text: /*
   * Mesa 3-D graphics library
   *
   * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included
   * in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
   * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
   * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   * OTHER DEALINGS IN THE SOFTWARE.
   */
  
  
  #ifndef GLX_H
  #define GLX_H
  
  
  #include <X11/Xlib.h>
  #include <X11/Xutil.h>
  #include "gl.h"
  
  
  #if defined(USE_MGL_NAMESPACE)
  #include "glx_mangle.h"
  #endif
  
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  
  #define GLX_VERSION_1_1		1
  #define GLX_VERSION_1_2		1
  #define GLX_VERSION_1_3		1
  #define GLX_VERSION_1_4		1
  
  #define GLX_EXTENSION_NAME   "GLX"
  
  
  
  /*
   * Tokens for glXChooseVisual and glXGetConfig:
   */
  #define GLX_USE_GL		1
  #define GLX_BUFFER_SIZE		2
  #define GLX_LEVEL		3
  #define GLX_RGBA		4
  #define GLX_DOUBLEBUFFER	5
  #define GLX_STEREO		6
  #define GLX_AUX_BUFFERS		7
  #define GLX_RED_SIZE		8
  #define GLX_GREEN_SIZE		9
  #define GLX_BLUE_SIZE		10
  #define GLX_ALPHA_SIZE		11
  #define GLX_DEPTH_SIZE		12
  #define GLX_STENCIL_SIZE	13
  #define GLX_ACCUM_RED_SIZE	14
  #define GLX_ACCUM_GREEN_SIZE	15
  #define GLX_ACCUM_BLUE_SIZE	16
  #define GLX_ACCUM_ALPHA_SIZE	17
  
  
  /*
   * Error codes returned by glXGetConfig:
   */
  #define GLX_BAD_SCREEN		1
  #define GLX_BAD_ATTRIBUTE	2
  #define GLX_NO_EXTENSION	3
  #define GLX_BAD_VISUAL		4
  #define GLX_BAD_CONTEXT		5
  #define GLX_BAD_VALUE       	6
  #define GLX_BAD_ENUM		7
  
  
  /*
   * GLX 1.1 and later:
   */
  #define GLX_VENDOR		1
  #define GLX_VERSION		2
  #define GLX_EXTENSIONS 		3
  
  
  /*
   * GLX 1.3 and later:
   */
  #define GLX_CONFIG_CAVEAT		0x20
  #define GLX_DONT_CARE			0xFFFFFFFF
  #define GLX_X_VISUAL_TYPE		0x22
  #define GLX_TRANSPARENT_TYPE		0x23
  #define GLX_TRANSPARENT_INDEX_VALUE	0x24
  #define GLX_TRANSPARENT_RED_VALUE	0x25
  #define GLX_TRANSPARENT_GREEN_VALUE	0x26
  #define GLX_TRANSPARENT_BLUE_VALUE	0x27
  #define GLX_TRANSPARENT_ALPHA_VALUE	0x28
  #define GLX_WINDOW_BIT			0x00000001
  #define GLX_PIXMAP_BIT			0x00000002
  #define GLX_PBUFFER_BIT			0x00000004
  #define GLX_AUX_BUFFERS_BIT		0x00000010
  #define GLX_FRONT_LEFT_BUFFER_BIT	0x00000001
  #define GLX_FRONT_RIGHT_BUFFER_BIT	0x00000002
  #define GLX_BACK_LEFT_BUFFER_BIT	0x00000004
  #define GLX_BACK_RIGHT_BUFFER_BIT	0x00000008
  #define GLX_DEPTH_BUFFER_BIT		0x00000020
  #define GLX_STENCIL_BUFFER_BIT		0x00000040
  #define GLX_ACCUM_BUFFER_BIT		0x00000080
  #define GLX_NONE			0x8000
  #define GLX_SLOW_CONFIG			0x8001
  #define GLX_TRUE_COLOR			0x8002
  #define GLX_DIRECT_COLOR		0x8003
  #define GLX_PSEUDO_COLOR		0x8004
  #define GLX_STATIC_COLOR		0x8005
  #define GLX_GRAY_SCALE			0x8006
  #define GLX_STATIC_GRAY			0x8007
  #define GLX_TRANSPARENT_RGB		0x8008
  #define GLX_TRANSPARENT_INDEX		0x8009
  #define GLX_VISUAL_ID			0x800B
  #define GLX_SCREEN			0x800C
  #define GLX_NON_CONFORMANT_CONFIG	0x800D
  #define GLX_DRAWABLE_TYPE		0x8010
  #define GLX_RENDER_TYPE			0x8011
  #define GLX_X_RENDERABLE		0x8012
  #define GLX_FBCONFIG_ID			0x8013
  #define GLX_RGBA_TYPE			0x8014
  #define GLX_COLOR_INDEX_TYPE		0x8015
  #define GLX_MAX_PBUFFER_WIDTH		0x8016
  #define GLX_MAX_PBUFFER_HEIGHT		0x8017
  #define GLX_MAX_PBUFFER_PIXELS		0x8018
  #define GLX_PRESERVED_CONTENTS		0x801B
  #define GLX_LARGEST_PBUFFER		0x801C
  #define GLX_WIDTH			0x801D
  #define GLX_HEIGHT			0x801E
  #define GLX_EVENT_MASK			0x801F
  #define GLX_DAMAGED			0x8020
  #define GLX_SAVED			0x8021
  #define GLX_WINDOW			0x8022
  #define GLX_PBUFFER			0x8023
  #define GLX_PBUFFER_HEIGHT              0x8040
  #define GLX_PBUFFER_WIDTH               0x8041
  #define GLX_RGBA_BIT			0x00000001
  #define GLX_COLOR_INDEX_BIT		0x00000002
  #define GLX_PBUFFER_CLOBBER_MASK	0x08000000
  
