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RetroArch/gfx/drivers_context/glx_ctx.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2015 - 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 <http://www.gnu.org/licenses/>.
*/
#include "../../driver.h"
#include "../../runloop.h"
#include "../gl_common.h"
#include "../video_monitor.h"
#include "x11_common.h"
#include <signal.h>
#include <stdint.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <GL/glx.h>
static int (*g_pglSwapInterval)(int);
static int (*g_pglSwapIntervalSGI)(int);
static void (*g_pglSwapIntervalEXT)(Display*, GLXDrawable, int);
typedef struct gfx_ctx_glx_data
{
bool g_has_focus;
bool g_true_full;
bool g_use_hw_ctx;
bool g_core;
bool g_debug;
bool g_should_reset_mode;
bool g_is_double;
Display *g_dpy;
Window g_win;
GLXWindow g_glx_win;
Colormap g_cmap;
unsigned g_screen;
unsigned g_interval;
XIM g_xim;
XIC g_xic;
GLXContext g_ctx, g_hw_ctx;
GLXFBConfig g_fbc;
XF86VidModeModeInfo g_desktop_mode;
} gfx_ctx_glx_data_t;
static Atom g_quit_atom;
static volatile sig_atomic_t g_quit;
static unsigned g_major;
static unsigned g_minor;
static PFNGLXCREATECONTEXTATTRIBSARBPROC glx_create_context_attribs;
static void glx_sighandler(int sig)
{
(void)sig;
g_quit = 1;
}
static Bool glx_wait_notify(Display *d, XEvent *e, char *arg)
{
driver_t *driver = driver_get_ptr();
gfx_ctx_glx_data_t *glx = (gfx_ctx_glx_data_t*)driver->video_context_data;
(void)d;
(void)e;
if (!glx)
return false;
return (e->type == MapNotify) && (e->xmap.window == glx->g_win);
}
static int glx_nul_handler(Display *dpy, XErrorEvent *event)
{
(void)dpy;
(void)event;
return 0;
}
static void gfx_ctx_glx_get_video_size(void *data,
unsigned *width, unsigned *height);
static void gfx_ctx_glx_destroy(void *data);
static void gfx_ctx_glx_swap_interval(void *data, unsigned interval)
{
driver_t *driver = driver_get_ptr();
gfx_ctx_glx_data_t *glx = (gfx_ctx_glx_data_t*)driver->video_context_data;
glx->g_interval = interval;
if (g_pglSwapIntervalEXT)
{
RARCH_LOG("[GLX]: glXSwapIntervalEXT(%u)\n", glx->g_interval);
g_pglSwapIntervalEXT(glx->g_dpy, glx->g_glx_win, glx->g_interval);
}
else if (g_pglSwapInterval)
{
RARCH_LOG("[GLX]: glXSwapInterval(%u)\n", glx->g_interval);
if (g_pglSwapInterval(glx->g_interval) != 0)
RARCH_WARN("[GLX]: glXSwapInterval() failed.\n");
}
else if (g_pglSwapIntervalSGI)
{
RARCH_LOG("[GLX]: glXSwapIntervalSGI(%u)\n", glx->g_interval);
if (g_pglSwapIntervalSGI(glx->g_interval) != 0)
RARCH_WARN("[GLX]: glXSwapIntervalSGI() failed.\n");
}
}
void x_input_poll_wheel(void *data, XButtonEvent *event, bool latch);
static void gfx_ctx_glx_check_window(void *data, bool *quit,
bool *resize, unsigned *width, unsigned *height, unsigned frame_count)
{
XEvent event;
driver_t *driver = driver_get_ptr();
gfx_ctx_glx_data_t *glx = (gfx_ctx_glx_data_t*)driver->video_context_data;
unsigned new_width = *width, new_height = *height;
(void)frame_count;
gfx_ctx_glx_get_video_size(data, &new_width, &new_height);
