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/*
* 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>
*/
/*
* 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
*/
/* Load X and Y coordinates and compute per-pixel coordinates */
add (16) g4<1>UW g1.8<2,4,0>UW 0x10101010V { align1 };
add (16) g6<1>UW g1.10<2,4,0>UW 0x11001100V { align1 };
/* Now, map these screen space coordinates into texture coordinates. */
/* subtract screen-space X origin of vertex 0. */
add (16) g12<1>F g4<8,8,1>UW -g1.0<0,1,0>F { compr align1 };
/* subtract screen-space Y origin of vertex 0. */
add (16) g16<1>F g6<8,8,1>UW -g1.4<0,1,0>F { compr align1 };
/* g8/g9 = X * du/dx */
mul (16) g8<1>F g12<8,8,1>F g3.0<0,1,0>F { compr align1 };
/* g10/g11 = Y * du/dy */
mul (16) g10<1>F g16<8,8,1>F g3.4<0,1,0>F { compr align1 };
/* g8/g9 = X du/dx + Y du/dy */
add (16) g8<1>F g8<8,8,1>F g10<8,8,1>F { compr align1 };
/* m1/m2 = g8/g9 + uo */
add (16) m1<1>F g8<8,8,1>F g3.12<0,1,0>F { compr align1 };
/* g8/g9 = X * dv/dx */
mul (16) g8<1>F g12<8,8,1>F g3.16<0,1,0>F { compr align1 };
/* g10/g11 = Y * du/dy */
mul (16) g10<1>F g16<8,8,1>F g3.20<0,1,0>F { compr align1 };
/* g8/g9 = X du/dx + Y du/dy */
add (16) g8<1>F g8<8,8,1>F g10<8,8,1>F { compr align1 };
/* m3/m4 = g8/g9 + vo */
add (16) m3<1>F g8<8,8,1>F g3.28<0,1,0>F { compr 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 */
/* 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 };
/* 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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