(screen.c) Faster drawing of pixel
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1968801862
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@ -23,24 +23,25 @@ static Uint8 blending[4][16] = {
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{2, 3, 1, 2, 2, 3, 1, 2, 2, 3, 1, 2, 2, 3, 1, 2}};
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{2, 3, 1, 2, 2, 3, 1, 2, 2, 3, 1, 2, 2, 3, 1, 2}};
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static void
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static void
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screen_write(UxnScreen *p, Layer *layer, Uint16 x, Uint16 y, Uint8 color)
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screen_pixel(UxnScreen *p, Layer *layer, Uint16 x, Uint16 y, Uint8 color)
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{
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{
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if(x < p->width && y < p->height) {
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if(x >= p->width || y >= p->height)
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Uint32 i = x + y * p->width;
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return;
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if(color != layer->pixels[i]) {
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layer->pixels[x + y * p->width] = color;
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layer->pixels[i] = color;
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layer->changed = 1;
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}
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}
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}
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}
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static void
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static void
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screen_fill(UxnScreen *p, Layer *layer, Uint16 x1, Uint16 y1, Uint16 x2, Uint16 y2, Uint8 color)
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screen_fill(UxnScreen *p, Layer *layer, Uint16 x1, Uint16 y1, Uint16 x2, Uint16 y2, Uint8 color)
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{
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{
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int v, h;
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int x, y;
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for(v = y1; v < y2; v++)
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if(x2 >= p->width) x2 = p->width;
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for(h = x1; h < x2; h++)
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if(y2 >= p->height) y2 = p->height;
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screen_write(p, layer, h, v, color);
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if(x1 >= x2 || y1 >= y2)
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return;
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for(y = y1; y < y2; y++)
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for(x = x1; x < x2; x++)
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layer->pixels[x + y * p->width] = color;
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layer->changed = 1;
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}
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}
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static void
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static void
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@ -52,13 +53,14 @@ screen_blit(UxnScreen *p, Layer *layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8
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for(h = 7; h >= 0; --h, c >>= 1) {
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for(h = 7; h >= 0; --h, c >>= 1) {
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Uint8 ch = (c & 1) | ((c >> 7) & 2);
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Uint8 ch = (c & 1) | ((c >> 7) & 2);
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if(opaque || ch)
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if(opaque || ch)
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screen_write(p,
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screen_pixel(p,
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layer,
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layer,
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x + (flipx ? 7 - h : h),
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x + (flipx ? 7 - h : h),
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y + (flipy ? 7 - v : v),
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y + (flipy ? 7 - v : v),
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blending[ch][color]);
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blending[ch][color]);
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}
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}
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}
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}
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layer->changed = 1;
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}
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}
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void
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void
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@ -137,7 +139,8 @@ screen_deo(Uint8 *ram, Uint8 *d, Uint8 port)
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Uint8 xflip = d[0xe] & 0x10, yflip = d[0xe] & 0x20;
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Uint8 xflip = d[0xe] & 0x10, yflip = d[0xe] & 0x20;
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screen_fill(&uxn_screen, layer, xflip ? 0 : x, yflip ? 0 : y, xflip ? x : uxn_screen.width, yflip ? y : uxn_screen.height, d[0xe] & 0x3);
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screen_fill(&uxn_screen, layer, xflip ? 0 : x, yflip ? 0 : y, xflip ? x : uxn_screen.width, yflip ? y : uxn_screen.height, d[0xe] & 0x3);
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} else {
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} else {
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screen_write(&uxn_screen, layer, x, y, d[0xe] & 0x3);
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screen_pixel(&uxn_screen, layer, x, y, d[0xe] & 0x3);
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layer->changed = 1;
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if(d[0x6] & 0x1) POKE2(d + 0x8, x + 1); /* auto x+1 */
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if(d[0x6] & 0x1) POKE2(d + 0x8, x + 1); /* auto x+1 */
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if(d[0x6] & 0x2) POKE2(d + 0xa, y + 1); /* auto y+1 */
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if(d[0x6] & 0x2) POKE2(d + 0xa, y + 1); /* auto y+1 */
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}
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}
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@ -160,9 +163,9 @@ screen_deo(Uint8 *ram, Uint8 *d, Uint8 port)
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addr += (d[0x6] & 0x04) << (1 + twobpp);
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addr += (d[0x6] & 0x04) << (1 + twobpp);
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}
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}
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}
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}
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POKE2(d + 0x8, x + dx); /* auto x+8 */
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if(d[0x6] & 0x1) POKE2(d + 0x8, x + dx); /* auto x+8 */
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POKE2(d + 0xa, y + dy); /* auto y+8 */
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if(d[0x6] & 0x2) POKE2(d + 0xa, y + dy); /* auto y+8 */
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POKE2(d + 0xc, addr); /* auto addr+length */
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if(d[0x6] & 0x4) POKE2(d + 0xc, addr); /* auto addr+length */
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break;
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break;
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}
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}
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}
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}
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