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