Mesa (master): mesa/st: Fix piglit read-front with new drawable invalidation v2
Thomas Hellstrom
thomash at kemper.freedesktop.org
Fri Jul 8 06:39:00 UTC 2011
Module: Mesa
Branch: master
Commit: a65e9706035c0e348307e76fdeeed0910ec8c68e
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=a65e9706035c0e348307e76fdeeed0910ec8c68e
Author: Thomas Hellstrom <thellstrom at vmware.com>
Date: Fri Jul 8 08:26:29 2011 +0200
mesa/st: Fix piglit read-front with new drawable invalidation v2
When the state tracker adds a front buffer, nothing triggers a validate
drawable call, since the state tracker manager is never notified.
Force a validate drawable call by invalidating the framebuffer's stamp, so
that the window system's renderbuffer (if any) is picked up.
This fixes bug 38988
https://bugs.freedesktop.org/show_bug.cgi?id=38988
Signed-off-by: Thomas Hellstrom <thellstrom at vmware.com>
---
src/mesa/state_tracker/st_manager.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/src/mesa/state_tracker/st_manager.c b/src/mesa/state_tracker/st_manager.c
index a8c4b5c..7bd82aa 100644
--- a/src/mesa/state_tracker/st_manager.c
+++ b/src/mesa/state_tracker/st_manager.c
@@ -918,6 +918,15 @@ st_manager_add_color_renderbuffer(struct st_context *st,
return FALSE;
st_framebuffer_update_attachments(stfb);
+
+ /*
+ * Force a call to the state tracker manager to validate the
+ * new renderbuffer. It might be that there is a window system
+ * renderbuffer available.
+ */
+ if(stfb->iface)
+ stfb->iface_stamp = p_atomic_read(&stfb->iface->stamp) - 1;
+
st_invalidate_state(st->ctx, _NEW_BUFFERS);
return TRUE;
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