if (new_width != *width || new_height != *height)
{
*resize = true;
*width = new_width;
*height = new_height;
}
while (XPending(glx->g_dpy))
{
bool filter;
XNextEvent(glx->g_dpy, &event);
filter = XFilterEvent(&event, glx->g_win);
switch (event.type)
{
case ClientMessage:
if (event.xclient.window == glx->g_win &&
(Atom)event.xclient.data.l[0] == g_quit_atom)
g_quit = true;
break;
case DestroyNotify:
if (event.xdestroywindow.window == glx->g_win)
g_quit = true;
break;
case MapNotify:
if (event.xmap.window == glx->g_win)
glx->g_has_focus = true;
break;
case UnmapNotify:
if (event.xunmap.window == glx->g_win)
glx->g_has_focus = false;
break;
case ButtonPress:
x_input_poll_wheel(driver->input_data, &event.xbutton, true);
break;
case ButtonRelease:
break;
case KeyPress:
case KeyRelease:
x11_handle_key_event(&event, glx->g_xic, filter);
break;
}
}
*quit = g_quit;
}
static void gfx_ctx_glx_swap_buffers(void *data)
{
driver_t *driver = driver_get_ptr();
gfx_ctx_glx_data_t *glx = (gfx_ctx_glx_data_t*)driver->video_context_data;
(void)data;
if (glx->g_is_double)
glXSwapBuffers(glx->g_dpy, glx->g_glx_win);
}
static void gfx_ctx_glx_set_resize(void *data,
unsigned width, unsigned height)
{
(void)data;
(void)width;
(void)height;
}
static void gfx_ctx_glx_update_window_title(void *data)
{
char buf[128], buf_fps[128];
driver_t *driver = driver_get_ptr();
gfx_ctx_glx_data_t *glx = (gfx_ctx_glx_data_t*)driver->video_context_data;
if (video_monitor_get_fps(buf, sizeof(buf),
buf_fps, sizeof(buf_fps)))
XStoreName(glx->g_dpy, glx->g_win, buf);
if (g_settings.fps_show)
rarch_main_msg_queue_push(buf_fps, 1, 1, false);
}
static void gfx_ctx_glx_get_video_size(void *data,
unsigned *width, unsigned *height)
{
driver_t *driver = driver_get_ptr();
gfx_ctx_glx_data_t *glx = (gfx_ctx_glx_data_t*)driver->video_context_data;
if (!glx)
return;
(void)data;
if (!glx->g_dpy || glx->g_win == None)
{
Display *dpy = (Display*)XOpenDisplay(NULL);
*width = 0;
*height = 0;
if (dpy)
{
int screen = DefaultScreen(dpy);
*width = DisplayWidth(dpy, screen);
*height = DisplayHeight(dpy, screen);
XCloseDisplay(dpy);
}
}
else
{
XWindowAttributes target;
XGetWindowAttributes(glx->g_dpy, glx->g_win, &target);
*width = target.width;
*height = target.height;
}
}
static void ctx_glx_destroy_resources(gfx_ctx_glx_data_t *glx)
{
driver_t *driver = driver_get_ptr();
if (!glx)
return;
x11_destroy_input_context(&glx->g_xim, &glx->g_xic);
if (glx->g_dpy && glx->g_ctx)
{
glFinish();
glXMakeContextCurrent(glx->g_dpy, None, None, NULL);
if (!driver->video_cache_context)
{
if (glx->g_hw_ctx)
glXDestroyContext(glx->g_dpy, glx->g_hw_ctx);
glXDestroyContext(glx->g_dpy, glx->g_ctx);
glx->g_ctx = NULL;
glx->g_hw_ctx = NULL;
}
}
if (glx->g_win)
{
glXDestroyWindow(glx->g_dpy, glx->g_glx_win);
glx->g_glx_win = 0;
/* Save last used monitor for later. */
#ifdef HAVE_XINERAMA
XWindowAttributes target;
Window child;
int x = 0, y = 0;
XGetWindowAttributes(glx->g_dpy, glx->g_win, &target);
