static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl)
{
VGACommonState *vga = &qxl->vga;
int i;
if (qxl->guest_primary.resized) {
qxl->guest_primary.resized = 0;
qxl->guest_primary.data = qxl_phys2virt(qxl,
qxl->guest_primary.surface.mem,
MEMSLOT_GROUP_GUEST);
if (!qxl->guest_primary.data) {
return;
}
qxl_set_rect_to_surface(qxl, &qxl->dirty[0]);
qxl->num_dirty_rects = 1;
trace_qxl_render_guest_primary_resized(
qxl->guest_primary.surface.width,
qxl->guest_primary.surface.height,
qxl->guest_primary.qxl_stride,
qxl->guest_primary.bytes_pp,
qxl->guest_primary.bits_pp);
if (qxl->guest_primary.qxl_stride > 0) {
qemu_free_displaysurface(vga->ds);
vga->ds->surface = qemu_create_displaysurface_from
(qxl->guest_primary.surface.width,
qxl->guest_primary.surface.height,
qxl->guest_primary.bits_pp,
qxl->guest_primary.abs_stride,
qxl->guest_primary.data);
} else {
qemu_resize_displaysurface(vga->ds,
qxl->guest_primary.surface.width,
qxl->guest_primary.surface.height);
}
dpy_resize(vga->ds);
}
if (!qxl->guest_primary.data) {
return;
}
for (i = 0; i < qxl->num_dirty_rects; i++) {
if (qemu_spice_rect_is_empty(qxl->dirty+i)) {
break;
}
if (qxl->dirty[i].left < 0 ||
qxl->dirty[i].top < 0 ||
qxl->dirty[i].left > qxl->dirty[i].right ||
qxl->dirty[i].top > qxl->dirty[i].bottom ||
qxl->dirty[i].right > qxl->guest_primary.surface.width ||
qxl->dirty[i].bottom > qxl->guest_primary.surface.height) {
continue;
}
qxl_blit(qxl, qxl->dirty+i);
dpy_update(vga->ds,
qxl->dirty[i].left, qxl->dirty[i].top,
qxl->dirty[i].right - qxl->dirty[i].left,
qxl->dirty[i].bottom - qxl->dirty[i].top);
}
qxl->num_dirty_rects = 0;
}
static void vgafb_update_display(void *opaque)
{
MilkymistVgafbState *s = opaque;
int first = 0;
int last = 0;
drawfn fn;
if (!vgafb_enabled(s)) {
return;
}
int dest_width = s->regs[R_HRES];
switch (ds_get_bits_per_pixel(s->ds)) {
case 0:
return;
case 8:
fn = draw_line_8;
break;
case 15:
fn = draw_line_15;
dest_width *= 2;
break;
case 16:
fn = draw_line_16;
dest_width *= 2;
break;
case 24:
fn = draw_line_24;
dest_width *= 3;
break;
case 32:
fn = draw_line_32;
dest_width *= 4;
break;
default:
hw_error("milkymist_vgafb: bad color depth\n");
break;
}
framebuffer_update_display(s->ds,
s->regs[R_BASEADDRESS] + s->fb_offset,
s->regs[R_HRES],
s->regs[R_VRES],
s->regs[R_HRES] * 2,
dest_width,
0,
s->invalidate,
fn,
NULL,
&first, &last);
if (first >= 0) {
dpy_update(s->ds, 0, first, s->regs[R_HRES], last - first + 1);
}
s->invalidate = 0;
}
/* This copies data from the guest framebuffer region, into QEMU's copy
* NB. QEMU's copy is stored in the pixel format of a) the local X
* server (SDL case) or b) the current VNC client pixel format.
* When shifting between colour depths we preserve the MSB.
