From: Eric Anholt <eric@anholt.net>
Date: Tue, 28 Jul 2015 06:23:57 +0000 (-0700)
Subject: vc4: Fix raster surface shadow updates under DRI2.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=95faf2c6397ce231e94176d18cf8fd2c3265bb8a;p=mesa.git

vc4: Fix raster surface shadow updates under DRI2.

Glamor asks GBM for the handle of the BO, then flinks it itself.  We
were marking the bo non-private in the flink and dmabuf (DRI3) paths,
but not the GEM handle path.  As a result, non-pageflipping DRI2
swapbuffers (EGL apps, in particular) were never updating the texture.
---

diff --git a/src/gallium/drivers/vc4/vc4_screen.c b/src/gallium/drivers/vc4/vc4_screen.c
index c069454c2d1..a20818da4d2 100644
--- a/src/gallium/drivers/vc4/vc4_screen.c
+++ b/src/gallium/drivers/vc4/vc4_screen.c
@@ -490,6 +490,12 @@ vc4_screen_bo_get_handle(struct pipe_screen *pscreen,
 {
         whandle->stride = stride;
 
+        /* If we're passing some reference to our BO out to some other part of
+         * the system, then we can't do any optimizations about only us being
+         * the ones seeing it (like BO caching or shadow update avoidance).
+         */
+        bo->private = false;
+
         switch (whandle->type) {
         case DRM_API_HANDLE_TYPE_SHARED:
                 return vc4_bo_flink(bo, &whandle->handle);