[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) {
        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++;
}

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;
    }

    gtk_gl_area_set_scanout_mode(vc, true);
    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_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->width, dmabuf->height,
                               dmabuf->x, dmabuf->y, dmabuf->scanout_width,
                               dmabuf->scanout_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) {
a4f113fd	29	egl_fb_destroy(&vc->gfx.guest_fb);
925a0400 GH	30	if (vc->gfx.surface) {
	31	surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
	32	surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
	33	}
	34	}
	35	}
	36
	37	/ DisplayState Callbacks (opengl version) /
	38
	39	void gd_gl_area_draw(VirtualConsole *vc)
	40	{
55f4b767 DK	41	#ifdef CONFIG_GBM
	42	QemuDmaBuf *dmabuf = vc->gfx.guest_fb.dmabuf;
	43	#endif
4323118c	44	int ww, wh, ws, y1, y2;
925a0400 GH	45
	46	if (!vc->gfx.gls) {
	47	return;
	48	}
	49
	50	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
4323118c AO	51	ws = gdk_window_get_scale_factor(gtk_widget_get_window(vc->gfx.drawing_area));
	52	ww = gtk_widget_get_allocated_width(vc->gfx.drawing_area) * ws;
	53	wh = gtk_widget_get_allocated_height(vc->gfx.drawing_area) * ws;
925a0400 GH	54
925a0400 GH	55	if (vc->gfx.scanout_mode) {
a4f113fd	56	if (!vc->gfx.guest_fb.framebuffer) {
925a0400 GH	57	return;
	58	}
	59
55f4b767 DK	60	#ifdef CONFIG_GBM
	61	if (dmabuf) {
	62	if (!dmabuf->draw_submitted) {
	63	return;
	64	} else {
	65	dmabuf->draw_submitted = false;
	66	}
	67	}
	68	#endif
	69
a4f113fd	70	glBindFramebuffer(GL_READ_FRAMEBUFFER, vc->gfx.guest_fb.framebuffer);
925a0400 GH	71	/* GtkGLArea sets GL_DRAW_FRAMEBUFFER for us */
	72
	73	glViewport(0, 0, ww, wh);
	74	y1 = vc->gfx.y0_top ? 0 : vc->gfx.h;
	75	y2 = vc->gfx.y0_top ? vc->gfx.h : 0;
	76	glBlitFramebuffer(0, y1, vc->gfx.w, y2,
	77	0, 0, ww, wh,
	78	GL_COLOR_BUFFER_BIT, GL_NEAREST);
55f4b767 DK	79	#ifdef CONFIG_GBM
	80	if (dmabuf) {
	81	egl_dmabuf_create_sync(dmabuf);
	82	}
	83	#endif
	84	glFlush();
	85	#ifdef CONFIG_GBM
	86	if (dmabuf) {
	87	egl_dmabuf_create_fence(dmabuf);
	88	if (dmabuf->fence_fd > 0) {
	89	qemu_set_fd_handler(dmabuf->fence_fd, gd_hw_gl_flushed, NULL, vc);
	90	return;
	91	}
	92	graphic_hw_gl_block(vc->gfx.dcl.con, false);
	93	}
	94	#endif
925a0400 GH	95	} else {
	96	if (!vc->gfx.ds) {
	97	return;
	98	}
	99	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	100
	101	surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, ww, wh);
	102	surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds);
	103	}
	104	}
	105
	106	void gd_gl_area_update(DisplayChangeListener *dcl,
	107	int x, int y, int w, int h)
	108	{
	109	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	110
	111	if (!vc->gfx.gls \|\| !vc->gfx.ds) {
	112	return;
	113	}
	114
	115	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	116	surface_gl_update_texture(vc->gfx.gls, vc->gfx.ds, x, y, w, h);
	117	vc->gfx.glupdates++;
	118	}
	119
	120	void gd_gl_area_refresh(DisplayChangeListener *dcl)
