source: trunk/Packages/bgrabitmap/phonglightsse.inc

Last change on this file was 2, checked in by chronos, 6 years ago
File size: 2.3 KB
Line 
1 {$asmmode intel}
2 asm
3 {$ifdef cpux86_64}
4 mov rax, Context
5 movaps xmm0,[rax+160] //Context^.vL
6 movaps xmm2,[rax+192] //Context^.vH
7 movaps xmm1,[rax+16] //Context^.Normal
8 {$else}
9 mov eax, Context
10 movaps xmm0,[eax+160] //Context^.vL
11 movaps xmm2,[eax+192] //Context^.vH
12 movaps xmm1,[eax+16] //Context^.Normal
13 {$endif}
14
15 {$IFDEF PARAM_POINTLIGHT}
16 {$ifdef cpux86_64}
17 movaps xmm6,[rax+0] //Context^.Position
18 {$else}
19 movaps xmm6,[eax+0] //Context^.Position
20 {$endif}
21 subps xmm0,xmm6 //xmm0 = vL
22 movaps xmm6, xmm0
23 mulps xmm6, xmm6
24
25 {$IFDEF PARAM_USESSE3}
26 haddps xmm6,xmm6
27 haddps xmm6,xmm6
28 {$ELSE}
29 //mix1
30 movaps xmm7, xmm6
31 shufps xmm7, xmm7, $4e
32 addps xmm6, xmm7
33 //mix2
34 movaps xmm7, xmm6
35 shufps xmm7, xmm7, $11
36 addps xmm6, xmm7
37 {$ENDIF}
38
39 movss dist2, xmm6 //dist2 := vL*vL;
40
41 rsqrtps xmm6, xmm6
42 mulps xmm0, xmm6 //xmm0 = normalized vL
43 {$ENDIF}
44
45 {$IFDEF PARAM_POINTLIGHT}
46 addps xmm2,xmm0 //vH += normalized vL
47 movaps xmm6, xmm2
48 mulps xmm2, xmm2
49
50 {$IFDEF PARAM_USESSE3}
51 haddps xmm2,xmm2
52 haddps xmm2,xmm2
53 {$ELSE}
54 //mix1
55 movaps xmm7, xmm2
56 shufps xmm7, xmm7, $4e
57 addps xmm2, xmm7
58 //mix2
59 movaps xmm7, xmm2
60 shufps xmm7, xmm7, $11
61 addps xmm2, xmm7
62 {$ENDIF}
63
64 rsqrtps xmm2, xmm2
65 mulps xmm2, xmm6 //xmm2 = normalized vH
66 {$ENDIF}
67
68 //vL*Normal
69 mulps xmm0, xmm1
70 //vH*Normal
71 mulps xmm2, xmm1
72
73 {$IFDEF PARAM_USESSE3}
74 haddps xmm0,xmm0
75 haddps xmm0,xmm0
76 {$ELSE}
77 //mix1
78 movaps xmm7, xmm0
79 shufps xmm7, xmm7, $4e
80 addps xmm0, xmm7
81 //mix2
82 movaps xmm7, xmm0
83 shufps xmm7, xmm7, $11
84 addps xmm0, xmm7
85 {$ENDIF}
86
87 {$IFDEF PARAM_USESSE3}
88 haddps xmm2,xmm2
89 haddps xmm2,xmm2
90 {$ELSE}
91 //mix1
92 movaps xmm7, xmm2
93 shufps xmm7, xmm7, $4e
94 addps xmm2, xmm7
95 //mix2
96 movaps xmm7, xmm2
97 shufps xmm7, xmm7, $11
98 addps xmm2, xmm7
99 {$ENDIF}
100
101 movss LdotN, xmm0
102 movss NdotH, xmm2
103 end;
104
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