Recently, I tried to upgrade the Motif library (libXm.so) to a newer version (2.3.3) with XFT support for rendering mutli-language characters.
I ran the application and an very annoying X error occurs sometimes (many hours) randomly:
RenderBadPicture (invalid Picture parameter) in RenderChangePicture, RenderCompositeGlyphs8 or RenderSetPictureClipRectangles in extension RENDER.
Error is produced asynchronously first by X11 low-level libraries. This is a summary of the back trace.
_XError
_XReply
XQueryColor
_XmXftDrawString
_XmStringDrawSegment
XmStringDraw
XtDispatchEventToWidget
XtDispatchEvent
XtAppProcessEvent
main
Back trace could change a little from a crash to an other.
Please see an example in my code to draw a string in a drawable:
XftDraw xftDraw = XftDrawCreate(dpy, drawable, DefaultVisual(dpy, screenNum), colormap);
XftDrawStringUtf8(xftDraw, xftcolor, xftFont, x, y, (const FcChar8*)line, strlen(line));
XftDrawDestroy(xftDraw);
Running on:
- CentOS 6.5.
- X version 11 Revision 6 (Xft 2.3.1)
- single thread
Question: Crash is unreproductible, have you some idea about a possible origin of this error ?
