[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, y1, y2;

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

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

    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);
    }

    graphic_hw_gl_flushed(vc->gfx.dcl.con);
}

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);

    vc->gfx.dcl.update_interval = gd_monitor_update_interval(
            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);
    }
}

QEMUGLContext gd_gl_area_create_context(DisplayChangeListener *dcl,
                                        QEMUGLParams *params)
{
    VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
    GdkWindow *window;
    GdkGLContext *ctx;
    GError *err = NULL;

    gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
    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;
    }
    return ctx;
}

void gd_gl_area_destroy_context(DisplayChangeListener *dcl, QEMUGLContext ctx)
{
    /* FIXME */
}

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)
{
    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) {
        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,
                               false, dmabuf->width, dmabuf->height,
                               0, 0, dmabuf->width, dmabuf->height);

    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(DisplayChangeListener *dcl,
                            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
925a0400 GH	44	int ww, wh, y1, y2;
	45
	46	if (!vc->gfx.gls) {
	47	return;
	48	}
	49
	50	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	51	ww = gtk_widget_get_allocated_width(vc->gfx.drawing_area);
	52	wh = gtk_widget_get_allocated_height(vc->gfx.drawing_area);
	53
	54	if (vc->gfx.scanout_mode) {
a4f113fd	55	if (!vc->gfx.guest_fb.framebuffer) {
925a0400 GH	56	return;
	57	}
	58
55f4b767 DK	59	#ifdef CONFIG_GBM
	60	if (dmabuf) {
	61	if (!dmabuf->draw_submitted) {
	62	return;
	63	} else {
	64	dmabuf->draw_submitted = false;
	65	}
	66	}
	67	#endif
	68
a4f113fd	69	glBindFramebuffer(GL_READ_FRAMEBUFFER, vc->gfx.guest_fb.framebuffer);
925a0400 GH	70	/* GtkGLArea sets GL_DRAW_FRAMEBUFFER for us */
	71
	72	glViewport(0, 0, ww, wh);
	73	y1 = vc->gfx.y0_top ? 0 : vc->gfx.h;
	74	y2 = vc->gfx.y0_top ? vc->gfx.h : 0;
	75	glBlitFramebuffer(0, y1, vc->gfx.w, y2,
	76	0, 0, ww, wh,
	77	GL_COLOR_BUFFER_BIT, GL_NEAREST);
55f4b767 DK	78	#ifdef CONFIG_GBM
	79	if (dmabuf) {
	80	egl_dmabuf_create_sync(dmabuf);
	81	}
	82	#endif
	83	glFlush();
	84	#ifdef CONFIG_GBM
	85	if (dmabuf) {
	86	egl_dmabuf_create_fence(dmabuf);
	87	if (dmabuf->fence_fd > 0) {
	88	qemu_set_fd_handler(dmabuf->fence_fd, gd_hw_gl_flushed, NULL, vc);
	89	return;
	90	}
	91	graphic_hw_gl_block(vc->gfx.dcl.con, false);
	92	}
	93	#endif
925a0400 GH	94	} else {
	95	if (!vc->gfx.ds) {
	96	return;
	97	}
	98	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	99
	100	surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, ww, wh);
	101	surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds);
	102	}
3cddb8b9	103
3cddb8b9	104	graphic_hw_gl_flushed(vc->gfx.dcl.con);
925a0400 GH	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++;
	119	}
	120
	121	void gd_gl_area_refresh(DisplayChangeListener *dcl)
	122	{
	123	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	124
760deab3 NP	125	vc->gfx.dcl.update_interval = gd_monitor_update_interval(
	126	vc->window ? vc->window : vc->gfx.drawing_area);
	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
