mirror of
https://github.com/xemu-project/xemu.git
synced 2024-12-18 01:08:51 +00:00
97edf3bd5e
This adds opengl rendering support to the gtk ui, using egl. It's off by default for now, use 'qemu -display gtk,gl=on' to play with this. Note that gtk got native opengl support with release 3.16. There most likely will be a separate implementation for 3.16+, using the native gtk opengl support. This patch covers older versions (and for the time being 3.16 too, hopefully without rendering quirks). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
142 lines
3.5 KiB
C
142 lines
3.5 KiB
C
/*
|
|
* 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-common.h"
|
|
|
|
#include "trace.h"
|
|
|
|
#include "ui/console.h"
|
|
#include "ui/gtk.h"
|
|
#include "ui/egl-helpers.h"
|
|
|
|
#include "sysemu/sysemu.h"
|
|
|
|
/** 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;
|
|
}
|
|
|
|
#if GTK_CHECK_VERSION(3, 0, 0)
|
|
Window x11_window = gdk_x11_window_get_xid(gdk_window);
|
|
#else
|
|
Window x11_window = gdk_x11_drawable_get_xid(gdk_window);
|
|
#endif
|
|
if (!x11_window) {
|
|
return;
|
|
}
|
|
|
|
vc->gfx.ectx = qemu_egl_init_ctx();
|
|
vc->gfx.esurface = qemu_egl_init_surface_x11(vc->gfx.ectx, x11_window);
|
|
|
|
assert(vc->gfx.esurface);
|
|
}
|
|
|
|
void gd_egl_draw(VirtualConsole *vc)
|
|
{
|
|
GdkWindow *window;
|
|
int ww, wh;
|
|
|
|
if (!vc->gfx.gls || !vc->gfx.ds) {
|
|
return;
|
|
}
|
|
|
|
eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
|
|
vc->gfx.esurface, vc->gfx.ectx);
|
|
|
|
window = gtk_widget_get_window(vc->gfx.drawing_area);
|
|
gdk_drawable_get_size(window, &ww, &wh);
|
|
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);
|
|
}
|
|
|
|
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);
|
|
|
|
if (!vc->gfx.esurface) {
|
|
gd_egl_init(vc);
|
|
if (!vc->gfx.esurface) {
|
|
return;
|
|
}
|
|
vc->gfx.gls = console_gl_init_context();
|
|
if (vc->gfx.ds) {
|
|
surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
|
|
}
|
|
}
|
|
|
|
graphic_hw_update(dcl->con);
|
|
|
|
if (vc->gfx.glupdates) {
|
|
vc->gfx.glupdates = 0;
|
|
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;
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
void gtk_egl_init(void)
|
|
{
|
|
GdkDisplay *gdk_display = gdk_display_get_default();
|
|
Display *x11_display = gdk_x11_display_get_xdisplay(gdk_display);
|
|
|
|
if (qemu_egl_init_dpy(x11_display, false, false) < 0) {
|
|
return;
|
|
}
|
|
|
|
display_opengl = 1;
|
|
}
|