1 /**************************************************************************
3 * Copyright 2013-2014 RAD Game Tools and Valve Software
4 * Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 **************************************************************************/
30 #include "vogl_core.h"
35 class dxt5_endpoint_optimizer
38 dxt5_endpoint_optimizer();
47 m_quality(cCRNDXTQualityUber),
48 m_use_both_block_types(true)
54 const color_quad_u8 *m_pPixels;
58 vogl_dxt_quality m_quality;
60 bool m_use_both_block_types;
69 uint8 m_first_endpoint;
70 uint8 m_second_endpoint;
72 uint8 m_block_type; // 1 if 6-alpha, otherwise 8-alpha
75 bool compute(const params &p, results &r);
78 const params *m_pParams;
81 vogl::vector<uint8> m_unique_values;
82 vogl::vector<uint> m_unique_value_weights;
84 vogl::vector<uint8> m_trial_selectors;
85 vogl::vector<uint8> m_best_selectors;
86 int m_unique_value_map[256];
88 sparse_bit_array m_flags;
90 void evaluate_solution(uint low_endpoint, uint high_endpoint);