mirror of https://git.sr.ht/~rabbits/uxn
(screen) Cache temp values
This commit is contained in:
Devine Lu Linvega
parent
1796eb938f
commit
6ba21f8470
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@ -198,6 +198,10 @@ screen_redraw(Uxn *u)
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pixels[i] = palette[fg[i] << 2 | bg[i]];
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}
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/* cache */
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static Uint16 rX, rY, rA;
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Uint8
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screen_dei(Uxn *u, Uint8 addr)
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{
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@ -206,6 +210,12 @@ screen_dei(Uxn *u, Uint8 addr)
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case 0x23: return uxn_screen.width;
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case 0x24: return uxn_screen.height >> 8;
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case 0x25: return uxn_screen.height;
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case 0x28: return rX >> 8;
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case 0x29: return rX;
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case 0x2a: return rY >> 8;
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case 0x2b: return rY;
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case 0x2c: return rA >> 8;
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case 0x2d: return rA;
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default: return u->dev[addr];
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}
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}
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@ -213,42 +223,43 @@ screen_dei(Uxn *u, Uint8 addr)
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void
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screen_deo(Uint8 *ram, Uint8 *d, Uint8 port)
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{
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Uint8 *port_x, *port_y, *port_addr;
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Uint16 x, y, dx, dy, dxy, dyx, addr, addr_incr;
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Uint16 dx, dy, dxy, dyx, addr_incr;
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switch(port) {
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case 0x3: screen_resize(PEEK2(d + 2), uxn_screen.height); break;
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case 0x5: screen_resize(uxn_screen.width, PEEK2(d + 4)); break;
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case 0x8:
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case 0x9: rX = (d[0x8] << 8) | d[0x9]; break;
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case 0xa:
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case 0xb: rY = (d[0xa] << 8) | d[0xb]; break;
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case 0xc:
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case 0xd: rA = (d[0xc] << 8) | d[0xd]; break;
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case 0xe: {
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Uint8 ctrl = d[0xe];
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Uint8 color = ctrl & 0x3;
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Uint8 *layer = ctrl & 0x40 ? uxn_screen.fg : uxn_screen.bg;
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port_x = d + 0x8;
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port_y = d + 0xa;
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/* fill mode */
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if(ctrl & 0x80) {
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Uint16 x2, y2;
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Uint16 x1, y1, x2, y2;
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if(ctrl & 0x10)
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x = 0, x2 = PEEK2(port_x);
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x1 = 0, x2 = rX;
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else
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x = PEEK2(port_x), x2 = uxn_screen.width;
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x1 = rX, x2 = uxn_screen.width;
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if(ctrl & 0x20)
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y = 0, y2 = PEEK2(port_y);
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y1 = 0, y2 = rY;
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else
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y = PEEK2(port_y), y2 = uxn_screen.height;
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screen_rect(layer, x, y, x2, y2, color);
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screen_change(x, y, x2, y2);
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y1 = rY, y2 = uxn_screen.height;
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screen_rect(layer, x1, y1, x2, y2, color);
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screen_change(x1, y1, x2, y2);
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}
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/* pixel mode */
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else {
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Uint8 move = d[0x6];
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Uint16 w = uxn_screen.width;
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x = PEEK2(port_x);
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y = PEEK2(port_y);
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if(x < w && y < uxn_screen.height)
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layer[x + y * w] = color;
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screen_change(x, y, x + 1, y + 1);
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if(move & 0x1) POKE2(port_x, x + 1);
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if(move & 0x2) POKE2(port_y, y + 1);
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if(rX < w && rY < uxn_screen.height)
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layer[rX + rY * w] = color;
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screen_change(rX, rY, rX + 1, rY + 1);
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if(move & 0x1) rX++;
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if(move & 0x2) rY++;
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}
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break;
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}
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@ -260,35 +271,27 @@ screen_deo(Uint8 *ram, Uint8 *d, Uint8 port)
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Uint8 twobpp = !!(ctrl & 0x80);
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Uint8 color = ctrl & 0xf;
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Uint8 *layer = ctrl & 0x40 ? uxn_screen.fg : uxn_screen.bg;
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Uint16 addr = rA;
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int fx = ctrl & 0x10 ? -1 : 1;
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int fy = ctrl & 0x20 ? -1 : 1;
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port_x = d + 0x8;
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port_y = d + 0xa;
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port_addr = d + 0xc;
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x = PEEK2(port_x), dx = (move & 0x1) << 3, dxy = dx * fy;
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y = PEEK2(port_y), dy = (move & 0x2) << 2, dyx = dy * fx;
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addr = PEEK2(port_addr), addr_incr = (move & 0x4) << (1 + twobpp);
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dx = (move & 0x1) << 3, dxy = dx * fy;
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dy = (move & 0x2) << 2, dyx = dy * fx;
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addr_incr = (move & 0x4) << (1 + twobpp);
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if(twobpp) {
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for(i = 0; i <= length; i++) {
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screen_2bpp(layer, &ram[addr], x + dyx * i, y + dxy * i, color, fx, fy);
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screen_2bpp(layer, &ram[addr], rX + dyx * i, rY + dxy * i, color, fx, fy);
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addr += addr_incr;
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}
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} else {
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for(i = 0; i <= length; i++) {
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screen_1bpp(layer, &ram[addr], x + dyx * i, y + dxy * i, color, fx, fy);
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screen_1bpp(layer, &ram[addr], rX + dyx * i, rY + dxy * i, color, fx, fy);
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addr += addr_incr;
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}
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}
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screen_change(x, y, x + dyx * length + 8, y + dxy * length + 8);
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if(move & 0x1) {
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x += dx * fx;
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POKE2(port_x, x);
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}
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if(move & 0x2) {
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y += dy * fy;
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POKE2(port_y, y);
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}
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if(move & 0x4) POKE2(port_addr, addr); /* auto addr+length */
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screen_change(rX, rY, rX + dyx * length + 8, rY + dxy * length + 8);
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if(move & 0x1) rX += dx * fx;
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if(move & 0x2) rY += dy * fy;
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if(move & 0x4) rA = addr; /* auto addr+length */
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break;
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}
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}
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@ -497,7 +497,7 @@ main(int argc, char **argv)
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/* flags */
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if(argc > 1 && argv[i][0] == '-') {
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if(!strcmp(argv[i], "-v"))
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return system_error("Uxnemu - Varvara Emulator(GUI)", "2 Jan 2024.");
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return system_error("Uxnemu - Varvara Emulator(GUI)", "3 Jan 2024.");
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else if(!strcmp(argv[i], "-2x"))
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set_zoom(2, 0);
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else if(!strcmp(argv[i], "-3x"))
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