[mirror_qemu.git] / ui / sdl2-gl.c

/*
 * QEMU SDL display driver -- opengl support
 *
 * Copyright (c) 2014 Red Hat
 *
 * Authors:
 *     Gerd Hoffmann <kraxel@redhat.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include "qemu/osdep.h"
#include "qemu-common.h"
#include "ui/console.h"
#include "ui/input.h"
#include "ui/sdl2.h"
#include "sysemu/sysemu.h"

static void sdl2_set_scanout_mode(struct sdl2_console *scon, bool scanout)
{
    if (scon->scanout_mode == scanout) {
        return;
    }

    scon->scanout_mode = scanout;
    if (!scon->scanout_mode) {
        egl_fb_destroy(&scon->guest_fb);
        if (scon->surface) {
            surface_gl_destroy_texture(scon->gls, scon->surface);
            surface_gl_create_texture(scon->gls, scon->surface);
        }
    }
}

static void sdl2_gl_render_surface(struct sdl2_console *scon)
{
    int ww, wh;

    SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
    sdl2_set_scanout_mode(scon, false);

    SDL_GetWindowSize(scon->real_window, &ww, &wh);
    surface_gl_setup_viewport(scon->gls, scon->surface, ww, wh);

    surface_gl_render_texture(scon->gls, scon->surface);
    SDL_GL_SwapWindow(scon->real_window);
}

void sdl2_gl_update(DisplayChangeListener *dcl,
                    int x, int y, int w, int h)
{
    struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);

    assert(scon->opengl);

    SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
    surface_gl_update_texture(scon->gls, scon->surface, x, y, w, h);
    scon->updates++;
}

void sdl2_gl_switch(DisplayChangeListener *dcl,
                    DisplaySurface *new_surface)
{
    struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
    DisplaySurface *old_surface = scon->surface;

    assert(scon->opengl);

    SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
    surface_gl_destroy_texture(scon->gls, scon->surface);

    scon->surface = new_surface;

    if (!new_surface) {
        qemu_gl_fini_shader(scon->gls);
        scon->gls = NULL;
        sdl2_window_destroy(scon);
        return;
    }

    if (!scon->real_window) {
        sdl2_window_create(scon);
        scon->gls = qemu_gl_init_shader();
    } else if (old_surface &&
               ((surface_width(old_surface)  != surface_width(new_surface)) ||
                (surface_height(old_surface) != surface_height(new_surface)))) {
        sdl2_window_resize(scon);
    }

    surface_gl_create_texture(scon->gls, scon->surface);
}

void sdl2_gl_refresh(DisplayChangeListener *dcl)
{
    struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);

    assert(scon->opengl);

    graphic_hw_update(dcl->con);
    if (scon->updates && scon->surface) {
        scon->updates = 0;
        sdl2_gl_render_surface(scon);
    }
    sdl2_poll_events(scon);
}

void sdl2_gl_redraw(struct sdl2_console *scon)
{
    assert(scon->opengl);

    if (scon->scanout_mode) {
        /* sdl2_gl_scanout_flush actually only care about
         * the first argument. */
        return sdl2_gl_scanout_flush(&scon->dcl, 0, 0, 0, 0);
    }
    if (scon->surface) {
        sdl2_gl_render_surface(scon);
    }
}

QEMUGLContext sdl2_gl_create_context(DisplayChangeListener *dcl,
                                     QEMUGLParams *params)
{
    struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
    SDL_GLContext ctx;

    assert(scon->opengl);

    SDL_GL_MakeCurrent(scon->real_window, scon->winctx);

    SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1);
    if (scon->opts->gl == DISPLAYGL_MODE_ON ||
        scon->opts->gl == DISPLAYGL_MODE_CORE) {
        SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,
                            SDL_GL_CONTEXT_PROFILE_CORE);
    } else if (scon->opts->gl == DISPLAYGL_MODE_ES) {
        SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,
                            SDL_GL_CONTEXT_PROFILE_ES);
    }
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, params->major_ver);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, params->minor_ver);

    ctx = SDL_GL_CreateContext(scon->real_window);

