Welcome to mirror list, hosted at ThFree Co, Russian Federation.

git.blender.org/blender.git - Unnamed repository; edit this file 'description' to name the repository.
summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat (limited to 'source/blender/render/intern/include/gammaCorrectionTables.h')
-rw-r--r--source/blender/render/intern/include/gammaCorrectionTables.h79
1 files changed, 79 insertions, 0 deletions
diff --git a/source/blender/render/intern/include/gammaCorrectionTables.h b/source/blender/render/intern/include/gammaCorrectionTables.h
new file mode 100644
index 00000000000..14c2d2d4a68
--- /dev/null
+++ b/source/blender/render/intern/include/gammaCorrectionTables.h
@@ -0,0 +1,79 @@
+/*
+ * gammacorrectiontables.h
+ *
+ * $Id$
+ *
+ * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version. The Blender
+ * Foundation also sells licenses for use in proprietary software under
+ * the Blender License. See http://www.blender.org/BL/ for information
+ * about this.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL/BL DUAL LICENSE BLOCK *****
+ */
+
+#ifndef GAMMACORRECTIONTABLES_H
+#define GAMMACORRECTIONTABLES_H
+
+
+
+/* Default gamma. For most CRTs, gamma ranges from 2.2 to 2.5 (Foley), so */
+/* 2.35 seems appropriate enough. Experience teaches a different number */
+/* though. Old blender: 2.0. It might be nice to make this a slider */
+#define RE_DEFAULT_GAMMA 2.0
+/* This 400 is sort of based on the number of intensity levels needed for */
+/* the typical dynamic range of a medium, in this case CRTs. (Foley) */
+/* (Actually, it says the number should be between 400 and 535.) */
+#define RE_GAMMA_TABLE_SIZE 400
+
+/**
+ * Initialise the gamma lookup tables
+ */
+void makeGammaTables(float gamma);
+
+/**
+ * Returns true if the table is initialised, false otherwise
+ */
+int gammaTableIsInitialised(void);
+
+/**
+ * Apply gamma correction on col
+ */
+float gammaCorrect(float col);
+
+/**
+ * Apply inverse gamma correction on col
+ */
+float invGammaCorrect(float col);
+
+/**
+ * Tell whether or not to do gamma.
+ */
+int doGamma(void);
+
+/**
+ * Set/unset performing gamma corrections.
+ */
+void setDoGamma(int);
+
+#endif