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/targa.c b/source/blender/imbuf/intern/targa.c
index 5c064098671..331c1031599 100644
--- a/source/blender/imbuf/intern/targa.c
+++ b/source/blender/imbuf/intern/targa.c
@@ -518,8 +518,8 @@ struct ImBuf *imb_loadtarga(unsigned char *mem, int flags)
 	
 	if (checktarga(&tga,mem) == 0) return(0);
 
-	if (flags & IB_test) ibuf = IMB_allocImBuf(tga.xsize,tga.ysize,tga.pixsize,0,0);
-	else ibuf = IMB_allocImBuf(tga.xsize,tga.ysize,(tga.pixsize + 0x7) & ~0x7,1,0);
+	if (flags & IB_test) ibuf = IMB_allocImBuf(tga.xsize,tga.ysize,tga.pixsize, 0, 0);
+	else ibuf = IMB_allocImBuf(tga.xsize,tga.ysize,(tga.pixsize + 0x7) & ~0x7, IB_rect, 0);
 
 	if (ibuf == 0) return(0);
 	ibuf->ftype = TGA;
@@ -629,7 +629,7 @@ struct ImBuf *imb_loadtarga(unsigned char *mem, int flags)
 
 	if (ibuf) {
 		if (ibuf->rect && (flags & IB_cmap)==0) 
-			IMB_convert_rgba_to_abgr((ibuf->x+ibuf->skipx)*ibuf->y, ibuf->rect);
+			IMB_convert_rgba_to_abgr(ibuf);
 	}
 	
 	return(ibuf);