Our previous version was 1.6.1. Thanks, Ben
On 15 May 2013, at 16:51, Ben Woodhall wrote: > Darn. I must be comparing with 1.6.x. I shall check which version. > > We'll probably want to maintain compatibility with the old software though, > so I guess my question remains the same but for maintaining compatibility > between 1.6.x and 2.0. > > Sorry for the confusion. > > Thanks, Ben > > > On 15 May 2013, at 16:43, Piotr Stanczyk wrote: > >> Hi Ben, >> >> I think that behaviour was present in the 1.7.x release. Which version were >> you building against previously? >> >> Piotr >> >> ________________________________________ >> From: Ben Woodhall [woodh...@thefoundry.co.uk] >> Sent: 15 May 2013 08:36 >> To: openexr-devel@nongnu.org >> Subject: OpenEXR 2.0 backwards compatibility >> >> Hello, >> >> We found an issue when upgrading our EXR libraries to 2.0. The new >> libraries automatically use "long names" for the channels if channels are >> added with names longer than 31 characters. They set a bit of the version >> integer in the file header to switch to 255 character channel names. In >> earlier EXR libraries these channel names were automatically truncated to 31 >> characters. This is perfectly sensible but it means that saving single part >> images with channel names of more than 31 characters produces EXR 2.0 only >> images (as previous versions don't support "long names"). >> >> We can fix the compatibility by truncating channel names when writing single >> part files, however we're concerned that there may be other compatibility >> issue that we should be aware of. Could you let me know if there are any >> other compatibility issues? Is truncating names the right thing to do for >> backwards compatibility is there a better way to deal with this? >> >> Any help appreciated. >> >> Many thanks, Ben >> >> >> > > -- > Ben Woodhall > Software Engineer > The Foundry, 6th Floor, The Communications Building, > 48 Leicester Square, London, UK, WC2H 7LT > Tel: +44(0)20 7968 6828 - Fax: +44(0)20 7930 8906 > Web: www.thefoundry.co.uk > Email: ben.woodh...@thefoundry.co.uk > > The Foundry Visionmongers Ltd. > Registered in England and Wales No: 4642027 > > > -- Ben Woodhall Software Engineer The Foundry, 6th Floor, The Communications Building, 48 Leicester Square, London, UK, WC2H 7LT Tel: +44(0)20 7968 6828 - Fax: +44(0)20 7930 8906 Web: www.thefoundry.co.uk Email: ben.woodh...@thefoundry.co.uk The Foundry Visionmongers Ltd. Registered in England and Wales No: 4642027
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