  
  /*
   * GLX 1.4 and later:
   */
  #define GLX_SAMPLE_BUFFERS              0x186a0 /*100000*/
  #define GLX_SAMPLES                     0x186a1 /*100001*/
  
  
  
  typedef struct __GLXcontextRec *GLXContext;
  typedef XID GLXPixmap;
  typedef XID GLXDrawable;
  /* GLX 1.3 and later */
  typedef struct __GLXFBConfigRec *GLXFBConfig;
  typedef XID GLXFBConfigID;
  typedef XID GLXContextID;
  typedef XID GLXWindow;
  typedef XID GLXPbuffer;
  
  
  /*
  ** Events.
  ** __GLX_NUMBER_EVENTS is set to 17 to account for the BufferClobberSGIX
  **  event - this helps initialization if the server supports the pbuffer
  **  extension and the client doesn't.
  */
  #define GLX_PbufferClobber	0
  #define GLX_BufferSwapComplete	1
  
  #define __GLX_NUMBER_EVENTS 17
  
  extern XVisualInfo* glXChooseVisual( Display *dpy, int screen,
  				     int *attribList );
  
  extern GLXContext glXCreateContext( Display *dpy, XVisualInfo *vis,
  				    GLXContext shareList, Bool direct );
  
  extern void glXDestroyContext( Display *dpy, GLXContext ctx );
  
  extern Bool glXMakeCurrent( Display *dpy, GLXDrawable drawable,
  			    GLXContext ctx);
  
  extern void glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
  			    unsigned long mask );
  
  extern void glXSwapBuffers( Display *dpy, GLXDrawable drawable );
  
  extern GLXPixmap glXCreateGLXPixmap( Display *dpy, XVisualInfo *visual,
  				     Pixmap pixmap );
  
  extern void glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap );
  
  extern Bool glXQueryExtension( Display *dpy, int *errorb, int *event );
  
  extern Bool glXQueryVersion( Display *dpy, int *maj, int *min );
  
  extern Bool glXIsDirect( Display *dpy, GLXContext ctx );
  
  extern int glXGetConfig( Display *dpy, XVisualInfo *visual,
  			 int attrib, int *value );
  
  extern GLXContext glXGetCurrentContext( void );
  
  extern GLXDrawable glXGetCurrentDrawable( void );
  
  extern void glXWaitGL( void );
  
  extern void glXWaitX( void );
  
  extern void glXUseXFont( Font font, int first, int count, int list );
  
  
  
  /* GLX 1.1 and later */
  extern const char *glXQueryExtensionsString( Display *dpy, int screen );
  
  extern const char *glXQueryServerString( Display *dpy, int screen, int name );
  
  extern const char *glXGetClientString( Display *dpy, int name );
  
  
  /* GLX 1.2 and later */
  extern Display *glXGetCurrentDisplay( void );
  
