103b705cfSriastradh/* 203b705cfSriastradh * Copyright © 2006 Intel Corporation 303b705cfSriastradh * 403b705cfSriastradh * Permission is hereby granted, free of charge, to any person obtaining a 503b705cfSriastradh * copy of this software and associated documentation files (the "Software"), 603b705cfSriastradh * to deal in the Software without restriction, including without limitation 703b705cfSriastradh * the rights to use, copy, modify, merge, publish, distribute, sublicense, 803b705cfSriastradh * and/or sell copies of the Software, and to permit persons to whom the 903b705cfSriastradh * Software is furnished to do so, subject to the following conditions: 1003b705cfSriastradh * 1103b705cfSriastradh * The above copyright notice and this permission notice (including the next 1203b705cfSriastradh * paragraph) shall be included in all copies or substantial portions of the 1303b705cfSriastradh * Software. 1403b705cfSriastradh * 1503b705cfSriastradh * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 1603b705cfSriastradh * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 1703b705cfSriastradh * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 1803b705cfSriastradh * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 1903b705cfSriastradh * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 2003b705cfSriastradh * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 2103b705cfSriastradh * IN THE SOFTWARE. 2203b705cfSriastradh * 2303b705cfSriastradh * Authors: 2403b705cfSriastradh * Wang Zhenyu <zhenyu.z.wang@intel.com> 2503b705cfSriastradh * Keith Packard <keithp@keithp.com> 2603b705cfSriastradh */ 2703b705cfSriastradh 2803b705cfSriastradh/* 2903b705cfSriastradh * Register assignments: 3003b705cfSriastradh * 3103b705cfSriastradh * x g6/g7 3203b705cfSriastradh * y g8/g9 3303b705cfSriastradh * 3403b705cfSriastradh * temp x g10/g11 3503b705cfSriastradh * temp y g12/g13 3603b705cfSriastradh * 3703b705cfSriastradh * src w g14/g15 3803b705cfSriastradh * src u m1/m2 3903b705cfSriastradh * src v m3/m4 4003b705cfSriastradh */ 4103b705cfSriastradh 4203b705cfSriastradh/* Fragment to compute per-pixel XY values */ 4303b705cfSriastradh 4403b705cfSriastradhinclude(`exa_wm.g4i') 4503b705cfSriastradh 4603b705cfSriastradh /* Load X and Y coordinates and compute per-pixel coordinates */ 4703b705cfSriastradhadd (16) temp_x_uw<1>UW dst_x_uw 0x10101010V { align1 }; 4803b705cfSriastradhadd (16) temp_y_uw<1>UW dst_y_uw 0x11001100V { align1 }; 4903b705cfSriastradh 5003b705cfSriastradh /* subtract screen-space origin of vertex 0 */ 5103b705cfSriastradhadd (16) dst_x<1>F temp_x_uw<8,8,1>UW -screen_x0 { compr align1 }; 5203b705cfSriastradhadd (16) dst_y<1>F temp_y_uw<8,8,1>UW -screen_y0 { compr align1 }; 53