	121	{
	122	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	123
aeffd071	124	gd_update_monitor_refresh_rate(vc, vc->window ? vc->window : vc->gfx.drawing_area);
760deab3	125
925a0400 GH	126	if (!vc->gfx.gls) {
	127	if (!gtk_widget_get_realized(vc->gfx.drawing_area)) {
	128	return;
	129	}
	130	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
46e19e14	131	vc->gfx.gls = qemu_gl_init_shader();
925a0400 GH	132	if (vc->gfx.ds) {
	133	surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
	134	}
	135	}
	136
	137	graphic_hw_update(dcl->con);
	138
	139	if (vc->gfx.glupdates) {
	140	vc->gfx.glupdates = 0;
	141	gtk_gl_area_set_scanout_mode(vc, false);
	142	gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
	143	}
	144	}
	145
	146	void gd_gl_area_switch(DisplayChangeListener *dcl,
	147	DisplaySurface *surface)
	148	{
	149	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	150	bool resized = true;
	151
	152	trace_gd_switch(vc->label, surface_width(surface), surface_height(surface));
	153
	154	if (vc->gfx.ds &&
	155	surface_width(vc->gfx.ds) == surface_width(surface) &&
	156	surface_height(vc->gfx.ds) == surface_height(surface)) {
	157	resized = false;
	158	}
	159
	160	if (vc->gfx.gls) {
	161	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	162	surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
	163	surface_gl_create_texture(vc->gfx.gls, surface);
	164	}
	165	vc->gfx.ds = surface;
	166
	167	if (resized) {
	168	gd_update_windowsize(vc);
	169	}
	170	}
	171
09053670 VR	172	static int gd_cmp_gl_context_version(int major, int minor, QEMUGLParams *params)
	173	{
	174	if (major > params->major_ver) {
	175	return 1;
	176	}
	177	if (major < params->major_ver) {
	178	return -1;
	179	}
	180	if (minor > params->minor_ver) {
	181	return 1;
	182	}
	183	if (minor < params->minor_ver) {
	184	return -1;
	185	}
	186	return 0;
	187	}
	188
5e79d516	189	QEMUGLContext gd_gl_area_create_context(DisplayGLCtx *dgc,
925a0400 GH	190	QEMUGLParams *params)
925a0400 GH	191	{
5e79d516	192	VirtualConsole *vc = container_of(dgc, VirtualConsole, gfx.dgc);
925a0400 GH	193	GdkWindow *window;
	194	GdkGLContext *ctx;
	195	GError *err = NULL;
09053670	196	int major, minor;
925a0400	197
925a0400 GH	198	window = gtk_widget_get_window(vc->gfx.drawing_area);
925a0400 GH	199	ctx = gdk_window_create_gl_context(window, &err);
2cd1e3f9 PN	200	if (err) {
	201	g_printerr("Create gdk gl context failed: %s\n", err->message);
	202	g_error_free(err);
	203	return NULL;
	204	}
925a0400 GH	205	gdk_gl_context_set_required_version(ctx,
	206	params->major_ver,
	207	params->minor_ver);
	208	gdk_gl_context_realize(ctx, &err);
2cd1e3f9 PN	209	if (err) {
	210	g_printerr("Realize gdk gl context failed: %s\n", err->message);
	211	g_error_free(err);
	212	g_clear_object(&ctx);
	213	return NULL;
	214	}
09053670 VR	215
	216	gdk_gl_context_make_current(ctx);
	217	gdk_gl_context_get_version(ctx, &major, &minor);
	218	gdk_gl_context_clear_current();
	219	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	220
	221	if (gd_cmp_gl_context_version(major, minor, params) == -1) {
	222	/* created ctx version < requested version */