XTranslateCoordinates(glx->g_dpy, glx->g_win, DefaultRootWindow(glx->g_dpy),
target.x, target.y, &x, &y, &child);
glx->g_screen = x11_get_xinerama_monitor(glx->g_dpy, x, y,
target.width, target.height);
RARCH_LOG("[GLX]: Saved monitor #%u.\n", glx->g_screen);
#endif
XUnmapWindow(glx->g_dpy, glx->g_win);
XDestroyWindow(glx->g_dpy, glx->g_win);
glx->g_win = None;
}
if (glx->g_cmap)
{
XFreeColormap(glx->g_dpy, glx->g_cmap);
glx->g_cmap = None;
}
if (glx->g_should_reset_mode)
{
x11_exit_fullscreen(glx->g_dpy, &glx->g_desktop_mode);
glx->g_should_reset_mode = false;
}
if (!driver->video_cache_context && glx->g_dpy)
{
XCloseDisplay(glx->g_dpy);
glx->g_dpy = NULL;
}
g_pglSwapInterval = NULL;
g_pglSwapIntervalSGI = NULL;
g_pglSwapIntervalEXT = NULL;
g_major = g_minor = 0;
glx->g_core = false;
}
static bool gfx_ctx_glx_init(void *data)
{
static const int visual_attribs[] = {
GLX_X_RENDERABLE , True,
GLX_DRAWABLE_TYPE , GLX_WINDOW_BIT,
GLX_RENDER_TYPE , GLX_RGBA_BIT,
GLX_DOUBLEBUFFER , True,
GLX_RED_SIZE , 8,
GLX_GREEN_SIZE , 8,
GLX_BLUE_SIZE , 8,
GLX_ALPHA_SIZE , 8,
GLX_DEPTH_SIZE , 0,
GLX_STENCIL_SIZE , 0,
None
};
int nelements, major, minor;
GLXFBConfig *fbcs = NULL;
gfx_ctx_glx_data_t *glx = (gfx_ctx_glx_data_t*)calloc(1, sizeof(gfx_ctx_glx_data_t));
driver_t *driver = driver_get_ptr();
if (!glx)
return false;
XInitThreads();
g_quit = 0;
if (!glx->g_dpy)
glx->g_dpy = XOpenDisplay(NULL);
if (!glx->g_dpy)
goto error;
glXQueryVersion(glx->g_dpy, &major, &minor);
/* GLX 1.3+ minimum required. */
if ((major * 1000 + minor) < 1003)
goto error;
glx_create_context_attribs = (PFNGLXCREATECONTEXTATTRIBSARBPROC)glXGetProcAddress((const GLubyte*)"glXCreateContextAttribsARB");
#ifdef GL_DEBUG
glx->g_debug = true;
#else
glx->g_debug = g_extern.system.hw_render_callback.debug_context;
#endif
glx->g_core = (g_major * 1000 + g_minor) >= 3001; /* Have to use ContextAttribs */
if ((glx->g_core || glx->g_debug) && !glx_create_context_attribs)
goto error;
fbcs = glXChooseFBConfig(glx->g_dpy, DefaultScreen(glx->g_dpy),
visual_attribs, &nelements);
if (!fbcs)
goto error;
if (!nelements)
{
XFree(fbcs);
goto error;
}
glx->g_fbc = fbcs[0];
XFree(fbcs);
driver->video_context_data = glx;
return true;
error:
ctx_glx_destroy_resources(glx);
if (glx)
free(glx);
return false;
}
static bool gfx_ctx_glx_set_video_mode(void *data,
unsigned width, unsigned height,
bool fullscreen)
{
XEvent event;
bool true_full = false, windowed_full;
int val, x_off = 0, y_off = 0;
XVisualInfo *vi = NULL;
XSetWindowAttributes swa = {0};
int (*old_handler)(Display*, XErrorEvent*) = NULL;
driver_t *driver = driver_get_ptr();
gfx_ctx_glx_data_t *glx = (gfx_ctx_glx_data_t*)driver->video_context_data;
struct sigaction sa = {{0}};
sa.sa_handler = glx_sighandler;
sa.sa_flags = SA_RESTART;
sigemptyset(&sa.sa_mask);
sigaction(SIGINT, &sa, NULL);
sigaction(SIGTERM, &sa, NULL);
if (!glx)
return false;
windowed_full = g_settings.video.windowed_fullscreen;
true_full = false;
