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Eliminate spurous screen updates. 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4857 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2008-07-07 23:01:25 +00:00
parent 28e1071183
commit b115bb3feb
2 changed files with 106 additions and 102 deletions
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94
hw/ssd0303.c
View File

@ -203,55 +203,57 @@ static void ssd0303_update_display(void *opaque)
int dest_width;
uint8_t mask;
if (s->redraw) {
switch (s->ds->depth) {
case 0:
return;
case 15:
dest_width = 2;
break;
case 16:
dest_width = 2;
break;
case 24:
dest_width = 3;
break;
case 32:
dest_width = 4;
break;
default:
BADF("Bad color depth\n");
return;
if (!s->redraw)
return;
switch (s->ds->depth) {
case 0:
return;
case 15:
dest_width = 2;
break;
case 16:
dest_width = 2;
break;
case 24:
dest_width = 3;
break;
case 32:
dest_width = 4;
break;
default:
BADF("Bad color depth\n");
return;
}
dest_width *= MAGNIFY;
memset(colortab, 0xff, dest_width);
memset(colortab + dest_width, 0, dest_width);
if (s->flash) {
colors[0] = colortab;
colors[1] = colortab;
} else if (s->inverse) {
colors[0] = colortab;
colors[1] = colortab + dest_width;
} else {
colors[0] = colortab + dest_width;
colors[1] = colortab;
}
dest = s->ds->data;
for (y = 0; y < 16; y++) {
line = (y + s->start_line) & 63;
src = s->framebuffer + 132 * (line >> 3) + 36;
mask = 1 << (line & 7);
for (x = 0; x < 96; x++) {
memcpy(dest, colors[(*src & mask) != 0], dest_width);
dest += dest_width;
src++;
}
dest_width *= MAGNIFY;
memset(colortab, 0xff, dest_width);
memset(colortab + dest_width, 0, dest_width);
if (s->flash) {
colors[0] = colortab;
colors[1] = colortab;
} else if (s->inverse) {
colors[0] = colortab;
colors[1] = colortab + dest_width;
} else {
colors[0] = colortab + dest_width;
colors[1] = colortab;
}
dest = s->ds->data;
for (y = 0; y < 16; y++) {
line = (y + s->start_line) & 63;
src = s->framebuffer + 132 * (line >> 3) + 36;
mask = 1 << (line & 7);
for (x = 0; x < 96; x++) {
memcpy(dest, colors[(*src & mask) != 0], dest_width);
dest += dest_width;
src++;
}
for (x = 1; x < MAGNIFY; x++) {
memcpy(dest, dest - dest_width * 96, dest_width * 96);
dest += dest_width * 96;
}
for (x = 1; x < MAGNIFY; x++) {
memcpy(dest, dest - dest_width * 96, dest_width * 96);
dest += dest_width * 96;
}
}
s->redraw = 0;
dpy_update(s->ds, 0, 0, 96 * MAGNIFY, 16 * MAGNIFY);
}

114
hw/ssd0323.c
View File

@ -184,78 +184,80 @@ static void ssd0323_update_display(void *opaque)
char *p;
int dest_width;
if (s->redraw) {
if (!s->redraw)
return;
switch (s->ds->depth) {
case 0:
return;
case 15:
dest_width = 2;
break;
case 16:
dest_width = 2;
break;
case 24:
dest_width = 3;
break;
case 32:
dest_width = 4;
break;
default:
BADF("Bad color depth\n");
return;
}
p = colortab;
for (i = 0; i < 16; i++) {
int n;
colors[i] = p;
switch (s->ds->depth) {
case 0:
return;
case 15:
dest_width = 2;
n = i * 2 + (i >> 3);
p[0] = n | (n << 5);
p[1] = (n << 2) | (n >> 3);
break;
case 16:
dest_width = 2;
n = i * 2 + (i >> 3);
p[0] = n | (n << 6) | ((n << 1) & 0x20);
p[1] = (n << 3) | (n >> 2);
break;
case 24:
dest_width = 3;
break;
case 32:
dest_width = 4;
n = (i << 4) | i;
p[0] = p[1] = p[2] = n;
break;
default:
BADF("Bad color depth\n");
return;
}
p = colortab;
for (i = 0; i < 16; i++) {
int n;
colors[i] = p;
switch (s->ds->depth) {
case 15:
n = i * 2 + (i >> 3);
p[0] = n | (n << 5);
p[1] = (n << 2) | (n >> 3);
break;
case 16:
n = i * 2 + (i >> 3);
p[0] = n | (n << 6) | ((n << 1) & 0x20);
p[1] = (n << 3) | (n >> 2);
break;
case 24:
case 32:
n = (i << 4) | i;
p[0] = p[1] = p[2] = n;
break;
default:
BADF("Bad color depth\n");
return;
p += dest_width;
}
/* TODO: Implement row/column remapping. */
dest = s->ds->data;
for (y = 0; y < 64; y++) {
line = y;
src = s->framebuffer + 64 * line;
for (x = 0; x < 64; x++) {
int val;
val = *src >> 4;
for (i = 0; i < MAGNIFY; i++) {
memcpy(dest, colors[val], dest_width);
dest += dest_width;
}
p += dest_width;
val = *src & 0xf;
for (i = 0; i < MAGNIFY; i++) {
memcpy(dest, colors[val], dest_width);
dest += dest_width;
}
src++;
}
/* TODO: Implement row/column remapping. */
dest = s->ds->data;
for (y = 0; y < 64; y++) {
line = y;
src = s->framebuffer + 64 * line;
for (x = 0; x < 64; x++) {
int val;
val = *src >> 4;
for (i = 0; i < MAGNIFY; i++) {
memcpy(dest, colors[val], dest_width);
dest += dest_width;
}
val = *src & 0xf;
for (i = 0; i < MAGNIFY; i++) {
memcpy(dest, colors[val], dest_width);
dest += dest_width;
}
src++;
}
for (i = 1; i < MAGNIFY; i++) {
memcpy(dest, dest - dest_width * MAGNIFY * 128,
dest_width * 128 * MAGNIFY);
dest += dest_width * 128 * MAGNIFY;
}
for (i = 1; i < MAGNIFY; i++) {
memcpy(dest, dest - dest_width * MAGNIFY * 128,
dest_width * 128 * MAGNIFY);
dest += dest_width * 128 * MAGNIFY;
}
}
s->redraw = 0;
dpy_update(s->ds, 0, 0, 128 * MAGNIFY, 64 * MAGNIFY);
}