58 lines
1.5 KiB
C++
58 lines
1.5 KiB
C++
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// Internal interface to set up OpenGL.
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// A "Fl_Gl_Choice" is used to cache results of calling the
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// OpenGL code for system-specific information needed to
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// implement a "mode".
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// For X this is a visual, and this must be called *before*
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// the X window is created.
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// For win32 this can be delayed to a more convienent time,
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// as it only returns information for modifying a device
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// context.
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// This is used by Fl_Gl_Window, gl_start(), and gl_visual()
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#ifndef Fl_Gl_Choice_H
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#define Fl_Gl_Choice_H
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#ifdef WIN32
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# include <windows.h>
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# include <FL/gl.h>
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# define GLXContext HGLRC
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# define GLX_BUFFER_SIZE 1
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# define GLX_RGBA 2
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# define GLX_GREEN_SIZE 3
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# define GLX_ALPHA_SIZE 4
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# define GLX_ACCUM_GREEN_SIZE 5
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# define GLX_ACCUM_ALPHA_SIZE 6
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# define GLX_DOUBLEBUFFER 7
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# define GLX_DEPTH_SIZE 8
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# define GLX_STENCIL_SIZE 9
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#else
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# include <GL/glx.h>
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#endif
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// one of these structures is returned:
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class Fl_Gl_Choice {
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int mode;
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const int *alist;
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Fl_Gl_Choice *next;
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public:
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#ifdef WIN32
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PIXELFORMATDESCRIPTOR pfd;
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#else
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XVisualInfo *vis; // the visual to use
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Colormap colormap; // a colormap to use
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#endif
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uchar r,d,o; // rgb mode, double buffered, overlay flags
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// either use mode flags from gl_draw.H or a literal glX int list.
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// one of the two arguments must be zero!
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static Fl_Gl_Choice *find(int mode, const int *);
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};
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#ifdef WIN32
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// function to create and init the dc needed to draw OpenGL:
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class Fl_Window;
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HDC fl_private_dc(Fl_Window*, int, Fl_Gl_Choice **gp);
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#endif
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#endif
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