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Irmen de Jong 2021-11-29 01:10:11 +01:00
parent 45b8762188
commit 56dc6d7f1e
1 changed files with 4 additions and 2 deletions
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compiler/res/prog8lib/cx16/gfx2.p8
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@ -775,6 +775,7 @@ _done
; -- Write some text at the given pixel position. The text string must be in screencode encoding (not petscii!). ; -- Write some text at the given pixel position. The text string must be in screencode encoding (not petscii!).
; You must also have called text_charset() first to select and prepare the character set to use. ; You must also have called text_charset() first to select and prepare the character set to use.
; NOTE: in monochrome (1bpp) screen modes, x position is currently constrained to multiples of 8 ! TODO allow per-pixel horizontal positioning ; NOTE: in monochrome (1bpp) screen modes, x position is currently constrained to multiples of 8 ! TODO allow per-pixel horizontal positioning
; TODO draw whole horizontal spans using vera auto increment if possible, instead of per-character columns
uword chardataptr uword chardataptr
when active_mode { when active_mode {
1, 5 -> { 1, 5 -> {
@ -823,7 +824,6 @@ _done
chardataptr = charset_addr + (@(sctextptr) as uword)*8 chardataptr = charset_addr + (@(sctextptr) as uword)*8
cx16.vaddr(charset_bank, chardataptr, 1, 1) cx16.vaddr(charset_bank, chardataptr, 1, 1)
repeat 8 { repeat 8 {
; TODO rewrite this inner loop fully in assembly
position(x,y) position(x,y)
y++ y++
%asm {{ %asm {{
@ -852,7 +852,9 @@ _done
while @(sctextptr) { while @(sctextptr) {
chardataptr = charset_addr + (@(sctextptr) as uword)*8 chardataptr = charset_addr + (@(sctextptr) as uword)*8
repeat 8 { repeat 8 {
; TODO rewrite this inner loop fully in assembly ; TODO rewrite this inner loop partly in assembly
; requires expanding the charbits to 2-bits per pixel (based on color)
; also it's way more efficient to draw whole horizontal spans instead of per-character
ubyte charbits = cx16.vpeek(charset_bank, chardataptr) ubyte charbits = cx16.vpeek(charset_bank, chardataptr)
repeat 8 { repeat 8 {
charbits <<= 1 charbits <<= 1