Major cleanup of 3D invariant state, fixing hangs with rotation and render.exa

Now, the generic invariant state is always set while the X Server is active,
and happens automatically when the X Server grabs the DRI lock.  More 3D state
is moved to the generic code.

Then, the 3D consumers (video, rotation, render) set last_3d to their enum
entry, and can update their own invariant state when another consumer was
active.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/i830_dri.c b/src/i830_dri.c
index 8a52750f..b844d334 100644
--- a/src/i830_dri.c
+++ b/src/i830_dri.c
@@ -1000,6 +1000,8 @@ I830DRISwapContext(ScreenPtr pScreen, DRISyncType syncType,
       if (I810_DEBUG & DEBUG_VERBOSE_DRI)
 	 ErrorF("i830DRISwapContext (in)\n");
 
+      pI830->last_3d = LAST_3D_OTHER;
+
       if (!pScrn->vtSema)
      	 return;
       pI830->LockHeld = 1;