Mesa (master): glx: Only call DRI2 invalidate when necessary

[Kristian Høgsberg]

Module: Mesa
Branch: master
Commit: 2d00d16da7f5d2255cb37b48edaf4cbb9ca7e930
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2d00d16da7f5d2255cb37b48edaf4cbb9ca7e930

Author: Kristian Høgsberg <krh at bitplanet.net>
Date:   Mon May 10 15:51:31 2010 -0400

glx: Only call DRI2 invalidate when necessary

We only need this when the server may have swapped the buffers or
when we receive an invalidate event from the server.  The default
behaviour is still that the DRI driver will invalidate its own buffers
when glViewport is called.

https://bugs.freedesktop.org/show_bug.cgi?id=27277

---

 src/glx/dri2_glx.c |   16 ++++------------
 1 files changed, 4 insertions(+), 12 deletions(-)

diff --git a/src/glx/dri2_glx.c b/src/glx/dri2_glx.c
index 6058c72..ca2a753 100644
--- a/src/glx/dri2_glx.c
+++ b/src/glx/dri2_glx.c
@@ -359,14 +359,6 @@ dri2WaitGL(__GLXDRIdrawable * pdraw)
 static void
 dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate)
 {
-   __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
-   __GLXdisplayPrivate *priv = __glXInitialize(pdraw->base.psc->dpy);
-   __GLXDRIdisplayPrivate *pdp = (__GLXDRIdisplayPrivate *)priv->dri2Display;
-
-   /* Old servers don't send invalidate events */
-   if (!pdp->invalidateAvailable)
-       dri2InvalidateBuffers(priv->dpy, pdraw->base.drawable);
-
    dri2WaitGL(loaderPrivate);
 }
 
@@ -427,16 +419,16 @@ dri2SwapBuffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
     	(*pdraw->psc->f->flush)(pdraw->driDrawable);
 #endif
 
-    /* Old servers don't send invalidate events */
-    if (!pdp->invalidateAvailable)
-       dri2InvalidateBuffers(dpyPriv->dpy, pdraw->drawable);
-
     /* Old servers can't handle swapbuffers */
     if (!pdp->swapAvailable) {
        dri2CopySubBuffer(pdraw, 0, 0, priv->width, priv->height);
        return 0;
     }
 
+    /* Old servers don't send invalidate events */
+    if (!pdp->invalidateAvailable)
+       dri2InvalidateBuffers(dpyPriv->dpy, pdraw->drawable);
+
 #ifdef X_DRI2SwapBuffers
     DRI2SwapBuffers(pdraw->psc->dpy, pdraw->xDrawable, target_msc, divisor,
 		    remainder, &ret);