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-rw-r--r--src/mesa/swrast/s_triangle.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mesa/swrast/s_triangle.c b/src/mesa/swrast/s_triangle.c
index 1d2fed7169..1ab0e19f92 100644
--- a/src/mesa/swrast/s_triangle.c
+++ b/src/mesa/swrast/s_triangle.c
@@ -61,7 +61,7 @@ _swrast_culltriangle( GLcontext *ctx,
GLfloat fy = v2->attrib[FRAG_ATTRIB_WPOS][1] - v0->attrib[FRAG_ATTRIB_WPOS][1];
GLfloat c = ex*fy-ey*fx;
- if (c * swrast->_BackfaceSign * swrast->_BackfaceCullSign < 0.0F)
+ if (c * swrast->_BackfaceSign * swrast->_BackfaceCullSign <= 0.0F)
return GL_FALSE;
return GL_TRUE;