    /* If SDL fail to create a GL context and we use the "on" flag,
     * then try to fallback to GLES.
     */
    if (!ctx && scon->opts->gl == DISPLAYGL_MODE_ON) {
        SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,
                            SDL_GL_CONTEXT_PROFILE_ES);
        ctx = SDL_GL_CreateContext(scon->real_window);
    }
    return (QEMUGLContext)ctx;
}

void sdl2_gl_destroy_context(DisplayChangeListener *dcl, QEMUGLContext ctx)
{
    SDL_GLContext sdlctx = (SDL_GLContext)ctx;

    SDL_GL_DeleteContext(sdlctx);
}

int sdl2_gl_make_context_current(DisplayChangeListener *dcl,
                                 QEMUGLContext ctx)
{
    struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
    SDL_GLContext sdlctx = (SDL_GLContext)ctx;

    assert(scon->opengl);

    return SDL_GL_MakeCurrent(scon->real_window, sdlctx);
}

QEMUGLContext sdl2_gl_get_current_context(DisplayChangeListener *dcl)
{
    SDL_GLContext sdlctx;

    sdlctx = SDL_GL_GetCurrentContext();
    return (QEMUGLContext)sdlctx;
}

void sdl2_gl_scanout_disable(DisplayChangeListener *dcl)
{
    struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);

    assert(scon->opengl);
    scon->w = 0;
    scon->h = 0;
    sdl2_set_scanout_mode(scon, false);
}

void sdl2_gl_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)
{
    struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);

    assert(scon->opengl);
    scon->x = x;
    scon->y = y;
    scon->w = w;
    scon->h = h;
    scon->y0_top = backing_y_0_top;

    SDL_GL_MakeCurrent(scon->real_window, scon->winctx);

    sdl2_set_scanout_mode(scon, true);
    egl_fb_setup_for_tex(&scon->guest_fb, backing_width, backing_height,
                         backing_id, false);
}

void sdl2_gl_scanout_flush(DisplayChangeListener *dcl,
                           uint32_t x, uint32_t y, uint32_t w, uint32_t h)
{
    struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
    int ww, wh;

    assert(scon->opengl);
    if (!scon->scanout_mode) {
        return;
    }
    if (!scon->guest_fb.framebuffer) {
        return;
    }

    SDL_GL_MakeCurrent(scon->real_window, scon->winctx);

    SDL_GetWindowSize(scon->real_window, &ww, &wh);
    egl_fb_setup_default(&scon->win_fb, ww, wh);
    egl_fb_blit(&scon->win_fb, &scon->guest_fb, !scon->y0_top);

