At one time there was a requirement that only the display windows were the > same, not necessarily the resolution of the data. So prior to calling the > 'exrmultipart' command, we used 'oiiotool --fullsize' to set all display > windows to that of the highest resolution in the file set. >
The downside to that is that samplers are generally expecting the display window to span the extent of (u,v), so when the displayWindow subtends a different region, badness happens. > But then that requirement was lifted, at least as of version 2.1.0 we no > longer have to set the display windows equal. > As of 2.2, it's still a requirement that the displayWindows match across parts. What happened was that we commented out that restriction in a local build... So to answer Larry's question, Yes. That is a problematic restriction. However, the constraint seems to have been put in place as a conservative measure, and perhaps it's time to reexamine the constraint. I agree that it makes total sense for displayWindows to match for rasters. But for textures... Karl
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