[qemu.git] / ui / gtk-egl.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/osdep.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;
    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) {
        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;
    } 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);
    }
}

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 = qemu_gl_init_shader();
        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;
        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;
    }

    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(DisplayChangeListener *dcl,
                                    QEMUGLParams *params)
{
    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);

    eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
                   vc->gfx.esurface, vc->gfx.ectx);
    return qemu_egl_create_context(dcl, 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_OPENGL_DMABUF
    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);
#endif
}

void gd_egl_cursor_dmabuf(DisplayChangeListener *dcl,
                          QemuDmaBuf *dmabuf, bool have_hot,
                          uint32_t hot_x, uint32_t hot_y)
{
#ifdef CONFIG_OPENGL_DMABUF
    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_release_dmabuf(DisplayChangeListener *dcl,
                           QemuDmaBuf *dmabuf)
{
#ifdef CONFIG_OPENGL_DMABUF
    egl_dmabuf_release_texture(dmabuf);
#endif
}

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);
    }

    eglSwapBuffers(qemu_egl_display, vc->gfx.esurface);
}

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(DisplayChangeListener *dcl,
                        QEMUGLContext ctx)
{
    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);

    return eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
                          vc->gfx.esurface, ctx);
}
Commit	Line	Data
97edf3bd GH	1	/*
	2	* GTK UI -- egl opengl code.
	3	*
	4	* Note that gtk 3.16+ (released 2015-03-23) has a GtkGLArea widget,
	5	* which is GtkDrawingArea like widget with opengl rendering support.
	6	*
	7	* This code handles opengl support on older gtk versions, using egl
	8	* to get a opengl context for the X11 window.
	9	*
	10	* This work is licensed under the terms of the GNU GPL, version 2 or later.
	11	* See the COPYING file in the top-level directory.
	12	*/
	13
e16f4c87	14	#include "qemu/osdep.h"
97edf3bd GH	15
	16	#include "trace.h"
	17
	18	#include "ui/console.h"
	19	#include "ui/gtk.h"
	20	#include "ui/egl-helpers.h"
f1bd3132	21	#include "ui/shader.h"
97edf3bd GH	22
	23	#include "sysemu/sysemu.h"
	24
4782aeb7 GH	25	static void gtk_egl_set_scanout_mode(VirtualConsole *vc, bool scanout)
	26	{
	27	if (vc->gfx.scanout_mode == scanout) {
	28	return;
	29	}
	30
	31	vc->gfx.scanout_mode = scanout;
	32	if (!vc->gfx.scanout_mode) {
a4f113fd	33	egl_fb_destroy(&vc->gfx.guest_fb);
4782aeb7 GH	34	if (vc->gfx.surface) {
	35	surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
	36	surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
	37	}
	38	}
	39	}
	40
97edf3bd GH	41	/ DisplayState Callbacks (opengl version) /
	42
	43	void gd_egl_init(VirtualConsole *vc)
	44	{
	45	GdkWindow *gdk_window = gtk_widget_get_window(vc->gfx.drawing_area);
	46	if (!gdk_window) {
	47	return;
	48	}
	49
97edf3bd	50	Window x11_window = gdk_x11_window_get_xid(gdk_window);
97edf3bd GH	51	if (!x11_window) {
	52	return;
	53	}
	54
	55	vc->gfx.ectx = qemu_egl_init_ctx();
fbd57c75 AK	56	vc->gfx.esurface = qemu_egl_init_surface_x11
fbd57c75 AK	57	(vc->gfx.ectx, (EGLNativeWindowType)x11_window);
97edf3bd GH	58
	59	assert(vc->gfx.esurface);
	60	}
	61
	62	void gd_egl_draw(VirtualConsole *vc)
	63	{
