/*
 * Copyright © 2006 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.
 *
 * Authors:
 *    Wang Zhenyu <zhenyu.z.wang@intel.com>
 *    Keith Packard <keithp@keithp.com>
 */
 
/*
 * Input parameters
 */

/* Destination X/Y */
define(`dst_x_uw',  `g1.8<2,4,0>UW')
define(`dst_y_uw',  `g1.10<2,4,0>UW')
define(`screen_x0', `g1.0<0,1,0>F')
define(`screen_y0', `g1.4<0,1,0>F')

/* Source transformation parameters */
define(`src_du_dx', `g3.0<0,1,0>F')
define(`src_du_dy', `g3.4<0,1,0>F')
define(`src_uo',    `g3.12<0,1,0>F')
define(`src_dv_dx', `g3.16<0,1,0>F')
define(`src_dv_dy', `g3.20<0,1,0>F')
define(`src_vo',    `g3.28<0,1,0>F')
define(`src_dw_dx', `g4.0<0,1,0>F')
define(`src_dw_dy', `g4.4<0,1,0>F')
define(`src_wo',    `g4.12<0,1,0>F')

define(`mask_du_dx', `g5.0<0,1,0>F')
define(`mask_du_dy', `g5.4<0,1,0>F')
define(`mask_uo',    `g5.12<0,1,0>F')
define(`mask_dv_dx', `g5.16<0,1,0>F')
define(`mask_dv_dy', `g5.20<0,1,0>F')
define(`mask_vo',    `g5.28<0,1,0>F')
define(`mask_dw_dx', `g6.0<0,1,0>F')
define(`mask_dw_dy', `g6.4<0,1,0>F')
define(`mask_wo',    `g6.12<0,1,0>F')

/*
 * Local variables. Pairs must be aligned on even reg boundry
 */

/* this holds the X dest coordinates */
define(`dst_x',	    `g8')
define(`dst_x_0',   `dst_x')
define(`dst_x_1',   `g9')

/* this holds the Y dest coordinates */
define(`dst_y',	    `g10')
define(`dst_y_0',   `dst_y')
define(`dst_y_1',   `g11')

/* When computing x * dn/dx, use this */
define(`temp_x',    `g30')
define(`temp_x_0',  `temp_x')
define(`temp_x_1',  `g31')

/* When computing y * dn/dy, use this */
define(`temp_y',    `g28')
define(`temp_y_0',  temp_y)
define(`temp_y_1',  `g29')

/* when loading x/y, use these to hold them in UW format */
define(`temp_x_uw', temp_x)
define(`temp_y_uw', temp_y)

/* compute source and mask u/v to this pair to send to sampler */
define(`src_msg',   `m1')
define(`src_msg_ind',`1')
define(`src_u',	    `m2')
define(`src_v',	    `m4')
define(`src_w',	    `g12')
define(`src_w_0',   `src_w')
define(`src_w_1',   `g13')

define(`mask_msg',  `m7')
define(`mask_msg_ind',`7')
define(`mask_u',    `m8')
define(`mask_v',    `m10')
define(`mask_w',    `src_w')
define(`mask_w_0',  `src_w_0')
define(`mask_w_1',  `src_w_1')

/* sample src to these registers */
define(`src_sample0',	`g14')
define(`src_sample1',	`g15')
define(`src_sample2',	`g16')
define(`src_sample3',	`g17')
define(`src_sample4',	`g18')
define(`src_sample5',	`g19')
define(`src_sample6',	`g20')
define(`src_sample7',	`g21')

/* sample mask to these registers */
define(`mask_sample0',	`g22')
define(`mask_sample1',	`g23')
define(`mask_sample2',	`g24')
define(`mask_sample3',	`g25')
define(`mask_sample4',	`g26')
define(`mask_sample5',	`g27')
define(`mask_sample6',	`g28')
define(`mask_sample7',	`g29')