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// Copyright 2014 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/gl_implementation_osmesa.h"
#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/native_library.h"
#include "base/path_service.h"
#include "build/build_config.h"
#include "ui/gl/gl_bindings.h"
#include "ui/gl/gl_gl_api_implementation.h"
#include "ui/gl/gl_implementation.h"
#include "ui/gl/gl_osmesa_api_implementation.h"
namespace gl {
bool InitializeStaticGLBindingsOSMesaGL() {
base::FilePath module_path;
#if !defined(OS_FUCHSIA)
// On all platforms except Fuchsia libosmesa.so is expected to be in the same
// directory as the chrome binary. Pass full path to dlopen() to ensure we
// load the right version.
//
// On Fuchsia libraries are normally in the lib directory. The loader service
// will load libosmesa.so that belongs to the chrome package when dlopen() is
// called with relative path.
if (!PathService::Get(base::DIR_MODULE, &module_path)) {
LOG(ERROR) << "PathService::Get failed.";
return false;
}
#endif // !defined(OS_FUCHSIA)
#if defined(OS_WIN)
base::FilePath library_path =
module_path.Append(FILE_PATH_LITERAL("osmesa.dll"));
#else
base::FilePath library_path =
module_path.Append(FILE_PATH_LITERAL("libosmesa.so"));
#endif
base::NativeLibrary library = LoadLibraryAndPrintError(library_path);
if (!library)
return false;
GLGetProcAddressProc get_proc_address =
reinterpret_cast<GLGetProcAddressProc>(
base::GetFunctionPointerFromNativeLibrary(library,
"OSMesaGetProcAddress"));
if (!get_proc_address) {
LOG(ERROR) << "OSMesaGetProcAddress not found.";
base::UnloadNativeLibrary(library);
return false;
}
SetGLGetProcAddressProc(get_proc_address);
AddGLNativeLibrary(library);
SetGLImplementation(kGLImplementationOSMesaGL);
InitializeStaticGLBindingsGL();
InitializeStaticGLBindingsOSMESA();
return true;
}
} // namespace gl
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