*/
static void xenfb_guest_copy(struct xenfb *xenfb, int x, int y, int w, int h)
{
int line;
if (!xenfb->ds->shared_buf) {
if (xenfb->depth == xenfb->ds->depth) { /* Perfect match can use fast path */
for (line = y ; line < (y+h) ; line++) {
memcpy(xenfb->ds->data + (line * xenfb->ds->linesize) + (x * xenfb->ds->depth / 8),
xenfb->pixels + xenfb->offset + (line * xenfb->row_stride) + (x * xenfb->depth / 8),
w * xenfb->depth / 8);
}
} else { /* Mismatch requires slow pixel munging */
/* 8 bit == r:3 g:3 b:2 */
/* 16 bit == r:5 g:6 b:5 */
/* 24 bit == r:8 g:8 b:8 */
/* 32 bit == r:8 g:8 b:8 (padding:8) */
if (xenfb->depth == 8) {
if (xenfb->ds->depth == 16) {
BLT(uint8_t, uint16_t, 3, 3, 2, 5, 6, 5);
} else if (xenfb->ds->depth == 32) {
BLT(uint8_t, uint32_t, 3, 3, 2, 8, 8, 8);
}
} else if (xenfb->depth == 16) {
if (xenfb->ds->depth == 8) {
BLT(uint16_t, uint8_t, 5, 6, 5, 3, 3, 2);
} else if (xenfb->ds->depth == 32) {
BLT(uint16_t, uint32_t, 5, 6, 5, 8, 8, 8);
}
} else if (xenfb->depth == 24 || xenfb->depth == 32) {
if (xenfb->ds->depth == 8) {
BLT(uint32_t, uint8_t, 8, 8, 8, 3, 3, 2);
} else if (xenfb->ds->depth == 16) {
BLT(uint32_t, uint16_t, 8, 8, 8, 5, 6, 5);
} else if (xenfb->ds->depth == 32) {
BLT(uint32_t, uint32_t, 8, 8, 8, 8, 8, 8);
}
}
}
}
dpy_update(xenfb->ds, x, y, w, h);
}
/*
* This copies data from the guest framebuffer region, into QEMU's
* displaysurface. qemu uses 16 or 32 bpp. In case the pv framebuffer
* uses something else we must convert and copy, otherwise we can
* supply the buffer directly and no thing here.
*/
static void xenfb_guest_copy(struct XenFB *xenfb, int x, int y, int w, int h)
{
int line, oops = 0;
int bpp = ds_get_bits_per_pixel(xenfb->c.ds);
int linesize = ds_get_linesize(xenfb->c.ds);
uint8_t *data = ds_get_data(xenfb->c.ds);
if (!is_buffer_shared(xenfb->c.ds->surface)) {
switch (xenfb->depth) {
case 8:
if (bpp == 16) {
BLT(uint8_t, uint16_t, 3, 3, 2, 5, 6, 5);
} else if (bpp == 32) {
BLT(uint8_t, uint32_t, 3, 3, 2, 8, 8, 8);
} else {
oops = 1;
}
break;
case 24:
if (bpp == 16) {
BLT(uint32_t, uint16_t, 8, 8, 8, 5, 6, 5);
} else if (bpp == 32) {
BLT(uint32_t, uint32_t, 8, 8, 8, 8, 8, 8);
} else {
oops = 1;
}
break;
default:
oops = 1;
}
}
if (oops) /* should not happen */
xen_be_printf(&xenfb->c.xendev, 0, "%s: oops: convert %d -> %d bpp?\n",
__FUNCTION__, xenfb->depth, bpp);
dpy_update(xenfb->c.ds, x, y, w, h);
}
/* This copies data from the guest framebuffer region, into QEMU's copy
* NB. QEMU's copy is stored in the pixel format of a) the local X
* server (SDL case) or b) the current VNC client pixel format.
* When shifting between colour depths we preserve the MSB.
