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author | pbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-07-07 23:01:25 +0000 |
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committer | pbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-07-07 23:01:25 +0000 |
commit | b115bb3febe985bbc81d4dcfd82966fe94c54277 (patch) | |
tree | 4999cda9172a85b7aa887dacee1340c9d4346b00 /hw/ssd0303.c | |
parent | 28e1071183b2bfd27628b7dc1600cf9a3556a6ce (diff) | |
download | qemu-b115bb3febe985bbc81d4dcfd82966fe94c54277.zip qemu-b115bb3febe985bbc81d4dcfd82966fe94c54277.tar.gz qemu-b115bb3febe985bbc81d4dcfd82966fe94c54277.tar.bz2 |
Eliminate spurous screen updates.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4857 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'hw/ssd0303.c')
-rw-r--r-- | hw/ssd0303.c | 94 |
1 files changed, 48 insertions, 46 deletions
diff --git a/hw/ssd0303.c b/hw/ssd0303.c index 7f03237..b0b099f 100644 --- a/hw/ssd0303.c +++ b/hw/ssd0303.c @@ -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; - } - 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; + 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 = 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); } |