brooke/mandel-6502
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'wide pixels'

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should get better color on the composite video because the
scanlines will be fuller of data
This commit is contained in:
Brooke Vibber 2024-12-31 20:13:11 -08:00
commit 49fe315529
2 changed files with 8 additions and 12 deletions
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mandel.s
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@ -286,9 +286,9 @@ fill_masks:
.byte %00000000
pixel_masks:
.byte $ff
.byte $0f
.byte $03
.byte %11111111
.byte %11110000
.byte %11000000
viewport_zoom:
.byte 1
@ -1188,18 +1188,15 @@ point:
; pixel_mask <<= pixel_shift (shifting in ones)
and #3
sta pixel_shift
lda #3
sec
sbc pixel_shift
tax
shift_loop:
beq shift_done
asl pixel_color
asl pixel_color
lsr pixel_color
lsr pixel_color
sec
rol pixel_mask
ror pixel_mask
sec
rol pixel_mask
ror pixel_mask
dex
jmp shift_loop
shift_done: