[Mesa-dev] [PATCH] Fix for throwing BadDrawable (invalid Pixmap or Window parameter) by Xserver

[Alexander Monakov]

On Thu, Sep 5, 2013 at 6:25 PM, Maniak, Lukasz <lukasz.maniak at intel.com> wrote:
> Original explanatory text:
>
>     Fix for throwing BadDrawable (invalid Pixmap or Window parameter)
>     by Xserver when calling XCreatePixmap or fill_bitmap from
>     DRI_glXUseXFont.
>
>     currentDrawable which came from __glXGetCurrentContext was not correct in
>     this case, we use DefaultRootWindow(dpy) instead.
>
> To reproduce this error you just have to call this:
>
> dpy = (machine.display)->handle();
> fontStruct = XLoadQueryFont(dpy, "fixed");
> int firstGlyph = fontStruct->min_char_or_byte2;
> int dispListBase = 1;
> glXUseXFont(fontStruct->fid, firstGlyph, 1, dispListBase);

But it doesn't make sense to call glXUseXFont without a current context.

> And you will get this:
>
> X Error of failed request: BadDrawable (invalid Pixmap or Window parameter)
> Major opcode of failed request: 53 (X_CreatePixmap)
>
> Feedback from CC reporters would be really helpful.

Ian added me as the reporter of bug 54080, but that issue does not
reference glXUseXFont at all.

Alexander