提高叠加处理速度（1）

10_day/bootpack.c

@@ -6,16 +6,15 @@
 void HariMain(void)
 {
 	struct BOOTINFO *binfo = (struct BOOTINFO *) ADR_BOOTINFO;
-	char s[40], mcursor[256], keybuf[32], mousebuf[128];
+	char s[40], keybuf[32], mousebuf[128];
 	int mx, my, i;
+	unsigned int memtotal;
 	struct MOUSE_DEC mdec;
+	struct MEMMAN *memman = (struct MEMMAN *) MEMMAN_ADDR;
 	struct SHTCTL *shtctl;
 	struct SHEET *sht_back, *sht_mouse;
 	unsigned char *buf_back, buf_mouse[256];
 
-	unsigned int memtotal;
-	struct MEMMAN *memman = (struct MEMMAN *) MEMMAN_ADDR;
-
 	init_gdtidt();
 	init_pic();
 	io_sti(); /* IDT/PIC的初始化已经完成，于是开放CPU的中断 */
@@ -34,9 +33,9 @@ void HariMain(void)
 
 	init_palette();
 	shtctl = shtctl_init(memman, binfo->vram, binfo->scrnx, binfo->scrny);
-	sht_back = sheet_alloc(shtctl);
+	sht_back  = sheet_alloc(shtctl);
 	sht_mouse = sheet_alloc(shtctl);
-	buf_back = (unsigned char *) memman_alloc_4k(memman, binfo->scrnx * binfo->scrny);
+	buf_back  = (unsigned char *) memman_alloc_4k(memman, binfo->scrnx * binfo->scrny);
 	sheet_setbuf(sht_back, buf_back, binfo->scrnx, binfo->scrny, -1); /* 没有透明色 */
 	sheet_setbuf(sht_mouse, buf_mouse, 16, 16, 99); /* 透明色号99 */
 	init_screen8(buf_back, binfo->scrnx, binfo->scrny);
@@ -45,13 +44,13 @@ void HariMain(void)
 	mx = (binfo->scrnx - 16) / 2; /* 按显示在画面中央来计算坐标 */
 	my = (binfo->scrny - 28 - 16) / 2;
 	sheet_slide(shtctl, sht_mouse, mx, my);
-	sheet_updown(shtctl, sht_back, 0);
+	sheet_updown(shtctl, sht_back,  0);
 	sheet_updown(shtctl, sht_mouse, 1);
 	sprintf(s, "(%3d, %3d)", mx, my);
 	putfonts8_asc(buf_back, binfo->scrnx, 0, 0, COL8_FFFFFF, s);
 	sprintf(s, "memory %dMB free : %dKB", memtotal / (1024 * 1024), memman_total(memman) / 1024);
 	putfonts8_asc(buf_back, binfo->scrnx, 0, 32, COL8_FFFFFF, s);
-	sheet_refresh(shtctl);
+	sheet_refresh(shtctl, sht_back, 0, 0, binfo->scrnx, 48); /* 刷新文字 */
 
 	for (;;) {
 		io_cli();
@@ -62,9 +61,9 @@ void HariMain(void)
 				i = fifo8_get(&keyfifo);
 				io_sti();
 				sprintf(s, "%02X", i);
-				boxfill8(buf_back, binfo->scrnx, COL8_008484, 0, 16, 15, 31);
+				boxfill8(buf_back, binfo->scrnx, COL8_008484,  0, 16, 15, 31);
 				putfonts8_asc(buf_back, binfo->scrnx, 0, 16, COL8_FFFFFF, s);
-				sheet_refresh(shtctl);
+				sheet_refresh(shtctl, sht_back, 0, 16, 16, 32); /* 刷新文字 */
 			} else if (fifo8_status(&mousefifo) != 0) {
 				i = fifo8_get(&mousefifo);
 				io_sti();
@@ -82,6 +81,7 @@ void HariMain(void)
 					}
 					boxfill8(buf_back, binfo->scrnx, COL8_008484, 32, 16, 32 + 15 * 8 - 1, 31);
 					putfonts8_asc(buf_back, binfo->scrnx, 32, 16, COL8_FFFFFF, s);
+					sheet_refresh(shtctl, sht_back, 32, 16, 32 + 15 * 8, 32);  /* 刷新文字 */
 					/* 移动光标 */
 					mx += mdec.x;
 					my += mdec.y;
@@ -100,9 +100,10 @@ void HariMain(void)
 					sprintf(s, "(%3d, %3d)", mx, my);
 					boxfill8(buf_back, binfo->scrnx, COL8_008484, 0, 0, 79, 15); /* 消坐标 */
 					putfonts8_asc(buf_back, binfo->scrnx, 0, 0, COL8_FFFFFF, s); /* 写坐标 */
+					sheet_refresh(shtctl, sht_back, 0, 0, 80, 16); /* 刷新文字 */
 					sheet_slide(shtctl, sht_mouse, mx, my); /* 包含sheet_refresh含sheet_refresh */
 				}
 			}
 		}
 	}
-}
+}

