Mesa (master): radeon: avoid segfault on 3D textures.

[Dave Airlie]

Module: Mesa
Branch: master
Commit: a5da4acb9583db5289fcad410513d0fedcf9bab2
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=a5da4acb9583db5289fcad410513d0fedcf9bab2

Author: Dave Airlie <airlied at redhat.com>
Date:   Wed Jan 19 16:27:13 2011 +1000

radeon: avoid segfault on 3D textures.

This is a candidate for 7.9 and 7.10

---

 src/mesa/drivers/dri/radeon/radeon_state.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/radeon/radeon_state.c b/src/mesa/drivers/dri/radeon/radeon_state.c
index ca42aa3..e88e984 100644
--- a/src/mesa/drivers/dri/radeon/radeon_state.c
+++ b/src/mesa/drivers/dri/radeon/radeon_state.c
@@ -2091,6 +2091,9 @@ static GLboolean r100ValidateBuffers(struct gl_context *ctx)
 	 continue;
 
       t = rmesa->state.texture.unit[i].texobj;
+
+      if (!t)
+	 continue;
       if (t->image_override && t->bo)
 	radeon_cs_space_add_persistent_bo(rmesa->radeon.cmdbuf.cs, t->bo,
 			   RADEON_GEM_DOMAIN_GTT | RADEON_GEM_DOMAIN_VRAM, 0);