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hgr: sier: not able to speed up

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This commit is contained in:
Vince Weaver 2022-09-28 14:34:13 -04:00
parent 8b0a032119
commit bbed9e6a95
2 changed files with 188 additions and 19 deletions
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28
graphics/hgr/parallax/sier.s
View File

@ -13,8 +13,6 @@
; Zero Page
GBASL = $26
GBASH = $27
H2 = $2C
COLOR = $30
HGR_X = $E0
HGR_Y = $E2
@ -22,14 +20,8 @@ HGR_COLOR = $E4
HGR_HORIZ = $E5
HGR_PAGE = $E6
FRAME = $F0
FRAME2 = $F1
FRAME4 = $F2
X2 = $FB
COLORS = $FC
; Soft Switches
PAGE1 = $C054 ; Page1
PAGE2 = $C055 ; Page2
@ -39,22 +31,22 @@ PAGE2 = $C055 ; Page2
HGR = $F3E2
HGR2 = $F3D8
HCLR = $F3F2
HPLOT0 = $F457 ;; plot at (Y,X), (A)
WAIT = $FCA8 ;; delay 1/2(26+27A+5A^2) us
HPOSN = $F411 ; (Y,X),(A) (values stores in HGRX,XH,Y)
HPLOT0 = $F457 ; plot at (Y,X), (A)
WAIT = $FCA8 ; delay 1/2(26+27A+5A^2) us
HPOSN = $F411 ; (Y,X),(A) (valued stores in HGRX,XH,Y)
hgr_lookup_h = $1000
hgr_lookup_l = $1100
div4_lookup = $90
parallax:
;===================
; init screen
jsr HGR
jsr HGR2
jsr HGR ; clear PAGE1
jsr HGR2 ; clear PAGE2
;===================
; int tables
@ -154,8 +146,8 @@ medium_smc:
adc #$DD ; go other way ; 2
and div4_lookup,X ; sierpinski ; 4
bne draw_black ; draw black ; 2/3
bne draw_black ; draw black ; 2/3
draw_purple:
lda #$55 ; purple/green ; 2
bne draw_color ; bra ; 3
@ -181,6 +173,4 @@ out_smc:
cpy #32 ; 2
bne yloop ; 2/3
beq parallax_forever ; 2/3
beq parallax_forever ; bra ; 3

179
graphics/hgr/parallax/super_sier.s Normal file
View File

@ -0,0 +1,179 @@
; Parallax Sierpinski/xor boxes HGR
; by deater (Vince Weaver) <vince@deater.net>
; Already heavily optimized:
; only 128 lines
; frame 0: 27c78 = 162,936 cycles = roughly 6.1 fps
; full 192 lines
; frame 0: 3bf5f = 245,599 cycles = roughly 4 fps
; Zero Page
GBASL = $26
GBASH = $27
HGR_X = $E0
HGR_Y = $E2
HGR_COLOR = $E4
HGR_HORIZ = $E5
HGR_PAGE = $E6
; Soft Switches
PAGE1 = $C054 ; Page1
PAGE2 = $C055 ; Page2
; ROM routines
HGR = $F3E2
HGR2 = $F3D8
HCLR = $F3F2
HPLOT0 = $F457 ; plot at (Y,X), (A)
WAIT = $FCA8 ; delay 1/2(26+27A+5A^2) us
HPOSN = $F411 ; (Y,X),(A) (valued stores in HGRX,XH,Y)
hgr_lookup_h = $1000
hgr_lookup_l = $1100
div4_lookup = $90
color_lookup = $1200
parallax:
;===================
; init screen
jsr HGR ; clear PAGE1
jsr HGR2 ; clear PAGE2
;===================
; int tables
ldx #191
init_loop:
txa
pha
jsr HPOSN
pla
tax
lda GBASL
sta hgr_lookup_l,X
lda GBASH
and #$1F ; 20 30 001X 40 50 010X
sta hgr_lookup_h,X
dex
cpx #$ff
bne init_loop
ldx #39
div4_loop:
txa
asl
asl
sta div4_lookup,X
dex
bpl div4_loop
parallax_forever:
; increment offsets
inc large_smc+1 ; 6
inc medium_smc+1 ; 6
;========================
; flip page
lda HGR_PAGE ; $40 or $20
eor #$60 ; flip draw_page
sta HGR_PAGE
asl
asl
rol
eor #$1
tax
lda PAGE1,X ; flip show_page
ldy #159 ; init Y
yloop:
;==============
; point output to current line
lda hgr_lookup_l,Y ; 4+
sta out_smc+1 ; 4
lda hgr_lookup_h,Y ; 4+
ora HGR_PAGE ; 3
sta out_smc+2 ; 4
;==============
; current column (work backwards)
ldx #39 ; 2
xloop:
;===========================
; Boxes
tya ; 2
; carry always clear here?
large_smc:
sbc #$DD ; 2
; eor div4_lookup,X ; 4
; and #$40 ; 2
and div4_lookup,X ; 4
bne draw_white ; 2/3
; 0 means transparent
skip_color_large:
;===========================
; Sierpinski
tya ; 2
medium_smc:
adc #$DD ; go other way ; 2
and div4_lookup,X ; sierpinski ; 4
bne draw_black ; draw black ; 2/3
draw_purple:
lda #$55 ; purple/green ; 2
bne draw_color ; bra ; 3
draw_black:
lda #$00 ; 2
beq draw_color ; bra ; 3
; white block
draw_white:
lda #$7f ; 2
;========================
; actually draw color
draw_color:
out_smc:
sta $2000,X ; 5
dex ; 2
bpl xloop ; 2/3
dey ; 2
cpy #32 ; 2
bne yloop ; 2/3
beq parallax_forever ; bra ; 3