Disable XRender if bit masks aren't valid.

XRender code in the X11 driver will go into an infinite loop when the colour bit masks are 0, so disable XRender in this case.

Disable XRender if bit masks aren't valid.
2ff51299 · Robert Shearman · Alexandre Julliard · 2d5dc32f · 2ff51299
Commit 2ff51299 authored Nov 30, 2005 by Robert Shearman Committed by Alexandre Julliard Nov 30, 2005
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xrender.c dlls/x11drv/xrender.c +4 -0

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--- a/dlls/x11drv/xrender.c
+++ b/dlls/x11drv/xrender.c
@@ -239,6 +239,10 @@ LOAD_OPTIONAL_FUNCPTR(XRenderSetPictureTransform)
                ERR("mono_format == NULL?\n");
                X11DRV_XRender_Installed = FALSE;
            }
+            if (!visual->red_mask || !visual->green_mask || !visual->blue_mask) {
+                WARN("one or more of the colour masks are 0, disabling XRENDER. Try running in 16-bit mode or higher.\n");
+                X11DRV_XRender_Installed = FALSE;
+            }
        }
        wine_tsx11_unlock();
    }