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/**************************************************************************
*
* Copyright 2009 Marek Olšák <maraeo@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#ifndef U_TEXTURE_H
#define U_TEXTURE_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* Convert 2D texture coordinates of 4 vertices into cubemap coordinates
* in the given face.
* Coordinates must be in the range [0,1].
*
* \param face Cubemap face.
* \param in_st 4 pairs of 2D texture coordinates to convert.
* \param in_stride Stride of in_st in floats.
* \param out_str STR cubemap texture coordinates to compute.
* \param out_stride Stride of out_str in floats.
*/
void util_map_texcoords2d_onto_cubemap(unsigned face,
const float *in_st, unsigned in_stride,
float *out_str, unsigned out_stride);
#ifdef __cplusplus
}
#endif
#endif
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