	174	QEMUGLContext gd_gl_area_create_context(DisplayChangeListener *dcl,
	175	QEMUGLParams *params)
	176	{
	177	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	178	GdkWindow *window;
	179	GdkGLContext *ctx;
	180	GError *err = NULL;
	181
	182	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	183	window = gtk_widget_get_window(vc->gfx.drawing_area);
	184	ctx = gdk_window_create_gl_context(window, &err);
2cd1e3f9 PN	185	if (err) {
	186	g_printerr("Create gdk gl context failed: %s\n", err->message);
	187	g_error_free(err);
	188	return NULL;
	189	}
925a0400 GH	190	gdk_gl_context_set_required_version(ctx,
	191	params->major_ver,
	192	params->minor_ver);
	193	gdk_gl_context_realize(ctx, &err);
2cd1e3f9 PN	194	if (err) {
	195	g_printerr("Realize gdk gl context failed: %s\n", err->message);
	196	g_error_free(err);
	197	g_clear_object(&ctx);
	198	return NULL;
	199	}
925a0400 GH	200	return ctx;
	201	}
	202
	203	void gd_gl_area_destroy_context(DisplayChangeListener *dcl, QEMUGLContext ctx)
	204	{
	205	/* FIXME */
	206	}
	207
f4c36bda GH	208	void gd_gl_area_scanout_texture(DisplayChangeListener *dcl,
	209	uint32_t backing_id,
	210	bool backing_y_0_top,
	211	uint32_t backing_width,
	212	uint32_t backing_height,
	213	uint32_t x, uint32_t y,
	214	uint32_t w, uint32_t h)
925a0400 GH	215	{
	216	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	217
	218	vc->gfx.x = x;
	219	vc->gfx.y = y;
	220	vc->gfx.w = w;
	221	vc->gfx.h = h;
925a0400 GH	222	vc->gfx.y0_top = backing_y_0_top;
	223
	224	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	225
2ff408de	226	if (backing_id == 0 \|\| vc->gfx.w == 0 \|\| vc->gfx.h == 0) {
925a0400 GH	227	gtk_gl_area_set_scanout_mode(vc, false);
	228	return;
	229	}
	230
	231	gtk_gl_area_set_scanout_mode(vc, true);
74083f9c GH	232	egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height,
74083f9c GH	233	backing_id, false);
925a0400 GH	234	}
925a0400 GH	235
568b12fc MAL	236	void gd_gl_area_scanout_disable(DisplayChangeListener *dcl)
	237	{
	238	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	239
	240	gtk_gl_area_set_scanout_mode(vc, false);
	241	}
	242
925a0400 GH	243	void gd_gl_area_scanout_flush(DisplayChangeListener *dcl,
	244	uint32_t x, uint32_t y, uint32_t w, uint32_t h)
	245	{
	246	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	247
65b847d2 VK	248	if (vc->gfx.guest_fb.dmabuf) {
65b847d2 VK	249	graphic_hw_gl_block(vc->gfx.dcl.con, true);
55f4b767	250	vc->gfx.guest_fb.dmabuf->draw_submitted = true;
65b847d2	251	}
925a0400 GH	252	gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
	253	}
	254
2606519b MAL	255	void gd_gl_area_scanout_dmabuf(DisplayChangeListener *dcl,
	256	QemuDmaBuf *dmabuf)
	257	{
bc6a3565	258	#ifdef CONFIG_GBM
2606519b MAL	259	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	260
	261	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	262	egl_dmabuf_import_texture(dmabuf);
	263	if (!dmabuf->texture) {
	264	return;
	265	}
	266
	267	gd_gl_area_scanout_texture(dcl, dmabuf->texture,
	268	false, dmabuf->width, dmabuf->height,
	269	0, 0, dmabuf->width, dmabuf->height);
65b847d2 VK	270
	271	if (dmabuf->allow_fences) {
	272	vc->gfx.guest_fb.dmabuf = dmabuf;
	273	}
2606519b MAL	274	#endif
	275	}
	276
925a0400 GH	277	void gtk_gl_area_init(void)
	278	{
	279	display_opengl = 1;
	280	}
	281
925a0400 GH	282	int gd_gl_area_make_current(DisplayChangeListener *dcl,
	283	QEMUGLContext ctx)
	284	{
	285	gdk_gl_context_make_current(ctx);
	286	return 0;
	287	}