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glx/dri2: Fix dri2CopySubBuffer() again.

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Only refresh the fake front buffer if there is one, and only destroy the region
once.

Fixes X11 protocol errors reported by 'mcgreg' on IRC.
This commit is contained in:
Michel Dänzer 2010-07-20 12:21:17 +02:00 • committed by Michel Dänzer
parent bdde9d2fce
commit bd3d2724f5
1 changed files with 4 additions and 3 deletions
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3
src/glx/dri2_glx.c
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@ -352,13 +352,14 @@ dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y, int width, int height)
region = XFixesCreateRegion(psc->base.dpy, &xrect, 1);
DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
DRI2BufferFrontLeft, DRI2BufferBackLeft);
XFixesDestroyRegion(psc->base.dpy, region);
/* Refresh the fake front (if present) after we just damaged the real
* front.
*/
if (priv->have_fake_front)
DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
XFixesDestroyRegion(psc->base.dpy, region);
}