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Akihiko Odaki authoredThis change adds a new member, refresh_rate to QemuUIInfo in include/ui/console.h. It represents the refresh rate of the physical display backend, and it is more appropriate than GUI update interval as the refresh rate which the emulated device reports: - sdl may set GUI update interval shorter than the refresh rate of the physical display to respond to user-generated events. - sdl and vnc aggressively changes GUI update interval, but a guests is typically not designed to respond to frequent refresh rate changes, or frequent "display mode" changes in general. The frequency of refresh rate changes of the physical display backend matches better to the guest's expectation. QemuUIInfo also has other members representing "display mode", which makes it suitable for refresh rate representation. It has a throttling of update notifications, and prevents frequent changes of the display mode. Signed-off-by:
Akihiko Odaki <akihiko.odaki@gmail.com>
Message-Id: <20220226115516.59830-3-akihiko.odaki@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>Akihiko Odaki authoredThis change adds a new member, refresh_rate to QemuUIInfo in include/ui/console.h. It represents the refresh rate of the physical display backend, and it is more appropriate than GUI update interval as the refresh rate which the emulated device reports: - sdl may set GUI update interval shorter than the refresh rate of the physical display to respond to user-generated events. - sdl and vnc aggressively changes GUI update interval, but a guests is typically not designed to respond to frequent refresh rate changes, or frequent "display mode" changes in general. The frequency of refresh rate changes of the physical display backend matches better to the guest's expectation. QemuUIInfo also has other members representing "display mode", which makes it suitable for refresh rate representation. It has a throttling of update notifications, and prevents frequent changes of the display mode. Signed-off-by:
Akihiko Odaki <akihiko.odaki@gmail.com>
Message-Id: <20220226115516.59830-3-akihiko.odaki@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
gtk-egl.c 10.32 KiB
/*
* GTK UI -- egl opengl code.
*
* Note that gtk 3.16+ (released 2015-03-23) has a GtkGLArea widget,
* which is GtkDrawingArea like widget with opengl rendering support.
*
* This code handles opengl support on older gtk versions, using egl
* to get a opengl context for the X11 window.
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qemu/main-loop.h"
#include "trace.h"
#include "ui/console.h"
#include "ui/gtk.h"
#include "ui/egl-helpers.h"
#include "ui/shader.h"
#include "sysemu/sysemu.h"
static void gtk_egl_set_scanout_mode(VirtualConsole *vc, bool scanout)
{
if (vc->gfx.scanout_mode == scanout) {
return;
}
vc->gfx.scanout_mode = scanout;
if (!vc->gfx.scanout_mode) {
egl_fb_destroy(&vc->gfx.guest_fb);
if (vc->gfx.surface) {
surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
}
}
}
/** DisplayState Callbacks (opengl version) **/
void gd_egl_init(VirtualConsole *vc)
{
GdkWindow *gdk_window = gtk_widget_get_window(vc->gfx.drawing_area);
if (!gdk_window) {
return;
}
Window x11_window = gdk_x11_window_get_xid(gdk_window);
if (!x11_window) {
return;
}
vc->gfx.ectx = qemu_egl_init_ctx();
vc->gfx.esurface = qemu_egl_init_surface_x11
(vc->gfx.ectx, (EGLNativeWindowType)x11_window);
assert(vc->gfx.esurface);
}
void gd_egl_draw(VirtualConsole *vc)
