Ton Roosendaal
ecdfa5374a
passes in single file. Code is currently disabled, commit is mainly to have a nicer method of excluding OpenEXR dependency from render module. This should compile with disabled WITH_OPENEXR too. Reason why EXR is great to include by default in Blender is its feature to store unlimited layers and channels, and write this tile based. I need the feature for saving memory; while rendering tiles, all full-size buffers for all layers and passes are kept in memory now, which can go into 100s of MB easily. The code I commit now doesn't allocate these buffers while rendering, but saves the tiles to disk. In the end is it read back. Overhead for large renders (like 300 meg buffers) is 10-15 seconds, not bad. Two more interesting aspects: - Blender can save such multi-layer files in the temp directory, storing it with .blend file name and scene name. That way, on each restart of Blender, or on switching scenes, these buffers can be read. So you always see what was rendered last. Also great for compositing work. - This can also become an output image type for rendering. There's plenty of cases where you want specific layers or passes saved to disk for later use. Anyhoo, finishing it is another days of work, and I got more urgent stuff now!
60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
/**
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* $Id$
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*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The Original Code is Copyright (C) 2005 Blender Foundation
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): Austin Benesh. Ton Roosendaal.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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#ifndef _OPENEXR_API_H
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#define _OPENEXR_API_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define OPENEXR_FLOATRGB 0x1
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#define OPENEXR_ZBUF 0x2
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#include <stdio.h>
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/**
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* Test presence of OpenEXR file.
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* @param mem pointer to loaded OpenEXR bitstream
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*/
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int imb_is_a_openexr (unsigned char *mem);
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short imb_save_openexr (struct ImBuf *ibuf, char *name, int flags);
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struct ImBuf *imb_load_openexr (unsigned char *mem, int size, int flags);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __OPENEXR_API_H */
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