[Openexr-devel] A few fixes before the 1.1.0 release

[Drew Hess]

Hi all,

I just checked in some changes that needed to be made before a 1.1.0 
release.  Among them are:

* fixed the bug in IlmImf that was preventing partially-written 
  DECREASING_Y files from being read, thanks for finding that, Ken.

* Changed the orientation of lat-long environment maps to match the
  way that images are typically recorded with panoramic cameras.
  Lat +90 degrees (pi/2) now corresponds to the top row of pixels
  and the +y direction (up).  Longitude 180 degrees (pi)
  corresponds to the left-most column of pixels and to the +x
  direction.  This change was made so that panoramic images don't
  need to be resampled in order to use them as environment maps
  with OpenEXR.

* Added a choice of rounding modes for level resolutions in
  multiresolution OpenEXR images.  When a level's width or height
  is odd, you can now choose to round the next level's size up or down.
  The default is down, which matches the previous method, so 
  any files you've written prior to this change are still valid
  OpenEXR images.


I still need to update exrmaketiled and exrheader to reflect the rounding
mode changes, update the 1.1 images to give you all some test cases for
ROUND_UP multires files, test the fragment shader version of exrdisplay,
plus fix a few nagging build-related bugs that people have found, and
integrate the Win32 changes, but we're on track for a 1.1.0 release next
week. 

We're also adding two new utilities, one for automatically adding preview
images to OpenEXR images, and one for manipulating environment maps.  Not
in CVS yet, but these'll go into the 1.1.0 release for sure.



-dwh-