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pcxviewer done

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This commit is contained in:
Irmen de Jong 2020-12-12 03:32:15 +01:00
parent 251f947293
commit e221d674d9
4 changed files with 95 additions and 125 deletions
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16
compiler/res/prog8lib/c64/syslib.p8
View File

@ -269,6 +269,22 @@ asmsub reset_system() {
}}
}
sub wait(uword jiffies) {
uword current_time = 0
c64.SETTIM(0,0,0)
while current_time < jiffies {
; read clock
%asm {{
stx P8ZP_SCRATCH_REG
jsr c64.RDTIM
sta current_time
stx current_time+1
ldx P8ZP_SCRATCH_REG
}}
}
}
asmsub disable_runstop_and_charsetswitch() {
%asm {{
lda #$80

30
compiler/res/prog8lib/cx16/syslib.p8
View File

@ -245,7 +245,7 @@ romsub $fecc = monitor() clobbers(A,X,Y)
; ---- end of kernal routines ----
; ---- utilities -----
asmsub vpeek(ubyte bank @A, uword address @XY) -> ubyte @A {
asmsub vpeek(ubyte bank @A, uword address @XY) -> ubyte @A {
; -- get a byte from VERA's video memory
; note: inefficient when reading multiple sequential bytes!
%asm {{
@ -257,9 +257,9 @@ romsub $fecc = monitor() clobbers(A,X,Y)
lda cx16.VERA_DATA0
rts
}}
}
}
sub vpoke(ubyte bank, uword address, ubyte value) {
sub vpoke(ubyte bank, uword address, ubyte value) {
; -- write a single byte to VERA's video memory
; note: inefficient when writing multiple sequential bytes!
%asm {{
@ -275,10 +275,10 @@ romsub $fecc = monitor() clobbers(A,X,Y)
sta cx16.VERA_DATA0
rts
}}
}
}
sub FB_set_pixels_from_buf(uword buffer, uword count) {
%asm {{
sub FB_set_pixels_from_buf(uword buffer, uword count) {
%asm {{
; -- This is replacement code for the normal FB_set_pixels subroutine in ROM
; However that routine contains a bug in the current v38 ROM that makes it crash when count > 255.
; So the code below replaces that. Once the ROM is patched this routine is no longer necessary.
@ -309,7 +309,25 @@ _loop ldy #0
bne -
rts
}}
}
sub wait(uword jiffies) {
uword current_time = 0
c64.SETTIM(0,0,0)
while current_time < jiffies {
; read clock
%asm {{
phx
jsr c64.RDTIM
sta current_time
stx current_time+1
plx
}}
}
}
; ---- system stuff -----

20
examples/cx16/imgviewer/koalaviewer.p8
View File

@ -45,7 +45,7 @@ main {
txt.print(diskio.status(8))
}
load_image_from_disk(nameptr)
wait()
cx16.wait(60)
}
}
@ -60,29 +60,13 @@ main {
while num_files {
num_files--
load_image_from_disk(filename_ptrs[num_files])
wait()
cx16.wait(60)
}
} else {
txt.print("no *.koa files found\n")
}
}
sub wait() {
uword jiffies = 0
c64.SETTIM(0,0,0)
while jiffies < 60 {
; read clock
%asm {{
stx P8ZP_SCRATCH_REG
jsr c64.RDTIM
sta jiffies
stx jiffies+1
ldx P8ZP_SCRATCH_REG
}}
}
}
sub load_image_from_disk(uword filenameptr) {
; special load routine that uses per-byte loading so it works from an sd-card image
if diskio.f_open(8, filenameptr) {

