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authorJosé Fonseca <jfonseca@vmware.com>2010-04-18 09:48:55 +0200
committerJosé Fonseca <jfonseca@vmware.com>2010-04-18 10:36:28 +0200
commit4272c01fbfd42833e4e0937bed84e45fe5da52b9 (patch)
tree5dd5ca13c18efa2714560d26f547fd4199fd02fb /src
parentb609cfc7c9c38f26e7e6d6f7dd5dd6d38f4ed209 (diff)
softpipe: Preserve/check the signal of the number of scanlines in an edge.
It can become negative in some weird triangles.
Diffstat (limited to 'src')
-rw-r--r--src/gallium/drivers/softpipe/sp_setup.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/gallium/drivers/softpipe/sp_setup.c b/src/gallium/drivers/softpipe/sp_setup.c
index 85966bc5e4..e136cb7cf7 100644
--- a/src/gallium/drivers/softpipe/sp_setup.c
+++ b/src/gallium/drivers/softpipe/sp_setup.c
@@ -691,7 +691,7 @@ static void setup_tri_edges( struct setup_context *setup )
static void subtriangle( struct setup_context *setup,
struct edge *eleft,
struct edge *eright,
- unsigned lines )
+ int lines )
{
const struct pipe_scissor_state *cliprect = &setup->softpipe->cliprect;
const int minx = (int) cliprect->minx;
@@ -702,6 +702,7 @@ static void subtriangle( struct setup_context *setup,
int sy = (int)eleft->sy;
assert((int)eleft->sy == (int) eright->sy);
+ assert(lines >= 0);
/* clip top/bottom */
start_y = sy;