1428d7b3dSmrg/* 2428d7b3dSmrg * Copyright © 2006 Intel Corporation 3428d7b3dSmrg * 4428d7b3dSmrg * Permission is hereby granted, free of charge, to any person obtaining a 5428d7b3dSmrg * copy of this software and associated documentation files (the "Software"), 6428d7b3dSmrg * to deal in the Software without restriction, including without limitation 7428d7b3dSmrg * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8428d7b3dSmrg * and/or sell copies of the Software, and to permit persons to whom the 9428d7b3dSmrg * Software is furnished to do so, subject to the following conditions: 10428d7b3dSmrg * 11428d7b3dSmrg * The above copyright notice and this permission notice (including the next 12428d7b3dSmrg * paragraph) shall be included in all copies or substantial portions of the 13428d7b3dSmrg * Software. 14428d7b3dSmrg * 15428d7b3dSmrg * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16428d7b3dSmrg * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17428d7b3dSmrg * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18428d7b3dSmrg * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19428d7b3dSmrg * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20428d7b3dSmrg * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21428d7b3dSmrg * IN THE SOFTWARE. 22428d7b3dSmrg * 23428d7b3dSmrg * Authors: 24428d7b3dSmrg * Wang Zhenyu <zhenyu.z.wang@intel.com> 25428d7b3dSmrg * Keith Packard <keithp@keithp.com> 26428d7b3dSmrg */ 27428d7b3dSmrg 28428d7b3dSmrg/* 29428d7b3dSmrg * Register assignments: 30428d7b3dSmrg * 31428d7b3dSmrg * x g6/g7 32428d7b3dSmrg * y g8/g9 33428d7b3dSmrg * 34428d7b3dSmrg * temp x g10/g11 35428d7b3dSmrg * temp y g12/g13 36428d7b3dSmrg * 37428d7b3dSmrg * src w g14/g15 38428d7b3dSmrg * src u m1/m2 39428d7b3dSmrg * src v m3/m4 40428d7b3dSmrg */ 41428d7b3dSmrg 42428d7b3dSmrg/* Fragment to compute per-pixel XY values */ 43428d7b3dSmrg 44428d7b3dSmrginclude(`exa_wm.g4i') 45428d7b3dSmrg 46428d7b3dSmrg /* Load X and Y coordinates and compute per-pixel coordinates */ 47428d7b3dSmrgadd (16) temp_x_uw<1>UW dst_x_uw 0x10101010V { align1 }; 48428d7b3dSmrgadd (16) temp_y_uw<1>UW dst_y_uw 0x11001100V { align1 }; 49428d7b3dSmrg 50428d7b3dSmrg /* subtract screen-space origin of vertex 0 */ 51428d7b3dSmrgadd (16) dst_x<1>F temp_x_uw<8,8,1>UW -screen_x0 { compr align1 }; 52428d7b3dSmrgadd (16) dst_y<1>F temp_y_uw<8,8,1>UW -screen_y0 { compr align1 }; 53