[mirror_qemu.git] / ui / gtk-gl-area.c

/*
 * GTK UI -- glarea opengl code.
 *
 * Requires 3.16+ (GtkGLArea widget).
 *
 * 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 "sysemu/sysemu.h"

static void gtk_gl_area_set_scanout_mode(VirtualConsole *vc, bool scanout)
{
    if (vc->gfx.scanout_mode == scanout) {
        return;
    }

    vc->gfx.scanout_mode = scanout;
    if (!vc->gfx.scanout_mode) {
        gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
        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_gl_area_draw(VirtualConsole *vc)
{
#ifdef CONFIG_GBM
    QemuDmaBuf *dmabuf = vc->gfx.guest_fb.dmabuf;
#endif
    int ww, wh, ws, y1, y2;

    if (!vc->gfx.gls) {
        return;
    }

    gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
    ws = gdk_window_get_scale_factor(gtk_widget_get_window(vc->gfx.drawing_area));
    ww = gtk_widget_get_allocated_width(vc->gfx.drawing_area) * ws;
    wh = gtk_widget_get_allocated_height(vc->gfx.drawing_area) * ws;

    if (vc->gfx.scanout_mode) {
        if (!vc->gfx.guest_fb.framebuffer) {
            return;
        }

#ifdef CONFIG_GBM
        if (dmabuf) {
            if (!dmabuf->draw_submitted) {
                return;
            } else {
                dmabuf->draw_submitted = false;
            }
        }
#endif

        glBindFramebuffer(GL_READ_FRAMEBUFFER, vc->gfx.guest_fb.framebuffer);
        /* GtkGLArea sets GL_DRAW_FRAMEBUFFER for us */

        glViewport(0, 0, ww, wh);
        y1 = vc->gfx.y0_top ? 0 : vc->gfx.h;
        y2 = vc->gfx.y0_top ? vc->gfx.h : 0;
        glBlitFramebuffer(0, y1, vc->gfx.w, y2,
                          0, 0, ww, wh,
                          GL_COLOR_BUFFER_BIT, GL_NEAREST);
#ifdef CONFIG_GBM
        if (dmabuf) {
            egl_dmabuf_create_sync(dmabuf);
        }
#endif
        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;
        }
        gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));

        surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, ww, wh);
        surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds);
    }
}

void gd_gl_area_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;
    }

    gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
    surface_gl_update_texture(vc->gfx.gls, vc->gfx.ds, x, y, w, h);
    vc->gfx.glupdates++;
    gdk_gl_context_clear_current();
}

void gd_gl_area_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.gls) {
        if (!gtk_widget_get_realized(vc->gfx.drawing_area)) {
            return;
        }
        gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
        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_gl_area_set_scanout_mode(vc, false);
        gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
    }
}

void gd_gl_area_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;
    }

    if (vc->gfx.gls) {
        gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
        surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
        surface_gl_create_texture(vc->gfx.gls, surface);
    }
    vc->gfx.ds = surface;

    if (resized) {
        gd_update_windowsize(vc);
    }
}

static int gd_cmp_gl_context_version(int major, int minor, QEMUGLParams *params)
{
    if (major > params->major_ver) {
        return 1;
    }
    if (major < params->major_ver) {
        return -1;
    }
    if (minor > params->minor_ver) {
        return 1;
    }
    if (minor < params->minor_ver) {
        return -1;
    }
    return 0;
}

