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glx: Don't try to swap a front buffer if we don't have one.

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Fixes glean glsl1 since 7b7845a076
This commit is contained in:
Eric Anholt 2010-07-23 13:41:13 -07:00
parent a2eb8bdcc7
commit 9a12a3925a
1 changed files with 2 additions and 1 deletions
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3
src/glx/dri2_glx.c
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@ -423,12 +423,13 @@ dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate)
struct dri2_drawable *pdraw = loaderPrivate;
__GLXdisplayPrivate *priv = __glXInitialize(pdraw->base.psc->dpy);
struct dri2_display *pdp = (struct dri2_display *)priv->dri2Display;
GLXContext gc = __glXGetCurrentContext();
/* Old servers don't send invalidate events */
if (!pdp->invalidateAvailable)
dri2InvalidateBuffers(priv->dpy, pdraw->base.drawable);
dri2_copy_drawable(pdraw, DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
dri2_wait_gl(gc);
}