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/*
* Copyright © 2007 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>
*/
/*
* This's for exa composite operation in no mask picture case.
* The simplest case is just sending what src picture has to dst picture.
*/
/* I think this should be same as in g4a program for texture video,
as we also use 16-pixel dispatch. and SF scale in g3 is useful for us. */
/* The initial payload of the thread is always g0.
* WM_URB (incoming URB entries) is g3
* X0_R is g4
* X1_R is g5
* Y0_R is g6
* Y1_R is g7
*/
/* Set up the X/Y screen coordinates of the pixels in our 4 subspans. Each
* subspan is a 2x2 rectangle, and the screen x/y of the upper left of each
* subspan are given in GRF register 1.2 through 1.5 (which, with the word
* addressing below, are 1.4 through 1.11).
*
* The result is WM_X*_R and WM_Y*R being:
*
* X0: {ss0.x, ss0.x+1, ss0.x, ss0.x+1, ss1.x, ss1.x+1, ss1.x, ss1.x+y}
* Y0: {ss0.y, ss0.y, ss0.y+1, ss0.y+1, ss1.y, ss1.y, ss1.y+1, ss1.y+1}
* X1: {ss2.x, ss2.x+1, ss2.x, ss2.x+1, ss3.x, ss3.x+1, ss3.x, ss3.x+y}
* Y1: {ss2.y, ss2.y, ss2.y+1, ss2.y+1, ss3.y, ss3.y, ss3.y+1, ss3.y+1}
*/
/* Set up ss0.x coordinates*/
mov (1) g4<1>F g1.8<0,1,0>UW { align1 };
add (1) g4.4<1>F g1.8<0,1,0>UW 1UB { align1 };
mov (1) g4.8<1>F g1.8<0,1,0>UW { align1 };
add (1) g4.12<1>F g1.8<0,1,0>UW 1UB { align1 };
/* Set up ss0.y coordinates */
mov (1) g6<1>F g1.10<0,1,0>UW { align1 };
mov (1) g6.4<1>F g1.10<0,1,0>UW { align1 };
add (1) g6.8<1>F g1.10<0,1,0>UW 1UB { align1 };
add (1) g6.12<1>F g1.10<0,1,0>UW 1UB { align1 };
/* set up ss1.x coordinates */
mov (1) g4.16<1>F g1.12<0,1,0>UW { align1 };
add (1) g4.20<1>F g1.12<0,1,0>UW 1UB { align1 };
mov (1) g4.24<1>F g1.12<0,1,0>UW { align1 };
add (1) g4.28<1>F g1.12<0,1,0>UW 1UB { align1 };
/* set up ss1.y coordinates */
mov (1) g6.16<1>F g1.14<0,1,0>UW { align1 };
mov (1) g6.20<1>F g1.14<0,1,0>UW { align1 };
add (1) g6.24<1>F g1.14<0,1,0>UW 1UB { align1 };
add (1) g6.28<1>F g1.14<0,1,0>UW 1UB { align1 };
/* Set up ss2.x coordinates */
mov (1) g5<1>F g1.16<0,1,0>UW { align1 };
add (1) g5.4<1>F g1.16<0,1,0>UW 1UB { align1 };
mov (1) g5.8<1>F g1.16<0,1,0>UW { align1 };
add (1) g5.12<1>F g1.16<0,1,0>UW 1UB { align1 };
/* Set up ss2.y coordinates */
mov (1) g7<1>F g1.18<0,1,0>UW { align1 };
mov (1) g7.4<1>F g1.18<0,1,0>UW { align1 };
add (1) g7.8<1>F g1.18<0,1,0>UW 1UB { align1 };
add (1) g7.12<1>F g1.18<0,1,0>UW 1UB { align1 };
/* Set up ss3.x coordinates */
mov (1) g5.16<1>F g1.20<0,1,0>UW { align1 };
add (1) g5.20<1>F g1.20<0,1,0>UW 1UB { align1 };
mov (1) g5.24<1>F g1.20<0,1,0>UW { align1 };
add (1) g5.28<1>F g1.20<0,1,0>UW 1UB { align1 };
/* Set up ss3.y coordinates */
mov (1) g7.16<1>F g1.22<0,1,0>UW { align1 };