QEMUGLContext gd_gl_area_create_context(DisplayGLCtx *dgc,
                                        QEMUGLParams *params)
{
    VirtualConsole *vc = container_of(dgc, VirtualConsole, gfx.dgc);
    GdkWindow *window;
    GdkGLContext *ctx;
    GError *err = NULL;
    int major, minor;

    window = gtk_widget_get_window(vc->gfx.drawing_area);
    ctx = gdk_window_create_gl_context(window, &err);
    if (err) {
        g_printerr("Create gdk gl context failed: %s\n", err->message);
        g_error_free(err);
        return NULL;
    }
    gdk_gl_context_set_required_version(ctx,
                                        params->major_ver,
                                        params->minor_ver);
    gdk_gl_context_realize(ctx, &err);
    if (err) {
        g_printerr("Realize gdk gl context failed: %s\n", err->message);
        g_error_free(err);
        g_clear_object(&ctx);
        return NULL;
    }

    gdk_gl_context_make_current(ctx);
    gdk_gl_context_get_version(ctx, &major, &minor);
    gdk_gl_context_clear_current();
    gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));

    if (gd_cmp_gl_context_version(major, minor, params) == -1) {
        /* created ctx version < requested version */
        g_clear_object(&ctx);
    }

    trace_gd_gl_area_create_context(ctx, params->major_ver, params->minor_ver);
    return ctx;
}

void gd_gl_area_destroy_context(DisplayGLCtx *dgc, QEMUGLContext ctx)
{
    GdkGLContext *current_ctx = gdk_gl_context_get_current();

    trace_gd_gl_area_destroy_context(ctx, current_ctx);
    if (ctx == current_ctx) {
        gdk_gl_context_clear_current();
    }
    g_clear_object(&ctx);
}

void gd_gl_area_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,
                                void *d3d_tex2d)
{
    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;

    gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));

    if (backing_id == 0 || vc->gfx.w == 0 || vc->gfx.h == 0) {
        gtk_gl_area_set_scanout_mode(vc, false);
        return;
    }

    egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height,
                         backing_id, false);
}

void gd_gl_area_scanout_disable(DisplayChangeListener *dcl)
{
    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);

    gtk_gl_area_set_scanout_mode(vc, false);
}

void gd_gl_area_scanout_flush(DisplayChangeListener *dcl,
                          uint32_t x, uint32_t y, uint32_t w, uint32_t h)
{
    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);

    if (vc->gfx.guest_fb.dmabuf && !vc->gfx.guest_fb.dmabuf->draw_submitted) {
        graphic_hw_gl_block(vc->gfx.dcl.con, true);
        vc->gfx.guest_fb.dmabuf->draw_submitted = true;
        gtk_gl_area_set_scanout_mode(vc, true);
    }
    gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
}

void gd_gl_area_scanout_dmabuf(DisplayChangeListener *dcl,
                               QemuDmaBuf *dmabuf)
{
#ifdef CONFIG_GBM
    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);

    gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
    egl_dmabuf_import_texture(dmabuf);
    if (!dmabuf->texture) {
        return;
    }

    gd_gl_area_scanout_texture(dcl, dmabuf->texture,
                               dmabuf->y0_top,
                               dmabuf->backing_width, dmabuf->backing_height,
                               dmabuf->x, dmabuf->y, dmabuf->width,
                               dmabuf->height, NULL);

    if (dmabuf->allow_fences) {
        vc->gfx.guest_fb.dmabuf = dmabuf;
    }
#endif
}

