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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5361 | serge | 1 | /* |
| 2 | * Copyright © 2006 Intel Corporation |
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| 3 | * |
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| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 5 | * copy of this software and associated documentation files (the "Software"), |
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| 6 | * to deal in the Software without restriction, including without limitation |
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| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 9 | * Software is furnished to do so, subject to the following conditions: |
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| 10 | * |
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| 11 | * The above copyright notice and this permission notice (including the next |
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| 12 | * paragraph) shall be included in all copies or substantial portions of the |
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| 13 | * Software. |
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| 14 | * |
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| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
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| 21 | * IN THE SOFTWARE. |
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| 22 | * |
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| 23 | * Authors: |
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| 24 | * Wang Zhenyu |
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| 25 | * Keith Packard |
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| 26 | */ |
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| 27 | |||
| 28 | /* Sample the src surface */ |
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| 29 | |||
| 30 | include(`exa_wm.g4i') |
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| 31 | |||
| 32 | /* subpicture global alpha */ |
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| 33 | define(`global_alpha', `r6.0<0,1,0>f') |
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| 34 | |||
| 35 | /* prepare sampler read back gX register, which would be written back to output */ |
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| 36 | |||
| 37 | /* use simd16 sampler, param 0 is u, param 1 is v. */ |
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| 38 | /* 'payload' loading, assuming tex coord start from g4 */ |
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| 39 | |||
| 40 | /* load argb */ |
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| 41 | mov (1) g0.8<1>UD 0x00000000UD { align1 mask_disable }; |
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| 42 | mov (8) src_msg<1>UD g0<8,8,1>UD { align1 mask_disable }; |
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| 43 | |||
| 44 | /* src_msg will be copied with g0, as it contains send desc */ |
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| 45 | /* emit sampler 'send' cmd */ |
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| 46 | send (16) src_msg_ind /* msg reg index */ |
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| 47 | src_sample_base<1>UW /* readback */ |
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| 48 | null |
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| 49 | sampler (1,0,F) /* sampler message description, (binding_table,sampler_index,datatype) |
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| 50 | /* here(src->dst) we should use src_sampler and src_surface */ |
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| 51 | mlen 5 rlen 8 { align1 }; /* required message len 5, readback len 8 */ |
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| 52 | |||
| 53 | mul (8) src_sample_a_01<1>f src_sample_a_01<8,8,1>f global_alpha { align1 }; |
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| 54 | mul (8) src_sample_a_23<1>f src_sample_a_23<1>f global_alpha { align1 }; |
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| 55 |