mov (1) g7.20<1>F g1.22<0,1,0>UW { align1 };
add (1) g7.24<1>F g1.22<0,1,0>UW 1UB { align1 };
add (1) g7.28<1>F g1.22<0,1,0>UW 1UB { align1 };
/* Now, map these screen space coordinates into texture coordinates. */
/* subtract screen-space X origin of vertex 0. */
/* for rotation, texture y is from ssX.x, so g4,g5 will be Y */
add (8) g4<1>F g4<8,8,1>F -g1<0,1,0>F { align1 };
add (8) g5<1>F g5<8,8,1>F -g1<0,1,0>F { align1 };
/* scale by texture X increment */
mul (8) g4<1>F g4<8,8,1>F g3.20<0,1,0>F { align1 };
mul (8) g5<1>F g5<8,8,1>F g3.20<0,1,0>F { align1 };
/* add in texture X offset */
add (8) g4<1>F g4<8,8,1>F g3.28<0,1,0>F { align1 };
add (8) g5<1>F g5<8,8,1>F g3.28<0,1,0>F { align1 };
/* texture Y is from ssX.x */
/* subtract screen-space Y origin of vertex 0. */
add (8) g6<1>F g6<8,8,1>F -g1.4<0,1,0>F { align1 };
add (8) g7<1>F g7<8,8,1>F -g1.4<0,1,0>F { align1 };
/* scale by texture Y increment */
mul (8) g6<1>F g6<8,8,1>F g3.16<0,1,0>F { align1 };
mul (8) g7<1>F g7<8,8,1>F g3.16<0,1,0>F { align1 };
/* add in texture Y offset */
add (8) g6<1>F g6<8,8,1>F g3.12<0,1,0>F { align1 };
add (8) g7<1>F g7<8,8,1>F g3.12<0,1,0>F { align1 };
/* 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 */
mov (8) m1<1>F g6<8,8,1>F { align1 };
mov (8) m2<1>F g7<8,8,1>F { align1 };
mov (8) m3<1>F g4<8,8,1>F { align1 };
mov (8) m4<1>F g5<8,8,1>F { align1 };
/* m0 will be copied with g0, as it contains send desc */
/* emit sampler 'send' cmd */
send (16) 0 /* msg reg index */
g12<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 8 { align1 }; /* required message len 5, readback len 8 */
mov (8) g19<1>UD g19<8,8,1>UD { align1 }; /* wait sampler return */
/* if we set up read-back reg correctly, emit dataport write 'send' cmd with EOT */
/* m0, m1 are all direct passed by PS thread payload */
mov (8) m1<1>F g1<8,8,1>F { align1 };
/* prepare data in m2-m5 for subspan(1,0), m6-m9 for subspan(3,2), then it's ready to write */
/* g12 -> m2
g13 -> m6
g14 -> m3
g15 -> m7
g16 -> m4
g17 -> m8
g18 -> m5
g19 -> m9
*/
mov (8) m2<1>F g12<8,8,1>F { align1 };
mov (8) m3<1>F g14<8,8,1>F { align1 };
mov (8) m4<1>F g16<8,8,1>F { align1 };
mov (8) m5<1>F g18<8,8,1>F { align1 };
mov (8) m6<1>F g13<8,8,1>F { align1 };
mov (8) m7<1>F g15<8,8,1>F { align1 };
mov (8) m8<1>F g17<8,8,1>F { align1 };
mov (8) m9<1>F g19<8,8,1>F { align1 };
/* m0, m1 are all direct passed by PS thread payload */
mov (8) m1<1>UD g1<8,8,1>UD { align1 mask_disable };
/* write */
send (16) 0 acc0<1>UW g0<8,8,1>UW write (
0, /* binding_table */
8, /* pixel scordboard clear, msg type simd16 single source */
4, /* render target write */
0 /* no write commit message */
)
mlen 10
rlen 0
{ align1 EOT };
nop;
nop;
nop;
nop;
nop;
nop;
nop;
nop;
nop;
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