/* * 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: * Keith Packard * Eric Anholt * */ include(`exa_wm.g4i') define(`YCbCr_base', `g12') define(`Cr', `g12') define(`Cr_01', `g12') define(`Cr_23', `g13') define(`Y', `g14') define(`Y_01', `g14') define(`Y_23', `g15') define(`Cb', `g16') define(`Cb_01', `g16') define(`Cb_23', `g17') /* 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 1UD { 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 1UD { 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 1UD { align1 }; add (1) g6.12<1>F g1.10<0,1,0>UW 1UD { 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 1UD { 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 1UD { 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 1UD { align1 }; add (1) g6.28<1>F g1.14<0,1,0>UW 1UD { 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 1UD { 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 1UD { 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 1UD { align1 }; add (1) g7.12<1>F g1.18<0,1,0>UW 1UD { 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 1UD { 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 1UD { 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 1UD { align1 }; add (1) g7.28<1>F g1.22<0,1,0>UW 1UD { align1 }; /* Now, map these screen space coordinates into texture coordinates. */ /* subtract screen-space X origin of vertex 0. */ 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<0,1,0>F { align1 }; mul (8) g5<1>F g5<8,8,1>F g3<0,1,0>F { align1 }; /* add in texture X offset */ add (8) g4<1>F g4<8,8,1>F g3.12<0,1,0>F { align1 }; add (8) g5<1>F g5<8,8,1>F g3.12<0,1,0>F { align1 }; /* 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 g3.20<0,1,0>F { align1 }; mul (8) g7<1>F g7<8,8,1>F g3.20<0,1,0>F { align1 }; /* add in texture Y offset */ add (8) g6<1>F g6<8,8,1>F g3.28<0,1,0>F { align1 }; add (8) g7<1>F g7<8,8,1>F g3.28<0,1,0>F { align1 }; /* sampler */ mov (8) m1<1>F g4<8,8,1>F { align1 }; mov (8) m2<1>F g5<8,8,1>F { align1 }; mov (8) m3<1>F g6<8,8,1>F { align1 }; mov (8) m4<1>F g7<8,8,1>F { align1 }; /* * g0 holds the PS thread payload, which (oddly) contains * precisely what the sampler wants to see in m0 */ send (16) 0 /* load g0 to m0 */ YCbCr_base<1>UW g0<8,8,1>UW sampler (1,0,F) mlen 5 rlen 8 { align1 }; /* color space conversion function: * R = Clamp ( 1.164(Y-16/255) + 1.596(Cr-128/255), 0, 1) * G = Clamp ( 1.164(Y-16/255) - 0.813(Cr-128/255) - 0.392(Cb-128/255), 0, 1) * B = Clamp ( 1.164(Y-16/255) + 2.017(Cb-128/255), 0, 1) * * Y is g14, g15. * Cr is g12, g13. * Cb is g16, g17. * * R is g2, g6. * G is g3, g7. * B is g4, g8. */ /* Normalize Y, Cb and Cr: * * Y = (Y - 16/255) * 1.164 * Cr = Cr - 128 / 255 * Cb = Cb - 128 / 255 */ add (16) Y<1>F Y<8,8,1>F -0.0627451F { compr align1 }; mul (16) Y<1>F Y<8,8,1>F 1.164F { compr align1 }; add (16) Cr<1>F Cr<8,8,1>F -0.501961F { compr align1 }; add (16) Cb<1>F Cb<8,8,1>F -0.501961F { compr align1 }; /* * R = Y + Cr * 1.596 */ mul (8) null Cr_01<8,8,1>F 1.596F { align1 }; mac.sat (8) data_port_r_01<1>F Y_01<8,8,1>F 1F { align1 }; mul (8) null Cr_23<8,8,1>F 1.596F { align1 }; mac.sat (8) data_port_r_23<1>F Y_23<8,8,1>F 1F { align1 }; /* * G = Cr * -0.813 + Cb * -0.392 + Y */ mul (8) null Cr_01<8,8,1>F -0.813F { align1 }; mac (8) null Cb_01<8,8,1>F -0.392F { align1 }; mac.sat (8) data_port_g_01<1>F Y_01<8,8,1>F 1F { align1 }; mul (8) null Cr_23<8,8,1>F -0.813F { align1 }; mac (8) null Cb_23<8,8,1>F -0.392F { align1 }; mac.sat (8) data_port_g_23<1>F Y_23<8,8,1>F 1F { align1 }; /* * B = Cb * 2.017 + Y */ mul (8) null Cb_01<8,8,1>F 2.017F { align1 }; mac.sat (8) data_port_b_01<1>F Y_01<8,8,1>F 1F { align1 }; mul (8) null Cb_23<8,8,1>F 2.017F { align1 }; mac.sat (8) data_port_b_23<1>F Y_23<8,8,1>F 1F { align1 }; /* * A = 1.0 */ mov (8) data_port_a_01<1>F 1.0F { align1 }; mov (8) data_port_a_23<1>F 1.0F { align1 }; /* * Pass through control information: */ mov (8) m1<1>UD g1<8,8,1>UD { align1 mask_disable }; /* * Send framebuffer write message: XXX: acc0? */ send (16) 0 acc0<1>UW g0<8,8,1>UW write ( 0, /* binding table index 0 */ 8, /* pixel scoreboard clear */ 4, /* render target write */ 0 /* no write commit message */ ) mlen 10 rlen 0 { align1 EOT }; /* padding */ nop; nop; nop; nop; nop; nop; nop; nop;