small fix by jal regarding normal vectors from lighting

[xonotic/netradiant.git] / tools / quake3 / q3map2 / light_ydnar.c

diff --git a/tools/quake3/q3map2/light_ydnar.c b/tools/quake3/q3map2/light_ydnar.c
index 4b02805986fe1ca18adf74597a732676d2a09c0e..3207928b71364061914a3905801fe655e4126b39 100644 (file)
--- a/tools/quake3/q3map2/light_ydnar.c
+++ b/tools/quake3/q3map2/light_ydnar.c
@@ -1425,7 +1425,7 @@ float DirtForSample( trace_t *trace )
        VectorCopy( trace->normal, normal );
        
        /* check if the normal is aligned to the world-up */
-       if( normal[ 0 ] == 0.0f && normal[ 1 ] == 0.0f )
+       if( normal[ 0 ] == 0.0f && normal[ 1 ] == 0.0f && ( normal[ 2 ] == 1.0f || normal[ 2 ] == -1.0f ) )
        {
                if( normal[ 2 ] == 1.0f )               
                {