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authorEric Anholt <eric@anholt.net>2007-01-05 18:19:58 -0800
committerEric Anholt <eric@anholt.net>2007-01-05 18:23:57 -0800
commitc2b185cff82a6cdb723cda4e05ffe1a213a9de3e (patch)
treebdaa0ae2352ed0c1b53fdacfc449e1c392e45744 /src/mesa/drivers/dri/common
parentb530d96216f8a01e2dd4100941f6b1aa4d9dfbcd (diff)
Add reporting of damage by DRI drivers when the extension support is available.
With this, tools like ximagesrc in gstreamer correctly see updates from GL rendering. Support requires that the Xdamage library be current (but will be disabled if not present) plus a new X Server with support for the new XDamagePost request. libGL now has a new interface version, and also links against libXdamage and libXfixes to support it, but backwards compatibility is retained. Currently, all drivers report damage at SwapBuffers time through common code -- front buffer rendering doesn't result in damage being reported. Also, the damage is against the root window, as our drivers don't yet render to backing store when they should (composited environments).
Diffstat (limited to 'src/mesa/drivers/dri/common')
-rw-r--r--src/mesa/drivers/dri/common/dri_util.c21
1 files changed, 20 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/common/dri_util.c b/src/mesa/drivers/dri/common/dri_util.c
index ba251a8143..cc3dcf9d8d 100644
--- a/src/mesa/drivers/dri/common/dri_util.c
+++ b/src/mesa/drivers/dri/common/dri_util.c
@@ -482,8 +482,27 @@ __driUtilUpdateDrawableInfo(__DRIdrawablePrivate *pdp)
static void driSwapBuffers( __DRInativeDisplay *dpy, void *drawablePrivate )
{
__DRIdrawablePrivate *dPriv = (__DRIdrawablePrivate *) drawablePrivate;
+ drm_clip_rect_t rect;
+
dPriv->swapBuffers(dPriv);
- (void) dpy;
+
+ /* Check that we actually have the new damage report method */
+ if (api_ver < 20070105 || dri_interface->reportDamage == NULL)
+ return;
+
+ /* Assume it's affecting the whole drawable for now */
+ rect.x1 = 0;
+ rect.y1 = 0;
+ rect.x2 = rect.x1 + dPriv->w;
+ rect.y2 = rect.y1 + dPriv->h;
+
+ /* Report the damage. Currently, all our drivers draw directly to the
+ * front buffer, so we report the damage there rather than to the backing
+ * store (if any).
+ */
+ (*dri_interface->reportDamage)(dpy, dPriv->screen, dPriv->draw,
+ dPriv->x, dPriv->y,
+ &rect, 1, GL_TRUE);
}
/**