	223	g_clear_object(&ctx);
	224	}
	225
	226	trace_gd_gl_area_create_context(ctx, params->major_ver, params->minor_ver);
925a0400 GH	227	return ctx;
	228	}
	229
5e79d516	230	void gd_gl_area_destroy_context(DisplayGLCtx *dgc, QEMUGLContext ctx)
925a0400	231	{
e561b3b7 VR	232	GdkGLContext *current_ctx = gdk_gl_context_get_current();
	233
	234	trace_gd_gl_area_destroy_context(ctx, current_ctx);
	235	if (ctx == current_ctx) {
	236	gdk_gl_context_clear_current();
	237	}
	238	g_clear_object(&ctx);
925a0400 GH	239	}
925a0400 GH	240
f4c36bda GH	241	void gd_gl_area_scanout_texture(DisplayChangeListener *dcl,
	242	uint32_t backing_id,
	243	bool backing_y_0_top,
	244	uint32_t backing_width,
	245	uint32_t backing_height,
	246	uint32_t x, uint32_t y,
bf41ab61 MAL	247	uint32_t w, uint32_t h,
bf41ab61 MAL	248	void *d3d_tex2d)
925a0400 GH	249	{
	250	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	251
	252	vc->gfx.x = x;
	253	vc->gfx.y = y;
	254	vc->gfx.w = w;
	255	vc->gfx.h = h;
925a0400 GH	256	vc->gfx.y0_top = backing_y_0_top;
	257
	258	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	259
2ff408de	260	if (backing_id == 0 \|\| vc->gfx.w == 0 \|\| vc->gfx.h == 0) {
925a0400 GH	261	gtk_gl_area_set_scanout_mode(vc, false);
	262	return;
	263	}
	264
	265	gtk_gl_area_set_scanout_mode(vc, true);
74083f9c GH	266	egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height,
74083f9c GH	267	backing_id, false);
925a0400 GH	268	}
925a0400 GH	269
568b12fc MAL	270	void gd_gl_area_scanout_disable(DisplayChangeListener *dcl)
	271	{
	272	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	273
	274	gtk_gl_area_set_scanout_mode(vc, false);
	275	}
	276
925a0400 GH	277	void gd_gl_area_scanout_flush(DisplayChangeListener *dcl,
	278	uint32_t x, uint32_t y, uint32_t w, uint32_t h)
	279	{
	280	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	281
64f1359b	282	if (vc->gfx.guest_fb.dmabuf && !vc->gfx.guest_fb.dmabuf->draw_submitted) {
65b847d2	283	graphic_hw_gl_block(vc->gfx.dcl.con, true);
55f4b767	284	vc->gfx.guest_fb.dmabuf->draw_submitted = true;
65b847d2	285	}
925a0400 GH	286	gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
	287	}
	288
2606519b MAL	289	void gd_gl_area_scanout_dmabuf(DisplayChangeListener *dcl,
	290	QemuDmaBuf *dmabuf)
	291	{
bc6a3565	292	#ifdef CONFIG_GBM
2606519b MAL	293	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	294
	295	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	296	egl_dmabuf_import_texture(dmabuf);
	297	if (!dmabuf->texture) {
	298	return;
	299	}
	300
	301	gd_gl_area_scanout_texture(dcl, dmabuf->texture,
94400fa5	302	dmabuf->y0_top, dmabuf->width, dmabuf->height,
37802a24	303	dmabuf->x, dmabuf->y, dmabuf->scanout_width,
bf41ab61	304	dmabuf->scanout_height, NULL);
65b847d2 VK	305
	306	if (dmabuf->allow_fences) {
	307	vc->gfx.guest_fb.dmabuf = dmabuf;
	308	}
2606519b MAL	309	#endif
	310	}
	311
925a0400 GH	312	void gtk_gl_area_init(void)
	313	{
	314	display_opengl = 1;
	315	}
	316
5e79d516	317	int gd_gl_area_make_current(DisplayGLCtx *dgc,
925a0400 GH	318	QEMUGLContext ctx)
	319	{
	320	gdk_gl_context_make_current(ctx);
	321	return 0;
	322	}