*/
static void xenfb_guest_copy(struct xenfb *xenfb, int x, int y, int w, int h)
{
int line;
if (xenfb->depth == xenfb->ds->depth) { /* Perfect match can use fast path */
for (line = y ; line < (y+h) ; line++) {
memcpy(xenfb->ds->data + (line * xenfb->ds->linesize) + (x * xenfb->ds->depth / 8),
xenfb->pixels + (line * xenfb->row_stride) + (x * xenfb->depth / 8),
w * xenfb->depth / 8);
}
} else { /* Mismatch requires slow pixel munging */
if (xenfb->depth == 8) {
/* 8 bit source == r:3 g:3 b:2 */
if (xenfb->ds->depth == 16) {
BLT(uint8_t, uint16_t, 5, 2, 0, 11, 5, 0, 7, 7, 3);
} else if (xenfb->ds->depth == 32) {
BLT(uint8_t, uint32_t, 5, 2, 0, 16, 8, 0, 7, 7, 3);
}
} else if (xenfb->depth == 16) {
/* 16 bit source == r:5 g:6 b:5 */
if (xenfb->ds->depth == 8) {
BLT(uint16_t, uint8_t, 11, 5, 0, 5, 2, 0, 31, 63, 31);
} else if (xenfb->ds->depth == 32) {
BLT(uint16_t, uint32_t, 11, 5, 0, 16, 8, 0, 31, 63, 31);
}
} else if (xenfb->depth == 32) {
/* 32 bit source == r:8 g:8 b:8 (padding:8) */
if (xenfb->ds->depth == 8) {
BLT(uint32_t, uint8_t, 16, 8, 0, 5, 2, 0, 255, 255, 255);
} else if (xenfb->ds->depth == 16) {
BLT(uint32_t, uint16_t, 16, 8, 0, 11, 5, 0, 255, 255, 255);
}
}
}
dpy_update(xenfb->ds, x, y, w, h);
}
static void tcx24_update_display(void *opaque)
{
TCXState *ts = opaque;
ram_addr_t page, page_min, page_max, cpage, page24;
int y, y_start, dd, ds;
uint8_t *d, *s;
uint32_t *cptr, *s24;
if (ds_get_bits_per_pixel(ts->ds) != 32)
return;
page = 0;
page24 = ts->vram24_offset;
cpage = ts->cplane_offset;
y_start = -1;
page_min = -1;
page_max = 0;
d = ds_get_data(ts->ds);
s = ts->vram;
s24 = ts->vram24;
cptr = ts->cplane;
dd = ds_get_linesize(ts->ds);
ds = 1024;
for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE,
page24 += TARGET_PAGE_SIZE, cpage += TARGET_PAGE_SIZE) {
if (check_dirty(ts, page, page24, cpage)) {
if (y_start < 0)
y_start = y;
if (page < page_min)
page_min = page;
if (page > page_max)
page_max = page;
tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
d += dd;
s += ds;
cptr += ds;
s24 += ds;
tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
d += dd;
s += ds;
cptr += ds;
s24 += ds;
tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
d += dd;
s += ds;
cptr += ds;
s24 += ds;
tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
d += dd;
s += ds;
cptr += ds;
s24 += ds;
} else {
if (y_start >= 0) {
/* flush to display */
dpy_update(ts->ds, 0, y_start,
ts->width, y - y_start);
y_start = -1;
}
d += dd * 4;
s += ds * 4;
cptr += ds * 4;
s24 += ds * 4;
}
}
if (y_start >= 0) {
/* flush to display */
dpy_update(ts->ds, 0, y_start,
ts->width, y - y_start);
}
/* reset modified pages */
if (page_max >= page_min) {
reset_dirty(ts, page_min, page_max, page24, cpage);
}
}
/* Fixed line length 1024 allows us to do nice tricks not possible on
VGA... */
static void tcx_update_display(void *opaque)
{
TCXState *ts = opaque;
ram_addr_t page, page_min, page_max;
int y, y_start, dd, ds;
uint8_t *d, *s;
void (*f)(TCXState *s1, uint8_t *dst, const uint8_t *src, int width);
if (ds_get_bits_per_pixel(ts->ds) == 0)
return;
page = 0;
y_start = -1;
page_min = -1;