	64	GdkWindow *window;
	65	int ww, wh;
	66
4782aeb7	67	if (!vc->gfx.gls) {
97edf3bd GH	68	return;
	69	}
	70
f1aba960 GH	71	window = gtk_widget_get_window(vc->gfx.drawing_area);
	72	ww = gdk_window_get_width(window);
	73	wh = gdk_window_get_height(window);
	74
4782aeb7 GH	75	if (vc->gfx.scanout_mode) {
4782aeb7 GH	76	gd_egl_scanout_flush(&vc->gfx.dcl, 0, 0, vc->gfx.w, vc->gfx.h);
f1aba960 GH	77
	78	vc->gfx.scale_x = (double)ww / vc->gfx.w;
	79	vc->gfx.scale_y = (double)wh / vc->gfx.h;
4782aeb7 GH	80	} else {
	81	if (!vc->gfx.ds) {
	82	return;
	83	}
	84	eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
	85	vc->gfx.esurface, vc->gfx.ectx);
97edf3bd	86
4782aeb7 GH	87	surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, ww, wh);
4782aeb7 GH	88	surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds);
97edf3bd	89
4782aeb7	90	eglSwapBuffers(qemu_egl_display, vc->gfx.esurface);
f1aba960 GH	91
	92	vc->gfx.scale_x = (double)ww / surface_width(vc->gfx.ds);
	93	vc->gfx.scale_y = (double)wh / surface_height(vc->gfx.ds);
4782aeb7	94	}
97edf3bd GH	95	}
	96
	97	void gd_egl_update(DisplayChangeListener *dcl,
	98	int x, int y, int w, int h)
	99	{
	100	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	101
	102	if (!vc->gfx.gls \|\| !vc->gfx.ds) {
	103	return;
	104	}
	105
	106	eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
	107	vc->gfx.esurface, vc->gfx.ectx);
	108	surface_gl_update_texture(vc->gfx.gls, vc->gfx.ds, x, y, w, h);
	109	vc->gfx.glupdates++;
	110	}
	111
	112	void gd_egl_refresh(DisplayChangeListener *dcl)
	113	{
	114	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	115
	116	if (!vc->gfx.esurface) {
	117	gd_egl_init(vc);
	118	if (!vc->gfx.esurface) {
	119	return;
	120	}
46e19e14	121	vc->gfx.gls = qemu_gl_init_shader();
97edf3bd GH	122	if (vc->gfx.ds) {
	123	surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
	124	}
	125	}
	126
	127	graphic_hw_update(dcl->con);
	128
	129	if (vc->gfx.glupdates) {
	130	vc->gfx.glupdates = 0;
4782aeb7	131	gtk_egl_set_scanout_mode(vc, false);
97edf3bd GH	132	gd_egl_draw(vc);
	133	}
	134	}
	135
	136	void gd_egl_switch(DisplayChangeListener *dcl,
	137	DisplaySurface *surface)
	138	{
	139	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	140	bool resized = true;
	141
	142	trace_gd_switch(vc->label, surface_width(surface), surface_height(surface));
	143
	144	if (vc->gfx.ds &&
	145	surface_width(vc->gfx.ds) == surface_width(surface) &&
	146	surface_height(vc->gfx.ds) == surface_height(surface)) {
	147	resized = false;
	148	}
	149
	150	surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
	151	vc->gfx.ds = surface;
	152	if (vc->gfx.gls) {
	153	surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
	154	}
	155
	156	if (resized) {
	157	gd_update_windowsize(vc);
	158	}
	159	}
	160
4782aeb7 GH	161	QEMUGLContext gd_egl_create_context(DisplayChangeListener *dcl,
	162	QEMUGLParams *params)
	163	{
	164	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	165
	166	eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
	167	vc->gfx.esurface, vc->gfx.ectx);
	168	return qemu_egl_create_context(dcl, params);
	169	}
	170
543a7a16 GH	171	void gd_egl_scanout_disable(DisplayChangeListener *dcl)
	172	{
	173	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	174
	175	vc->gfx.w = 0;
	176	vc->gfx.h = 0;
543a7a16 GH	177	gtk_egl_set_scanout_mode(vc, false);
	178	}
	179
f4c36bda GH	180	void gd_egl_scanout_texture(DisplayChangeListener *dcl,
	181	uint32_t backing_id, bool backing_y_0_top,
	182	uint32_t backing_width, uint32_t backing_height,
	183	uint32_t x, uint32_t y,
	184	uint32_t w, uint32_t h)
4782aeb7 GH	185	{
	186	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	187
	188	vc->gfx.x = x;
	189	vc->gfx.y = y;
