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From fdbfb7694f9d7048d53674b79ddfc38068bfdaf7 Mon Sep 17 00:00:00 2001
From: Marti Maria <marti.maria@littlecms.com>
Date: Sun, 30 Jan 2022 16:56:48 +0100
Subject: [PATCH] Fix for optimisation error on grayscale
Thanks to Aaron Boxer for reporting this issue
---
src/cmsintrp.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/src/cmsintrp.c b/src/cmsintrp.c
index 5cd6d16c..5eb98e6c 100644
--- a/src/cmsintrp.c
+++ b/src/cmsintrp.c
@@ -278,10 +278,10 @@ void Eval1Input(CMSREGISTER const cmsUInt16Number Input[],
// if last value...
if (Input[0] == 0xffff || p16->Domain[0] == 0) {
- cmsUInt16Number y0 = LutTable[p16->Domain[0]];
-
+ cmsUInt32Number y0 = p16->Domain[0] * p16->opta[0];
+
for (OutChan = 0; OutChan < p16->nOutputs; OutChan++) {
- Output[OutChan] = y0;
+ Output[OutChan] = LutTable[y0 + OutChan];
}
}
else
@@ -324,10 +324,10 @@ void Eval1InputFloat(const cmsFloat32Number Value[],
// if last value...
if (val2 == 1.0 || p->Domain[0] == 0) {
- y0 = LutTable[p->Domain[0]];
+ cmsUInt32Number start = p->Domain[0] * p->opta[0];
for (OutChan = 0; OutChan < p->nOutputs; OutChan++) {
- Output[OutChan] = y0;
+ Output[OutChan] = LutTable[start + OutChan];
}
}
else
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