1/**************************************************************************
2 *
3 * Copyright 2009 Marek Olšák <maraeo@gmail.com>
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
20 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 **************************************************************************/
26
27#ifndef U_TEXTURE_H
28#define U_TEXTURE_H
29
30#ifdef __cplusplus
31extern "C" {
32#endif
33
34/**
35 * Convert 2D texture coordinates of 4 vertices into cubemap coordinates
36 * in the given face.
37 * Coordinates must be in the range [0,1].
38 *
39 * \param face          Cubemap face.
40 * \param in_st         4 pairs of 2D texture coordinates to convert.
41 * \param in_stride     Stride of in_st in floats.
42 * \param out_str       STR cubemap texture coordinates to compute.
43 * \param out_stride    Stride of out_str in floats.
44 */
45void util_map_texcoords2d_onto_cubemap(unsigned face,
46                                       const float *in_st, unsigned in_stride,
47                                       float *out_str, unsigned out_stride);
48
49
50#ifdef __cplusplus
51}
52#endif
53
54#endif
55