/*
* 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>
*/
/*
* Register assignments:
*
* x g6/g7
* y g8/g9
*
* temp x g10/g11
* temp y g12/g13
*
* src w g14/g15
* src u m1/m2
* src v m3/m4
*/
/* Fragment to compute per-pixel XY values */
include(`exa_wm.g4i')
/* Load X and Y coordinates and compute per-pixel coordinates */
add (16) temp_x_uw<1>UW dst_x_uw 0x10101010V { align1 };
add (16) temp_y_uw<1>UW dst_y_uw 0x11001100V { align1 };
/* subtract screen-space origin of vertex 0 */
add (16) dst_x<1>F temp_x_uw<8,8,1>UW -screen_x0 { compr align1 };
add (16) dst_y<1>F temp_y_uw<8,8,1>UW -screen_y0 { compr align1 };