Apple-2-SW/prog8
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optimized gfx2.plot() for hires-monochrome

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This commit is contained in:
Irmen de Jong 2021-04-28 02:32:11 +02:00
parent a1e4e9c50f
commit 7f0e25cb50
2 changed files with 33 additions and 14 deletions
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31
compiler/res/prog8lib/cx16/gfx2.p8
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@ -552,8 +552,6 @@ _done
ubyte[8] bits = [128, 64, 32, 16, 8, 4, 2, 1]
ubyte[4] mask4c = [%00111111, %11001111, %11110011, %11111100]
ubyte[4] shift4c = [6,4,2,0]
uword addr
cx16.r0L = lsb(x) & 7 ; xbits
when active_mode {
1 -> {
@ -565,6 +563,7 @@ _done
and #1
}}
if_nz {
cx16.r0L = lsb(x) & 7 ; xbits
x /= 8
x += y*(320/8)
%asm {{
@ -611,15 +610,25 @@ _done
and #1
}}
if_nz {
; TODO get rid of all the vpoke calls to optimize all plot() ?
addr = x/8 + y*(640/8)
ubyte value = bits[lsb(x)&7]
if color
cx16.vpoke_or(0, addr, value)
else {
value = ~value
cx16.vpoke_and(0, addr, value)
}
cx16.r0L = lsb(x) & 7 ; xbits
x /= 8
x += y*(640/8)
%asm {{
stz cx16.VERA_CTRL
stz cx16.VERA_ADDR_H
lda x+1
sta cx16.VERA_ADDR_M
lda x
sta cx16.VERA_ADDR_L
ldy cx16.r0L ; xbits
lda bits,y
ldy color
beq +
tsb cx16.VERA_DATA0
bra ++
+ trb cx16.VERA_DATA0
+
}}
}
}
6 -> {

16
examples/test.p8
View File

@ -5,7 +5,7 @@
main {
sub start() {
gfx2.screen_mode(4) ; lo res 256c
gfx2.screen_mode(6) ; highres 4c
gfx2.text_charset(3)
gfx2.text(10, 10, 1, @"Hello!")
@ -14,12 +14,22 @@ main {
ubyte yy
uword rw
;480 jiffies (highres mono) / 442 jiffies (lores 4c)
repeat 50000 {
; 520 jiffies (hires 4c)
repeat 20000 {
rw = rndw()
yy = (lsb(rw) & 127) + 20
gfx2.plot(msb(rw), yy, 1)
}
repeat 20000 {
rw = rndw()
yy = (lsb(rw) & 127) + 20
gfx2.plot(msb(rw), yy, 2)
}
repeat 20000 {
rw = rndw()
yy = (lsb(rw) & 127) + 20
gfx2.plot(msb(rw), yy, 3)
}
repeat 50000 {
rw = rndw()
yy = (lsb(rw) & 127) + 20