  
  /* GLX 1.3 and later */
  extern GLXFBConfig *glXChooseFBConfig( Display *dpy, int screen,
                                         const int *attribList, int *nitems );
  
  extern int glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
                                   int attribute, int *value );
  
  extern GLXFBConfig *glXGetFBConfigs( Display *dpy, int screen,
                                       int *nelements );
  
  extern XVisualInfo *glXGetVisualFromFBConfig( Display *dpy,
                                                GLXFBConfig config );
  
  extern GLXWindow glXCreateWindow( Display *dpy, GLXFBConfig config,
                                    Window win, const int *attribList );
  
  extern void glXDestroyWindow( Display *dpy, GLXWindow window );
  
  extern GLXPixmap glXCreatePixmap( Display *dpy, GLXFBConfig config,
                                    Pixmap pixmap, const int *attribList );
  
  extern void glXDestroyPixmap( Display *dpy, GLXPixmap pixmap );
  
  extern GLXPbuffer glXCreatePbuffer( Display *dpy, GLXFBConfig config,
                                      const int *attribList );
  
  extern void glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf );
  
  extern void glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
                                unsigned int *value );
  
  extern GLXContext glXCreateNewContext( Display *dpy, GLXFBConfig config,
                                         int renderType, GLXContext shareList,
                                         Bool direct );
  
  extern Bool glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
                                     GLXDrawable read, GLXContext ctx );
  
  extern GLXDrawable glXGetCurrentReadDrawable( void );
  
  extern int glXQueryContext( Display *dpy, GLXContext ctx, int attribute,
                              int *value );
  
  extern void glXSelectEvent( Display *dpy, GLXDrawable drawable,
                              unsigned long mask );
  
  extern void glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
                                   unsigned long *mask );
  
  /* GLX 1.3 function pointer typedefs */
  typedef GLXFBConfig * (* PFNGLXGETFBCONFIGSPROC) (Display *dpy, int screen, int *nelements);
  typedef GLXFBConfig * (* PFNGLXCHOOSEFBCONFIGPROC) (Display *dpy, int screen, const int *attrib_list, int *nelements);
  typedef int (* PFNGLXGETFBCONFIGATTRIBPROC) (Display *dpy, GLXFBConfig config, int attribute, int *value);
  typedef XVisualInfo * (* PFNGLXGETVISUALFROMFBCONFIGPROC) (Display *dpy, GLXFBConfig config);
  typedef GLXWindow (* PFNGLXCREATEWINDOWPROC) (Display *dpy, GLXFBConfig config, Window win, const int *attrib_list);
  typedef void (* PFNGLXDESTROYWINDOWPROC) (Display *dpy, GLXWindow win);
  typedef GLXPixmap (* PFNGLXCREATEPIXMAPPROC) (Display *dpy, GLXFBConfig config, Pixmap pixmap, const int *attrib_list);
  typedef void (* PFNGLXDESTROYPIXMAPPROC) (Display *dpy, GLXPixmap pixmap);
  typedef GLXPbuffer (* PFNGLXCREATEPBUFFERPROC) (Display *dpy, GLXFBConfig config, const int *attrib_list);
  typedef void (* PFNGLXDESTROYPBUFFERPROC) (Display *dpy, GLXPbuffer pbuf);
  typedef void (* PFNGLXQUERYDRAWABLEPROC) (Display *dpy, GLXDrawable draw, int attribute, unsigned int *value);
  typedef GLXContext (* PFNGLXCREATENEWCONTEXTPROC) (Display *dpy, GLXFBConfig config, int render_type, GLXContext share_list, Bool direct);
  typedef Bool (* PFNGLXMAKECONTEXTCURRENTPROC) (Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx);
  typedef GLXDrawable (* PFNGLXGETCURRENTREADDRAWABLEPROC) (void);
  typedef Display * (* PFNGLXGETCURRENTDISPLAYPROC) (void);
  typedef int (* PFNGLXQUERYCONTEXTPROC) (Display *dpy, GLXContext ctx, int attribute, int *value);
  typedef void (* PFNGLXSELECTEVENTPROC) (Display *dpy, GLXDrawable draw, unsigned long event_mask);
  typedef void (* PFNGLXGETSELECTEDEVENTPROC) (Display *dpy, GLXDrawable draw, unsigned long *event_mask);
  
  
  /*
   * ARB 2. GLX_ARB_get_proc_address
   */
  #ifndef GLX_ARB_get_proc_address
  #define GLX_ARB_get_proc_address 1
  
  typedef void (*__GLXextFuncPtr)(void);
  extern __GLXextFuncPtr glXGetProcAddressARB (const GLubyte *);
  
  #endif /* GLX_ARB_get_proc_address */
  
  
  
  /* GLX 1.4 and later */
  extern void (*glXGetProcAddress(const GLubyte *procname))( void );
  
  /* GLX 1.4 function pointer typedefs */
  typedef __GLXextFuncPtr (* PFNGLXGETPROCADDRESSPROC) (const GLubyte *procName);
  