vi = glXGetVisualFromFBConfig(glx->g_dpy, glx->g_fbc);
if (!vi)
goto error;
swa.colormap = glx->g_cmap = XCreateColormap(glx->g_dpy,
RootWindow(glx->g_dpy, vi->screen), vi->visual, AllocNone);
swa.event_mask = StructureNotifyMask | KeyPressMask | KeyReleaseMask |
ButtonReleaseMask | ButtonPressMask;
swa.override_redirect = fullscreen ? True : False;
if (fullscreen && !windowed_full)
{
if (x11_enter_fullscreen(glx->g_dpy, width, height, &glx->g_desktop_mode))
{
glx->g_should_reset_mode = true;
true_full = true;
}
else
RARCH_ERR("[GLX]: Entering true fullscreen failed. Will attempt windowed mode.\n");
}
if (g_settings.video.monitor_index)
glx->g_screen = g_settings.video.monitor_index - 1;
#ifdef HAVE_XINERAMA
if (fullscreen || glx->g_screen != 0)
{
unsigned new_width = width;
unsigned new_height = height;
if (x11_get_xinerama_coord(glx->g_dpy, glx->g_screen,
&x_off, &y_off, &new_width, &new_height))
RARCH_LOG("[GLX]: Using Xinerama on screen #%u.\n", glx->g_screen);
else
RARCH_LOG("[GLX]: Xinerama is not active on screen.\n");
if (fullscreen)
{
width = new_width;
height = new_height;
}
}
#endif
RARCH_LOG("[GLX]: X = %d, Y = %d, W = %u, H = %u.\n",
x_off, y_off, width, height);
glx->g_win = XCreateWindow(glx->g_dpy, RootWindow(glx->g_dpy, vi->screen),
x_off, y_off, width, height, 0,
vi->depth, InputOutput, vi->visual,
CWBorderPixel | CWColormap | CWEventMask | (true_full ? CWOverrideRedirect : 0), &swa);
XSetWindowBackground(glx->g_dpy, glx->g_win, 0);
glx->g_glx_win = glXCreateWindow(glx->g_dpy, glx->g_fbc, glx->g_win, 0);
x11_set_window_attr(glx->g_dpy, glx->g_win);
if (fullscreen)
x11_show_mouse(glx->g_dpy, glx->g_win, false);
if (true_full)
{
RARCH_LOG("[GLX]: Using true fullscreen.\n");
XMapRaised(glx->g_dpy, glx->g_win);
}
else if (fullscreen) /* We attempted true fullscreen, but failed. Attempt using windowed fullscreen. */
{
XMapRaised(glx->g_dpy, glx->g_win);
RARCH_LOG("[GLX]: Using windowed fullscreen.\n");
/* We have to move the window to the screen we want to go fullscreen on first.
* x_off and y_off usually get ignored in XCreateWindow().
*/
x11_move_window(glx->g_dpy, glx->g_win, x_off, y_off, width, height);
x11_windowed_fullscreen(glx->g_dpy, glx->g_win);
}
else
{
XMapWindow(glx->g_dpy, glx->g_win);
// If we want to map the window on a different screen, we'll have to do it by force.
// Otherwise, we should try to let the window manager sort it out.
// x_off and y_off usually get ignored in XCreateWindow().
if (glx->g_screen)
x11_move_window(glx->g_dpy, glx->g_win, x_off, y_off, width, height);
}
XIfEvent(glx->g_dpy, &event, glx_wait_notify, NULL);
if (!glx->g_ctx)
{
if (glx->g_core || glx->g_debug)
{
int attribs[16];
int *aptr = attribs;
if (glx->g_core)
{
*aptr++ = GLX_CONTEXT_MAJOR_VERSION_ARB;
*aptr++ = g_major;
*aptr++ = GLX_CONTEXT_MINOR_VERSION_ARB;
*aptr++ = g_minor;
/* Technically, we don't have core/compat until 3.2.
* Version 3.1 is either compat or not depending on GL_ARB_compatibility.
