qemu-e2k/hw/display/qxl-render.c

332 lines
10 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 "qemu/osdep.h"
#include "qxl.h"
#include "sysemu/runstate.h"
#include "trace.h"
static void qxl_blit(PCIQXLDevice *qxl, QXLRect *rect)
{
DisplaySurface *surface = qemu_console_surface(qxl->vga.con);
uint8_t *dst = surface_data(surface);
uint8_t *src;
int len, i;
if (is_buffer_shared(surface)) {
return;
}
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", __func__,
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;
DisplaySurface *surface;
int width = qxl->guest_head0_width ?: qxl->guest_primary.surface.width;
int height = qxl->guest_head0_height ?: qxl->guest_primary.surface.height;
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(
width,
height,
qxl->guest_primary.qxl_stride,
qxl->guest_primary.bytes_pp,
qxl->guest_primary.bits_pp);
if (qxl->guest_primary.qxl_stride > 0) {
pixman_format_code_t format =
qemu_default_pixman_format(qxl->guest_primary.bits_pp, true);
surface = qemu_create_displaysurface_from
(width,
height,
format,
qxl->guest_primary.abs_stride,
qxl->guest_primary.data);
} else {
surface = qemu_create_displaysurface
(width,
height);
}
dpy_gfx_replace_surface(vga->con, surface);
}
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 > width ||
qxl->dirty[i].bottom > height) {
continue;
}
qxl_blit(qxl, qxl->dirty+i);
dpy_gfx_update(vga->con,
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, deferring 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->mode == QXL_MODE_UNDEFINED) {
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 void qxl_unpack_chunks(void *dest, size_t size, PCIQXLDevice *qxl,
QXLDataChunk *chunk, uint32_t group_id)
{
uint32_t max_chunks = 32;
size_t offset = 0;
size_t bytes;
for (;;) {
bytes = MIN(size - offset, chunk->data_size);
memcpy(dest + offset, chunk->data, bytes);
offset += bytes;
if (offset == size) {
return;
}
chunk = qxl_phys2virt(qxl, chunk->next_chunk, group_id);
if (!chunk) {
return;
}
max_chunks--;
if (max_chunks == 0) {
return;
}
}
}
static QEMUCursor *qxl_cursor(PCIQXLDevice *qxl, QXLCursor *cursor,
uint32_t group_id)
{
QEMUCursor *c;
uint8_t *and_mask, *xor_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_MONO:
/* Assume that the full cursor is available in a single chunk. */
size = 2 * cursor_get_mono_bpl(c) * c->height;
if (size != cursor->data_size) {
fprintf(stderr, "%s: bad monochrome cursor %ux%u with size %u\n",
__func__, c->width, c->height, cursor->data_size);
goto fail;
}
and_mask = cursor->chunk.data;
xor_mask = and_mask + cursor_get_mono_bpl(c) * c->height;
cursor_set_mono(c, 0xffffff, 0x000000, xor_mask, 1, and_mask);
if (qxl->debug > 2) {
cursor_print_ascii_art(c, "qxl/mono");
}
break;
case SPICE_CURSOR_TYPE_ALPHA:
size = sizeof(uint32_t) * cursor->header.width * cursor->header.height;
qxl_unpack_chunks(c->data, size, qxl, &cursor->chunk, group_id);
if (qxl->debug > 2) {
cursor_print_ascii_art(c, "qxl/alpha");
}
break;
default:
fprintf(stderr, "%s: not implemented: type %d\n",
__func__, 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->vga.con)) {
return 0;
}
if (qxl->debug > 1 && cmd->type != QXL_CURSOR_MOVE) {
fprintf(stderr, "%s", __func__);
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;
}
c = qxl_cursor(qxl, cursor, ext->group_id);
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);
qemu_bh_schedule(qxl->ssd.cursor_bh);
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);
qemu_bh_schedule(qxl->ssd.cursor_bh);
break;
}
return 0;
}