commit 79c1964

Use pointer in 1bpp sprites

 1@@ -606,16 +606,17 @@ screen_draw_sprite(void)
 2 	} else {
 3 		const int addr_incr = rMA << 1;
 4 		for(i = 0; i <= rML; i++, x += dyx, y += dxy, rA += addr_incr) {
 5-			const Uint16 ymar2 = MAR2(y), xmar2 = MAR2(x);
 6+			const Uint16 xmar2 = x + 16, ymar2 = y + 16;
 7 			if(xmar2 < screen_wmar2 && ymar2 < screen_hmar2) {
 8-				const Uint16 xmar = MAR(x), ymar = MAR(y);
 9 				const Uint8 *sprite = &ram[rA];
10+				const Uint16 xmar = x + 8, ymar = y + 8;
11 				for(ay = ymar * screen_wmar2, by = ymar2 * screen_wmar2, qy = qfy; ay < by; ay += screen_wmar2, qy += fy) {
12 					const int ch1 = sprite[qy];
13-					for(ax = xmar + ay, bx = xmar2 + ay, qx = qfx; ax < bx; ax++, qx -= fx) {
14-						const int color = ch1 >> qx & 1;
15+					Uint8 *dst = &screen_layers[xmar + ay];
16+					for(int px = 0, qx = qfx; px < 8; px++, qx -= fx, dst++) {
17+						const int color = (ch1 >> qx) & 1;
18 						if(opaque || color)
19-							screen_layers[ax] = (screen_layers[ax] & layer_mask) | table[color];
20+							*dst = (*dst & layer_mask) | table[color];
21 					}
22 				}
23 			}