--- Operating System, Graphics card ---
cpu: amd athlon 64 3800
ram: 1024 mb
gfx: ati radeon xpress 1150, 512 mb
os: windows xp pro, service pack 3
--- Blender version with error, and version that worked ---
error in 2.64, 265 and 2.66, worked in 2.63 and earlier.
--- Short description of error ---
compositor color ramp gamma no longer using same range as 2,63
--- Steps for others to reproduce the error (preferably based on attached .blend file) ---
see attached .blend file. compare viewer node output in 2.63 and later builds.
also compare attached .png files.
Description
Description
Event Timeline
Comment Actions
In 2.64 a complete new compositing system was added, using a new color management system.
You saved this file 2.65, and if you then use it in 2.63 it thinks there's no (old style) color management set.
In general we keep backwards compatibility work fine, but using older binaries with new files can always give issues like this.
Comment Actions
thanks but that's not the issue here, i'm aware of the cm changes in 2.64 onwards, the problem is files created in 2.63 using the compositor color ramp, don't work properly with the newer versions of blender, not the other way round. i want to use the latest binaries but i don't want to have to rebuild all my previous node setups.
Comment Actions
I saved the file with 2.63 and it loads ok (without CM) in 2.65.
Unfortunately the new compositor, and all the work on color, and bug fixes in how alpha was used, might make things work a bit differently in cases.
We do our very best to keep things work, but improvements and fixes don't always allow that.
Comment Actions
thanks again for replying.
i too can load the 2.63 file into the 2.65 binary, that's not the issue i have.
the new color ramp uses a different gamma range compared to older versions of blender. regardless of which cm options are chosen in 2.65.
the only way i could reproduce the same results, if i'm lucky, is to redo the color ramp values and all the nodes that those affected, that's a lot of work for the large project i've been working on for over a year. and then what happens next time you guys decide to change the way the nodes work? i just have rebuild things again and hope that they produce the same results?