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提高窗口移动速度（3）

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Yourtion
2016-05-16 11:25:47 +08:00
parent 883213696f
commit 68781eba2a
1 changed files with 57 additions and 6 deletions
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63
26_day/sheet.c
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@@ -116,7 +116,7 @@ void sheet_refreshmap(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1, in
void sheet_refreshsub(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1, int h0, int h1)
{
int h, bx, by, vx, vy, bx0, by0, bx1, by1;
int h, bx, by, vx, vy, bx0, by0, bx1, by1, bx2, sid4, i, i1, *p, *q, *r;
unsigned char *buf, *vram = ctl->vram, *map = ctl->map, sid;
struct SHEET *sht;
@@ -139,12 +139,63 @@ void sheet_refreshsub(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1, in
if (by0 < 0) { by0 = 0; }
if (bx1 > sht->bxsize) { bx1 = sht->bxsize; } /* 应对不同的重叠方式 */
if (by1 > sht->bysize) { by1 = sht->bysize; }
for (by = by0; by < by1; by++) {
vy = sht->vy0 + by;
for (bx = bx0; bx < bx1; bx++) {
if ((sht->vx0 & 3) == 0) {
/* 4字节型*/
i = (bx0 + 3) / 4; /* bx0除以4（小数进位）*/
i1 = bx1 / 4; /* bx1除以4（小数舍去）*/
i1 = i1 - i;
sid4 = sid | sid << 8 | sid << 16 | sid << 24;
for (by = by0; by < by1; by++) {
vy = sht->vy0 + by;
for (bx = bx0; bx < bx1 && (bx & 3) != 0; bx++) {
/*前面被4除多余的部分逐个字节写入*/
vx = sht->vx0 + bx;
if (map[vy * ctl->xsize + vx] == sid) {
vram[vy * ctl->xsize + vx] = buf[by * sht->bxsize + bx];
}
}
vx = sht->vx0 + bx;
if (map[vy * ctl->xsize + vx] == sid) {
vram[vy * ctl->xsize + vx] = buf[by * sht->bxsize + bx];
p = (int *) &map[vy * ctl->xsize + vx];
q = (int *) &vram[vy * ctl->xsize + vx];
r = (int *) &buf[by * sht->bxsize + bx];
for (i = 0; i < i1; i++) {
/* 4的倍数部分*/
if (p[i] == sid4) {
q[i] = r[i]; /*估计大多数会是这种情况，因此速度会变快*/
} else {
bx2 = bx + i * 4;
vx = sht->vx0 + bx2;
if (map[vy * ctl->xsize + vx + 0] == sid) {
vram[vy * ctl->xsize + vx + 0] = buf[by * sht->bxsize + bx2 + 0];
}
if (map[vy * ctl->xsize + vx + 1] == sid) {
vram[vy * ctl->xsize + vx + 1] = buf[by * sht->bxsize + bx2 + 1];
}
if (map[vy * ctl->xsize + vx + 2] == sid) {
vram[vy * ctl->xsize + vx + 2] = buf[by * sht->bxsize + bx2 + 2];
}
if (map[vy * ctl->xsize + vx + 3] == sid) {
vram[vy * ctl->xsize + vx + 3] = buf[by * sht->bxsize + bx2 + 3];
}
}
}
for (bx += i1 * 4; bx < bx1; bx++) {
/*后面被4除多余的部分逐个字节写入*/
vx = sht->vx0 + bx;
if (map[vy * ctl->xsize + vx] == sid) {
vram[vy * ctl->xsize + vx] = buf[by * sht->bxsize + bx];
}
}
}
} else {
/* 1字节型*/
for (by = by0; by < by1; by++) {
vy = sht->vy0 + by;
for (bx = bx0; bx < bx1; bx++) {
vx = sht->vx0 + bx;
if (map[vy * ctl->xsize + vx] == sid) {
vram[vy * ctl->xsize + vx] = buf[by * sht->bxsize + bx];
}
}
}
}