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Add some contents from Itch page.
Commit Description:
Add some contents from Itch page.
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FNA/lib/MojoShader/tests/1.vsh
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vs_3_sw
def c3056, 1, 2, 3, 4
dcl_position v0
dcl_normal v1
dcl_normal1 v3
dcl_color4 o3.x
dcl_texcoord3 o3.yz
dcl_fog o3.w
dcl_tangent o4.xyz
dcl_position o7.xyzw
dcl_psize o6
#define oPos o7
#define oD0 o3
def c76, -10.0e5, 2.0e4, 3.3e2, 4.4
def c15, 1, 2, 3, 4
defi i1, 1, 2, 3,0
defb b11, true
defb b12, false
if_le v0.x, v1.y
nop
else
nop
endif
mova a0.yw, v0.argb
loop aL, i1
nop
break_le v1.x, r0.y
breakp !p0.y
nop
endloop
; Decompress position
mov r0.x, v0.x
mov r0.y, c4.w ; 1
mov r0.z, v0.y
mov r0.w, c4.w ; 1
setp_ge p0.yz, v1, v1
callnz l1, b11
callnz l1, !p0.w
if !p0.z
m3x2 r0.xy, r1, c0 ;which will be expanded to:
else
nop
endif
call l1
; Debug code [start]
ret
label l1
m3x2 r0.xy, r1, c0 ;which will be expanded to:
mov r0, r0.xz
; Debug code [end]
; Compute theta from distance and time
mov r4.xz, r0 ; xz
mov r4.y, c4.y ; y = 0
dp3 r4.x, r4, r4 ; d2
rsq r4.x, r4.x
rcp r4.x, r4.x ; d
mul r4.xyz, r4, c4.x ; scale by time
; Clamp theta to -pi..pi
add r4.x, r4.x, c7.x
mul r4.x, r4.x, c7.y
frc r4.xy, r4.x
mul r4.x, r4.x, c7.z
add r4.x, r4.x,-c7.x
; Compute first 4 values in sin and cos series
mov r5.x, c4.w ; d^0
mov r4.x, r4.x ; d^1
mul r5.y, r4.x, r4.x ; d^2
mul r4.y, r4.x, r5.y ; d^3
mul r5.z, r5.y, r5.y ; d^4
mul r4.z, r4.x, r5.z ; d^5
mul r5.w, r5.y, r5.z ; d^6
mul r4.w, r4.x, r5.w ; d^7
mul r4, r4, c10 ; sin
dp4 r4.x, r4, c4.w
mul r5, r5, c11 ; cos
dp4 r5.x, r5, c4.w
; Set color
add r5.x, -r5.x, c4.w ; + 1.0
mul oD0, r5.x, c4.z ; * 0.5
; Scale height
mul r0.y, r4.x, c7.w
; Transform position
dp4 oPos.x, r0, c0
dp4 oPos.y, r0, c1
dp4 oPos.z, r0, c2
dp4 oPos.w, r0, c3
ret