2 * Copyright © 2006 Intel Corporation
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:
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
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
24 * Wang Zhenyu <zhenyu.z.wang@intel.com>
25 * Keith Packard <keithp@keithp.com>
28 /* Sample the src surface */
32 /* prepare sampler read back gX register, which would be written back to output */
34 /* use simd16 sampler, param 0 is u, param 1 is v. */
35 /* 'payload' loading, assuming tex coord start from g4 */
38 mov (1) g0.8<1>UD 0x00007000UD { align1 mask_disable };
39 mov (8) src_msg<1>UD g0<8,8,1>UD { align1 }; /* copy to msg start reg*/
41 /* src_msg will be copied with g0, as it contains send desc */
42 /* emit sampler 'send' cmd */
43 send (16) src_msg_ind /* msg reg index */
44 src_sample_a_01<1>UW /* readback */
46 sampler (1,0,F) /* sampler message description, (binding_table,sampler_index,datatype)
47 /* here(src->dst) we should use src_sampler and src_surface */
48 mlen 5 rlen 2 { align1 }; /* required message len 5, readback len 8 */