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glx: Check flush DRI extension version at runtime

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The DRI driver itself might not have version 3 of the
DRI2 flush extension, in which case this would've
pointed to out of bounds memory...
This commit is contained in:
nobled 2011-05-06 09:39:24 +02:00 • committed by Michel Dänzer
parent 31d27259b6
commit a3e2c8f31f
1 changed files with 3 additions and 2 deletions
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5
src/glx/dri2_glx.c
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@ -679,7 +679,7 @@ dri2InvalidateBuffers(Display *dpy, XID drawable)
struct dri2_drawable *pdp = (struct dri2_drawable *) pdraw;
#if __DRI2_FLUSH_VERSION >= 3
if (pdraw && psc->f)
if (pdraw && psc->f && psc->f->base.version >= 3 && psc->f->invalidate)
psc->f->invalidate(pdp->driDrawable);
#endif
}
@ -702,7 +702,8 @@ dri2_bind_tex_image(Display * dpy,
psc = (struct dri2_screen *) base->psc;
#if __DRI2_FLUSH_VERSION >= 3
if (!pdp->invalidateAvailable && psc->f)
if (!pdp->invalidateAvailable && psc->f &&
psc->f->base.version >= 3 && psc->f->invalidate)
psc->f->invalidate(pdraw->driDrawable);
#endif