DPF/dgl/OpenGL.hpp

/*
 * DISTRHO Plugin Framework (DPF)
 * Copyright (C) 2012-2019 Filipe Coelho <falktx@falktx.com>
 *
 * Permission to use, copy, modify, and/or distribute this software for any purpose with
 * or without fee is hereby granted, provided that the above copyright notice and this
 * permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
 * TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef DGL_OPENGL_HPP_INCLUDED
#define DGL_OPENGL_HPP_INCLUDED

#include "ImageBase.hpp"

// -----------------------------------------------------------------------
// Fix OpenGL includes for Windows, based on glfw code (part 1)

#undef DGL_CALLBACK_DEFINED
#undef DGL_WINGDIAPI_DEFINED

#ifdef DISTRHO_OS_WINDOWS

#ifndef APIENTRY
# define APIENTRY __stdcall
#endif // APIENTRY

/* We need WINGDIAPI defined */
#ifndef WINGDIAPI
# if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__POCC__)
#  define WINGDIAPI __declspec(dllimport)
# elif defined(__LCC__)
#  define WINGDIAPI __stdcall
# else
#  define WINGDIAPI extern
# endif
# define DGL_WINGDIAPI_DEFINED
#endif // WINGDIAPI

/* Some <GL/glu.h> files also need CALLBACK defined */
#ifndef CALLBACK
# if defined(_MSC_VER)
#  if (defined(_M_MRX000) || defined(_M_IX86) || defined(_M_ALPHA) || defined(_M_PPC)) && !defined(MIDL_PASS)
#   define CALLBACK __stdcall
#  else
#   define CALLBACK
#  endif
# else
#  define CALLBACK __stdcall
# endif
# define DGL_CALLBACK_DEFINED
#endif // CALLBACK

/* Most GL/glu.h variants on Windows need wchar_t */
#include <cstddef>

#endif // DISTRHO_OS_WINDOWS

// -----------------------------------------------------------------------
// OpenGL includes

#ifdef DISTRHO_OS_MAC
# include <OpenGL/gl.h>
#else
# ifndef DISTRHO_OS_WINDOWS
#  define GL_GLEXT_PROTOTYPES
# endif
# include <GL/gl.h>
# include <GL/glext.h>
#endif

// -----------------------------------------------------------------------
// Missing OpenGL defines

#if defined(GL_BGR_EXT) && !defined(GL_BGR)
# define GL_BGR GL_BGR_EXT
#endif

#if defined(GL_BGRA_EXT) && !defined(GL_BGRA)
# define GL_BGRA GL_BGRA_EXT
#endif

#ifndef GL_CLAMP_TO_BORDER
# define GL_CLAMP_TO_BORDER 0x812D
#endif

// -----------------------------------------------------------------------
// Fix OpenGL includes for Windows, based on glfw code (part 2)

#ifdef DGL_CALLBACK_DEFINED
# undef CALLBACK
# undef DGL_CALLBACK_DEFINED
#endif

#ifdef DGL_WINGDIAPI_DEFINED
# undef WINGDIAPI
# undef DGL_WINGDIAPI_DEFINED
#endif

START_NAMESPACE_DGL

// -----------------------------------------------------------------------

/**
   Graphics context.
 */
struct GraphicsContext
{
};

// -----------------------------------------------------------------------

END_NAMESPACE_DGL

#endif