void gtk_gl_area_init(void)
{
    display_opengl = 1;
}

int gd_gl_area_make_current(DisplayGLCtx *dgc,
                            QEMUGLContext ctx)
{
    gdk_gl_context_make_current(ctx);
    return 0;
}
Commit	Line	Data
925a0400 GH	1	/*
	2	* GTK UI -- glarea opengl code.
	3	*
	4	* Requires 3.16+ (GtkGLArea widget).
	5	*
	6	* This work is licensed under the terms of the GNU GPL, version 2 or later.
	7	* See the COPYING file in the top-level directory.
	8	*/
	9
e16f4c87	10	#include "qemu/osdep.h"
65b847d2	11	#include "qemu/main-loop.h"
925a0400 GH	12
	13	#include "trace.h"
	14
	15	#include "ui/console.h"
	16	#include "ui/gtk.h"
	17	#include "ui/egl-helpers.h"
	18
	19	#include "sysemu/sysemu.h"
	20
	21	static void gtk_gl_area_set_scanout_mode(VirtualConsole *vc, bool scanout)
	22	{
	23	if (vc->gfx.scanout_mode == scanout) {
	24	return;
	25	}
	26
	27	vc->gfx.scanout_mode = scanout;
	28	if (!vc->gfx.scanout_mode) {
83b4b236	29	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
a4f113fd	30	egl_fb_destroy(&vc->gfx.guest_fb);
925a0400 GH	31	if (vc->gfx.surface) {
	32	surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
	33	surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
	34	}
	35	}
	36	}
	37
	38	/ DisplayState Callbacks (opengl version) /
	39
	40	void gd_gl_area_draw(VirtualConsole *vc)
	41	{
55f4b767 DK	42	#ifdef CONFIG_GBM
	43	QemuDmaBuf *dmabuf = vc->gfx.guest_fb.dmabuf;
	44	#endif
4323118c	45	int ww, wh, ws, y1, y2;
925a0400 GH	46
	47	if (!vc->gfx.gls) {
	48	return;
	49	}
	50
	51	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
4323118c AO	52	ws = gdk_window_get_scale_factor(gtk_widget_get_window(vc->gfx.drawing_area));
	53	ww = gtk_widget_get_allocated_width(vc->gfx.drawing_area) * ws;
	54	wh = gtk_widget_get_allocated_height(vc->gfx.drawing_area) * ws;
925a0400 GH	55
925a0400 GH	56	if (vc->gfx.scanout_mode) {
a4f113fd	57	if (!vc->gfx.guest_fb.framebuffer) {
925a0400 GH	58	return;
	59	}
	60
55f4b767 DK	61	#ifdef CONFIG_GBM
	62	if (dmabuf) {
	63	if (!dmabuf->draw_submitted) {
	64	return;
	65	} else {
	66	dmabuf->draw_submitted = false;
	67	}
	68	}
	69	#endif
	70
a4f113fd	71	glBindFramebuffer(GL_READ_FRAMEBUFFER, vc->gfx.guest_fb.framebuffer);
925a0400 GH	72	/* GtkGLArea sets GL_DRAW_FRAMEBUFFER for us */
	73
	74	glViewport(0, 0, ww, wh);
	75	y1 = vc->gfx.y0_top ? 0 : vc->gfx.h;
	76	y2 = vc->gfx.y0_top ? vc->gfx.h : 0;
	77	glBlitFramebuffer(0, y1, vc->gfx.w, y2,
	78	0, 0, ww, wh,
	79	GL_COLOR_BUFFER_BIT, GL_NEAREST);
55f4b767 DK	80	#ifdef CONFIG_GBM
	81	if (dmabuf) {
	82	egl_dmabuf_create_sync(dmabuf);
	83	}
	84	#endif
	85	glFlush();
	86	#ifdef CONFIG_GBM
	87	if (dmabuf) {
	88	egl_dmabuf_create_fence(dmabuf);
	89	if (dmabuf->fence_fd > 0) {
	90	qemu_set_fd_handler(dmabuf->fence_fd, gd_hw_gl_flushed, NULL, vc);
	91	return;
	92	}
	93	graphic_hw_gl_block(vc->gfx.dcl.con, false);
	94	}
	95	#endif
925a0400 GH	96	} else {
	97	if (!vc->gfx.ds) {
	98	return;
	99	}
	100	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	101
	102	surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, ww, wh);
	103	surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds);
	104	}
	105	}
	106
	107	void gd_gl_area_update(DisplayChangeListener *dcl,
	108	int x, int y, int w, int h)
	109	{
	110	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	111
