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authorBrian Paul <brianp@vmware.com>2010-01-13 09:29:43 -0700
committerBrian Paul <brianp@vmware.com>2010-01-13 09:32:21 -0700
commit212f3a6cb3cb49127a6e5588553fe2d327f46563 (patch)
tree6ff60cb73f91564b9c0be2e90387490254b3f668 /src/gallium
parentdb83ad4b4353ea6f9c755f18bf1455ea78b5bf12 (diff)
llvmpipe: tweak subpixel_snap() arithmetic
This adjustment fixes some rasterization differences between llvmpipe and softpipe (and other renderers).
Diffstat (limited to 'src/gallium')
-rw-r--r--src/gallium/drivers/llvmpipe/lp_setup_tri.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_setup_tri.c b/src/gallium/drivers/llvmpipe/lp_setup_tri.c
index 9248125de8..575265b0f5 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup_tri.c
+++ b/src/gallium/drivers/llvmpipe/lp_setup_tri.c
@@ -237,7 +237,7 @@ static void setup_tri_coefficients( struct setup_context *setup,
static inline int subpixel_snap( float a )
{
- return util_iround(FIXED_ONE * a);
+ return util_iround(FIXED_ONE * a - (FIXED_ONE / 2));
}