/* RetroArch - A frontend for libretro.
* Copyright (C) 2011-2017 - Higor Euripedes
* Copyright (C) 2011-2017 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see .
*/
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include "../../configuration.h"
#include "../../verbosity.h"
#if (OSMESA_MAJOR_VERSION * 1000 + OSMESA_MINOR_VERSION) >= 11002
#define HAVE_OSMESA_CREATE_CONTEXT_ATTRIBS 1
#endif
#if (OSMESA_MAJOR_VERSION * 1000 + OSMESA_MINOR_VERSION) >= 3005
#define HAVE_OSMESA_CREATE_CONTEXT_EXT 1
#endif
#define OSMESA_DEFAULT_FORMAT OSMESA_RGBA
#define OSMESA_BPP 4
#define OSMESA_FIFO_PATH "/tmp/osmesa-retroarch.sock"
/* TODO/FIXME - static globals */
static bool g_osmesa_profile = OSMESA_COMPAT_PROFILE;
static int g_osmesa_major = 2;
static int g_osmesa_minor = 1;
typedef struct gfx_osmesa_ctx_data
{
uint8_t *screen;
int width;
int height;
int pixsize;
OSMesaContext ctx;
int socket;
int client;
} gfx_ctx_osmesa_data_t;
static void osmesa_fifo_open(gfx_ctx_osmesa_data_t *osmesa)
{
struct sockaddr_un saun, fsaun;
osmesa->socket = socket(AF_UNIX, SOCK_STREAM, 0);
osmesa->client = -1;
if (osmesa->socket < 0)
{
perror("[osmesa] socket()");
return;
}
saun.sun_family = AF_UNIX;
strlcpy(saun.sun_path, OSMESA_FIFO_PATH, sizeof(saun.sun_path));
unlink(OSMESA_FIFO_PATH);
if (bind(osmesa->socket,
&saun, sizeof(saun.sun_family) + sizeof(saun.sun_path)) < 0)
{
perror("[osmesa] bind()");
close(osmesa->socket);
return;
}
if (listen(osmesa->socket, 1) < 0)
{
perror("[osmesa] listen()");
close(osmesa->socket);
return;
}
RARCH_ERR("[osmesa] Frame size is %ix%ix%i\n",
osmesa->width, osmesa->height, osmesa->pixsize);
RARCH_ERR("[osmesa] Please connect to unix:%s\n",
OSMESA_FIFO_PATH);
}
static void osmesa_fifo_accept(gfx_ctx_osmesa_data_t *osmesa)
{
int res;
struct pollfd fds;
fds.fd = osmesa->socket;
fds.events = POLLIN;
if (osmesa->client >= 0)
return;
res = poll(&fds, 1, 0);
if (res < 0)
perror("[osmesa] poll() error");
else if (res > 0)
{
osmesa->client = accept(osmesa->socket, NULL, NULL);
RARCH_LOG("[osmesa] Client %i connected.\n", osmesa->client);
}
}
static void osmesa_fifo_write(gfx_ctx_osmesa_data_t *osmesa)
{
int i;
size_t len = osmesa->width * osmesa->pixsize;
if (osmesa->client < 0)
return;
for (i = osmesa->height -1; i >= 0; --i)
{
int res = send(osmesa->client, osmesa->screen + i * len, len, MSG_NOSIGNAL);
if (res < 0)
{
RARCH_LOG("[osmesa] Lost connection to %i: %s\n", osmesa->client, strerror(errno));
close(osmesa->client);
osmesa->client = -1;
break;
}
}
}
static void *osmesa_ctx_init(void *video_driver)
{
#ifdef HAVE_OSMESA_CREATE_CONTEXT_ATTRIBS
const int attribs[] = {
OSMESA_FORMAT, OSMESA_DEFAULT_FORMAT,
OSMESA_DEPTH_BITS, 0,
OSMESA_STENCIL_BITS, 0,
OSMESA_ACCUM_BITS, 0,
OSMESA_PROFILE, g_osmesa_profile,
OSMESA_CONTEXT_MAJOR_VERSION, g_osmesa_major,
OSMESA_CONTEXT_MINOR_VERSION, g_osmesa_minor,
0, 0
};
#endif
gfx_ctx_osmesa_data_t *osmesa = (gfx_ctx_osmesa_data_t*)
calloc(1, sizeof(gfx_ctx_osmesa_data_t));
if (!osmesa)
goto error;
#ifdef HAVE_OSMESA_CREATE_CONTEXT_ATTRIBS
osmesa->ctx = OSMesaCreateContextAttribs(attribs, NULL);
#endif
#ifdef HAVE_OSMESA_CREATE_CONTEXT_EXT
if (!osmesa->ctx)
osmesa->ctx = OSMesaCreateContextExt(OSMESA_DEFAULT_FORMAT, 0, 0, 0, NULL);
#endif
if (!osmesa->ctx)
{
#if defined(HAVE_OSMESA_CREATE_CONTEXT_ATTRIBS) || defined(HAVE_OSMESA_CREATE_CONTEXT_EXT)
RARCH_WARN("[osmesa]: Falling back to standard context creation.\n");
#endif
osmesa->ctx = OSMesaCreateContext(OSMESA_DEFAULT_FORMAT, NULL);
}
if (!osmesa->ctx)
goto error;
osmesa->pixsize = OSMESA_BPP;
return osmesa;
error:
if (osmesa)
free(osmesa);
RARCH_WARN("[omesa]: Failed to initialize the context driver.\n");
return NULL;
}