	112	if (!vc->gfx.gls \|\| !vc->gfx.ds) {
	113	return;
	114	}
	115
	116	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	117	surface_gl_update_texture(vc->gfx.gls, vc->gfx.ds, x, y, w, h);
	118	vc->gfx.glupdates++;
83b4b236	119	gdk_gl_context_clear_current();
925a0400 GH	120	}
	121
	122	void gd_gl_area_refresh(DisplayChangeListener *dcl)
	123	{
	124	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	125
aeffd071	126	gd_update_monitor_refresh_rate(vc, vc->window ? vc->window : vc->gfx.drawing_area);
760deab3	127
925a0400 GH	128	if (!vc->gfx.gls) {
	129	if (!gtk_widget_get_realized(vc->gfx.drawing_area)) {
	130	return;
	131	}
	132	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
46e19e14	133	vc->gfx.gls = qemu_gl_init_shader();
925a0400 GH	134	if (vc->gfx.ds) {
	135	surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
	136	}
	137	}
	138
	139	graphic_hw_update(dcl->con);
	140
	141	if (vc->gfx.glupdates) {
	142	vc->gfx.glupdates = 0;
	143	gtk_gl_area_set_scanout_mode(vc, false);
	144	gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
	145	}
	146	}
	147
	148	void gd_gl_area_switch(DisplayChangeListener *dcl,
	149	DisplaySurface *surface)
	150	{
	151	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	152	bool resized = true;
	153
	154	trace_gd_switch(vc->label, surface_width(surface), surface_height(surface));
	155
	156	if (vc->gfx.ds &&
	157	surface_width(vc->gfx.ds) == surface_width(surface) &&
	158	surface_height(vc->gfx.ds) == surface_height(surface)) {
	159	resized = false;
	160	}
	161
	162	if (vc->gfx.gls) {
	163	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	164	surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
	165	surface_gl_create_texture(vc->gfx.gls, surface);
	166	}
	167	vc->gfx.ds = surface;
	168
	169	if (resized) {
	170	gd_update_windowsize(vc);
	171	}
	172	}
	173
09053670 VR	174	static int gd_cmp_gl_context_version(int major, int minor, QEMUGLParams *params)
	175	{
	176	if (major > params->major_ver) {
	177	return 1;
	178	}
	179	if (major < params->major_ver) {
	180	return -1;
	181	}
	182	if (minor > params->minor_ver) {
	183	return 1;
	184	}
	185	if (minor < params->minor_ver) {
	186	return -1;
	187	}
	188	return 0;
	189	}
	190
5e79d516	191	QEMUGLContext gd_gl_area_create_context(DisplayGLCtx *dgc,
925a0400 GH	192	QEMUGLParams *params)
925a0400 GH	193	{
5e79d516	194	VirtualConsole *vc = container_of(dgc, VirtualConsole, gfx.dgc);
925a0400 GH	195	GdkWindow *window;
	196	GdkGLContext *ctx;
	197	GError *err = NULL;
09053670	198	int major, minor;
925a0400	199
925a0400 GH	200	window = gtk_widget_get_window(vc->gfx.drawing_area);
925a0400 GH	201	ctx = gdk_window_create_gl_context(window, &err);
2cd1e3f9 PN	202	if (err) {
	203	g_printerr("Create gdk gl context failed: %s\n", err->message);
	204	g_error_free(err);
	205	return NULL;
	206	}
925a0400 GH	207	gdk_gl_context_set_required_version(ctx,
	208	params->major_ver,
	209	params->minor_ver);
	210	gdk_gl_context_realize(ctx, &err);
2cd1e3f9 PN	211	if (err) {
	212	g_printerr("Realize gdk gl context failed: %s\n", err->message);
	213	g_error_free(err);
	214	g_clear_object(&ctx);
	215	return NULL;
	216	}
09053670 VR	217
	218	gdk_gl_context_make_current(ctx);
	219	gdk_gl_context_get_version(ctx, &major, &minor);
	220	gdk_gl_context_clear_current();
