[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)
{
    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;
        }

        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);
    } 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);
    }

#ifdef CONFIG_GBM
    if (vc->gfx.guest_fb.dmabuf) {
        egl_dmabuf_create_sync(vc->gfx.guest_fb.dmabuf);
    }
#endif

    glFlush();
#ifdef CONFIG_GBM
    if (vc->gfx.guest_fb.dmabuf) {
        QemuDmaBuf *dmabuf = vc->gfx.guest_fb.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
    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);

    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);
    }
    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	{
	41	int ww, wh, y1, y2;
	42
	43	if (!vc->gfx.gls) {
	44	return;
	45	}
	46
	47	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	48	ww = gtk_widget_get_allocated_width(vc->gfx.drawing_area);
	49	wh = gtk_widget_get_allocated_height(vc->gfx.drawing_area);
	50
	51	if (vc->gfx.scanout_mode) {
a4f113fd	52	if (!vc->gfx.guest_fb.framebuffer) {
925a0400 GH	53	return;
	54	}
	55
a4f113fd	56	glBindFramebuffer(GL_READ_FRAMEBUFFER, vc->gfx.guest_fb.framebuffer);
925a0400 GH	57	/* GtkGLArea sets GL_DRAW_FRAMEBUFFER for us */
	58
	59	glViewport(0, 0, ww, wh);
	60	y1 = vc->gfx.y0_top ? 0 : vc->gfx.h;
	61	y2 = vc->gfx.y0_top ? vc->gfx.h : 0;
	62	glBlitFramebuffer(0, y1, vc->gfx.w, y2,
	63	0, 0, ww, wh,
	64	GL_COLOR_BUFFER_BIT, GL_NEAREST);
	65	} else {
	66	if (!vc->gfx.ds) {
	67	return;
	68	}
	69	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	70
	71	surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, ww, wh);
	72	surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds);
	73	}
3cddb8b9	74
65b847d2 VK	75	#ifdef CONFIG_GBM
	76	if (vc->gfx.guest_fb.dmabuf) {
	77	egl_dmabuf_create_sync(vc->gfx.guest_fb.dmabuf);
	78	}
	79	#endif
	80
3cddb8b9	81	glFlush();
65b847d2 VK	82	#ifdef CONFIG_GBM
	83	if (vc->gfx.guest_fb.dmabuf) {
	84	QemuDmaBuf *dmabuf = vc->gfx.guest_fb.dmabuf;
	85
	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
3cddb8b9	94	graphic_hw_gl_flushed(vc->gfx.dcl.con);
925a0400 GH	95	}
	96
	97	void gd_gl_area_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	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	107	surface_gl_update_texture(vc->gfx.gls, vc->gfx.ds, x, y, w, h);
	108	vc->gfx.glupdates++;
	109	}
	110
	111	void gd_gl_area_refresh(DisplayChangeListener *dcl)
	112	{
	113	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	114
	115	if (!vc->gfx.gls) {
	116	if (!gtk_widget_get_realized(vc->gfx.drawing_area)) {
	117	return;
	118	}
	119	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
46e19e14	120	vc->gfx.gls = qemu_gl_init_shader();
925a0400 GH	121	if (vc->gfx.ds) {
	122	surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
	123	}
	124	}
	125
	126	graphic_hw_update(dcl->con);
	127
	128	if (vc->gfx.glupdates) {
	129	vc->gfx.glupdates = 0;
	130	gtk_gl_area_set_scanout_mode(vc, false);
	131	gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
	132	}
	133	}
	134
	135	void gd_gl_area_switch(DisplayChangeListener *dcl,
	136	DisplaySurface *surface)
	137	{
	138	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	139	bool resized = true;
	140
	141	trace_gd_switch(vc->label, surface_width(surface), surface_height(surface));
	142
	143	if (vc->gfx.ds &&
	144	surface_width(vc->gfx.ds) == surface_width(surface) &&
	145	surface_height(vc->gfx.ds) == surface_height(surface)) {
	146	resized = false;
	147	}
	148
	149	if (vc->gfx.gls) {
	150	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	151	surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
