progs/xdemos/glxinfo.c

   1 /* $Id: glxinfo.c,v 1.1 1999/09/16 16:40:46 brianp Exp $ */
   2
   3
   4 /*
   5  * Query GLX extensions, version, vendor, etc.
   6  * This program is in the public domain.
   7  * brian_paul@mesa3d.org
   8  */
   9
  10
  11
  12 #include <GL/gl.h>
  13 #include <GL/glx.h>
  14 #include <GL/glu.h>
  15 #include <stdio.h>
  16 #include <stdlib.h>
  17
  18
  19
  20 static void
  21 query_glx( Display *dpy, int scr )
  22 {
  23    printf("GL_VERSION: %s\n", (char *) glGetString(GL_VERSION));
  24    printf("GL_EXTENSIONS: %s\n", (char *) glGetString(GL_EXTENSIONS));
  25    printf("GL_RENDERER: %s\n", (char *) glGetString(GL_RENDERER));
  26    printf("GL_VENDOR: %s\n", (char *) glGetString(GL_VENDOR));
  27    printf("GLU_VERSION: %s\n", (char *) gluGetString(GLU_VERSION));
  28    printf("GLU_EXTENSIONS: %s\n", (char *) gluGetString(GLU_EXTENSIONS));
  29
  30    printf("server GLX_VENDOR: %s\n", (char *) glXQueryServerString( dpy, scr, GLX_VENDOR));
  31    printf("server GLX_VERSION: %s\n", (char *) glXQueryServerString( dpy, scr, GLX_VERSION));
  32    printf("server GLX_EXTENSIONS: %s\n", (char *) glXQueryServerString( dpy, scr, GLX_EXTENSIONS));
  33
  34    printf("client GLX_VENDOR: %s\n", (char *) glXGetClientString( dpy, GLX_VENDOR));
  35    printf("client GLX_VERSION: %s\n", (char *) glXGetClientString( dpy, GLX_VERSION));
  36    printf("client GLX_EXTENSIONS: %s\n", (char *) glXGetClientString( dpy, GLX_EXTENSIONS));
  37
  38    printf("GLX extensions: %s\n", (char *) glXQueryExtensionsString(dpy, scr));
  39 }
  40
  41
  42
  43
  44 int
  45 main( int argc, char *argv[] )
  46 {
  47    Display *dpy;
  48    Window win;
  49    int attrib[] = { GLX_RGBA,
  50                     GLX_RED_SIZE, 1,
  51                     GLX_GREEN_SIZE, 1,
  52                     GLX_BLUE_SIZE, 1,
  53                     None };
  54    int scrnum;
  55    XSetWindowAttributes attr;
  56    unsigned long mask;
  57    Window root;
  58    GLXContext ctx;
  59    XVisualInfo *visinfo;
  60    int width = 100, height = 100;
  61
  62    dpy = XOpenDisplay(NULL);
  63    if (!dpy) {
  64       fprintf(stderr, "Unable to open default display!\n");
  65       return 1;
  66    }
  67
  68    scrnum = DefaultScreen( dpy );
  69    root = RootWindow( dpy, scrnum );
  70
  71    visinfo = glXChooseVisual( dpy, scrnum, attrib );
  72    if (!visinfo) {
  73       fprintf(stderr, "Error: couldn't find RGB GLX visual!\n");
  74       return 1;
  75    }
  76
  77    /* window attributes */
  78    attr.background_pixel = 0;
  79    attr.border_pixel = 0;
  80    attr.colormap = XCreateColormap( dpy, root, visinfo->visual, AllocNone);
  81    attr.event_mask = StructureNotifyMask | ExposureMask;
  82    mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
  83
  84    win = XCreateWindow( dpy, root, 0, 0, width, height,
  85                         0, visinfo->depth, InputOutput,
  86                         visinfo->visual, mask, &attr );
  87
  88    ctx = glXCreateContext( dpy, visinfo, NULL, True );
  89
  90    glXMakeCurrent( dpy, win, ctx );
  91
  92    query_glx(dpy, scrnum);
  93
  94    glXDestroyContext(dpy, ctx);
  95    XDestroyWindow(dpy, win);
  96    XCloseDisplay(dpy);
  97
  98    return 0;
  99 }