qemu/hw/qxl-render.c
Gerd Hoffmann 0ec8df3974 qxl: always update displaysurface on resize
Don't try to be clever and skip displaysurface reinitialization in case
the size hasn't changed.  Other parameters might have changed
nevertheless, for example depth or stride, resulting in rendering being
broken then.

Trigger: boot linux guest with vesafb, start X11, make sure both vesafb
and X11 use the display same resolution.  Then watch X11 screen being
upside down.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-10-08 07:37:10 +02:00

278 lines
8.9 KiB
C

/*
* qxl local rendering (aka display on sdl/vnc)
*
* Copyright (C) 2010 Red Hat, Inc.
*
* maintained by Gerd Hoffmann <kraxel@redhat.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 or
* (at your option) version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qxl.h"
static void qxl_blit(PCIQXLDevice *qxl, QXLRect *rect)
{
uint8_t *src;
uint8_t *dst = qxl->vga.ds->surface->data;
int len, i;
if (is_buffer_shared(qxl->vga.ds->surface)) {
return;
}
if (!qxl->guest_primary.data) {
trace_qxl_render_blit_guest_primary_initialized();
qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
}
trace_qxl_render_blit(qxl->guest_primary.qxl_stride,
rect->left, rect->right, rect->top, rect->bottom);
src = qxl->guest_primary.data;
if (qxl->guest_primary.qxl_stride < 0) {
/* qxl surface is upside down, walk src scanlines
* in reverse order to flip it */
src += (qxl->guest_primary.surface.height - rect->top - 1) *
qxl->guest_primary.abs_stride;
} else {
src += rect->top * qxl->guest_primary.abs_stride;
}
dst += rect->top * qxl->guest_primary.abs_stride;
src += rect->left * qxl->guest_primary.bytes_pp;
dst += rect->left * qxl->guest_primary.bytes_pp;
len = (rect->right - rect->left) * qxl->guest_primary.bytes_pp;
for (i = rect->top; i < rect->bottom; i++) {
memcpy(dst, src, len);
dst += qxl->guest_primary.abs_stride;
src += qxl->guest_primary.qxl_stride;
}
}
void qxl_render_resize(PCIQXLDevice *qxl)
{
QXLSurfaceCreate *sc = &qxl->guest_primary.surface;
qxl->guest_primary.qxl_stride = sc->stride;
qxl->guest_primary.abs_stride = abs(sc->stride);
qxl->guest_primary.resized++;
switch (sc->format) {
case SPICE_SURFACE_FMT_16_555:
qxl->guest_primary.bytes_pp = 2;
qxl->guest_primary.bits_pp = 15;
break;
case SPICE_SURFACE_FMT_16_565:
qxl->guest_primary.bytes_pp = 2;
qxl->guest_primary.bits_pp = 16;
break;
case SPICE_SURFACE_FMT_32_xRGB:
case SPICE_SURFACE_FMT_32_ARGB:
qxl->guest_primary.bytes_pp = 4;
qxl->guest_primary.bits_pp = 32;
break;
default:
fprintf(stderr, "%s: unhandled format: %x\n", __FUNCTION__,
qxl->guest_primary.surface.format);
qxl->guest_primary.bytes_pp = 4;
qxl->guest_primary.bits_pp = 32;
break;
}
}
static void qxl_set_rect_to_surface(PCIQXLDevice *qxl, QXLRect *area)
{
area->left = 0;
area->right = qxl->guest_primary.surface.width;
area->top = 0;
area->bottom = qxl->guest_primary.surface.height;
}
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 = memory_region_get_ram_ptr(&qxl->vga.vram);
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);
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);
}
for (i = 0; i < qxl->num_dirty_rects; i++) {
if (qemu_spice_rect_is_empty(qxl->dirty+i)) {
break;
}
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;
}
/*
* use ssd.lock to protect render_update_cookie_num.
