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, 4 insertions, 1 deletions

diff --git a/source/blender/src/interface_icons.c b/source/blender/src/interface_icons.c
index d245e0e1427..dc487ae72fe 100644
--- a/source/blender/src/interface_icons.c
+++ b/source/blender/src/interface_icons.c
@@ -733,8 +733,11 @@ void BIF_icon_draw(float x, float y, int icon_id)
 		
 		ui_rasterpos_safe(x, y, di->aspect);
 		
+		if(di->w<1 || di->h<1) {
+			printf("what the heck!\n");
+		}
 		/* di->rect contains image in 'rendersize', we only scale if needed */
-		if(di->rw!=di->w && di->rh!=di->h) {
+		else if(di->rw!=di->w && di->rh!=di->h) {
 			ImBuf *ima;
 			/* first allocate imbuf for scaling and copy preview into it */
 			ima = IMB_allocImBuf(di->rw, di->rh, 32, IB_rect, 0);