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41 lines
1.7 KiB
C++
41 lines
1.7 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "bladerunner/color.h"
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namespace BladeRunner {
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// This array essentially stores the conversion from unsigned 5bit values to 8bit
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// ie. ((int)i * 255) / 31 (integer division), for i values 0 to 31
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// Note that just using a multiplier 256/16 (= 8) will not properly
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// map the color, since eg. value 31 would be mapped to 248 instead of 255.
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const uint8 Color::map5BitsTo8Bits[] = {0, 8, 16, 24, 32, 41, 49, 57, 65, 74, 82, 90, 98, 106, 115, 123, 131, 139, 148, 156, 164, 172, 180, 189, 197, 205, 213, 222, 230, 238, 246, 255};
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uint8 Color::get8BitColorFrom5Bit(uint8 col5b) {
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if (col5b > 31) {
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// A value larger than 31 is invalid (never going to happen for 5bits)
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// but still catch the case, since the parameter is 8bits
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return 255;
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}
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return map5BitsTo8Bits[col5b];
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}
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} // End of namespace BladeRunner
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