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|
/* 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. */
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 g12<1>UW g0<8,8,1>UW sampler (1,0,F) mlen 5 rlen 8 { align1 };
mov (8) g19<1>UW g19<8,8,1>UW { 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.
*/
/* Y = Y - 16/255 */
add (8) g14<1>F g14<8,8,1>F -0.0627451F { align1 };
/* Cr = Cr - 128/255 */
add (8) g12<1>F g12<8,8,1>F -0.501961F { align1 };
/* Cb = Cb - 128 / 255 */
add (8) g16<1>F g16<8,8,1>F -0.501961F { align1 };
/* Y = Y * 1.164 */
mul (8) g14<1>F g14<8,8,1>F 1.164F { align1 };
/* acc = 1.596 * Cr */
mul (8) null g12<8,8,1>F 1.596F { align1 };
/* R = acc + Y */
mac.sat (8) m2<1>F g14<8,8,1>F 1F { align1 };
/* acc = Cr * -0.813 */
mul (8) null g12<8,8,1>F -0.813F { align1 };
/* acc += Cb * -0.392 */
mac (8) null g16<8,8,1>F -0.392F { align1 };
/* G = acc + Y */
mac.sat (8) m3<1>F g14<8,8,1>F 1F { align1 };
/* acc = Cb * 2.017 */
mul (8) null g16<8,8,1>F 2.017F { align1 };
/* B = acc + Y */
mac.sat (8) m4<1>F g14<8,8,1>F 1F { align1 };
/* and do it again */
add (8) g15<1>F g15<8,8,1>F -0.0627451F { align1 };
add (8) g13<1>F g13<8,8,1>F -0.501961F { align1 };
add (8) g17<1>F g17<8,8,1>F -0.501961F { align1 };
mul (8) g15<1>F g15<8,8,1>F 1.164F { align1 };
mul (8) null g13<8,8,1>F 1.596F { align1 };
mac.sat (8) m6<1>F g15<8,8,1>F 1F { align1 };
mul (8) null g13<8,8,1>F -0.813F { align1 };
mac (8) null g17<8,8,1>F -0.392F { align1 };
mac.sat (8) m7<1>F g15<8,8,1>F 1F { align1 };
mul (8) null g17<8,8,1>F 2.017F { align1 };
mac.sat (8) m8<1>F g15<8,8,1>F 1F { 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;
|
