Credits go to Gernot Ziegler, who originally coded EXR support, and to
Austin Benesh for bringing it further. Kent Mein provided a lot of code
for integrating float buffers in Blender imbuf and ImBuf API cleanup,
and provided Make and Scons and static linking.
At this moment; the EXR libraries are a *dependency*, so you cannot get
the Orange branch compiled without having OpenEXR installed. Get the
(precompiled or sources) stuff from www.openexr.com. Current default is
that the headers and lib resides in /user/local/
Several changes/additions/fixes were added:
- EXR code only supported 'half' format (16 bits per channel). I've added
float writing, but for reading it I need tomorrow. :)
- Quite some clumsy copying of data happened in EXR code.
- cleaned up the api calls already a bit, preparing for more advanced
support
- Zbuffers were saved 16 bits, now 32 bits
- automatic adding of .exr extensions went wrong
Imbuf:
- added proper imbuf->flags and imbuf->mall support for float buffers, it
was created for *each* imbuf. :)
- found bugs for float buffers in scaling and flipping. Code there will
need more checks still
- imbuf also needs to be verified to behave properly when no 32 bits
rect exists (for saving for example)
TODO:
- support internal float images for textures, backbuf, AO probes, and
display in Image window
Hope this commit won't screwup syncing with bf-blender... :/
Summary: standardized imageformat functions(make function names similar, and
parameters in same order where relavant), small code cleanups, and
added a description of how to add an image format to blender.
Kent
Specifics:
merged png_decode.c and png_encode.c to png.c and cleaned function calls.
fixed some spacing in IMB_imbuf_types.h
casting cleanups:
intern/amiga.c
intern/ham.c
intern/iris.c
Modified switch statements to have a default type to insure values are set:
intern/antialias.c
Initalization of some vars and make types similar.
intern/bitplanes.c
cleaned function calls, and changed if else to if's with return:
intern/jpeg.c
added {}'s in multidemensional arrays.
intern/matrix.h
Made a little cleaner to read, and matched above changes.
intern/readimage.c
intern/writeimage.c
