ref: 2c23de27d5006e969106fad672399fafe6464845
dir: /DoConfig/fltk/FL/gl.h/
// // "$Id$" // // OpenGL header file for the Fast Light Tool Kit (FLTK). // // Copyright 1998-2011 by Bill Spitzak and others. // // You must include this instead of GL/gl.h to get the Microsoft // APIENTRY stuff included (from <windows.h>) prior to the OpenGL // header files. // // This file also provides "missing" OpenGL functions, and // gl_start() and gl_finish() to allow OpenGL to be used in any window // // This library is free software. Distribution and use rights are outlined in // the file "COPYING" which should have been included with this file. If this // file is missing or damaged, see the license at: // // http://www.fltk.org/COPYING.php // // Please report all bugs and problems on the following page: // // http://www.fltk.org/str.php // /** \file gl.h * This file defines wrapper functions for OpenGL in FLTK * * To use OpenGL from within an FLTK application you MUST use gl_visual() * to select the default visual before doing show() on any windows. Mesa * will crash if yoy try to use a visual not returned by glxChooseVidual. * * This does not work with Fl_Double_Window's! It will try to draw * into the front buffer. Depending on the system this will either * crash or do nothing (when pixmaps are being used as back buffer * and GL is being done by hardware), work correctly (when GL is done * with software, such as Mesa), or draw into the front buffer and * be erased when the buffers are swapped (when double buffer hardware * is being used) */ #ifndef FL_gl_H # define FL_gl_H # include "Enumerations.H" // for color names # ifdef WIN32 # include <windows.h> # endif # ifndef APIENTRY # if defined(__CYGWIN__) # define APIENTRY __attribute__ ((__stdcall__)) # else # define APIENTRY # endif # endif # ifdef __APPLE__ # include <OpenGL/gl.h> # else # include <GL/gl.h> # endif // __APPLE__ FL_EXPORT void gl_start(); FL_EXPORT void gl_finish(); FL_EXPORT void gl_color(Fl_Color i); /** back compatibility */ inline void gl_color(int c) {gl_color((Fl_Color)c);} FL_EXPORT void gl_rect(int x,int y,int w,int h); /** Fills the given rectangle with the current color. \see gl_rect(int x, int y, int w, int h) */ inline void gl_rectf(int x,int y,int w,int h) {glRecti(x,y,x+w,y+h);} FL_EXPORT void gl_font(int fontid, int size); FL_EXPORT int gl_height(); FL_EXPORT int gl_descent(); FL_EXPORT double gl_width(const char *); FL_EXPORT double gl_width(const char *, int n); FL_EXPORT double gl_width(uchar); FL_EXPORT void gl_draw(const char*); FL_EXPORT void gl_draw(const char*, int n); FL_EXPORT void gl_draw(const char*, int x, int y); FL_EXPORT void gl_draw(const char*, float x, float y); FL_EXPORT void gl_draw(const char*, int n, int x, int y); FL_EXPORT void gl_draw(const char*, int n, float x, float y); FL_EXPORT void gl_draw(const char*, int x, int y, int w, int h, Fl_Align); FL_EXPORT void gl_measure(const char*, int& x, int& y); #ifdef __APPLE__ extern FL_EXPORT void gl_texture_pile_height(int max); extern FL_EXPORT int gl_texture_pile_height(); #endif FL_EXPORT void gl_draw_image(const uchar *, int x,int y,int w,int h, int d=3, int ld=0); #endif // !FL_gl_H // // End of "$Id$". //