{
GdkWindow *window;
#ifdef CONFIG_GBM
QemuDmaBuf *dmabuf = vc->gfx.guest_fb.dmabuf;
#endif
int ww, wh;
if (!vc->gfx.gls) {
return;
}
window = gtk_widget_get_window(vc->gfx.drawing_area);
ww = gdk_window_get_width(window);
wh = gdk_window_get_height(window);
if (vc->gfx.scanout_mode) {
#ifdef CONFIG_GBM
if (dmabuf) {
if (!dmabuf->draw_submitted) {
return;
} else {
dmabuf->draw_submitted = false;
}
}
#endif
gd_egl_scanout_flush(&vc->gfx.dcl, 0, 0, vc->gfx.w, vc->gfx.h);
vc->gfx.scale_x = (double)ww / vc->gfx.w;
vc->gfx.scale_y = (double)wh / vc->gfx.h;
glFlush();
#ifdef CONFIG_GBM
if (dmabuf) {
egl_dmabuf_create_fence(dmabuf);
if (dmabuf->fence_fd > 0) {
qemu_set_fd_handler(dmabuf->fence_fd, gd_hw_gl_flushed, NULL, vc);
return;
}
graphic_hw_gl_block(vc->gfx.dcl.con, false);
}
#endif
} else {
if (!vc->gfx.ds) {
return;
}
eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
vc->gfx.esurface, vc->gfx.ectx);
surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, ww, wh);
surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds);
eglSwapBuffers(qemu_egl_display, vc->gfx.esurface);
vc->gfx.scale_x = (double)ww / surface_width(vc->gfx.ds);
vc->gfx.scale_y = (double)wh / surface_height(vc->gfx.ds);
glFlush();
}
}
void gd_egl_update(DisplayChangeListener *dcl,
int x, int y, int w, int h)
{
VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
if (!vc->gfx.gls || !vc->gfx.ds) {
return;
}
eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
vc->gfx.esurface, vc->gfx.ectx);
surface_gl_update_texture(vc->gfx.gls, vc->gfx.ds, x, y, w, h);
vc->gfx.glupdates++;
}
void gd_egl_refresh(DisplayChangeListener *dcl)
{ VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
gd_update_monitor_refresh_rate(
vc, vc->window ? vc->window : vc->gfx.drawing_area);
if (!vc->gfx.esurface) {
gd_egl_init(vc);
if (!vc->gfx.esurface) {
return;
}
vc->gfx.gls = qemu_gl_init_shader();
if (vc->gfx.ds) {
surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
}
#ifdef CONFIG_GBM
if (vc->gfx.guest_fb.dmabuf) {
egl_dmabuf_release_texture(vc->gfx.guest_fb.dmabuf);
gd_egl_scanout_dmabuf(dcl, vc->gfx.guest_fb.dmabuf);
}
#endif
}
graphic_hw_update(dcl->con);
if (vc->gfx.glupdates) {
vc->gfx.glupdates = 0;
gtk_egl_set_scanout_mode(vc, false);
gd_egl_draw(vc);
}
}
void gd_egl_switch(DisplayChangeListener *dcl,
DisplaySurface *surface)
{
VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
bool resized = true;
trace_gd_switch(vc->label, surface_width(surface), surface_height(surface));
if (vc->gfx.ds &&
surface_width(vc->gfx.ds) == surface_width(surface) &&
surface_height(vc->gfx.ds) == surface_height(surface)) {
resized = false;
}
eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
vc->gfx.esurface, vc->gfx.ectx);
surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
vc->gfx.ds = surface;
if (vc->gfx.gls) {
surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
}
if (resized) {
gd_update_windowsize(vc);
}
}
QEMUGLContext gd_egl_create_context(DisplayGLCtx *dgc,
QEMUGLParams *params)
{
VirtualConsole *vc = container_of(dgc, VirtualConsole, gfx.dgc);
eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
vc->gfx.esurface, vc->gfx.ectx);
return qemu_egl_create_context(dgc, params);
}
void gd_egl_scanout_disable(DisplayChangeListener *dcl){
VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
vc->gfx.w = 0;
vc->gfx.h = 0;
gtk_egl_set_scanout_mode(vc, false);
}
void gd_egl_scanout_texture(DisplayChangeListener *dcl,
uint32_t backing_id, bool backing_y_0_top,