    SDL_GL_SwapWindow(scon->real_window);
}
Commit	Line	Data
0b71a5d5 GH	1	/*
	2	* QEMU SDL display driver -- opengl support
	3	*
	4	* Copyright (c) 2014 Red Hat
	5	*
	6	* Authors:
	7	* Gerd Hoffmann <kraxel@redhat.com>
	8	*
	9	* Permission is hereby granted, free of charge, to any person obtaining a copy
	10	* of this software and associated documentation files (the "Software"), to deal
	11	* in the Software without restriction, including without limitation the rights
	12	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	13	* copies of the Software, and to permit persons to whom the Software is
	14	* furnished to do so, subject to the following conditions:
	15	*
	16	* The above copyright notice and this permission notice shall be included in
	17	* all copies or substantial portions of the Software.
	18	*
	19	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	20	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	21	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	22	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	23	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	24	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	25	* THE SOFTWARE.
	26	*/
	27
e16f4c87	28	#include "qemu/osdep.h"
0b71a5d5 GH	29	#include "qemu-common.h"
	30	#include "ui/console.h"
	31	#include "ui/input.h"
	32	#include "ui/sdl2.h"
	33	#include "sysemu/sysemu.h"
	34
cb47dc9a GH	35	static void sdl2_set_scanout_mode(struct sdl2_console *scon, bool scanout)
	36	{
	37	if (scon->scanout_mode == scanout) {
	38	return;
	39	}
	40
	41	scon->scanout_mode = scanout;
	42	if (!scon->scanout_mode) {
371c4ef6	43	egl_fb_destroy(&scon->guest_fb);
cb47dc9a GH	44	if (scon->surface) {
	45	surface_gl_destroy_texture(scon->gls, scon->surface);
	46	surface_gl_create_texture(scon->gls, scon->surface);
	47	}
	48	}
	49	}
	50
0b71a5d5 GH	51	static void sdl2_gl_render_surface(struct sdl2_console *scon)
	52	{
	53	int ww, wh;
	54
	55	SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
cb47dc9a	56	sdl2_set_scanout_mode(scon, false);
0b71a5d5 GH	57
	58	SDL_GetWindowSize(scon->real_window, &ww, &wh);
	59	surface_gl_setup_viewport(scon->gls, scon->surface, ww, wh);
	60
	61	surface_gl_render_texture(scon->gls, scon->surface);
	62	SDL_GL_SwapWindow(scon->real_window);
	63	}
	64
	65	void sdl2_gl_update(DisplayChangeListener *dcl,
	66	int x, int y, int w, int h)
	67	{
	68	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	69
	70	assert(scon->opengl);
	71
	72	SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
	73	surface_gl_update_texture(scon->gls, scon->surface, x, y, w, h);
	74	scon->updates++;
	75	}
	76
	77	void sdl2_gl_switch(DisplayChangeListener *dcl,
	78	DisplaySurface *new_surface)
	79	{
	80	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	81	DisplaySurface *old_surface = scon->surface;
	82
	83	assert(scon->opengl);
	84
	85	SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
	86	surface_gl_destroy_texture(scon->gls, scon->surface);
	87
	88	scon->surface = new_surface;
	89
	90	if (!new_surface) {
46e19e14	91	qemu_gl_fini_shader(scon->gls);
0b71a5d5 GH	92	scon->gls = NULL;
	93	sdl2_window_destroy(scon);
	94	return;
	95	}
	96
	97	if (!scon->real_window) {
	98	sdl2_window_create(scon);
46e19e14	99	scon->gls = qemu_gl_init_shader();
0b71a5d5 GH	100	} else if (old_surface &&
	101	((surface_width(old_surface) != surface_width(new_surface)) \|\|
	102	(surface_height(old_surface) != surface_height(new_surface)))) {
	103	sdl2_window_resize(scon);
	104	}
	105
	106	surface_gl_create_texture(scon->gls, scon->surface);
	107	}
	108
	109	void sdl2_gl_refresh(DisplayChangeListener *dcl)
	110	{
	111	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	112
	113	assert(scon->opengl);
	114
	115	graphic_hw_update(dcl->con);
	116	if (scon->updates && scon->surface) {
	117	scon->updates = 0;
	118	sdl2_gl_render_surface(scon);
	119	}
	120	sdl2_poll_events(scon);
	121	}
	122
	123	void sdl2_gl_redraw(struct sdl2_console *scon)