* qxl_render_update is called by io thread or vcpu thread, and the completion
* callbacks are called by spice_server thread, defering to bh called from the
* io thread.
*/
void qxl_render_update(PCIQXLDevice *qxl)
{
QXLCookie *cookie;
qemu_mutex_lock(&qxl->ssd.lock);
if (!runstate_is_running() || !qxl->guest_primary.commands) {
qxl_render_update_area_unlocked(qxl);
qemu_mutex_unlock(&qxl->ssd.lock);
return;
}
qxl->guest_primary.commands = 0;
qxl->render_update_cookie_num++;
qemu_mutex_unlock(&qxl->ssd.lock);
cookie = qxl_cookie_new(QXL_COOKIE_TYPE_RENDER_UPDATE_AREA,
0);
qxl_set_rect_to_surface(qxl, &cookie->u.render.area);
qxl_spice_update_area(qxl, 0, &cookie->u.render.area, NULL,
0, 1 /* clear_dirty_region */, QXL_ASYNC, cookie);
}
void qxl_render_update_area_bh(void *opaque)
{
PCIQXLDevice *qxl = opaque;
qemu_mutex_lock(&qxl->ssd.lock);
qxl_render_update_area_unlocked(qxl);
qemu_mutex_unlock(&qxl->ssd.lock);
}
void qxl_render_update_area_done(PCIQXLDevice *qxl, QXLCookie *cookie)
{
qemu_mutex_lock(&qxl->ssd.lock);
trace_qxl_render_update_area_done(cookie);
qemu_bh_schedule(qxl->update_area_bh);
qxl->render_update_cookie_num--;
qemu_mutex_unlock(&qxl->ssd.lock);
g_free(cookie);
}
static QEMUCursor *qxl_cursor(PCIQXLDevice *qxl, QXLCursor *cursor)
{
QEMUCursor *c;
uint8_t *image, *mask;
size_t size;
c = cursor_alloc(cursor->header.width, cursor->header.height);
c->hot_x = cursor->header.hot_spot_x;
c->hot_y = cursor->header.hot_spot_y;
switch (cursor->header.type) {
case SPICE_CURSOR_TYPE_ALPHA:
size = cursor->header.width * cursor->header.height * sizeof(uint32_t);
memcpy(c->data, cursor->chunk.data, size);
if (qxl->debug > 2) {
cursor_print_ascii_art(c, "qxl/alpha");
}
break;
case SPICE_CURSOR_TYPE_MONO:
mask = cursor->chunk.data;
image = mask + cursor_get_mono_bpl(c) * c->width;
cursor_set_mono(c, 0xffffff, 0x000000, image, 1, mask);
if (qxl->debug > 2) {
cursor_print_ascii_art(c, "qxl/mono");
}
break;
default:
fprintf(stderr, "%s: not implemented: type %d\n",
__FUNCTION__, cursor->header.type);
goto fail;
}
return c;
fail:
cursor_put(c);
return NULL;
}
/* called from spice server thread context only */
int qxl_render_cursor(PCIQXLDevice *qxl, QXLCommandExt *ext)
{
QXLCursorCmd *cmd = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id);
QXLCursor *cursor;
QEMUCursor *c;
if (!cmd) {
return 1;
}
if (!qxl->ssd.ds->mouse_set || !qxl->ssd.ds->cursor_define) {
return 0;
}
if (qxl->debug > 1 && cmd->type != QXL_CURSOR_MOVE) {
fprintf(stderr, "%s", __FUNCTION__);
qxl_log_cmd_cursor(qxl, cmd, ext->group_id);
fprintf(stderr, "\n");
}
switch (cmd->type) {
case QXL_CURSOR_SET:
cursor = qxl_phys2virt(qxl, cmd->u.set.shape, ext->group_id);
if (!cursor) {
return 1;
}
if (cursor->chunk.data_size != cursor->data_size) {
fprintf(stderr, "%s: multiple chunks\n", __FUNCTION__);
return 1;
}
c = qxl_cursor(qxl, cursor);
if (c == NULL) {
c = cursor_builtin_left_ptr();
}
qemu_mutex_lock(&qxl->ssd.lock);
if (qxl->ssd.cursor) {
cursor_put(qxl->ssd.cursor);
}
qxl->ssd.cursor = c;
qxl->ssd.mouse_x = cmd->u.set.position.x;
qxl->ssd.mouse_y = cmd->u.set.position.y;
qemu_mutex_unlock(&qxl->ssd.lock);
break;
case QXL_CURSOR_MOVE:
qemu_mutex_lock(&qxl->ssd.lock);
qxl->ssd.mouse_x = cmd->u.position.x;
qxl->ssd.mouse_y = cmd->u.position.y;
qemu_mutex_unlock(&qxl->ssd.lock);
break;
}
return 0;
}