qemu/hw/qxl-render.c
Gerd Hoffmann b1424e0381 vga: fix byteswapping.
In case host and guest endianness differ the vga code first creates
a shared surface (using qemu_create_displaysurface_from), then goes
patch the surface format to indicate that the bytes must be swapped.

The switch to pixman broke that hack as the format patching isn't
propagated into the pixman image, so ui code using the pixman image
directly (such as vnc) uses the wrong format.

Fix that by adding a byteswap parameter to
qemu_create_displaysurface_from, so we'll use the correct format
when creating the surface (and the pixman image) and don't have
to patch the format afterwards.

[ v2: unbreak xen build ]

Cc: qemu-stable@nongnu.org
Cc: mark.cave-ayland@ilande.co.uk
Cc: agraf@suse.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1361349432-23884-1-git-send-email-kraxel@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-21 16:34:00 -06:00

280 lines
8.8 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 = ds_get_data(qxl->vga.ds);
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);
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,
false);
} else {
qemu_resize_displaysurface(vga->ds,
qxl->guest_primary.surface.width,
qxl->guest_primary.surface.height);
}
dpy_gfx_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_gfx_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 (!dpy_cursor_define_supported(qxl->ssd.ds)) {
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;
}