pbuffer info and demo programs
diff --git a/progs/xdemos/pbinfo.c b/progs/xdemos/pbinfo.c
new file mode 100644
index 0000000..e4e5281
--- /dev/null
+++ b/progs/xdemos/pbinfo.c
@@ -0,0 +1,133 @@
+/* $Id: pbinfo.c,v 1.1 2002/10/05 18:30:13 brianp Exp $ */
+
+/*
+ * Print list of fbconfigs and test each to see if a pbuffer can be created
+ * for that config.
+ *
+ * Brian Paul
+ * April 1997
+ * Updated on 5 October 2002.
+ */
+
+
+#include <X11/Xlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "pbutil.h"
+
+
+
+
+static void
+PrintConfigs(Display *dpy, int screen, Bool horizFormat)
+{
+ GLXFBConfigSGIX *fbConfigs;
+ int nConfigs;
+ int i;
+ /* Note: you may want to tweek the attribute list to select a different
+ * set of fbconfigs.
+ */
+ int fbAttribs[] = {
+ GLX_RENDER_TYPE_SGIX, 0,
+ GLX_DRAWABLE_TYPE_SGIX, 0,
+#if 0
+ GLX_RENDER_TYPE_SGIX, GLX_RGBA_BIT_SGIX,
+ GLX_DRAWABLE_TYPE_SGIX, GLX_PIXMAP_BIT_SGIX,
+ GLX_RED_SIZE, 1,
+ GLX_GREEN_SIZE, 1,
+ GLX_BLUE_SIZE, 1,
+ GLX_DEPTH_SIZE, 1,
+ GLX_DOUBLEBUFFER, 0,
+ GLX_STENCIL_SIZE, 0,
+#endif
+ None};
+
+
+ /* Get list of possible frame buffer configurations */
+#if 0
+ /* SGIX method */
+ fbConfigs = glXChooseFBConfigSGIX(dpy, screen, fbAttribs, &nConfigs);
+#else
+ /* GLX 1.3 method */
+ fbConfigs = glXGetFBConfigs(dpy, screen, &nConfigs);
+#endif
+
+ if (nConfigs==0 || !fbConfigs) {
+ printf("Error: glxChooseFBConfigSGIX failed\n");
+ return;
+ }
+
+ printf("Number of fbconfigs: %d\n", nConfigs);
+
+ if (horizFormat) {
+ printf(" ID VisualType Depth Lvl RGB CI DB Stereo R G B A");
+ printf(" Z S AR AG AB AA MSbufs MSnum Pbuffer\n");
+ }
+
+ /* Print config info */
+ for (i=0;i<nConfigs;i++) {
+ PrintFBConfigInfo(dpy, fbConfigs[i], horizFormat);
+ }
+
+ /* free the list */
+ XFree(fbConfigs);
+}
+
+
+
+static void
+PrintUsage(void)
+{
+ printf("Options:\n");
+ printf(" -display <display-name> specify X display name\n");
+ printf(" -t print in tabular format\n");
+ printf(" -v print in verbose format\n");
+ printf(" -help print this information\n");
+}
+
+
+int
+main(int argc, char *argv[])
+{
+ Display *dpy;
+ int scrn;
+ char *dpyName = NULL;
+ Bool horizFormat = True;
+ int i;
+
+ for (i=1; i<argc; i++) {
+ if (strcmp(argv[i],"-display")==0) {
+ if (i+1<argc) {
+ dpyName = argv[i+1];
+ i++;
+ }
+ }
+ else if (strcmp(argv[i],"-t")==0) {
+ /* tabular format */
+ horizFormat = True;
+ }
+ else if (strcmp(argv[i],"-v")==0) {
+ /* verbose format */
+ horizFormat = False;
+ }
+ else if (strcmp(argv[i],"-help")==0) {
+ PrintUsage();
+ return 0;
+ }
+ else {
+ printf("Unknown option: %s\n", argv[i]);
+ }
+ }
+
+ dpy = XOpenDisplay(dpyName);
+
+ if (!dpy) {
+ printf("Error: couldn't open display %s\n", dpyName ? dpyName : ":0");
+ return 1;
+ }
+
+ scrn = DefaultScreen(dpy);
+ PrintConfigs(dpy, scrn, horizFormat);
+ XCloseDisplay(dpy);
+ return 0;
+}