[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"

#include <epoxy/gl.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	#include <epoxy/gl.h>
	36
	37	static void sdl2_set_scanout_mode(struct sdl2_console *scon, bool scanout)
	38	{
	39	if (scon->scanout_mode == scanout) {
	40	return;
	41	}
	42
	43	scon->scanout_mode = scanout;
	44	if (!scon->scanout_mode) {
371c4ef6	45	egl_fb_destroy(&scon->guest_fb);
cb47dc9a GH	46	if (scon->surface) {
	47	surface_gl_destroy_texture(scon->gls, scon->surface);
	48	surface_gl_create_texture(scon->gls, scon->surface);
	49	}
	50	}
	51	}
	52
0b71a5d5 GH	53	static void sdl2_gl_render_surface(struct sdl2_console *scon)
	54	{
	55	int ww, wh;
	56
	57	SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
cb47dc9a	58	sdl2_set_scanout_mode(scon, false);
0b71a5d5 GH	59
	60	SDL_GetWindowSize(scon->real_window, &ww, &wh);
	61	surface_gl_setup_viewport(scon->gls, scon->surface, ww, wh);
	62
	63	surface_gl_render_texture(scon->gls, scon->surface);
	64	SDL_GL_SwapWindow(scon->real_window);
	65	}
	66
	67	void sdl2_gl_update(DisplayChangeListener *dcl,
	68	int x, int y, int w, int h)
	69	{
	70	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	71
	72	assert(scon->opengl);
	73
	74	SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
	75	surface_gl_update_texture(scon->gls, scon->surface, x, y, w, h);
	76	scon->updates++;
	77	}
	78
	79	void sdl2_gl_switch(DisplayChangeListener *dcl,
	80	DisplaySurface *new_surface)
	81	{
	82	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	83	DisplaySurface *old_surface = scon->surface;
	84
	85	assert(scon->opengl);
	86
	87	SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
	88	surface_gl_destroy_texture(scon->gls, scon->surface);
	89
	90	scon->surface = new_surface;
	91
	92	if (!new_surface) {
46e19e14	93	qemu_gl_fini_shader(scon->gls);
0b71a5d5 GH	94	scon->gls = NULL;
	95	sdl2_window_destroy(scon);
	96	return;
	97	}
	98
	99	if (!scon->real_window) {
	100	sdl2_window_create(scon);
46e19e14	101	scon->gls = qemu_gl_init_shader();
0b71a5d5 GH	102	} else if (old_surface &&
	103	((surface_width(old_surface) != surface_width(new_surface)) \|\|
	104	(surface_height(old_surface) != surface_height(new_surface)))) {
	105	sdl2_window_resize(scon);
	106	}
	107
	108	surface_gl_create_texture(scon->gls, scon->surface);
	109	}
	110
	111	void sdl2_gl_refresh(DisplayChangeListener *dcl)
	112	{
	113	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	114
	115	assert(scon->opengl);
	116
	117	graphic_hw_update(dcl->con);
	118	if (scon->updates && scon->surface) {
	119	scon->updates = 0;
	120	sdl2_gl_render_surface(scon);
	121	}
	122	sdl2_poll_events(scon);
	123	}
	124
	125	void sdl2_gl_redraw(struct sdl2_console *scon)
	126	{
	127	assert(scon->opengl);
	128
	129	if (scon->surface) {
	130	sdl2_gl_render_surface(scon);
	131	}
	132	}
cb47dc9a GH	133
	134	QEMUGLContext sdl2_gl_create_context(DisplayChangeListener *dcl,
	135	QEMUGLParams *params)
	136	{
	137	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	138	SDL_GLContext ctx;
	139
	140	assert(scon->opengl);
	141
	142	SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
	143
	144	SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1);
	145	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,
	146	SDL_GL_CONTEXT_PROFILE_CORE);
	147	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, params->major_ver);
	148	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, params->minor_ver);
	149
	150	ctx = SDL_GL_CreateContext(scon->real_window);
	151	return (QEMUGLContext)ctx;
	152	}
	153
	154	void sdl2_gl_destroy_context(DisplayChangeListener *dcl, QEMUGLContext ctx)
	155	{
	156	SDL_GLContext sdlctx = (SDL_GLContext)ctx;
	157
	158	SDL_GL_DeleteContext(sdlctx);
	159	}
	160
	161	int sdl2_gl_make_context_current(DisplayChangeListener *dcl,
	162	QEMUGLContext ctx)
	163	{
	164	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	165	SDL_GLContext sdlctx = (SDL_GLContext)ctx;
	166
	167	assert(scon->opengl);
	168
	169	return SDL_GL_MakeCurrent(scon->real_window, sdlctx);
	170	}
	171
	172	QEMUGLContext sdl2_gl_get_current_context(DisplayChangeListener *dcl)
	173	{
	174	SDL_GLContext sdlctx;
	175
	176	sdlctx = SDL_GL_GetCurrentContext();
	177	return (QEMUGLContext)sdlctx;
	178	}
	179
db6cdfbe GH	180	void sdl2_gl_scanout_disable(DisplayChangeListener *dcl)
	181	{
	182	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	183
	184	assert(scon->opengl);
	185	scon->w = 0;
	186	scon->h = 0;
db6cdfbe GH	187	sdl2_set_scanout_mode(scon, false);
	188	}
	189
f4c36bda GH	190	void sdl2_gl_scanout_texture(DisplayChangeListener *dcl,
	191	uint32_t backing_id,
	192	bool backing_y_0_top,
	193	uint32_t backing_width,
	194	uint32_t backing_height,
	195	uint32_t x, uint32_t y,
	196	uint32_t w, uint32_t h)
cb47dc9a GH	197	{
	198	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
	199
	200	assert(scon->opengl);
	201	scon->x = x;
	202	scon->y = y;
	203	scon->w = w;
	204	scon->h = h;
cb47dc9a GH	205	scon->y0_top = backing_y_0_top;
	206
	207	SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
	208
cb47dc9a	209	sdl2_set_scanout_mode(scon, true);
74083f9c GH	210	egl_fb_setup_for_tex(&scon->guest_fb, backing_width, backing_height,
74083f9c GH	211	backing_id, false);
cb47dc9a GH	212	}
	213
	214	void sdl2_gl_scanout_flush(DisplayChangeListener *dcl,
	215	uint32_t x, uint32_t y, uint32_t w, uint32_t h)
	216	{
	217	struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
371c4ef6	218	int ww, wh;
cb47dc9a GH	219
	220	assert(scon->opengl);
	221	if (!scon->scanout_mode) {
	222	return;
	223	}
371c4ef6	224	if (!scon->guest_fb.framebuffer) {
cb47dc9a GH	225	return;
	226	}
	227
	228	SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
	229
cb47dc9a	230	SDL_GetWindowSize(scon->real_window, &ww, &wh);
371c4ef6 GH	231	egl_fb_setup_default(&scon->win_fb, ww, wh);
371c4ef6 GH	232	egl_fb_blit(&scon->win_fb, &scon->guest_fb, !scon->y0_top);
cb47dc9a GH	233
	234	SDL_GL_SwapWindow(scon->real_window);
	235	}