forked from MightyPork/crsn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
93 lines
1.9 KiB
93 lines
1.9 KiB
(
|
|
(sc-init 1024 768)
|
|
(sc-opt SCREEN_AUTOBLIT 0)
|
|
(sc-opt SCREEN_UPSCALE 8)
|
|
(def W 128)
|
|
(def H 96)
|
|
(def MAXITER 50)
|
|
|
|
(sym gradient r9)
|
|
(sym asciigr r10)
|
|
|
|
(mkbf gradient (
|
|
0x421e0f 0x19071a 0x09012f 0x040449 0x000764 0x0c2c8a 0x1852b1 0x397dd1
|
|
0x86b5e5 0xd3ecf8 0xf1e9bf 0xf8c95f 0xffaa00 0xcc8000 0x995700 0x6a3403))
|
|
|
|
(sym x r7)
|
|
(sym y r8)
|
|
(:row)
|
|
(:col)
|
|
(call pixel x y)
|
|
(sub r0 MAXITER 1)
|
|
(rcmp res0 1 r0
|
|
(eq?
|
|
(mod r0 res0 16)
|
|
(bfrd r0 @gradient r0)
|
|
)
|
|
(else? (ld r0 0))
|
|
)
|
|
(sc-wr x y r0)
|
|
(inc x)
|
|
(cmp x W)
|
|
(j.ne :col)
|
|
(ld x 0)
|
|
(inc y)
|
|
(sc-blit) ; Render after every row
|
|
(cmp y H)
|
|
(j.ne :row)
|
|
|
|
;(sc-blit)
|
|
|
|
(:slp)
|
|
(sc-poll)
|
|
(mslp 10)
|
|
(j :slp)
|
|
|
|
(proc pixel xi yi
|
|
(sym x0 r7)
|
|
(sym y0 r8)
|
|
(itf x0 xi)
|
|
(itf y0 yi)
|
|
|
|
; Scale to the interesting range x -2.5..1 and y -1..1
|
|
(itf r0 W)
|
|
(itf r1 H)
|
|
|
|
(fdiv x0 r0)
|
|
(fmul x0 3.5)
|
|
(fsub x0 2.5)
|
|
|
|
(fdiv y0 r1)
|
|
(fmul y0 2.4)
|
|
(fsub y0 1.2)
|
|
|
|
(sym x r5)
|
|
(sym y r6)
|
|
(ld x 0.0)
|
|
(ld y 0.0)
|
|
(sym iter r4)
|
|
|
|
(:iter)
|
|
(cmp iter MAXITER)
|
|
(j.eq :end)
|
|
(fmul r0 x x)
|
|
(fmul r1 y y)
|
|
(fadd r2 r1)
|
|
(fcmp r2 4.0)
|
|
(j.gt :end)
|
|
|
|
(fsub r2 r0 r1)
|
|
(fadd r2 x0)
|
|
|
|
(fmul r0 x y)
|
|
(fmul r0 2.0)
|
|
(fadd r0 y0)
|
|
(ld y r0)
|
|
(ld x r2)
|
|
(inc iter)
|
|
(j :iter)
|
|
|
|
(:end)
|
|
(ret iter)
|
|
)
|
|
)
|
|
|