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/*
* Copyright © 2008 Intel Corporation
*
* 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, sublicense,
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*
* Author:
* Zou Nan hai <nanhai.zou@intel.com>
* Zhang Hua jun <huajun.zhang@intel.com>
* Xing Dong sheng <dongsheng.xing@intel.com>
*
*/
/* shader for backward predict mc
*/
/* save payload */
mov (8) g76.0<1>UD g1.0<8,8,1>UD {align1};
//mov (8) g77.0<1>UD g2.0<8,8,1>UD {align1};
include(`block_clear.g4i')
mov (8) g115.0<1>UD g1.0<8,8,1>UD {align1};
mov (1) g1.8<1>UD 0x0070007UD {align1};
define(`input_surface', `4')
define(`mv1', `g115.14')
define(`mv2', `g115.16')
/* Y */
/* (x', y') = (x, y) + (motion_vector.x >> 1, motion_vector.y >> 1) */
asr (2) g1.14<1>W g115.14<2,2,1>W 1W {align1};
add (2) g2.0<1>UD g115.0<2,2,1>UD g1.14<2,2,1>W {align1};
include(`motion_frame_y.g4i')
/* motion_vector = motion_vector >> 1 */
/* (x', y') = (x, y) + (motion_vector.x >> 1, motion_vector.y >> 1) */
/* U */
shr (2) g1.0<1>UD g115.0<2,2,1>UD 1UD {align1};
asr (2) g115.14<1>W g115.14<2,2,1>W 1W {align1};
asr (2) g1.14<1>W g115.14<2,2,1>W 1W {align1};
add (2) g2.0<1>UD g1.0<2,2,1>UD g1.14<2,2,1>W {align1};
define(`input_surface1', `5')
define(`input_surface2', `6')
mov (1) g2.8<1>UD 0x007000fUD {align1};
include(`motion_frame_uv.g4i')
/* V */
/* (x', y') = (x, y) + (motion_vector.x >> 1, motion_vector.y >> 1) */
include(`addidct.g4i')
send (16) 0 acc0<1>UW g0<8,8,1>UW
thread_spawner(0, 0, 0) mlen 1 rlen 0 { align1 EOT};
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