	190	vc->gfx.w = w;
	191	vc->gfx.h = h;
4782aeb7 GH	192	vc->gfx.y0_top = backing_y_0_top;
	193
	194	eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
	195	vc->gfx.esurface, vc->gfx.ectx);
	196
4782aeb7	197	gtk_egl_set_scanout_mode(vc, true);
74083f9c GH	198	egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height,
74083f9c GH	199	backing_id, false);
4782aeb7 GH	200	}
4782aeb7 GH	201
70763fea GH	202	void gd_egl_scanout_dmabuf(DisplayChangeListener *dcl,
	203	QemuDmaBuf *dmabuf)
	204	{
	205	#ifdef CONFIG_OPENGL_DMABUF
	206	egl_dmabuf_import_texture(dmabuf);
	207	if (!dmabuf->texture) {
	208	return;
	209	}
	210
	211	gd_egl_scanout_texture(dcl, dmabuf->texture,
	212	false, dmabuf->width, dmabuf->height,
	213	0, 0, dmabuf->width, dmabuf->height);
	214	#endif
	215	}
	216
f1bd3132 GH	217	void gd_egl_cursor_dmabuf(DisplayChangeListener *dcl,
	218	QemuDmaBuf *dmabuf, bool have_hot,
	219	uint32_t hot_x, uint32_t hot_y)
	220	{
	221	#ifdef CONFIG_OPENGL_DMABUF
	222	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	223
	224	if (dmabuf) {
	225	egl_dmabuf_import_texture(dmabuf);
	226	if (!dmabuf->texture) {
	227	return;
	228	}
	229	egl_fb_setup_for_tex(&vc->gfx.cursor_fb, dmabuf->width, dmabuf->height,
	230	dmabuf->texture, false);
	231	} else {
	232	egl_fb_destroy(&vc->gfx.cursor_fb);
	233	}
	234	#endif
	235	}
	236
	237	void gd_egl_cursor_position(DisplayChangeListener *dcl,
	238	uint32_t pos_x, uint32_t pos_y)
	239	{
	240	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	241
f1aba960 GH	242	vc->gfx.cursor_x = pos_x * vc->gfx.scale_x;
f1aba960 GH	243	vc->gfx.cursor_y = pos_y * vc->gfx.scale_y;
f1bd3132 GH	244	}
f1bd3132 GH	245
70763fea GH	246	void gd_egl_release_dmabuf(DisplayChangeListener *dcl,
	247	QemuDmaBuf *dmabuf)
	248	{
	249	#ifdef CONFIG_OPENGL_DMABUF
	250	egl_dmabuf_release_texture(dmabuf);
	251	#endif
	252	}
	253
4782aeb7 GH	254	void gd_egl_scanout_flush(DisplayChangeListener *dcl,
	255	uint32_t x, uint32_t y, uint32_t w, uint32_t h)
	256	{
	257	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	258	GdkWindow *window;
a4f113fd	259	int ww, wh;
4782aeb7 GH	260
	261	if (!vc->gfx.scanout_mode) {
	262	return;
	263	}
a4f113fd	264	if (!vc->gfx.guest_fb.framebuffer) {
4782aeb7 GH	265	return;
	266	}
	267
	268	eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
	269	vc->gfx.esurface, vc->gfx.ectx);
	270
4782aeb7	271	window = gtk_widget_get_window(vc->gfx.drawing_area);
89d85cde DB	272	ww = gdk_window_get_width(window);
89d85cde DB	273	wh = gdk_window_get_height(window);
a4f113fd	274	egl_fb_setup_default(&vc->gfx.win_fb, ww, wh);
f1bd3132 GH	275	if (vc->gfx.cursor_fb.texture) {
	276	egl_texture_blit(vc->gfx.gls, &vc->gfx.win_fb, &vc->gfx.guest_fb,
	277	vc->gfx.y0_top);
	278	egl_texture_blend(vc->gfx.gls, &vc->gfx.win_fb, &vc->gfx.cursor_fb,
	279	vc->gfx.y0_top,
051a0cde CZ	280	vc->gfx.cursor_x, vc->gfx.cursor_y,
051a0cde CZ	281	vc->gfx.scale_x, vc->gfx.scale_y);
f1bd3132 GH	282	} else {
	283	egl_fb_blit(&vc->gfx.win_fb, &vc->gfx.guest_fb, !vc->gfx.y0_top);
	284	}
4782aeb7 GH	285
	286	eglSwapBuffers(qemu_egl_display, vc->gfx.esurface);
	287	}
	288
54d208ff	289	void gtk_egl_init(DisplayGLMode mode)
97edf3bd GH	290	{
	291	GdkDisplay *gdk_display = gdk_display_get_default();
	292	Display *x11_display = gdk_x11_display_get_xdisplay(gdk_display);
	293
54d208ff	294	if (qemu_egl_init_dpy_x11(x11_display, mode) < 0) {
97edf3bd GH	295	return;
	296	}
	297
	298	display_opengl = 1;
	299	}
4782aeb7 GH	300
	301	int gd_egl_make_current(DisplayChangeListener *dcl,
	302	QEMUGLContext ctx)
	303	{
	304	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	305
	306	return eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
	307	vc->gfx.esurface, ctx);
	308	}