	221	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	222
	223	if (gd_cmp_gl_context_version(major, minor, params) == -1) {
	224	/* created ctx version < requested version */
	225	g_clear_object(&ctx);
	226	}
	227
	228	trace_gd_gl_area_create_context(ctx, params->major_ver, params->minor_ver);
925a0400 GH	229	return ctx;
	230	}
	231
5e79d516	232	void gd_gl_area_destroy_context(DisplayGLCtx *dgc, QEMUGLContext ctx)
925a0400	233	{
e561b3b7 VR	234	GdkGLContext *current_ctx = gdk_gl_context_get_current();
	235
	236	trace_gd_gl_area_destroy_context(ctx, current_ctx);
	237	if (ctx == current_ctx) {
	238	gdk_gl_context_clear_current();
	239	}
	240	g_clear_object(&ctx);
925a0400 GH	241	}
925a0400 GH	242
f4c36bda GH	243	void gd_gl_area_scanout_texture(DisplayChangeListener *dcl,
	244	uint32_t backing_id,
	245	bool backing_y_0_top,
	246	uint32_t backing_width,
	247	uint32_t backing_height,
	248	uint32_t x, uint32_t y,
bf41ab61 MAL	249	uint32_t w, uint32_t h,
bf41ab61 MAL	250	void *d3d_tex2d)
925a0400 GH	251	{
	252	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	253
	254	vc->gfx.x = x;
	255	vc->gfx.y = y;
	256	vc->gfx.w = w;
	257	vc->gfx.h = h;
925a0400 GH	258	vc->gfx.y0_top = backing_y_0_top;
	259
	260	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	261
2ff408de	262	if (backing_id == 0 \|\| vc->gfx.w == 0 \|\| vc->gfx.h == 0) {
925a0400 GH	263	gtk_gl_area_set_scanout_mode(vc, false);
	264	return;
	265	}
	266
74083f9c GH	267	egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height,
74083f9c GH	268	backing_id, false);
925a0400 GH	269	}
925a0400 GH	270
568b12fc MAL	271	void gd_gl_area_scanout_disable(DisplayChangeListener *dcl)
	272	{
	273	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	274
	275	gtk_gl_area_set_scanout_mode(vc, false);
	276	}
	277
925a0400 GH	278	void gd_gl_area_scanout_flush(DisplayChangeListener *dcl,
	279	uint32_t x, uint32_t y, uint32_t w, uint32_t h)
	280	{
	281	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	282
64f1359b	283	if (vc->gfx.guest_fb.dmabuf && !vc->gfx.guest_fb.dmabuf->draw_submitted) {
65b847d2	284	graphic_hw_gl_block(vc->gfx.dcl.con, true);
55f4b767	285	vc->gfx.guest_fb.dmabuf->draw_submitted = true;
92b58156	286	gtk_gl_area_set_scanout_mode(vc, true);
65b847d2	287	}
925a0400 GH	288	gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
	289	}
	290
2606519b MAL	291	void gd_gl_area_scanout_dmabuf(DisplayChangeListener *dcl,
	292	QemuDmaBuf *dmabuf)
	293	{
bc6a3565	294	#ifdef CONFIG_GBM
2606519b MAL	295	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	296
	297	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	298	egl_dmabuf_import_texture(dmabuf);
	299	if (!dmabuf->texture) {
	300	return;
	301	}
	302
	303	gd_gl_area_scanout_texture(dcl, dmabuf->texture,
9ac06df8 DK	304	dmabuf->y0_top,
	305	dmabuf->backing_width, dmabuf->backing_height,
	306	dmabuf->x, dmabuf->y, dmabuf->width,
	307	dmabuf->height, NULL);
65b847d2 VK	308
	309	if (dmabuf->allow_fences) {
	310	vc->gfx.guest_fb.dmabuf = dmabuf;
	311	}
2606519b MAL	312	#endif
	313	}
	314
925a0400 GH	315	void gtk_gl_area_init(void)
	316	{
	317	display_opengl = 1;
	318	}
	319
5e79d516	320	int gd_gl_area_make_current(DisplayGLCtx *dgc,
925a0400 GH	321	QEMUGLContext ctx)
	322	{
	323	gdk_gl_context_make_current(ctx);
	324	return 0;
	325	}