page_max = 0;
d = ds_get_data(ts->ds);
s = ts->vram;
dd = ds_get_linesize(ts->ds);
ds = 1024;
switch (ds_get_bits_per_pixel(ts->ds)) {
case 32:
f = tcx_draw_line32;
break;
case 15:
case 16:
f = tcx_draw_line16;
break;
default:
case 8:
f = tcx_draw_line8;
break;
case 0:
return;
}
for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE) {
if (memory_region_get_dirty(&ts->vram_mem, page, TARGET_PAGE_SIZE,
DIRTY_MEMORY_VGA)) {
if (y_start < 0)
y_start = y;
if (page < page_min)
page_min = page;
if (page > page_max)
page_max = page;
f(ts, d, s, ts->width);
d += dd;
s += ds;
f(ts, d, s, ts->width);
d += dd;
s += ds;
f(ts, d, s, ts->width);
d += dd;
s += ds;
f(ts, d, s, ts->width);
d += dd;
s += ds;
} else {
if (y_start >= 0) {
/* flush to display */
dpy_update(ts->ds, 0, y_start,
ts->width, y - y_start);
y_start = -1;
}
d += dd * 4;
s += ds * 4;
}
}
if (y_start >= 0) {
/* flush to display */
dpy_update(ts->ds, 0, y_start,
ts->width, y - y_start);
}
/* reset modified pages */
if (page_max >= page_min) {
memory_region_reset_dirty(&ts->vram_mem,
page_min, page_max + TARGET_PAGE_SIZE,
DIRTY_MEMORY_VGA);
}
}
static void pl110_update_display(void *opaque)
{
pl110_state *s = (pl110_state *)opaque;
drawfn* fntable;
drawfn fn;
int dest_width;
int src_width;
int bpp_offset;
int first;
int last;
if (!pl110_enabled(s))
return;
switch (ds_get_bits_per_pixel(s->ds)) {
case 0:
return;
case 8:
fntable = pl110_draw_fn_8;
dest_width = 1;
break;
case 15:
fntable = pl110_draw_fn_15;
dest_width = 2;
break;
case 16:
fntable = pl110_draw_fn_16;
dest_width = 2;
break;
case 24:
fntable = pl110_draw_fn_24;
dest_width = 3;
break;
case 32:
fntable = pl110_draw_fn_32;
dest_width = 4;
break;
default:
fprintf(stderr, "pl110: Bad color depth\n");
exit(1);
}
if (s->cr & PL110_CR_BGR)
bpp_offset = 0;
else
bpp_offset = 18;
if (s->cr & PL110_CR_BEBO)
fn = fntable[s->bpp + 6 + bpp_offset];
else if (s->cr & PL110_CR_BEPO)
fn = fntable[s->bpp + 12 + bpp_offset];
else
fn = fntable[s->bpp + bpp_offset];
src_width = s->cols;
switch (s->bpp) {
case BPP_1:
src_width >>= 3;
break;
case BPP_2:
src_width >>= 2;
break;
case BPP_4:
src_width >>= 1;
break;
case BPP_8:
break;
case BPP_16:
src_width <<= 1;
break;
case BPP_32:
src_width <<= 2;
break;
}
dest_width *= s->cols;
first = 0;
framebuffer_update_display(s->ds,
s->upbase, s->cols, s->rows,
src_width, dest_width, 0,
s->invalidate,
fn, s->pallette,
&first, &last);
if (first >= 0) {
dpy_update(s->ds, 0, first, s->cols, last - first + 1);
}
s->invalidate = 0;
}
static void bcm2708_fb_update(void *_opaque)
{
struct bcm2708_vc *vc = _opaque;
drawfn* fntable;
drawfn fn;
int dest_width;
int src_width;
int bpp_offset;
int first;
int last;
switch (ds_get_bits_per_pixel(vc->disp))
{
case 0:
return;
case 8:
fntable = pl110_draw_fn_8;
dest_width = 1;
break;
case 15:
fntable = pl110_draw_fn_15;
dest_width = 2;
break;
case 16:
fntable = pl110_draw_fn_16;
dest_width = 2;
break;
case 24:
fntable = pl110_draw_fn_24;
dest_width = 3;
break;
case 32:
fntable = pl110_draw_fn_32;
dest_width = 4;
break;
default:
fprintf(stderr, "bcm2708: Bad color depth\n");
exit(1);
}
bpp_offset = 0;
