Update a boring comment.

diff --git a/rans.shader b/rans.shader
index 05ac1206d1961ac3732882fa152935f4bc884fde..925543ef7dfa284d0fddbce411a61444438dbc9f 100644 (file)
--- a/rans.shader
+++ b/rans.shader
@@ -97,7 +97,9 @@ void encode_coeff(int signed_k, uint sign_bias, inout RansEncoder enc)
        uint k = abs(signed_k);
 
        if (k >= ESCAPE_LIMIT) {
        uint k = abs(signed_k);
 
        if (k >= ESCAPE_LIMIT) {

-               // ... boring stuff here
+               // Put the coefficient as a 1/(2^12) symbol _before_
+               // the 255 coefficient, since the decoder will read the
+               // 255 coefficient first.

                RansEncPut(enc.rans, enc.rans_offset, k, 1, prob_bits);
                k = ESCAPE_LIMIT;
        }
                RansEncPut(enc.rans, enc.rans_offset, k, 1, prob_bits);
                k = ESCAPE_LIMIT;
        }