diff options
Diffstat (limited to 'progs/xdemos/glxinfo.c')
| -rw-r--r-- | progs/xdemos/glxinfo.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/progs/xdemos/glxinfo.c b/progs/xdemos/glxinfo.c index b182a3091d..23df82f6f9 100644 --- a/progs/xdemos/glxinfo.c +++ b/progs/xdemos/glxinfo.c @@ -401,6 +401,10 @@ print_screen_info(Display *dpy, int scrnum, Bool allowDirect, GLboolean limits) root = RootWindow(dpy, scrnum); + /* + * Find a basic GLX visual. We'll then create a rendering context and + * query various info strings. + */ visinfo = glXChooseVisual(dpy, scrnum, attribSingle); if (!visinfo) visinfo = glXChooseVisual(dpy, scrnum, attribDouble); @@ -409,24 +413,29 @@ print_screen_info(Display *dpy, int scrnum, Bool allowDirect, GLboolean limits) ctx = glXCreateContext( dpy, visinfo, NULL, allowDirect ); #ifdef GLX_VERSION_1_3 - { + /* Try glXChooseFBConfig() if glXChooseVisual didn't work. + * XXX when would that happen? + */ + if (!visinfo) { int fbAttribSingle[] = { GLX_RENDER_TYPE, GLX_RGBA_BIT, GLX_RED_SIZE, 1, GLX_GREEN_SIZE, 1, GLX_BLUE_SIZE, 1, - GLX_DOUBLEBUFFER, GL_TRUE, + GLX_DOUBLEBUFFER, GL_FALSE, None }; int fbAttribDouble[] = { GLX_RENDER_TYPE, GLX_RGBA_BIT, GLX_RED_SIZE, 1, GLX_GREEN_SIZE, 1, GLX_BLUE_SIZE, 1, + GLX_DOUBLEBUFFER, GL_TRUE, None }; GLXFBConfig *configs = NULL; int nConfigs; - if (!visinfo) + configs = glXChooseFBConfig(dpy, scrnum, fbAttribSingle, &nConfigs); + if (!configs) configs = glXChooseFBConfig(dpy, scrnum, fbAttribDouble, &nConfigs); if (configs) { |