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 * Register assignments:
30 *
31 *  x		    g6/g7
32 *  y		    g8/g9
33 *
34 *  temp x	    g10/g11
35 *  temp y	    g12/g13
36 *
37 *  src w	    g14/g15
38 *  src u	    m1/m2
39 *  src v	    m3/m4
40 */
41 
42/* Fragment to compute per-pixel XY values */
43
44include(`exa_wm.g4i')
45    
46    /* Load X and Y coordinates and compute per-pixel coordinates */
47add (16)	temp_x_uw<1>UW	dst_x_uw		0x10101010V	{ align1 };
48add (16)	temp_y_uw<1>UW	dst_y_uw		0x11001100V	{ align1 };
49
50    /* subtract screen-space origin of vertex 0 */
51add (16)	dst_x<1>F	temp_x_uw<8,8,1>UW	-screen_x0	{ compr align1 };
52add (16)	dst_y<1>F	temp_y_uw<8,8,1>UW	-screen_y0	{ compr align1 };
53