progs/xdemos/pbinfo.c

   1 /* $Id: pbinfo.c,v 1.2 2003/04/21 14:51:16 brianp Exp $ */
   2
   3 /*
   4  * Print list of fbconfigs and test each to see if a pbuffer can be created
   5  * for that config.
   6  *
   7  * Brian Paul
   8  * April 1997
   9  * Updated on 5 October 2002.
  10  */
  11
  12
  13 #include <X11/Xlib.h>
  14 #include <stdio.h>
  15 #include <string.h>
  16 #include "pbutil.h"
  17
  18
  19
  20
  21 static void
  22 PrintConfigs(Display *dpy, int screen, Bool horizFormat)
  23 {
  24    GLXFBConfigSGIX *fbConfigs;
  25    int nConfigs;
  26    int i;
  27    /* Note: you may want to tweek the attribute list to select a different
  28     * set of fbconfigs.
  29     */
  30    int fbAttribs[] = {
  31                       GLX_RENDER_TYPE_SGIX, 0,
  32                       GLX_DRAWABLE_TYPE_SGIX, 0,
  33 #if 0
  34                       GLX_RENDER_TYPE_SGIX, GLX_RGBA_BIT_SGIX,
  35                       GLX_DRAWABLE_TYPE_SGIX, GLX_PIXMAP_BIT_SGIX,
  36                       GLX_RED_SIZE, 1,
  37                       GLX_GREEN_SIZE, 1,
  38                       GLX_BLUE_SIZE, 1,
  39                       GLX_DEPTH_SIZE, 1,
  40                       GLX_DOUBLEBUFFER, 0,
  41                       GLX_STENCIL_SIZE, 0,
  42 #endif
  43                       None};
  44
  45
  46    /* Get list of possible frame buffer configurations */
  47 #if 0
  48    /* SGIX method */
  49    fbConfigs = glXChooseFBConfigSGIX(dpy, screen, fbAttribs, &nConfigs);
  50 #else
  51    /* GLX 1.3 method */
  52    (void) fbAttribs;
  53    fbConfigs = glXGetFBConfigs(dpy, screen, &nConfigs);
  54 #endif
  55
  56    if (nConfigs==0 || !fbConfigs) {
  57       printf("Error: glxChooseFBConfigSGIX failed\n");
  58       return;
  59    }
  60
  61    printf("Number of fbconfigs: %d\n", nConfigs);
  62
  63    if (horizFormat) {
  64       printf("  ID  VisualType  Depth Lvl RGB CI DB Stereo  R  G  B  A");
  65       printf("   Z  S  AR AG AB AA  MSbufs MSnum  Pbuffer\n");
  66    }
  67
  68    /* Print config info */
  69    for (i=0;i<nConfigs;i++) {
  70       PrintFBConfigInfo(dpy, fbConfigs[i], horizFormat);
  71    }
  72
  73    /* free the list */
  74    XFree(fbConfigs);
  75 }
  76
  77
  78
  79 static void
  80 PrintUsage(void)
  81 {
  82    printf("Options:\n");
  83    printf("  -display <display-name>  specify X display name\n");
  84    printf("  -t                       print in tabular format\n");
  85    printf("  -v                       print in verbose format\n");
  86    printf("  -help                    print this information\n");
  87 }
  88
  89
  90 int
  91 main(int argc, char *argv[])
  92 {
  93    Display *dpy;
  94    int scrn;
  95    char *dpyName = NULL;
  96    Bool horizFormat = True;
  97    int i;
  98
  99    for (i=1; i<argc; i++) {
 100       if (strcmp(argv[i],"-display")==0) {
 101          if (i+1<argc) {
 102             dpyName = argv[i+1];
 103             i++;
 104          }
 105       }
 106       else if (strcmp(argv[i],"-t")==0) {
 107          /* tabular format */
 108          horizFormat = True;
 109       }
 110       else if (strcmp(argv[i],"-v")==0) {
 111          /* verbose format */
 112          horizFormat = False;
 113       }
 114       else if (strcmp(argv[i],"-help")==0) {
 115          PrintUsage();
 116          return 0;
 117       }
 118       else {
 119          printf("Unknown option: %s\n", argv[i]);
 120       }
 121    }
 122
 123    dpy = XOpenDisplay(dpyName);
 124
 125    if (!dpy) {
 126       printf("Error: couldn't open display %s\n", dpyName ? dpyName : ":0");
 127       return 1;
 128    }
 129
 130    scrn = DefaultScreen(dpy);
 131    PrintConfigs(dpy, scrn, horizFormat);
 132    XCloseDisplay(dpy);
 133    return 0;
 134 }