[gegl] algs: halve 8bpc LUT size

[Øyvind Kolås <ok src gnome org>]

commit be65432a3e680e1f503565e489a0984ad0ac982f
Author: Øyvind Kolås <pippin gimp org>
Date:   Tue Apr 3 22:10:15 2018 +0200

    algs: halve 8bpc LUT size

 gegl/gegl-algorithms.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gegl/gegl-algorithms.c b/gegl/gegl-algorithms.c
index a698335..f17401f 100644
--- a/gegl/gegl-algorithms.c
+++ b/gegl/gegl-algorithms.c
@@ -108,7 +108,7 @@ gegl_downscale_2x2_generic (const Babl *format,
    }
 }
 
-#define LUT_DIVISOR 16
+#define LUT_DIVISOR 32
 
 static uint16_t lut_u8_to_u16[256];
 static uint16_t lut_u8_to_u14[256];