| /* |
| * 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 }; |