diff options
Diffstat (limited to 'xorg-server/hw')
| -rw-r--r-- | xorg-server/hw/xwin/glx/indirect.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/xorg-server/hw/xwin/glx/indirect.c b/xorg-server/hw/xwin/glx/indirect.c index 9660dc151..4367d6990 100644 --- a/xorg-server/hw/xwin/glx/indirect.c +++ b/xorg-server/hw/xwin/glx/indirect.c @@ -717,17 +717,37 @@ glxWinScreenProbe(ScreenPtr pScreen) screen->base.swapInterval = glxWinScreenSwapInterval;
screen->base.pScreen = pScreen;
+ // Creating the fbConfigs initializes screen->base.fbconfigs and screen->base.numFBConfigs
if (strstr(wgl_extensions, "WGL_ARB_pixel_format"))
{
glxWinCreateConfigsExt(hdc, screen);
- screen->has_WGL_ARB_pixel_format = TRUE;
+
+ /*
+ Some graphics drivers appear to advertise WGL_ARB_pixel_format,
+ but it doesn't work usefully, so we have to be prepared for it
+ to fail and fall back to using DescribePixelFormat()
+ */
+ if (screen->base.numFBConfigs > 0)
+ {
+ screen->has_WGL_ARB_pixel_format = TRUE;
+ }
}
- else
+
+ if (screen->base.numFBConfigs <= 0)
{
glxWinCreateConfigs(hdc, screen);
screen->has_WGL_ARB_pixel_format = FALSE;
}
- // Initializes screen->base.fbconfigs and screen->base.numFBConfigs
+
+ /*
+ If we still didn't get any fbConfigs, we can't provide GLX for this screen
+ */
+ if (screen->base.numFBConfigs <= 0)
+ {
+ free(screen);
+ LogMessage(X_ERROR,"AIGLX: No fbConfigs could be made from native OpenGL pixel formats\n");
+ return NULL;
+ }
/* These will be set by __glXScreenInit */
screen->base.visuals = NULL;
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