	152	surface_gl_create_texture(vc->gfx.gls, surface);
	153	}
	154	vc->gfx.ds = surface;
	155
	156	if (resized) {
	157	gd_update_windowsize(vc);
	158	}
	159	}
	160
	161	QEMUGLContext gd_gl_area_create_context(DisplayChangeListener *dcl,
	162	QEMUGLParams *params)
	163	{
	164	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	165	GdkWindow *window;
	166	GdkGLContext *ctx;
	167	GError *err = NULL;
	168
	169	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	170	window = gtk_widget_get_window(vc->gfx.drawing_area);
	171	ctx = gdk_window_create_gl_context(window, &err);
2cd1e3f9 PN	172	if (err) {
	173	g_printerr("Create gdk gl context failed: %s\n", err->message);
	174	g_error_free(err);
	175	return NULL;
	176	}
925a0400 GH	177	gdk_gl_context_set_required_version(ctx,
	178	params->major_ver,
	179	params->minor_ver);
	180	gdk_gl_context_realize(ctx, &err);
2cd1e3f9 PN	181	if (err) {
	182	g_printerr("Realize gdk gl context failed: %s\n", err->message);
	183	g_error_free(err);
	184	g_clear_object(&ctx);
	185	return NULL;
	186	}
925a0400 GH	187	return ctx;
	188	}
	189
	190	void gd_gl_area_destroy_context(DisplayChangeListener *dcl, QEMUGLContext ctx)
	191	{
	192	/* FIXME */
	193	}
	194
f4c36bda GH	195	void gd_gl_area_scanout_texture(DisplayChangeListener *dcl,
	196	uint32_t backing_id,
	197	bool backing_y_0_top,
	198	uint32_t backing_width,
	199	uint32_t backing_height,
	200	uint32_t x, uint32_t y,
	201	uint32_t w, uint32_t h)
925a0400 GH	202	{
	203	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	204
	205	vc->gfx.x = x;
	206	vc->gfx.y = y;
	207	vc->gfx.w = w;
	208	vc->gfx.h = h;
925a0400 GH	209	vc->gfx.y0_top = backing_y_0_top;
	210
	211	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	212
2ff408de	213	if (backing_id == 0 \|\| vc->gfx.w == 0 \|\| vc->gfx.h == 0) {
925a0400 GH	214	gtk_gl_area_set_scanout_mode(vc, false);
	215	return;
	216	}
	217
	218	gtk_gl_area_set_scanout_mode(vc, true);
74083f9c GH	219	egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height,
74083f9c GH	220	backing_id, false);
925a0400 GH	221	}
925a0400 GH	222
568b12fc MAL	223	void gd_gl_area_scanout_disable(DisplayChangeListener *dcl)
	224	{
	225	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	226
	227	gtk_gl_area_set_scanout_mode(vc, false);
	228	}
	229
925a0400 GH	230	void gd_gl_area_scanout_flush(DisplayChangeListener *dcl,
	231	uint32_t x, uint32_t y, uint32_t w, uint32_t h)
	232	{
	233	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	234
65b847d2 VK	235	if (vc->gfx.guest_fb.dmabuf) {
	236	graphic_hw_gl_block(vc->gfx.dcl.con, true);
	237	}
925a0400 GH	238	gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
	239	}
	240
2606519b MAL	241	void gd_gl_area_scanout_dmabuf(DisplayChangeListener *dcl,
	242	QemuDmaBuf *dmabuf)
	243	{
bc6a3565	244	#ifdef CONFIG_GBM
2606519b MAL	245	VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
	246
	247	gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
	248	egl_dmabuf_import_texture(dmabuf);
	249	if (!dmabuf->texture) {
	250	return;
	251	}
	252
	253	gd_gl_area_scanout_texture(dcl, dmabuf->texture,
	254	false, dmabuf->width, dmabuf->height,
	255	0, 0, dmabuf->width, dmabuf->height);
65b847d2 VK	256
	257	if (dmabuf->allow_fences) {
	258	vc->gfx.guest_fb.dmabuf = dmabuf;
	259	}
2606519b MAL	260	#endif
	261	}
	262
925a0400 GH	263	void gtk_gl_area_init(void)
	264	{
	265	display_opengl = 1;
	266	}
	267
925a0400 GH	268	int gd_gl_area_make_current(DisplayChangeListener *dcl,
	269	QEMUGLContext ctx)
	270	{
	271	gdk_gl_context_make_current(ctx);
	272	return 0;
	273	}