static void osmesa_ctx_destroy(void *data)
{
gfx_ctx_osmesa_data_t *osmesa = (gfx_ctx_osmesa_data_t*)data;
if (!osmesa)
return;
if (osmesa->socket)
close(osmesa->socket);
unlink("/tmp/retroarch-osmesa.fifo");
free(osmesa->screen);
OSMesaDestroyContext(osmesa->ctx);
free(osmesa);
}
static enum gfx_ctx_api osmesa_ctx_get_api(void *data)
{
return GFX_CTX_OPENGL_API;
}
static bool osmesa_ctx_bind_api(void *data,
enum gfx_ctx_api api, unsigned major,
unsigned minor)
{
if (api != GFX_CTX_OPENGL_API)
return false;
/* Use version 2.1 by default */
g_osmesa_major = 2;
g_osmesa_minor = 1;
g_osmesa_profile = OSMESA_COMPAT_PROFILE;
if (major)
{
g_osmesa_major = major;
g_osmesa_minor = minor;
}
return true;
}
static void osmesa_ctx_swap_interval(void *data, int interval)
{
(void)data;
(void)interval;
}
static bool osmesa_ctx_set_video_mode(void *data,
unsigned width, unsigned height,
bool fullscreen)
{
gfx_ctx_osmesa_data_t *osmesa = (gfx_ctx_osmesa_data_t*)data;
uint8_t *screen = osmesa->screen;
bool size_changed = (width * height) != (osmesa->width * osmesa->height);
if (!osmesa->screen || size_changed)
screen = (uint8_t*)calloc(1, (width * height) * osmesa->pixsize);
if (!screen)
return false;
if (!OSMesaMakeCurrent(osmesa->ctx, screen, GL_UNSIGNED_BYTE, width, height))
{
if (screen != osmesa->screen)
free(screen);
return false;
}
osmesa->width = width;
osmesa->height = height;
if (osmesa->screen && osmesa->screen != screen)
free(osmesa->screen);
osmesa->screen = screen;
if (!osmesa->socket)
osmesa_fifo_open(osmesa);
return true;
}
static void osmesa_ctx_get_video_size(void *data,
unsigned *width, unsigned *height)
{
gfx_ctx_osmesa_data_t *osmesa = (gfx_ctx_osmesa_data_t*)data;
if (!osmesa)
return;
*width = osmesa->width;
*height = osmesa->height;
}
static void osmesa_ctx_check_window(void *data, bool *quit,
bool *resize,unsigned *width,
unsigned *height)
{
gfx_ctx_osmesa_data_t *osmesa = (gfx_ctx_osmesa_data_t*)data;
*width = osmesa->width;
*height = osmesa->height;
*resize = false;
*quit = false;
}
static bool osmesa_ctx_has_focus(void *data) { return true; }
static bool osmesa_ctx_suppress_screensaver(void *data, bool enable) { return false; }
static void osmesa_ctx_swap_buffers(void *data)
{
gfx_ctx_osmesa_data_t *osmesa = (gfx_ctx_osmesa_data_t*)data;
osmesa_fifo_accept(osmesa);
osmesa_fifo_write(osmesa);
#if 0
write(osmesa->socket, osmesa->screen, osmesa->width * osmesa->height * osmesa->pixsize);
#endif
}
static void osmesa_ctx_input_driver(void *data,
const char *name,
input_driver_t **input, void **input_data)
{
*input = NULL;
*input_data = NULL;
}
static gfx_ctx_proc_t osmesa_ctx_get_proc_address(const char *name)
{
return (gfx_ctx_proc_t)OSMesaGetProcAddress(name);
}
static uint32_t osmesa_ctx_get_flags(void *data)
{
uint32_t flags = 0;
BIT32_SET(flags, GFX_CTX_FLAGS_SHADERS_GLSL);
return flags;
}
static void osmesa_ctx_show_mouse(void *data, bool state) { }
static void osmesa_ctx_set_flags(void *data, uint32_t flags) { }
const gfx_ctx_driver_t gfx_ctx_osmesa =
{
osmesa_ctx_init,
osmesa_ctx_destroy,
osmesa_ctx_get_api,
osmesa_ctx_bind_api,
osmesa_ctx_swap_interval,
osmesa_ctx_set_video_mode,
osmesa_ctx_get_video_size,
NULL, /* get_refresh_rate */
NULL, /* get_video_output_size */
NULL, /* get_video_output_prev */
NULL, /* get_video_output_next */
NULL, /* get_metrics */
NULL, /* translate_aspect */
NULL, /* update_title */
osmesa_ctx_check_window,
NULL, /* set_resize */
osmesa_ctx_has_focus,
osmesa_ctx_suppress_screensaver,
true, /* has_windowed */
osmesa_ctx_swap_buffers,
osmesa_ctx_input_driver,
osmesa_ctx_get_proc_address,
NULL,
NULL,
osmesa_ctx_show_mouse,
"osmesa",
osmesa_ctx_get_flags,
osmesa_ctx_set_flags,
NULL, /* bind_hw_render */
NULL,
NULL
};