Mesa (master): draw: add small ybias factor for drawing wide points

[Brian Paul]

Module: Mesa
Branch: master
Commit: 41e7347a173693e9cf9ec41151a38e89627ed54f
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=41e7347a173693e9cf9ec41151a38e89627ed54f

Author: Brian Paul <brianp at vmware.com>
Date:   Fri Jul 23 10:32:25 2010 -0600

draw: add small ybias factor for drawing wide points

Fixes minor rasterization error detected by some tests.

---

 src/gallium/auxiliary/draw/draw_pipe_wide_point.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/src/gallium/auxiliary/draw/draw_pipe_wide_point.c b/src/gallium/auxiliary/draw/draw_pipe_wide_point.c
index 3e6e538..ee2945c 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_wide_point.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_wide_point.c
@@ -226,6 +226,7 @@ static void widepoint_first_point( struct draw_stage *stage,
 
    if (rast->gl_rasterization_rules) {
       wide->xbias = 0.125;
+      wide->ybias = -0.125;
    }
 
    /* Disable triangle culling, stippling, unfilled mode etc. */