Kent Mein
b9a19f1ea7
(adding) #ifdef HAVE_CONFIG_H #include <config.h> #endif also the Makefile.in's were from previous patch adding the system depend stuff to configure.ac Kent -- mein@cs.umn.edu
84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
/*
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* gammacorrectiontables.h
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*
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* $Id$
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*
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* ***** BEGIN GPL/BL DUAL 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. The Blender
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* Foundation also sells licenses for use in proprietary software under
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* the Blender License. See http://www.blender.org/BL/ for information
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* about this.
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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) 2001-2002 by NaN Holding BV.
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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): none yet.
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*
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* ***** END GPL/BL DUAL LICENSE BLOCK *****
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*/
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#ifndef GAMMACORRECTIONTABLES_H
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#define GAMMACORRECTIONTABLES_H
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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/* Default gamma. For most CRTs, gamma ranges from 2.2 to 2.5 (Foley), so */
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/* 2.35 seems appropriate enough. Experience teaches a different number */
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/* though. Old blender: 2.0. It might be nice to make this a slider */
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#define RE_DEFAULT_GAMMA 2.0
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/* This 400 is sort of based on the number of intensity levels needed for */
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/* the typical dynamic range of a medium, in this case CRTs. (Foley) */
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/* (Actually, it says the number should be between 400 and 535.) */
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#define RE_GAMMA_TABLE_SIZE 400
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/**
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* Initialise the gamma lookup tables
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*/
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void makeGammaTables(float gamma);
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/**
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* Returns true if the table is initialised, false otherwise
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*/
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int gammaTableIsInitialised(void);
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/**
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* Apply gamma correction on col
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*/
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float gammaCorrect(float col);
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/**
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* Apply inverse gamma correction on col
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*/
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float invGammaCorrect(float col);
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/**
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* Tell whether or not to do gamma.
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*/
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int doGamma(void);
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/**
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* Set/unset performing gamma corrections.
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*/
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void setDoGamma(int);
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#endif
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