fn = fntable[vc->fb_bpp + bpp_offset];
src_width = vc->fb.xres;
switch (vc->fb_bpp) {
case BPP_1:
src_width >>= 3;
break;
case BPP_2:
src_width >>= 2;
break;
case BPP_4:
src_width >>= 1;
break;
case BPP_8:
break;
case BPP_16:
case BPP_16_565:
case BPP_12:
src_width <<= 1;
break;
case BPP_32:
src_width <<= 2;
break;
}
dest_width *= vc->fb.xres;
first = 0;
framebuffer_update_display(vc->disp, get_system_memory(),
vc->fb.base, vc->fb.xres, vc->fb.yres,
src_width, dest_width, 0,
vc->fb_invalidate,
fn, NULL,
&first, &last);
if (first >= 0) {
dpy_update(vc->disp, 0, first, vc->fb.xres, last - first + 1);
}
vc->fb_invalidate = 0;
}
static void pxa2xx_update_display(void *opaque)
{
PXA2xxLCDState *s = (PXA2xxLCDState *) opaque;
target_phys_addr_t fbptr;
int miny, maxy;
int ch;
if (!(s->control[0] & LCCR0_ENB))
return;
pxa2xx_descriptor_load(s);
pxa2xx_lcdc_resize(s);
miny = s->yres;
maxy = 0;
s->transp = s->dma_ch[2].up || s->dma_ch[3].up;
/* Note: With overlay planes the order depends on LCCR0 bit 25. */
for (ch = 0; ch < PXA_LCDDMA_CHANS; ch ++)
if (s->dma_ch[ch].up) {
if (!s->dma_ch[ch].source) {
pxa2xx_dma_ber_set(s, ch);
continue;
}
fbptr = s->dma_ch[ch].source;
if (!(fbptr >= PXA2XX_SDRAM_BASE &&
fbptr <= PXA2XX_SDRAM_BASE + ram_size)) {
pxa2xx_dma_ber_set(s, ch);
continue;
}
if (s->dma_ch[ch].command & LDCMD_PAL) {
cpu_physical_memory_read(fbptr, s->dma_ch[ch].pbuffer,
MAX(LDCMD_LENGTH(s->dma_ch[ch].command),
sizeof(s->dma_ch[ch].pbuffer)));
pxa2xx_palette_parse(s, ch, s->bpp);
} else {
/* Do we need to reparse palette */
if (LCCR4_PALFOR(s->control[4]) != s->pal_for)
pxa2xx_palette_parse(s, ch, s->bpp);
/* ACK frame start */
pxa2xx_dma_sof_set(s, ch);
s->dma_ch[ch].redraw(s, fbptr, &miny, &maxy);
s->invalidated = 0;
/* ACK frame completed */
pxa2xx_dma_eof_set(s, ch);
}
}
if (s->control[0] & LCCR0_DIS) {
/* ACK last frame completed */
s->control[0] &= ~LCCR0_ENB;
s->status[0] |= LCSR0_LDD;
}
if (miny >= 0) {
switch (s->orientation) {
case 0:
dpy_update(s->ds, 0, miny, s->xres, maxy - miny + 1);
break;
case 90:
dpy_update(s->ds, miny, 0, maxy - miny + 1, s->xres);
break;
case 180:
maxy = s->yres - maxy - 1;
miny = s->yres - miny - 1;
dpy_update(s->ds, 0, maxy, s->xres, miny - maxy + 1);
break;
case 270:
maxy = s->yres - maxy - 1;
miny = s->yres - miny - 1;
dpy_update(s->ds, maxy, 0, miny - maxy + 1, s->xres);
break;
}
}
pxa2xx_lcdc_int_update(s);
qemu_irq_raise(s->vsync_cb);
}
void qxl_render_update(PCIQXLDevice *qxl)
{
VGACommonState *vga = &qxl->vga;
QXLRect dirty[32], update;
void *ptr;
int i;
if (qxl->guest_primary.resized) {
qxl->guest_primary.resized = 0;
if (qxl->guest_primary.flipped) {
qemu_free(qxl->guest_primary.flipped);
qxl->guest_primary.flipped = NULL;
}
qemu_free_displaysurface(vga->ds);
qxl->guest_primary.data = qemu_get_ram_ptr(qxl->vga.vram_offset);
if (qxl->guest_primary.stride < 0) {
/* spice surface is upside down -> need extra buffer to flip */
qxl->guest_primary.stride = -qxl->guest_primary.stride;
qxl->guest_primary.flipped = qemu_malloc(qxl->guest_primary.surface.width *
qxl->guest_primary.stride);
ptr = qxl->guest_primary.flipped;
} else {
