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Diffstat (limited to 'src/mesa/pipe/draw/draw_twoside.c')
-rw-r--r--src/mesa/pipe/draw/draw_twoside.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mesa/pipe/draw/draw_twoside.c b/src/mesa/pipe/draw/draw_twoside.c
index fdda6b362f..20b2b4a8aa 100644
--- a/src/mesa/pipe/draw/draw_twoside.c
+++ b/src/mesa/pipe/draw/draw_twoside.c
@@ -53,9 +53,9 @@ static void twoside_begin( struct draw_stage *stage )
/*
* We'll multiply the primitive's determinant by this sign to determine
* if the triangle is back-facing (negative).
- * sign = 1 for CCW, -1 for CW
+ * sign = -1 for CCW, +1 for CW
*/
- twoside->sign = (stage->draw->setup.front_winding == PIPE_WINDING_CCW) ? 1 : -1;
+ twoside->sign = (stage->draw->setup.front_winding == PIPE_WINDING_CCW) ? -1 : 1;
stage->next->begin( stage->next );
}