st/nine: Fix use of uninitialized memory

The values of box.z and box.depth weren't set and lead to a crash.

Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Axel Davy <axel.davy@ens.fr>

2 files changed, 13 insertions, 1 deletions

diff --git a/src/gallium/auxiliary/util/u_box.h b/src/gallium/auxiliary/util/u_box.h
index 66cf989a83..00f231dc68 100644
--- a/src/gallium/auxiliary/util/u_box.h
+++ b/src/gallium/auxiliary/util/u_box.h
@@ -195,4 +195,16 @@ u_box_minify_2d(struct pipe_box *dst,
    dst->height = MAX2(src->height >> l, 1);
 }
 
+static inline void
+u_box_minify_3d(struct pipe_box *dst,
+                const struct pipe_box *src, unsigned l)
+{
+   dst->x = src->x >> l;
+   dst->y = src->y >> l;
+   dst->z = src->z >> l;
+   dst->width = MAX2(src->width >> l, 1);
+   dst->height = MAX2(src->height >> l, 1);
+   dst->depth = MAX2(src->depth >> l, 1);
+}
+
 #endif
diff --git a/src/gallium/state_trackers/nine/basetexture9.c b/src/gallium/state_trackers/nine/basetexture9.c
index d13138b7d5..7a0959a8f3 100644
--- a/src/gallium/state_trackers/nine/basetexture9.c
+++ b/src/gallium/state_trackers/nine/basetexture9.c
@@ -319,7 +319,7 @@ NineBaseTexture9_UploadSelf( struct NineBaseTexture9 *This )
 
             if (tex->dirty_box.width) {
                 for (l = min_level_dirty; l <= last_level; ++l) {
-                    u_box_minify_2d(&box, &tex->dirty_box, l);
+                    u_box_minify_3d(&box, &tex->dirty_box, l);
                     NineVolume9_UploadSelf(tex->volumes[l], &box);
                 }
                 memset(&tex->dirty_box, 0, sizeof(tex->dirty_box));