154
examples/cx16/imgviewer/pcxviewer.p8
View File

@ -7,13 +7,11 @@ main {
sub start() {
graphics.enable_bitmap_mode()
show_pcx_image("nier2mono.pcx")
; if strlen(diskio.status(8)) ; trick to check if we're running on sdcard or host system shared folder
; show_pics_sdcard()
; else {
; txt.print("only works with *.png files on\nsdcard image!\n")
; }
if strlen(diskio.status(8)) ; trick to check if we're running on sdcard or host system shared folder
show_pics_sdcard()
else {
txt.print("only works with files on\nsdcard image!\n")
}
repeat {
;
@ -31,29 +29,13 @@ main {
while num_files {
num_files--
show_pcx_image(filename_ptrs[num_files])
wait()
cx16.wait(120)
}
} else {
txt.print("no *.pcx files found\n")
}
}
sub wait() {
uword jiffies = 0
c64.SETTIM(0,0,0)
while jiffies < 60 {
; read clock
%asm {{
stx P8ZP_SCRATCH_REG
jsr c64.RDTIM
sta jiffies
stx jiffies+1
ldx P8ZP_SCRATCH_REG
}}
}
}
sub show_pcx_image(uword filenameptr) {
ubyte load_ok = false
txt.print(filenameptr)
@ -73,7 +55,6 @@ main {
uword num_colors = 2**bits_per_pixel
if number_of_planes == 1 {
if (width & 7) == 0 {
txt.print("dimensions: ")
txt.print_uw(width)
txt.chrout('x')
txt.print_uw(height)
@ -91,7 +72,6 @@ main {
4 -> load_ok = bitmap.do4bpp(width, height)
1 -> load_ok = bitmap.do1bpp(width, height)
}
txt.print_ub(load_ok)
if load_ok {
txt.clear_screen()
load_ok = c64.CHRIN()
@ -123,7 +103,6 @@ main {
}
sub set_monochrome_palette() {
ubyte c = 0
uword vera_palette_ptr = $fa00
cx16.vpoke(1, vera_palette_ptr, 0)
vera_palette_ptr++
@ -179,18 +158,19 @@ bitmap {
uword offsety
uword py
uword px
ubyte y_ok = true
ubyte y_ok
ubyte status
sub init_plot(uword width, uword height) {
sub start_plot(uword width, uword height) {
offsetx = 0
offsety = 0
y_ok = true
py = 0
px = 0
if width < graphics.WIDTH
offsetx = (graphics.WIDTH - width) / 2
offsetx = (graphics.WIDTH - width - 1) / 2
if height < graphics.HEIGHT
offsety = (graphics.HEIGHT - height) / 2
offsety = (graphics.HEIGHT - height - 1) / 2
status = (not c64.READST()) or c64.READST()==64
}
@ -200,118 +180,90 @@ bitmap {
cx16.FB_cursor_position()
}
sub next_scanline() {
px = 0
py++
y_ok = py < graphics.HEIGHT-1
set_cursor(0, py)
status = (not c64.READST()) or c64.READST()==64
}
sub do1bpp(uword width, uword height) -> ubyte {
init_plot(width, height)
start_plot(width, height)
set_cursor(0, 0)
while py < height and status {
ubyte b = c64.CHRIN()
if b>>6==3 {
ubyte rle = b & %00111111
b = c64.CHRIN()
if y_ok {
repeat rle {
cx16.FB_set_8_pixels(b, 255)
px += 8
b &= %00111111
ubyte dat = c64.CHRIN()
repeat b {
if y_ok {
cx16.r0 = dat
cx16.FB_set_8_pixels_opaque(255, 255, 0)
}
px += 8
}
} else {
if y_ok
cx16.FB_set_8_pixels(b, 255)
px+=8
}
if px >= width {
px = 0
py++
set_cursor(0, py)
y_ok = py < graphics.HEIGHT - 1
status = (not c64.READST()) or c64.READST()==64
if y_ok {
cx16.r0 = b
cx16.FB_set_8_pixels_opaque(255, 255, 0)
}
px += 8
}
if px==width
next_scanline()
}
return status
; asmsub reversebits(ubyte b @A) -> ubyte @A {
; %asm {{
; stz P8ZP_SCRATCH_B1
; asl a
; ror P8ZP_SCRATCH_B1
; asl a
; ror P8ZP_SCRATCH_B1
; asl a
; ror P8ZP_SCRATCH_B1
; asl a
; ror P8ZP_SCRATCH_B1
; asl a
; ror P8ZP_SCRATCH_B1
; asl a
; ror P8ZP_SCRATCH_B1
; asl a
; ror P8ZP_SCRATCH_B1
; asl a
; ror P8ZP_SCRATCH_B1
; lda P8ZP_SCRATCH_B1
; rts
; }}
; }
}
sub do4bpp(uword width, uword height) -> ubyte {
init_plot(width, height)
start_plot(width, height)
set_cursor(0, 0)
while py < height and status {
ubyte b = c64.CHRIN()
if b>>6==3 {
ubyte rle = b & %00111111
b = c64.CHRIN()
b &= %00111111
ubyte dat = c64.CHRIN()
if y_ok
repeat rle {
cx16.FB_set_pixel(b>>4 & 15)
cx16.FB_set_pixel(b & 15)
repeat b {
cx16.FB_set_pixel(dat>>4)
cx16.FB_set_pixel(dat & 15)
}
px += rle*2
px += b*2
} else {
if y_ok {
cx16.FB_set_pixel(b>>4 & 15)
cx16.FB_set_pixel(b>>4)
cx16.FB_set_pixel(b & 15)
}
px+=2
}
if px == width {
px = 0
py++
y_ok = py < graphics.HEIGHT-1
set_cursor(0, py)
status = (not c64.READST()) or c64.READST()==64
px += 2
}
if px==width
next_scanline()
}
return status
}
sub do8bpp(uword width, uword height) -> ubyte {
init_plot(width, height)
start_plot(width, height)
set_cursor(0, 0)
while py < height and status {
ubyte b = c64.CHRIN()
if b>>6==3 {
ubyte rle = b & %00111111
b = c64.CHRIN()
b &= %00111111
ubyte dat = c64.CHRIN()
if y_ok
repeat rle
cx16.FB_set_pixel(b)
px += rle
repeat b
cx16.FB_set_pixel(dat)
px += b
} else {
if y_ok
cx16.FB_set_pixel(b)
px++
}
if px == width {
px = 0
py++
y_ok = py < graphics.HEIGHT-1
set_cursor(0, py)
status = (not c64.READST()) or c64.READST()==64
}
if px==width
next_scanline()
}
return status