	124	{
	125	assert(scon->opengl);
	126
77f60fb4 TW	127	if (scon->scanout_mode) {
	128	/* sdl2_gl_scanout_flush actually only care about
	129	* the first argument. */
	130	return sdl2_gl_scanout_flush(&scon->dcl, 0, 0, 0, 0);
	131	}
0b71a5d5 GH	132	if (scon->surface) {
	133	sdl2_gl_render_surface(scon);
	134	}
	135	}
cb47dc9a GH	136
	137	QEMUGLContext sdl2_gl_create_context(DisplayChangeListener *dcl,
	138	QEMUGLParams *params)
	139	{
	140	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	141	SDL_GLContext ctx;
	142
	143	assert(scon->opengl);
	144
	145	SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
	146
	147	SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1);
4867e47c ET	148	if (scon->opts->gl == DISPLAYGL_MODE_ON \|\|
	149	scon->opts->gl == DISPLAYGL_MODE_CORE) {
	150	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,
	151	SDL_GL_CONTEXT_PROFILE_CORE);
	152	} else if (scon->opts->gl == DISPLAYGL_MODE_ES) {
	153	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,
	154	SDL_GL_CONTEXT_PROFILE_ES);
	155	}
cb47dc9a GH	156	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, params->major_ver);
	157	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, params->minor_ver);
	158
	159	ctx = SDL_GL_CreateContext(scon->real_window);
4867e47c ET	160
	161	/* If SDL fail to create a GL context and we use the "on" flag,
	162	* then try to fallback to GLES.
	163	*/
	164	if (!ctx && scon->opts->gl == DISPLAYGL_MODE_ON) {
	165	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,
	166	SDL_GL_CONTEXT_PROFILE_ES);
	167	ctx = SDL_GL_CreateContext(scon->real_window);
	168	}
cb47dc9a GH	169	return (QEMUGLContext)ctx;
	170	}
	171
	172	void sdl2_gl_destroy_context(DisplayChangeListener *dcl, QEMUGLContext ctx)
	173	{
	174	SDL_GLContext sdlctx = (SDL_GLContext)ctx;
	175
	176	SDL_GL_DeleteContext(sdlctx);
	177	}
	178
	179	int sdl2_gl_make_context_current(DisplayChangeListener *dcl,
	180	QEMUGLContext ctx)
	181	{
	182	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	183	SDL_GLContext sdlctx = (SDL_GLContext)ctx;
	184
	185	assert(scon->opengl);
	186
	187	return SDL_GL_MakeCurrent(scon->real_window, sdlctx);
	188	}
	189
	190	QEMUGLContext sdl2_gl_get_current_context(DisplayChangeListener *dcl)
	191	{
	192	SDL_GLContext sdlctx;
	193
	194	sdlctx = SDL_GL_GetCurrentContext();
	195	return (QEMUGLContext)sdlctx;
	196	}
	197
db6cdfbe GH	198	void sdl2_gl_scanout_disable(DisplayChangeListener *dcl)
	199	{
	200	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	201
	202	assert(scon->opengl);
	203	scon->w = 0;
	204	scon->h = 0;
db6cdfbe GH	205	sdl2_set_scanout_mode(scon, false);
	206	}
	207
f4c36bda GH	208	void sdl2_gl_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)
cb47dc9a GH	215	{
	216	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	217
	218	assert(scon->opengl);
	219	scon->x = x;
	220	scon->y = y;
	221	scon->w = w;
	222	scon->h = h;
cb47dc9a GH	223	scon->y0_top = backing_y_0_top;
	224
	225	SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
	226
cb47dc9a	227	sdl2_set_scanout_mode(scon, true);
74083f9c GH	228	egl_fb_setup_for_tex(&scon->guest_fb, backing_width, backing_height,
74083f9c GH	229	backing_id, false);
cb47dc9a GH	230	}
	231
	232	void sdl2_gl_scanout_flush(DisplayChangeListener *dcl,
	233	uint32_t x, uint32_t y, uint32_t w, uint32_t h)
	234	{
	235	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
371c4ef6	236	int ww, wh;
cb47dc9a GH	237
	238	assert(scon->opengl);
	239	if (!scon->scanout_mode) {
	240	return;
	241	}
371c4ef6	242	if (!scon->guest_fb.framebuffer) {
cb47dc9a GH	243	return;
	244	}
	245
	246	SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
	247
cb47dc9a	248	SDL_GetWindowSize(scon->real_window, &ww, &wh);
371c4ef6 GH	249	egl_fb_setup_default(&scon->win_fb, ww, wh);
371c4ef6 GH	250	egl_fb_blit(&scon->win_fb, &scon->guest_fb, !scon->y0_top);
cb47dc9a GH	251
	252	SDL_GL_SwapWindow(scon->real_window);
	253	}