fix another bug in alpha refinement

diff --git a/s2tc_compressor.cpp b/s2tc_compressor.cpp
index dedca69..f3bc9a1 100644 (file)
--- a/s2tc_compressor.cpp
+++ b/s2tc_compressor.cpp
@@ -723,8 +723,8 @@ namespace
                                                {
                                                        int bitindex_set = pindex * 3;
                                                        int bitindex_test = bitindex_set + 2;
-                                                       if(!(out[bitindex_test / 8] & (1 << (bitindex_test % 8))))
-                                                               out[bitindex_set / 8] ^= (1 << (bitindex_set % 8));
+                                                       if(!(out[bitindex_test / 8 + 2] & (1 << (bitindex_test % 8))))
+                                                               out[bitindex_set / 8 + 2] ^= (1 << (bitindex_set % 8));
                                                }
                                        }
                                }