uint32_t backing_width, uint32_t backing_height,
uint32_t x, uint32_t y,
uint32_t w, uint32_t h)
{
VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
vc->gfx.x = x;
vc->gfx.y = y;
vc->gfx.w = w;
vc->gfx.h = h;
vc->gfx.y0_top = backing_y_0_top;
eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
vc->gfx.esurface, vc->gfx.ectx);
gtk_egl_set_scanout_mode(vc, true);
egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height,
backing_id, false);
}
void gd_egl_scanout_dmabuf(DisplayChangeListener *dcl,
QemuDmaBuf *dmabuf)
{
#ifdef CONFIG_GBM
VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
vc->gfx.esurface, vc->gfx.ectx);
egl_dmabuf_import_texture(dmabuf);
if (!dmabuf->texture) {
return;
}
gd_egl_scanout_texture(dcl, dmabuf->texture,
false, dmabuf->width, dmabuf->height,
0, 0, dmabuf->width, dmabuf->height);
if (dmabuf->allow_fences) {
vc->gfx.guest_fb.dmabuf = dmabuf;
}
#endif
}
void gd_egl_cursor_dmabuf(DisplayChangeListener *dcl,
QemuDmaBuf *dmabuf, bool have_hot,
uint32_t hot_x, uint32_t hot_y)
{
#ifdef CONFIG_GBM
VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
if (dmabuf) {
egl_dmabuf_import_texture(dmabuf);
if (!dmabuf->texture) {
return;
}
egl_fb_setup_for_tex(&vc->gfx.cursor_fb, dmabuf->width, dmabuf->height,
dmabuf->texture, false);
} else {
egl_fb_destroy(&vc->gfx.cursor_fb); }
#endif
}
void gd_egl_cursor_position(DisplayChangeListener *dcl,
uint32_t pos_x, uint32_t pos_y)
{
VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
vc->gfx.cursor_x = pos_x * vc->gfx.scale_x;
vc->gfx.cursor_y = pos_y * vc->gfx.scale_y;
}
void gd_egl_scanout_flush(DisplayChangeListener *dcl,
uint32_t x, uint32_t y, uint32_t w, uint32_t h)
{
VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
GdkWindow *window;
int ww, wh;
if (!vc->gfx.scanout_mode) {
return;
}
if (!vc->gfx.guest_fb.framebuffer) {
return;
}
eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
vc->gfx.esurface, vc->gfx.ectx);
window = gtk_widget_get_window(vc->gfx.drawing_area);
ww = gdk_window_get_width(window);
wh = gdk_window_get_height(window);
egl_fb_setup_default(&vc->gfx.win_fb, ww, wh);
if (vc->gfx.cursor_fb.texture) {
egl_texture_blit(vc->gfx.gls, &vc->gfx.win_fb, &vc->gfx.guest_fb,
vc->gfx.y0_top);
egl_texture_blend(vc->gfx.gls, &vc->gfx.win_fb, &vc->gfx.cursor_fb,
vc->gfx.y0_top,
vc->gfx.cursor_x, vc->gfx.cursor_y,
vc->gfx.scale_x, vc->gfx.scale_y);
} else {
egl_fb_blit(&vc->gfx.win_fb, &vc->gfx.guest_fb, !vc->gfx.y0_top);
}
#ifdef CONFIG_GBM
if (vc->gfx.guest_fb.dmabuf) {
egl_dmabuf_create_sync(vc->gfx.guest_fb.dmabuf);
}
#endif
eglSwapBuffers(qemu_egl_display, vc->gfx.esurface);
}
void gd_egl_flush(DisplayChangeListener *dcl,
uint32_t x, uint32_t y, uint32_t w, uint32_t h)
{
VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
GtkWidget *area = vc->gfx.drawing_area;
if (vc->gfx.guest_fb.dmabuf) {
graphic_hw_gl_block(vc->gfx.dcl.con, true);
vc->gfx.guest_fb.dmabuf->draw_submitted = true;
gtk_widget_queue_draw_area(area, x, y, w, h);
return;
}
gd_egl_scanout_flush(&vc->gfx.dcl, x, y, w, h);
}
void gtk_egl_init(DisplayGLMode mode)
{
GdkDisplay *gdk_display = gdk_display_get_default();
Display *x11_display = gdk_x11_display_get_xdisplay(gdk_display);
if (qemu_egl_init_dpy_x11(x11_display, mode) < 0) {
return;
}
display_opengl = 1;
}
int gd_egl_make_current(DisplayGLCtx *dgc,
QEMUGLContext ctx)
{
VirtualConsole *vc = container_of(dgc, VirtualConsole, gfx.dgc);
return eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
vc->gfx.esurface, ctx);
}