@@ -1675,11 +1675,26 @@ void dpy_gfx_update_full(QemuConsole *con)
void dpy_gfx_replace_surface(QemuConsole *con,
DisplaySurface *surface)
{
+ static const char placeholder_msg[] = "Display output is not active.";
DisplayState *s = con->ds;
DisplaySurface *old_surface = con->surface;
DisplayChangeListener *dcl;
+ int width;
+ int height;
+
+ if (!surface) {
+ if (old_surface) {
+ width = surface_width(old_surface);
+ height = surface_height(old_surface);
+ } else {
+ width = 640;
+ height = 480;
+ }
+
+ surface = qemu_create_placeholder_surface(width, height, placeholder_msg);
+ }
- assert(old_surface != surface || surface == NULL);
+ assert(old_surface != surface);
con->surface = surface;
QLIST_FOREACH(dcl, &s->listeners, next) {
@@ -567,10 +567,6 @@ static void gd_switch(DisplayChangeListener *dcl,
}
vc->gfx.ds = surface;
- if (!surface) {
- return;
- }
-
if (surface->format == PIXMAN_x8r8g8b8) {
/*
* PIXMAN_x8r8g8b8 == CAIRO_FORMAT_RGB24
@@ -32,14 +32,11 @@ void sdl2_2d_update(DisplayChangeListener *dcl,
int x, int y, int w, int h)
{
struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
- DisplaySurface *surf = qemu_console_surface(dcl->con);
+ DisplaySurface *surf = scon->surface;
SDL_Rect rect;
size_t surface_data_offset;
assert(!scon->opengl);
- if (!surf) {
- return;
- }
if (!scon->texture) {
return;
}
@@ -75,7 +72,7 @@ void sdl2_2d_switch(DisplayChangeListener *dcl,
scon->texture = NULL;
}
- if (!new_surface) {
+ if (is_placeholder(new_surface) && qemu_console_get_index(dcl->con)) {
sdl2_window_destroy(scon);
return;
}
@@ -86,7 +86,7 @@ void sdl2_gl_switch(DisplayChangeListener *dcl,
scon->surface = new_surface;
- if (!new_surface) {
+ if (is_placeholder(new_surface) && qemu_console_get_index(dcl->con)) {
qemu_gl_fini_shader(scon->gls);
scon->gls = NULL;
sdl2_window_destroy(scon);
@@ -112,7 +112,7 @@ void sdl2_gl_refresh(DisplayChangeListener *dcl)
assert(scon->opengl);
graphic_hw_update(dcl->con);
- if (scon->updates && scon->surface) {
+ if (scon->updates && scon->real_window) {
scon->updates = 0;
sdl2_gl_render_surface(scon);
}
@@ -388,7 +388,7 @@ void qemu_spice_display_switch(SimpleSpiceDisplay *ssd,
SimpleSpiceUpdate *update;
bool need_destroy;
- if (surface && ssd->surface &&
+ if (ssd->surface &&
surface_width(surface) == pixman_image_get_width(ssd->surface) &&
surface_height(surface) == pixman_image_get_height(ssd->surface) &&
surface_format(surface) == pixman_image_get_format(ssd->surface)) {
@@ -410,8 +410,8 @@ void qemu_spice_display_switch(SimpleSpiceDisplay *ssd,
/* full mode switch */
trace_qemu_spice_display_surface(ssd->qxl.id,
- surface ? surface_width(surface) : 0,
- surface ? surface_height(surface) : 0,
+ surface_width(surface),
+ surface_height(surface),
false);
memset(&ssd->dirty, 0, sizeof(ssd->dirty));
@@ -790,20 +790,10 @@ static bool vnc_check_pageflip(DisplaySurface *s1,
static void vnc_dpy_switch(DisplayChangeListener *dcl,
DisplaySurface *surface)
{
- static const char placeholder_msg[] =
- "Display output is not active.";
- static DisplaySurface *placeholder;
VncDisplay *vd = container_of(dcl, VncDisplay, dcl);
bool pageflip = vnc_check_pageflip(vd->ds, surface);
VncState *vs;
- if (surface == NULL) {
- if (placeholder == NULL) {
- placeholder = qemu_create_placeholder_surface(640, 480, placeholder_msg);
- }
- surface = placeholder;
- }
-
vnc_abort_display_jobs(vd);
vd->ds = surface;
ui/console used to accept NULL as graphic console surface, but its semantics was inconsistent among displays: - cocoa and gtk-egl perform NULL dereference. - egl-headless, spice and spice-egl do nothing. - gtk releases underlying resources. - sdl2-2d and sdl2-gl destroys the window. - vnc shows a message, "Display output is not active." Fortunately, only virtio-gpu and virtio-gpu-3d assign NULL so we can study them to figure out the desired behavior. They assign NULL *except* for the primary display when the device is realized, reset, or its scanout is disabled. This effectively destroys windows for the (uninitialized) secondary displays. To implement the consistent behavior of display device realization/reset, this change embeds it to the operation switching the surface. When NULL was given as a new surface when switching, ui/console will instead passes a placeholder down to each display listeners. sdl destroys the window for a secondary console if its surface is a placeholder. The other displays simply shows the placeholder. Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com> --- ui/console.c | 17 ++++++++++++++++- ui/gtk.c | 4 ---- ui/sdl2-2d.c | 7 ++----- ui/sdl2-gl.c | 4 ++-- ui/spice-display.c | 6 +++--- ui/vnc.c | 10 ---------- 6 files changed, 23 insertions(+), 25 deletions(-)