From 764c172aa96d48e1cf18b903661064c1ef8df1b5 Mon Sep 17 00:00:00 2001
From: José Fonseca <jfonseca@vmware.com>
Date: Thu, 11 Feb 2010 10:58:46 +0000
Subject: llvmpipe: Clamp both extremes of triangles to framebuffer size.
Fix segmentation fault when triangles crossed the axis.
---
src/gallium/drivers/llvmpipe/lp_setup_tri.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
(limited to 'src/gallium/drivers/llvmpipe')
diff --git a/src/gallium/drivers/llvmpipe/lp_setup_tri.c b/src/gallium/drivers/llvmpipe/lp_setup_tri.c
index 9e59a6602c..a8bf540803 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup_tri.c
+++ b/src/gallium/drivers/llvmpipe/lp_setup_tri.c
@@ -442,8 +442,11 @@ do_triangle_ccw(struct setup_context *setup,
maxx = maxx / TILE_SIZE;
maxy = maxy / TILE_SIZE;
- /* Clamp maxx, maxy to framebuffer size
+ /*
+ * Clamp to framebuffer size
*/
+ minx = MAX2(minx, 0);
+ miny = MAX2(miny, 0);
maxx = MIN2(maxx, scene->tiles_x - 1);
maxy = MIN2(maxy, scene->tiles_y - 1);
--
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