  
  #ifndef GLX_GLXEXT_LEGACY
  
  #include <GL/glxext.h>
  
  #endif /* GLX_GLXEXT_LEGACY */
  
  
  /**
   ** The following aren't in glxext.h yet.
   **/
  
  
  /*
   * ???. GLX_NV_vertex_array_range
   */
  #ifndef GLX_NV_vertex_array_range
  #define GLX_NV_vertex_array_range
  
  extern void *glXAllocateMemoryNV(GLsizei size, GLfloat readfreq, GLfloat writefreq, GLfloat priority);
  extern void glXFreeMemoryNV(GLvoid *pointer);
  typedef void * ( * PFNGLXALLOCATEMEMORYNVPROC) (GLsizei size, GLfloat readfreq, GLfloat writefreq, GLfloat priority);
  typedef void ( * PFNGLXFREEMEMORYNVPROC) (GLvoid *pointer);
  
  #endif /* GLX_NV_vertex_array_range */
  
  
  /*
   * ARB ?. GLX_ARB_render_texture
   * XXX This was never finalized!
   */
  #ifndef GLX_ARB_render_texture
  #define GLX_ARB_render_texture 1
  
  extern Bool glXBindTexImageARB(Display *dpy, GLXPbuffer pbuffer, int buffer);
  extern Bool glXReleaseTexImageARB(Display *dpy, GLXPbuffer pbuffer, int buffer);
  extern Bool glXDrawableAttribARB(Display *dpy, GLXDrawable draw, const int *attribList);
  
  #endif /* GLX_ARB_render_texture */
  
  
  /*
   * #?. GLX_MESA_swap_frame_usage
   */
  #ifndef GLX_MESA_swap_frame_usage
  #define GLX_MESA_swap_frame_usage 1
  
  extern int glXGetFrameUsageMESA(Display *dpy, GLXDrawable drawable, float *usage);
  extern int glXBeginFrameTrackingMESA(Display *dpy, GLXDrawable drawable);
  extern int glXEndFrameTrackingMESA(Display *dpy, GLXDrawable drawable);
  extern int glXQueryFrameTrackingMESA(Display *dpy, GLXDrawable drawable, int64_t *swapCount, int64_t *missedFrames, float *lastMissedUsage);
  
  typedef int (*PFNGLXGETFRAMEUSAGEMESAPROC) (Display *dpy, GLXDrawable drawable, float *usage);
  typedef int (*PFNGLXBEGINFRAMETRACKINGMESAPROC)(Display *dpy, GLXDrawable drawable);
  typedef int (*PFNGLXENDFRAMETRACKINGMESAPROC)(Display *dpy, GLXDrawable drawable);
  typedef int (*PFNGLXQUERYFRAMETRACKINGMESAPROC)(Display *dpy, GLXDrawable drawable, int64_t *swapCount, int64_t *missedFrames, float *lastMissedUsage);
  
  #endif /* GLX_MESA_swap_frame_usage */
  
  
  
  /*
   * #?. GLX_MESA_swap_control
   */
  #ifndef GLX_MESA_swap_control
  #define GLX_MESA_swap_control 1
  
  extern int glXSwapIntervalMESA(unsigned int interval);
  extern int glXGetSwapIntervalMESA(void);
  
  typedef int (*PFNGLXSWAPINTERVALMESAPROC)(unsigned int interval);
  typedef int (*PFNGLXGETSWAPINTERVALMESAPROC)(void);
  
  #endif /* GLX_MESA_swap_control */
  
  
  /*** Should these go here, or in another header? */
  /*
  ** GLX Events
  */
  typedef struct {
      int event_type;		/* GLX_DAMAGED or GLX_SAVED */
      int draw_type;		/* GLX_WINDOW or GLX_PBUFFER */
      unsigned long serial;	/* # of last request processed by server */
      Bool send_event;		/* true if this came for SendEvent request */
      Display *display;		/* display the event was read from */
      GLXDrawable drawable;	/* XID of Drawable */
      unsigned int buffer_mask;	/* mask indicating which buffers are affected */
      unsigned int aux_buffer;	/* which aux buffer was affected */
      int x, y;
      int width, height;
      int count;			/* if nonzero, at least this many more */
  } GLXPbufferClobberEvent;
  
  typedef struct {
      int type;
      unsigned long serial;	/* # of last request processed by server */
      Bool send_event;		/* true if this came from a SendEvent request */
      Display *display;		/* Display the event was read from */
      Drawable drawable;	/* drawable on which event was requested in event mask */
      int event_type;
      int64_t ust;
      int64_t msc;
      int64_t sbc;
  } GLXBufferSwapComplete;
  
  typedef union __GLXEvent {
      GLXPbufferClobberEvent glxpbufferclobber;
      GLXBufferSwapComplete glxbufferswapcomplete;
      long pad[24];
  } GLXEvent;
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif
  