diff options
Diffstat (limited to 'src/exa_wm_src_sample_a.g4a')
| -rw-r--r-- | src/exa_wm_src_sample_a.g4a | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/exa_wm_src_sample_a.g4a b/src/exa_wm_src_sample_a.g4a new file mode 100644 index 00000000..803c358a --- /dev/null +++ b/src/exa_wm_src_sample_a.g4a @@ -0,0 +1,47 @@ +/* + * 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> + */ + +/* Sample the src surface */ + +include(`exa_wm.g4i') + +/* prepare sampler read back gX register, which would be written back to output */ + +/* use simd16 sampler, param 0 is u, param 1 is v. */ +/* 'payload' loading, assuming tex coord start from g4 */ + +/* load alpha */ +mov (1) g0.8<1>UD 0x00007000UD { align1 mask_disable }; + +/* src_msg will be copied with g0, as it contains send desc */ +/* emit sampler 'send' cmd */ +send (16) src_msg_ind /* msg reg index */ + src_sample6<1>UW /* readback */ + g0<8,8,1>UW /* copy to msg start reg*/ + sampler (1,0,F) /* sampler message description, (binding_table,sampler_index,datatype) + /* here(src->dst) we should use src_sampler and src_surface */ + mlen 5 rlen 2 { align1 }; /* required message len 5, readback len 8 */ |