progs/xdemos/pbinfo.c

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