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 31 extern "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 */ 45 void 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