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// Copyright (c) 2010 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 <string>

#include "base/native_library.h"
#include "build/build_config.h"

namespace gfx {

// The GL implementation currently in use.
enum GLImplementation {

#if defined(OS_WIN)
typedef void* (WINAPI *GLGetProcAddressProc)(const char* name);
typedef void* (*GLGetProcAddressProc)(const char* name);

// Initialize a particular GL implementation.
bool InitializeGLBindings(GLImplementation implementation);

// Set the current GL implementation.
void SetGLImplementation(GLImplementation implementation);

// Get the current GL implementation.
GLImplementation GetGLImplementation();

// Get the GL implementation with a given name.
GLImplementation GetNamedGLImplementation(const std::wstring& name);

// Initialize the preferred GL binding from the given list. The preferred GL
// bindings depend on command line switches passed by the user and which GL
// implementations are available and working on the system
bool InitializeBestGLBindings(
    const GLImplementation* allowed_implementations_begin,
    const GLImplementation* allowed_implementations_end);

// Add a native library to those searched for GL entry points.
void AddGLNativeLibrary(base::NativeLibrary library);

// Set an additional function that will be called to find GL entry points.
void SetGLGetProcAddressProc(GLGetProcAddressProc proc);

// Find an entry point in the current GL implementation.
void* GetGLProcAddress(const char* name);

}  // namespace gfx


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