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  1. /*
  2.  * Copyright © 2006 Intel Corporation
  3.  *
  4.  * Permission is hereby granted, free of charge, to any person obtaining a
  5.  * copy of this software and associated documentation files (the "Software"),
  6.  * to deal in the Software without restriction, including without limitation
  7.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  8.  * and/or sell copies of the Software, and to permit persons to whom the
  9.  * Software is furnished to do so, subject to the following conditions:
  10.  *
  11.  * The above copyright notice and this permission notice (including the next
  12.  * paragraph) shall be included in all copies or substantial portions of the
  13.  * Software.
  14.  *
  15.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20.  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21.  * IN THE SOFTWARE.
  22.  *
  23.  * Authors:
  24.  *    Wang Zhenyu <zhenyu.z.wang@intel.com>
  25.  *    Keith Packard <keithp@keithp.com>
  26.  */
  27.  
  28. /*
  29.  * Fragment to compute src u/v values under an affine transform
  30.  */
  31.  
  32. /********** Compute u *************/
  33.  
  34. mul (16)        temp_x<1>F      dst_x<8,8,1>F   du_dx           { compr align1 };
  35. mul (16)        temp_y<1>F      dst_y<8,8,1>F   du_dy           { compr align1 };
  36. add (16)        temp_x<1>F      temp_x<8,8,1>F  temp_y<8,8,1>F  { compr align1 };
  37. add (16)        u<1>F           temp_x<8,8,1>F  uo              { compr align1 };
  38.  
  39. /********** Compute v *************/
  40.  
  41. mul (16)        temp_x<1>F      dst_x<8,8,1>F   dv_dx           { compr align1 };
  42. mul (16)        temp_y<1>F      dst_y<8,8,1>F   dv_dy           { compr align1 };
  43. add (16)        temp_x<1>F      temp_x<8,8,1>F  temp_y<8,8,1>F  { compr align1 };
  44. add (16)        v<1>F           temp_x<8,8,1>F  vo              { compr align1 };
  45.