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optimised _PrintUInt & _FillScreen #40

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merged 2 commits into from Nov 7, 2016
Merged

optimised _PrintUInt & _FillScreen #40

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3d16c0a
optimised _PrintUInt & _FillScreen
Nov 7, 2016
ac35e94
A few minor optimisations here & there
Nov 7, 2016
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30 changes: 18 additions & 12 deletions CEdev/lib/src/graphics/graphx/v2/graphics_lib.asm
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Original file line number Diff line number Diff line change
Expand Up @@ -141,12 +141,12 @@ _SetClipRegion:
; None
call _SetFullScrnClip_ASM \.r ; clip against the actual LCD screen
ld iy,0
lea bc,iy+12
add iy,sp
call _ClipRectRegion_ASM \.r ; iy points to the start of the arguments
lea hl,iy
ret c
lea hl,iy
ld de,_xmin \.r ; copy the variables in
ld bc,12
ldir ; copy in the new structure
ret

Expand Down Expand Up @@ -238,14 +238,22 @@ _FillScreen:
ld hl,3
add hl,sp
ld a,(hl) ; get the color index to use
ld bc,lcdSize-1
ld de,(currDrawBuffer) ; de -> current buffer
or a,a
jr z,_FastFillScreen
sbc hl,hl
add hl,de
inc de
ld (hl),a ; store the new color
ld bc,lcdSize-1
ldir ; fill the screen with color
ret
_FastFillScreen:
ld hl,$e40000
ld bc,lcdSize
ldir
ret


;-------------------------------------------------------------------------------
_SetPalette:
Expand Down Expand Up @@ -973,11 +981,11 @@ _FillCircle_NoClip:
; Returns:
; None
ld iy,0
lea bc,iy+0
add iy,sp
ld a,(iy+9) ; radius
or a,a
ret z
ld bc,0
ld c,a
ld hl,(currDrawBuffer)
ld d,lcdWidth/2
Expand Down Expand Up @@ -1983,13 +1991,13 @@ _ClipDraw_ASM:
; DE : New X coordinate
; NC : If offscreen
ld ix,6 ; get pointer to arguments
ld iy,ix-6
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This doesn't exist :D

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I'm just going to merge anyway and fix myself

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Of course, I meant LEA iy,ix-6 ;)

add ix,sp
ld hl,(ix+3)
ld a,(hl)
ld de,tmpWidth \.r
ld (de),a ; save tmpWidth
ld (tmpSpriteWidth),a \.r ; save tmpSpriteWidth
ld iy,0
add iy,de
inc hl
ld a,(hl)
Expand Down Expand Up @@ -2171,9 +2179,9 @@ _: srl h
sbc hl,hl
ld l,(iy+14)
ld bc,(ix+12)
ld (ix+-3),h
sbc hl,bc
ld (ix+-12),hl
ld (ix+-3),0
jp _Y_Loop_ASM \.r

_X_Res_SMC =$+3
Expand Down Expand Up @@ -2630,10 +2638,9 @@ _PrintUInt_ASM:
ld a,8
sub a,c
ret c ; make sure less than 8
ld c,a
ld b,8
mlt bc
ld a,c
rla
rla
rla
ld (Offset_SMC),a \.r ; select the jump we need
Offset_SMC =$+1
jr $
Expand Down Expand Up @@ -3195,11 +3202,10 @@ _LZDecompress:
; None
push ix
ld ix,0
lea bc,ix
lea bc,ix+1
add ix,sp
lea hl,ix+-20
ld sp,hl
inc bc
ld hl,(ix+12)
or a,a
sbc hl,bc
Expand Down