From: José Fonseca <jfonseca@vmware.com>
Date: Wed, 10 Feb 2010 11:25:26 +0000 (+0000)
Subject: llvmpipe: Fix null pointer dereference when no depth buffer is bound.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ba33fed6106609ed04612b46011e28fab69d2310;p=mesa.git

llvmpipe: Fix null pointer dereference when no depth buffer is bound.
---

diff --git a/src/gallium/drivers/llvmpipe/lp_rast_priv.h b/src/gallium/drivers/llvmpipe/lp_rast_priv.h
index 4760d337c64..5c5497e0929 100644
--- a/src/gallium/drivers/llvmpipe/lp_rast_priv.h
+++ b/src/gallium/drivers/llvmpipe/lp_rast_priv.h
@@ -139,6 +139,9 @@ lp_rast_depth_pointer( struct lp_rasterizer *rast,
    void * depth;
    assert((x % TILE_VECTOR_WIDTH) == 0);
    assert((y % TILE_VECTOR_HEIGHT) == 0);
+   if(!rast->zsbuf_map)
+      return NULL;
+   assert(rast->zsbuf_transfer);
    depth = rast->zsbuf_map +
            y*rast->zsbuf_transfer->stride +
            TILE_VECTOR_HEIGHT*x*util_format_get_blocksize(rast->zsbuf_transfer->texture->format);