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-rw-r--r--progs/xdemos/glxinfo.c59
1 files changed, 46 insertions, 13 deletions
diff --git a/progs/xdemos/glxinfo.c b/progs/xdemos/glxinfo.c
index 329cbb3e0a..db7d1ed08e 100644
--- a/progs/xdemos/glxinfo.c
+++ b/progs/xdemos/glxinfo.c
@@ -395,20 +395,61 @@ print_screen_info(Display *dpy, int scrnum, Bool allowDirect, GLboolean limits)
XSetWindowAttributes attr;
unsigned long mask;
Window root;
- GLXContext ctx;
+ GLXContext ctx = NULL;
XVisualInfo *visinfo;
int width = 100, height = 100;
root = RootWindow(dpy, scrnum);
visinfo = glXChooseVisual(dpy, scrnum, attribSingle);
- if (!visinfo) {
+ if (!visinfo)
visinfo = glXChooseVisual(dpy, scrnum, attribDouble);
- if (!visinfo) {
- fprintf(stderr, "Error: couldn't find RGB GLX visual\n");
- return;
+
+ if (visinfo)
+ ctx = glXCreateContext( dpy, visinfo, NULL, allowDirect );
+
+#ifdef GLX_VERSION_1_3
+ {
+ int fbAttribSingle[] = {
+ GLX_RENDER_TYPE, GLX_RGBA_BIT,
+ GLX_RED_SIZE, 1,
+ GLX_GREEN_SIZE, 1,
+ GLX_BLUE_SIZE, 1,
+ GLX_DOUBLEBUFFER, GL_TRUE,
+ None };
+ int fbAttribDouble[] = {
+ GLX_RENDER_TYPE, GLX_RGBA_BIT,
+ GLX_RED_SIZE, 1,
+ GLX_GREEN_SIZE, 1,
+ GLX_BLUE_SIZE, 1,
+ None };
+ GLXFBConfig *configs = NULL;
+ int nConfigs;
+
+ if (!visinfo)
+ configs = glXChooseFBConfig(dpy, scrnum, fbAttribSingle, &nConfigs);
+ if (!visinfo)
+ configs = glXChooseFBConfig(dpy, scrnum, fbAttribDouble, &nConfigs);
+
+ if (configs) {
+ visinfo = glXGetVisualFromFBConfig(dpy, configs[0]);
+ ctx = glXCreateNewContext(dpy, configs[0], GLX_RGBA_TYPE, NULL, allowDirect);
+ XFree(configs);
}
}
+#endif
+
+ if (!visinfo) {
+ fprintf(stderr, "Error: couldn't find RGB GLX visual or fbconfig\n");
+ return;
+ }
+
+ if (!ctx) {
+ fprintf(stderr, "Error: glXCreateContext failed\n");
+ XFree(visinfo);
+ XDestroyWindow(dpy, win);
+ return;
+ }
attr.background_pixel = 0;
attr.border_pixel = 0;
@@ -419,14 +460,6 @@ print_screen_info(Display *dpy, int scrnum, Bool allowDirect, GLboolean limits)
0, visinfo->depth, InputOutput,
visinfo->visual, mask, &attr);
- ctx = glXCreateContext( dpy, visinfo, NULL, allowDirect );
- if (!ctx) {
- fprintf(stderr, "Error: glXCreateContext failed\n");
- XFree(visinfo);
- XDestroyWindow(dpy, win);
- return;
- }
-
if (glXMakeCurrent(dpy, win, ctx)) {
const char *serverVendor = glXQueryServerString(dpy, scrnum, GLX_VENDOR);
const char *serverVersion = glXQueryServerString(dpy, scrnum, GLX_VERSION);