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

/*
 * QEMU SDL display driver -- opengl support
 *
 * Copyright (c) 2014 Red Hat
 *
 * Authors:
 *     Gerd Hoffmann <[email protected]>
 *
 * 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->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);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,
                        SDL_GL_CONTEXT_PROFILE_CORE);
    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);
    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 <[email protected]>
	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
	127	if (scon->surface) {
	128	sdl2_gl_render_surface(scon);
	129	}
	130	}
cb47dc9a GH	131
	132	QEMUGLContext sdl2_gl_create_context(DisplayChangeListener *dcl,
	133	QEMUGLParams *params)
	134	{
	135	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	136	SDL_GLContext ctx;
	137
	138	assert(scon->opengl);
	139
	140	SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
	141
	142	SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1);
	143	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,
	144	SDL_GL_CONTEXT_PROFILE_CORE);
	145	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, params->major_ver);
	146	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, params->minor_ver);
	147
	148	ctx = SDL_GL_CreateContext(scon->real_window);
	149	return (QEMUGLContext)ctx;
	150	}
	151
	152	void sdl2_gl_destroy_context(DisplayChangeListener *dcl, QEMUGLContext ctx)
	153	{
	154	SDL_GLContext sdlctx = (SDL_GLContext)ctx;
	155
	156	SDL_GL_DeleteContext(sdlctx);
	157	}
	158
	159	int sdl2_gl_make_context_current(DisplayChangeListener *dcl,
	160	QEMUGLContext ctx)
	161	{
	162	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	163	SDL_GLContext sdlctx = (SDL_GLContext)ctx;
	164
	165	assert(scon->opengl);
	166
	167	return SDL_GL_MakeCurrent(scon->real_window, sdlctx);
	168	}
	169
	170	QEMUGLContext sdl2_gl_get_current_context(DisplayChangeListener *dcl)
	171	{
	172	SDL_GLContext sdlctx;
	173
	174	sdlctx = SDL_GL_GetCurrentContext();
	175	return (QEMUGLContext)sdlctx;
	176	}
	177
db6cdfbe GH	178	void sdl2_gl_scanout_disable(DisplayChangeListener *dcl)
	179	{
	180	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	181
	182	assert(scon->opengl);
	183	scon->w = 0;
	184	scon->h = 0;
db6cdfbe GH	185	sdl2_set_scanout_mode(scon, false);
	186	}
	187
f4c36bda GH	188	void sdl2_gl_scanout_texture(DisplayChangeListener *dcl,
	189	uint32_t backing_id,
	190	bool backing_y_0_top,
	191	uint32_t backing_width,
	192	uint32_t backing_height,
	193	uint32_t x, uint32_t y,
	194	uint32_t w, uint32_t h)
cb47dc9a GH	195	{
	196	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	197
	198	assert(scon->opengl);
	199	scon->x = x;
	200	scon->y = y;
	201	scon->w = w;
	202	scon->h = h;
cb47dc9a GH	203	scon->y0_top = backing_y_0_top;
	204
	205	SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
	206
cb47dc9a	207	sdl2_set_scanout_mode(scon, true);
74083f9c GH	208	egl_fb_setup_for_tex(&scon->guest_fb, backing_width, backing_height,
74083f9c GH	209	backing_id, false);
cb47dc9a GH	210	}
	211
	212	void sdl2_gl_scanout_flush(DisplayChangeListener *dcl,
	213	uint32_t x, uint32_t y, uint32_t w, uint32_t h)
	214	{
	215	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
371c4ef6	216	int ww, wh;
cb47dc9a GH	217
	218	assert(scon->opengl);
	219	if (!scon->scanout_mode) {
	220	return;
	221	}
371c4ef6	222	if (!scon->guest_fb.framebuffer) {
cb47dc9a GH	223	return;
	224	}
	225
	226	SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
	227
cb47dc9a	228	SDL_GetWindowSize(scon->real_window, &ww, &wh);
371c4ef6 GH	229	egl_fb_setup_default(&scon->win_fb, ww, wh);
371c4ef6 GH	230	egl_fb_blit(&scon->win_fb, &scon->guest_fb, !scon->y0_top);
cb47dc9a GH	231
	232	SDL_GL_SwapWindow(scon->real_window);
	233	}