Improve calculation of brighter colors

The old code did not brighten up "pure" colors like "red", "green" and "blue"
at all. The new code use a different precomputed LUT which is based upon
simplified vector math, see the comments in FbTk/ColorLUT.cc

1 files changed, 1 insertions, 1 deletions

diff --git a/src/FbTk/Texture.cc b/src/FbTk/Texture.cc
index da45bc4..888b3c7 100644
--- a/src/FbTk/Texture.cc
+++ b/src/FbTk/Texture.cc
@@ -37,7 +37,7 @@
 namespace {
 
 unsigned short inline brighten(unsigned short c) {
-    return 0x101 * FbTk::ColorLUT::PRE_MULTIPLY_1_5[c];
+    return 0x101 * FbTk::ColorLUT::BRIGHTER_8[c];
 }
 
 unsigned short inline darken(unsigned short c) {