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// Copyright 2013 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_linux.h"
#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/native_library.h"
#include "base/path_service.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 gfx {
// Load a library, printing an error message on failure.
base::NativeLibrary LoadLibrary(const base::FilePath& filename) {
std::string error;
base::NativeLibrary library = base::LoadNativeLibrary(filename, &error);
if (!library) {
DVLOG(1) << "Failed to load " << filename.MaybeAsASCII() << ": " << error;
return NULL;
}
return library;
}
base::NativeLibrary LoadLibrary(const char* filename) {
return LoadLibrary(base::FilePath(filename));
}
bool InitializeGLBindingsOSMesaGL() {
base::FilePath module_path;
if (!PathService::Get(base::DIR_MODULE, &module_path)) {
LOG(ERROR) << "PathService::Get failed.";
return false;
}
base::NativeLibrary library = LoadLibrary(module_path.Append("libosmesa.so"));
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);
InitializeGLBindingsGL();
InitializeGLBindingsOSMESA();
return true;
}
} // namespace gfx
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