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Tile blitter improvements from Brendan (BluRry)

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This commit is contained in:
David Schmenk 2020-01-09 16:45:17 -08:00
parent 5e0053569e
commit 12f8cf8053
1 changed files with 101 additions and 43 deletions
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144
src/libsrc/apple/hgrtile.pla
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@ -244,8 +244,10 @@ end
// loop
//end
export asm tileDrawStr(x, y, strptr, strlen, tileset)#0
DEC ESTKL+1,X ; STRLEN--
BMI +
LDA ESTKL+0,X ; TILESETPTRL
STA DSTL
LDA ESTKH+0,X ; TILESETPTRH
STA DSTH
LDA ESTKL+2,X ; STRPTRL
STA TMPL
LDA ESTKH+2,X ; STRPTRH
@ -253,17 +255,46 @@ export asm tileDrawStr(x, y, strptr, strlen, tileset)#0
LDY ESTKL+3,X ; Y COORD
LDA ESTKL+4,X ; X COORD
CLC
ADC ESTKL+1,X ; STRLEN
end
asm _tileDrawStr
asm _tileDSa
ADC $1000,Y ; SCANBTTML
STA ESTKL+2,X ; USE ESTK AS POINTER
STA $D000 ; SELF MODIFY LOOP
STA $D001
STA $D002
STA $D003
STA $D004
STA $D005
STA $D006
STA $D007
end
asm _tileDSb
LDA $3001 ; DRAWBUFFH
ADC $2000,Y ; SCANBTTMH
STA ESTKL+3,X
STA $D008 ; SELF MODIFY LOOP
SEC
SBC #$04
STA $D009
SBC #$04
STA $D00A
SBC #$04
STA $D00B
SBC #$04
STA $D00C
SBC #$04
STA $D00D
SBC #$04
STA $D00E
SBC #$04
STA $D00F
LDA ESTKL+1,X ; STRLEN
STX IPY
TAX ; DRAW RIGHT TO LEFT
BEQ +
DEX
LDY #$00
-- STY SRCH
LDY ESTKL+1,X ; STRLEN
- STY SRCH
TXA
TAY
LDA (TMP),Y ; TILE INDEX * 8
ASL
ROL SRCH
@ -271,31 +302,41 @@ asm _tileDrawStr
ROL SRCH
ASL
ROL SRCH
; CLC ; CARRY IS CLEAR FROM ABOVE
ADC ESTKL+0,X ; ADD TO TILESETPTR
; CLC ; CARRY IS CLEAR FROM ABOVE
ADC DSTL ; ADD TO TILESETPTR
STA SRCL
LDA SRCH
ADC ESTKH+0,X
ADC DSTH
STA SRCH
LDY #$07 ; DRAW BOTTOM UP
SEC
- LDA (SRC),Y
STA (ESTKL+2,X)
LDA ESTKL+3,X
SBC #$04
STA ESTKL+3,X
DEY
BNE -
end
asm _tileDSc
LDA (SRC),Y
STA (ESTKL+2,X)
DEC ESTKL+2,X ; RESET SCREEN PTR TO NEXT TILE POS
LDA ESTKL+3,X
; CLC
; ADC #$1C
ADC #$1B ; CARRY STILL SET FROM ABOVE
STA ESTKL+3,X
DEC ESTKL+1,X ; STRLEN--
BPL --
STA $4000,X
DEY
LDA (SRC),Y
STA $4000,X
DEY
LDA (SRC),Y
STA $4000,X
DEY
LDA (SRC),Y
STA $4000,X
DEY
LDA (SRC),Y
STA $4000,X
DEY
LDA (SRC),Y
STA $4000,X
DEY
LDA (SRC),Y
STA $4000,X
DEY
LDA (SRC),Y
STA $4000,X
DEX
BPL -
LDX IPY
+ INX
INX
INX
@ -358,20 +399,37 @@ end
//
// Assembly fixups
//
_tileDraw:1 = @scanbttml
_tileDraw:6 = @drawbuff.1
_tileDraw:9 = @scanbttmh
_tileXDraw:1 = @scanbttml
_tileXDraw:6 = @drawbuff.1
_tileXDraw:9 = @scanbttmh
_tileODraw:1 = @scanbttml
_tileODraw:6 = @drawbuff.1
_tileODraw:9 = @scanbttmh
_tileADraw:1 = @scanbttml
_tileADraw:6 = @drawbuff.1
_tileADraw:9 = @scanbttmh
_tileDrawStr:1 = @scanbttml
_tileDrawStr:6 = @drawbuff.1
_tileDrawStr:9 = @scanbttmh
_tileDraw:1 = @scanbttml
_tileDraw:6 = @drawbuff.1
_tileDraw:9 = @scanbttmh
_tileXDraw:1 = @scanbttml
_tileXDraw:6 = @drawbuff.1
_tileXDraw:9 = @scanbttmh
_tileODraw:1 = @scanbttml
_tileODraw:6 = @drawbuff.1
_tileODraw:9 = @scanbttmh
_tileADraw:1 = @scanbttml
_tileADraw:6 = @drawbuff.1
_tileADraw:9 = @scanbttmh
_tileDSa:1 = @scanbttml
_tileDSa:4 = @_tileDSc.3
_tileDSa:7 = @_tileDSc.9
_tileDSa:10 = @_tileDSc.15
_tileDSa:13 = @_tileDSc.21
_tileDSa:16 = @_tileDSc.27
_tileDSa:19 = @_tileDSc.33
_tileDSa:22 = @_tileDSc.39
_tileDSa:25 = @_tileDSc.45
_tileDSa:28 = @_tileDSc.51
_tileDSb:1 = @drawbuff.1
_tileDSb:4 = @scanbttmh
_tileDSb:7 = @_tileDSc.4
_tileDSb:13 = @_tileDSc.10
_tileDSb:18 = @_tileDSc.16
_tileDSb:23 = @_tileDSc.22
_tileDSb:28 = @_tileDSc.28
_tileDSb:33 = @_tileDSc.34
_tileDSb:38 = @_tileDSc.40
_tileDSb:43 = @_tileDSc.46
done