1/*
2 * Copyright © 2008 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 FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 * Author:
24 *    Zou Nan hai <nanhai.zou@intel.com>
25 *    Zhang Hua jun <huajun.zhang@intel.com>
26 *    Xing Dong sheng <dongsheng.xing@intel.com>
27 *
28 */
29
30/* shader for backward predict mc
31*/
32mov (8) g76.0<1>UD g1.0<8,8,1>UD {align1};
33//mov (8) g77.0<1>UD g2.0<8,8,1>UD {align1};
34
35include(`block_clear.g4i')
36
37mov (2) g1.14<1>UW g1.18<2,2,1>UW {align1};
38/* save payload */
39mov (8) g115.0<1>UD g1.0<8,8,1>UD {align1}; 
40/* 8x8 media read/write payload */
41mov (1) g1.8<1>UD 0x0070007UD {align1};  
42/* save payload, again */
43define(`dest', `g118')
44define(`input_surface',	`7')
45define(`mv1',	`g115.14')
46define(`mv2',	`g115.16')
47/* Y */
48/* (x', y') = (x, y) + (motion_vector.x >> 1, motion_vector.y >> 1) */
49asr (2) g1.14<1>W g115.14<2,2,1>W 1W {align1};
50add (2) g2.0<1>UD g115.0<2,2,1>UD g1.14<2,2,1>W {align1};
51include(`motion_frame_y.g4i')
52/* motion_vector = motion_vector >> 1 */
53/* (x', y') = (x, y) + (motion_vector.x >> 1, motion_vector.y >> 1) */
54shr (2) g1.0<1>UD g115.0<2,2,1>UD 1UD {align1};
55asr (2) g115.14<1>W g115.14<2,2,1>W 1W {align1};
56asr (2) g1.14<1>W g115.14<2,2,1>W 1W {align1};
57add (2) g2.0<1>UD g1.0<2,2,1>UD g1.14<2,2,1>W {align1};
58/* U */
59define(`input_surface1',	`8')
60define(`input_surface2',	`9')
61mov (1) g2.8<1>UD 0x007000fUD  {align1};
62include(`motion_frame_uv.g4i')
63
64/* V */
65/* (x', y') = (x, y) + (motion_vector.x >> 1, motion_vector.y >> 1) */
66include(`addidct.g4i')
67
68send (16) 0 acc0<1>UW g0<8,8,1>UW 
69	thread_spawner(0, 0, 0) mlen 1 rlen 0 { align1 EOT};
70