Orange branch: OpenEXR finally in Blender!

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... :/

1 files changed, 3 insertions, 3 deletions

diff --git a/source/blender/imbuf/intern/iris.c b/source/blender/imbuf/intern/iris.c
index 20aa9d75fd2..5c0a3f94a0e 100644
--- a/source/blender/imbuf/intern/iris.c
+++ b/source/blender/imbuf/intern/iris.c
@@ -398,7 +398,7 @@ struct ImBuf *imb_loadiris(unsigned char *mem, int flags)
 	
 	if (ibuf) {
 		if (ibuf->rect) 
-			IMB_convert_rgba_to_abgr(ibuf->x*ibuf->y, ibuf->rect);
+			IMB_convert_rgba_to_abgr(ibuf);
 	}
 
 	return(ibuf);
@@ -639,13 +639,13 @@ short imb_saveiris(struct ImBuf * ibuf, char *name, int flags)
 	zsize = (ibuf->depth + 7) >> 3;
 	if (flags & IB_zbuf &&  ibuf->zbuf != 0) zsize = 8;
 	
-	IMB_convert_rgba_to_abgr(ibuf->x*ibuf->y, ibuf->rect);
+	IMB_convert_rgba_to_abgr(ibuf);
 	test_endian_zbuf(ibuf);
 
 	ret = output_iris(ibuf->rect, ibuf->x, ibuf->y, zsize, name, ibuf->zbuf);
 
 	/* restore! Quite clumsy, 2 times a switch... maybe better a malloc ? */
-	IMB_convert_rgba_to_abgr(ibuf->x*ibuf->y, ibuf->rect);
+	IMB_convert_rgba_to_abgr(ibuf);
 	test_endian_zbuf(ibuf);
 
 	return(ret);