10_day/bootpack.h

@@ -162,6 +162,6 @@ struct SHTCTL *shtctl_init(struct MEMMAN *memman, unsigned char *vram, int xsize
 struct SHEET *sheet_alloc(struct SHTCTL *ctl);
 void sheet_setbuf(struct SHEET *sht, unsigned char *buf, int xsize, int ysize, int col_inv);
 void sheet_updown(struct SHTCTL *ctl, struct SHEET *sht, int height);
-void sheet_refresh(struct SHTCTL *ctl);
+void sheet_refresh(struct SHTCTL *ctl, struct SHEET *sht, int bx0, int by0, int bx1, int by1);
 void sheet_slide(struct SHTCTL *ctl, struct SHEET *sht, int vx0, int vy0);
 void sheet_free(struct SHTCTL *ctl, struct SHEET *sht);

10_day/sheet.c

@@ -77,7 +77,7 @@ void sheet_updown(struct SHTCTL *ctl, struct SHEET *sht, int height)
 			}
 			ctl->top--; /* 由于显示中的图层减少了一个，所以最上面的图层高度下降 */
 		}
-		sheet_refresh(ctl); /* 按新图层的信息重新绘制画面 */    
+		sheet_refreshsub(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize, sht->vy0 + sht->bysize); /* 按新图层的信息重新绘制画面 */    
 	} else if (old < height) { /* 比以前高 */
 		if (old >= 0) {
 		/* 把中间的拉下去 */
@@ -95,12 +95,20 @@ void sheet_updown(struct SHTCTL *ctl, struct SHEET *sht, int height)
 			ctl->sheets[height] = sht;
 			ctl->top++; /* 由于已显示的图层增加了1个，所以最上面的图层高度增加 */
 		}
-		sheet_refresh(ctl); /* 按新图层信息重新绘制画面 */
+		sheet_refreshsub(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize, sht->vy0 + sht->bysize); /* 按新图层信息重新绘制画面 */
 	}
 	return;
 }
 
-void sheet_refresh(struct SHTCTL *ctl)
+void sheet_refresh(struct SHTCTL *ctl, struct SHEET *sht, int bx0, int by0, int bx1, int by1)
+{
+	if (sht->height >= 0) { /* 如果正在显示，则按新图层的信息刷新画面*/
+		sheet_refreshsub(ctl, sht->vx0 + bx0, sht->vy0 + by0, sht->vx0 + bx1, sht->vy0 + by1);
+	}
+	return;
+}
+
+void sheet_refreshsub(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1)
 {
 	int h, bx, by, vx, vy;
 	unsigned char *buf, c, *vram = ctl->vram;
@@ -112,9 +120,11 @@ void sheet_refresh(struct SHTCTL *ctl)
 			vy = sht->vy0 + by;
 			for (bx = 0; bx < sht->bxsize; bx++) {
 				vx = sht->vx0 + bx;
-				c = buf[by * sht->bxsize + bx];
-				if (c != sht->col_inv) {
-					vram[vy * ctl->xsize + vx] = c;
+				if (vx0 <= vx && vx < vx1 && vy0 <= vy && vy < vy1) {
+					c = buf[by * sht->bxsize + bx];
+					if (c != sht->col_inv) {
+						vram[vy * ctl->xsize + vx] = c;
+					}
 				}
 			}
 		}
@@ -124,10 +134,12 @@ void sheet_refresh(struct SHTCTL *ctl)
 
 void sheet_slide(struct SHTCTL *ctl, struct SHEET *sht, int vx0, int vy0)
 {
+	int old_vx0 = sht->vx0, old_vy0 = sht->vy0;
 	sht->vx0 = vx0;
 	sht->vy0 = vy0;
-	if (sht->height >= 0) { /* 如果正在显示*/
-		sheet_refresh(ctl); /* 按新图层的信息刷新画面 */
+	if (sht->height >= 0) { /* 如果正在显示，则按新图层的信息刷新画面 */
+		sheet_refreshsub(ctl, old_vx0, old_vy0, old_vx0 + sht->bxsize, old_vy0 + sht->bysize);
+		sheet_refreshsub(ctl, vx0, vy0, vx0 + sht->bxsize, vy0 + sht->bysize);
 	}
 	return;
 }