diff options
Diffstat (limited to 'media-libs/lcms/files/lcms-2.13-grayscale-regression.patch')
-rw-r--r-- | media-libs/lcms/files/lcms-2.13-grayscale-regression.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/media-libs/lcms/files/lcms-2.13-grayscale-regression.patch b/media-libs/lcms/files/lcms-2.13-grayscale-regression.patch new file mode 100644 index 000000000000..d1ce0483ee6f --- /dev/null +++ b/media-libs/lcms/files/lcms-2.13-grayscale-regression.patch @@ -0,0 +1,38 @@ +https://github.com/mm2/Little-CMS/commit/fdbfb7694f9d7048d53674b79ddfc38068bfdaf7 +https://bugs.gentoo.org/832520 + +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 +--- 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 + |