Module: Mesa
Branch: master
Commit: 4272c01fbfd42833e4e0937bed84e45fe5da52b9
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=4272c01fbfd42833e4e0937bed84e45fe5da52b9
Author: José Fonseca <jfons...@vmware.com>
Date: Sun Apr 18 09:48:55 2010 +0200
softpipe: Preserve/check the signal of the number of scanlines in an edge.
It can become negative in some weird triangles.
---
src/gallium/drivers/softpipe/sp_setup.c | 3 ++-
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 85966bc..e136cb7 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;
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