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(screen) Ported screen to use PEEK2

This commit is contained in:
Devine Lu Linvega 2023-04-10 10:47:05 -07:00
parent a60a2a05d9
commit 1bda3b77f0
3 changed files with 36 additions and 33 deletions
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61
src/devices/screen.c
View File

@ -53,6 +53,15 @@ screen_blit(UxnScreen *p, Layer *layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8
}
}
static void
screen_wipe(UxnScreen *p, Layer *layer, Uint16 x, Uint16 y)
{
int v, h;
for(v = 0; v < 8; v++)
for(h = 0; h < 8; h++)
screen_write(p, layer, x + h, y + v, 0);
}
static void
layer_clear(UxnScreen *p, Layer *layer)
{
@ -122,14 +131,14 @@ clamp(int val, int min, int max)
/* IO */
Uint8
screen_dei(Uint8 *d, Uint8 port)
screen_dei(Uxn *u, Uint8 addr)
{
switch(port) {
case 0x2: return uxn_screen.width >> 8;
case 0x3: return uxn_screen.width;
case 0x4: return uxn_screen.height >> 8;
case 0x5: return uxn_screen.height;
default: return d[port];
switch(addr) {
case 0x22: return uxn_screen.width >> 8;
case 0x23: return uxn_screen.width;
case 0x24: return uxn_screen.height >> 8;
case 0x25: return uxn_screen.height;
default: return u->dev[addr];
}
}
@ -138,49 +147,43 @@ screen_deo(Uint8 *ram, Uint8 *d, Uint8 port)
{
switch(port) {
case 0x3:
if(!FIXED_SIZE) {
Uint16 w;
PEKDEV(w, 0x2);
screen_resize(&uxn_screen, clamp(w, 1, 1024), uxn_screen.height);
}
if(!FIXED_SIZE)
screen_resize(&uxn_screen, clamp(PEEK2(d + 2), 1, 1024), uxn_screen.height);
break;
case 0x5:
if(!FIXED_SIZE) {
Uint16 h;
PEKDEV(h, 0x4);
screen_resize(&uxn_screen, uxn_screen.width, clamp(h, 1, 1024));
}
if(!FIXED_SIZE)
screen_resize(&uxn_screen, uxn_screen.width, clamp(PEEK2(d + 4), 1, 1024));
break;
case 0xe: {
Uint16 x, y;
Uint16 x = PEEK2(d + 0x8), y = PEEK2(d + 0xa);
Uint8 layer = d[0xe] & 0x40;
PEKDEV(x, 0x8);
PEKDEV(y, 0xa);
screen_write(&uxn_screen, layer ? &uxn_screen.fg : &uxn_screen.bg, x, y, d[0xe] & 0x3);
if(d[0x6] & 0x01) POKDEV(0x8, x + 1); /* auto x+1 */
if(d[0x6] & 0x02) POKDEV(0xa, y + 1); /* auto y+1 */
if(d[0x6] & 0x01) POKE2(d + 0x8, x + 1); /* auto x+1 */
if(d[0x6] & 0x02) POKE2(d + 0xa, y + 1); /* auto y+1 */
break;
}
case 0xf: {
Uint16 x, y, dx, dy, addr;
Uint16 x = PEEK2(d + 0x8), y = PEEK2(d + 0xa), dx, dy, addr = PEEK2(d + 0xc);
Uint8 i, n, twobpp = !!(d[0xf] & 0x80);
Layer *layer = (d[0xf] & 0x40) ? &uxn_screen.fg : &uxn_screen.bg;
PEKDEV(x, 0x8);
PEKDEV(y, 0xa);
PEKDEV(addr, 0xc);
n = d[0x6] >> 4;
dx = (d[0x6] & 0x01) << 3;
dy = (d[0x6] & 0x02) << 2;
if(addr > 0x10000 - ((n + 1) << (3 + twobpp)))
return;
for(i = 0; i <= n; i++) {
if(!(d[0xf] & 0xf))
screen_wipe(&uxn_screen, layer, x + dy * i, y + dx * i);
else {
screen_blit(&uxn_screen, layer, x + dy * i, y + dx * i, &ram[addr], d[0xf] & 0xf, d[0xf] & 0x10, d[0xf] & 0x20, twobpp);
addr += (d[0x6] & 0x04) << (1 + twobpp);
}
POKDEV(0xc, addr); /* auto addr+length */
POKDEV(0x8, x + dx); /* auto x+8 */
POKDEV(0xa, y + dy); /* auto y+8 */
}
POKE2(d + 0xc, addr); /* auto addr+length */
POKE2(d + 0x8, x + dx); /* auto x+8 */
POKE2(d + 0xa, y + dy); /* auto y+8 */
break;
}
}
}

2
src/devices/screen.h
View File

@ -28,6 +28,6 @@ void screen_resize(UxnScreen *p, Uint16 width, Uint16 height);
void screen_clear(UxnScreen *p);
void screen_redraw(UxnScreen *p, Uint32 *pixels);
Uint8 screen_dei(Uint8 *d, Uint8 port);
Uint8 screen_dei(Uxn *u, Uint8 addr);
void screen_deo(Uint8 *ram, Uint8 *d, Uint8 port);
int clamp(int val, int min, int max);

2
src/uxn11.c
View File

@ -52,7 +52,7 @@ emu_dei(Uxn *u, Uint8 addr)
{
Uint8 p = addr & 0x0f, d = addr & 0xf0;
switch(d) {
case 0x20: return screen_dei(&u->dev[d], p);
case 0x20: return screen_dei(u, addr);
case 0xa0: return file_dei(0, &u->dev[d], p);
case 0xb0: return file_dei(1, &u->dev[d], p);
case 0xc0: return datetime_dei(&u->dev[d], p);