXE, &base_dir)) { |
| LOG(ERROR) << "PathService::Get failed."; |
| return false; |
| } |
| base_dir = base_dir.DirName(); |
| } |
| |
| base::FilePath glesv2_path = base_dir.Append(kGLESv2ANGLELibraryName); |
| base::NativeLibrary gles_library = LoadLibraryAndPrintError(glesv2_path); |
| if (!gles_library) { |
| return false; |
| } |
| |
| base::FilePath egl_path = base_dir.Append(kEGLANGLELibraryName); |
| 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); |
| // FIXME: SwiftShader must load symbols from libGLESv2 before libEGL on MacOS |
| // currently |
| AddGLNativeLibrary(gles_library); |
| AddGLNativeLibrary(egl_library); |
| |
| return true; |
| } |
| |
| bool InitializeStaticEGLInternal(GLImplementationParts implementation) { |
| #if BUILDFLAG(USE_STATIC_ANGLE) |
| if (implementation.gl == kGLImplementationEGLANGLE) { |
| // Use ANGLE if it is requested and it is statically linked |
| if (!InitializeStaticANGLEEGL()) |
| return false; |
| } else if (!InitializeStaticEGLInternalFromLibrary(implementation.gl)) { |
| return false; |
| } |
| #else |
| if (!InitializeStaticEGLInternalFromLibrary(implementation.gl)) { |
| return false; |
| } |
| #endif // !BUILDFLAG(USE_STATIC_ANGLE) |
| |
| SetGLImplementationParts(implementation); |
| InitializeStaticGLBindingsGL(); |
| InitializeStaticGLBindingsEGL(); |
| |
| return true; |
| } |
| #endif // defined(USE_EGL) |
| |
| } // namespace |
| |
| GLDisplay* InitializeGLOneOffPlatform(gl::GpuPreference gpu_preference) { |
| GLDisplayEGL* display = GetDisplayEGL(gpu_preference); |
| switch (GetGLImplementation()) { |
| #if defined(USE_EGL) |
| case kGLImplementationEGLGLES2: |
| case kGLImplementationEGLANGLE: |
| if (!InitializeDisplay(display, EGLDisplayPlatform(0))) { |
| LOG(ERROR) << "GLDisplayEGL::Initialize failed."; |
| return nullptr; |
| } |
| break; |
| #endif // defined(USE_EGL) |
| default: |
| break; |
| } |
| return display; |
| } |
| |
| bool InitializeStaticGLBindings(GLImplementationParts 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::ScopedAllowBlocking allow_blocking; |
| |
| switch (implementation.gl) { |
| #if defined(USE_EGL) |
| case kGLImplementationEGLGLES2: |
| case kGLImplementationEGLANGLE: |
| return InitializeStaticEGLInternal(implementation); |
| #endif // #if defined(USE_EGL) |
| case kGLImplementationMockGL: |
| case kGLImplementationStubGL: |
| SetGLImplementationParts(implementation); |
| InitializeStaticGLBindingsGL(); |
| return true; |
| default: |
| NOTREACHED(); |
| } |
| |
| return false; |
| } |
| |
| void ShutdownGLPlatform(GLDisplay* display) { |
| ClearBindingsGL(); |
| #if defined(USE_EGL) |
| if (display) |
| display->Shutdown(); |
| ClearBindingsEGL(); |
| #endif // defined(USE_EGL) |
| } |
| |
| } // namespace init |
| } // namespace gl |