ptr = qxl->guest_primary.data;
}
dprint(qxl, 1, "%s: %dx%d, stride %d, bpp %d, depth %d, flip %s\n",
__FUNCTION__,
qxl->guest_primary.surface.width,
qxl->guest_primary.surface.height,
qxl->guest_primary.stride,
qxl->guest_primary.bytes_pp,
qxl->guest_primary.bits_pp,
qxl->guest_primary.flipped ? "yes" : "no");
vga->ds->surface =
qemu_create_displaysurface_from(qxl->guest_primary.surface.width,
qxl->guest_primary.surface.height,
qxl->guest_primary.bits_pp,
qxl->guest_primary.stride,
ptr);
dpy_resize(vga->ds);
}
if (!qxl->guest_primary.commands) {
return;
}
qxl->guest_primary.commands = 0;
update.left = 0;
update.right = qxl->guest_primary.surface.width;
update.top = 0;
update.bottom = qxl->guest_primary.surface.height;
memset(dirty, 0, sizeof(dirty));
qxl->ssd.worker->update_area(qxl->ssd.worker, 0, &update,
dirty, ARRAY_SIZE(dirty), 1);
for (i = 0; i < ARRAY_SIZE(dirty); i++) {
if (qemu_spice_rect_is_empty(dirty+i)) {
break;
}
if (qxl->guest_primary.flipped) {
qxl_flip(qxl, dirty+i);
}
dpy_update(vga->ds,
dirty[i].left, dirty[i].top,
dirty[i].right - dirty[i].left,
dirty[i].bottom - dirty[i].top);
}
}
void qxl_render_update(PCIQXLDevice *qxl)
{
VGACommonState *vga = &qxl->vga;
QXLRect dirty[32], update;
void *ptr;
int i, redraw = 0;
if (!is_buffer_shared(vga->ds->surface)) {
dprint(qxl, 1, "%s: restoring shared displaysurface\n", __func__);
qxl->guest_primary.resized++;
qxl->guest_primary.commands++;
redraw = 1;
}
if (qxl->guest_primary.resized) {
qxl->guest_primary.resized = 0;
if (qxl->guest_primary.flipped) {
g_free(qxl->guest_primary.flipped);
qxl->guest_primary.flipped = NULL;
}
qemu_free_displaysurface(vga->ds);
qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
if (qxl->guest_primary.qxl_stride < 0) {
/* spice surface is upside down -> need extra buffer to flip */
qxl->guest_primary.flipped =
g_malloc(qxl->guest_primary.surface.width *
qxl->guest_primary.abs_stride);
ptr = qxl->guest_primary.flipped;
} else {
ptr = qxl->guest_primary.data;
}
dprint(qxl, 1, "%s: %dx%d, stride %d, bpp %d, depth %d, flip %s\n",
__FUNCTION__,
qxl->guest_primary.surface.width,
qxl->guest_primary.surface.height,
qxl->guest_primary.qxl_stride,
qxl->guest_primary.bytes_pp,
qxl->guest_primary.bits_pp,
qxl->guest_primary.flipped ? "yes" : "no");
vga->ds->surface =
qemu_create_displaysurface_from(qxl->guest_primary.surface.width,
qxl->guest_primary.surface.height,
qxl->guest_primary.bits_pp,
qxl->guest_primary.abs_stride,
ptr);
dpy_resize(vga->ds);
}
if (!qxl->guest_primary.commands) {
return;
}
qxl->guest_primary.commands = 0;
update.left = 0;
update.right = qxl->guest_primary.surface.width;
update.top = 0;
update.bottom = qxl->guest_primary.surface.height;
memset(dirty, 0, sizeof(dirty));
qxl_spice_update_area(qxl, 0, &update,
dirty, ARRAY_SIZE(dirty), 1, QXL_SYNC);
if (redraw) {
memset(dirty, 0, sizeof(dirty));
dirty[0] = update;
}
for (i = 0; i < ARRAY_SIZE(dirty); i++) {
if (qemu_spice_rect_is_empty(dirty+i)) {
break;
}
if (qxl->guest_primary.flipped) {
qxl_flip(qxl, dirty+i);
}
dpy_update(vga->ds,
dirty[i].left, dirty[i].top,
dirty[i].right - dirty[i].left,
dirty[i].bottom - dirty[i].top);
}
}
