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/*
* GemGL: openGL includes for GEM
*
* include this file if you want to include the
* openGL-headers installed on your system
*
* tasks:
*
* + this file hides the peculiarities of the various platforms
* (like "OpenGL/gl.h" vs "GL/gl.h")
*
* + define some pre-processor defines that are missing in the GL-headers
*
* + try to exclude parts of the GL-headers based on GemConfig.h
*
*/
#ifndef _INCLUDE__GEM_GEM_GEMGL_H_
#define _INCLUDE__GEM_GEM_GEMGL_H_
#include "Gem/ExportDef.h"
// I hate Microsoft...I shouldn't have to do this!
#ifdef _WIN32
# include <windows.h>
#endif
#include "Gem/GemGLconfig.h"
#ifdef GEM_MULTICONTEXT
# define GLEW_MX
#endif
#ifndef GEM_HAVE_GLU
# define GLEW_NO_GLU
#else
#endif
#ifdef __EMSCRIPTEN__
# include <GL/glew.h>
# include <SDL/SDL_opengl.h>
# include <GL/gl.h>
# ifdef GEM_HAVE_GLU
# include <GL/glu.h>
# endif
#else
# include "Gem/glew.h"
#endif
#ifdef __APPLE__
# include <OpenGL/OpenGL.h>
#elif defined(__EMSCRIPTEN__)
#elif defined _WIN32
# include "Gem/wglew.h"
#elif defined(__linux__) || defined(__FreeBSD_kernel__)
# include "Gem/glxew.h"
#endif /* OS */
#ifdef GEM_MULTICONTEXT
GEM_EXTERN GLEWContext*glewGetContext(void);
# ifdef __APPLE__
# elif defined _WIN32
GEM_EXTERN WGLEWContext*wglewGetContext(void);
# elif defined __linux__ || defined HAVE_GL_GLX_H
GEM_EXTERN GLXEWContext*glxewGetContext(void);
# endif
#endif /* GEM_MULTICONTEXT */
#ifndef GL_YUV422_GEM
# define GL_YCBCR_422_GEM GL_YCBCR_422_APPLE
# define GL_YUV422_GEM GL_YCBCR_422_GEM
#endif /* GL_YUV422_GEM */
#ifndef GL_RGBA_GEM
# ifdef __APPLE__
# define GL_RGBA_GEM GL_BGRA_EXT
# else
# define GL_RGBA_GEM GL_RGBA
# endif
#endif /* GL_RGBA_GEM */
/* default draw-style */
#ifndef GL_DEFAULT_GEM
# define GL_DEFAULT_GEM 0xFFFF
#endif
/* uäh: in OSX10.3 we only have CGL-1.1 and
* all the functions are using "long*" rather than "GLint*")
* only CGL-1.2 got it right
*/
#ifdef CGL_VERSION_1_0
# ifdef CGL_VERSION_1_2
# define GemCGLint GLint
# else
# define GemCGLint long
# endif
#endif
// missing from Emscripten's glew implementation
#ifndef GL_TEXTURE_RECTANGLE_EXT
# define GL_TEXTURE_RECTANGLE_EXT 0x84F5
#endif
#endif /* _INCLUDE__GEM_GEM_GEMGL_H_ */
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