*/
if ((g_major * 1000 + g_minor) >= 3002)
{
*aptr++ = GLX_CONTEXT_PROFILE_MASK_ARB;
*aptr++ = GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
}
}
if (glx->g_debug)
{
*aptr++ = GLX_CONTEXT_FLAGS_ARB;
*aptr++ = GLX_CONTEXT_DEBUG_BIT_ARB;
}
*aptr = None;
glx->g_ctx = glx_create_context_attribs(glx->g_dpy, glx->g_fbc, NULL, True, attribs);
if (glx->g_use_hw_ctx)
{
RARCH_LOG("[GLX]: Creating shared HW context.\n");
glx->g_hw_ctx = glx_create_context_attribs(glx->g_dpy, glx->g_fbc, glx->g_ctx, True, attribs);
if (!glx->g_hw_ctx)
RARCH_ERR("[GLX]: Failed to create new shared context.\n");
}
}
else
{
glx->g_ctx = glXCreateNewContext(glx->g_dpy, glx->g_fbc, GLX_RGBA_TYPE, 0, True);
if (glx->g_use_hw_ctx)
{
glx->g_hw_ctx = glXCreateNewContext(glx->g_dpy, glx->g_fbc, GLX_RGBA_TYPE, glx->g_ctx, True);
if (!glx->g_hw_ctx)
RARCH_ERR("[GLX]: Failed to create new shared context.\n");
}
}
if (!glx->g_ctx)
{
RARCH_ERR("[GLX]: Failed to create new context.\n");
goto error;
}
}
else
{
driver->video_cache_context_ack = true;
RARCH_LOG("[GLX]: Using cached GL context.\n");
}
glXMakeContextCurrent(glx->g_dpy, glx->g_glx_win, glx->g_glx_win, glx->g_ctx);
XSync(glx->g_dpy, False);
g_quit_atom = XInternAtom(glx->g_dpy, "WM_DELETE_WINDOW", False);
if (g_quit_atom)
XSetWMProtocols(glx->g_dpy, glx->g_win, &g_quit_atom, 1);
glXGetConfig(glx->g_dpy, vi, GLX_DOUBLEBUFFER, &val);
glx->g_is_double = val;
if (glx->g_is_double)
{
const char *swap_func = NULL;
g_pglSwapIntervalEXT = (void (*)(Display*, GLXDrawable, int))glXGetProcAddress((const GLubyte*)"glXSwapIntervalEXT");
g_pglSwapIntervalSGI = (int (*)(int))glXGetProcAddress((const GLubyte*)"glXSwapIntervalSGI");
g_pglSwapInterval = (int (*)(int))glXGetProcAddress((const GLubyte*)"glXSwapIntervalMESA");
if (g_pglSwapIntervalEXT)
swap_func = "glXSwapIntervalEXT";
else if (g_pglSwapInterval)
swap_func = "glXSwapIntervalMESA";
else if (g_pglSwapIntervalSGI)
swap_func = "glXSwapIntervalSGI";
if (!g_pglSwapInterval && !g_pglSwapIntervalEXT && !g_pglSwapIntervalSGI)
RARCH_WARN("[GLX]: Cannot find swap interval call.\n");
else
RARCH_LOG("[GLX]: Found swap function: %s.\n", swap_func);
}
else
RARCH_WARN("[GLX]: Context is not double buffered!.\n");
gfx_ctx_glx_swap_interval(data, glx->g_interval);
/* This can blow up on some drivers. It's not fatal, so override errors for this call. */
old_handler = XSetErrorHandler(glx_nul_handler);
XSetInputFocus(glx->g_dpy, glx->g_win, RevertToNone, CurrentTime);
XSync(glx->g_dpy, False);
XSetErrorHandler(old_handler);
XFree(vi);
glx->g_has_focus = true;
if (!x11_create_input_context(glx->g_dpy, glx->g_win, &glx->g_xim, &glx->g_xic))
goto error;
driver->display_type = RARCH_DISPLAY_X11;
driver->video_display = (uintptr_t)glx->g_dpy;
driver->video_window = (uintptr_t)glx->g_win;
glx->g_true_full = true_full;
return true;
error:
if (vi)
XFree(vi);
ctx_glx_destroy_resources(glx);
if (glx)
free(glx);
return false;
}
static void gfx_ctx_glx_destroy(void *data)
{
driver_t *driver = driver_get_ptr();
gfx_ctx_glx_data_t *glx = (gfx_ctx_glx_data_t*)driver->video_context_data;
if (!glx)
return;
(void)data;
ctx_glx_destroy_resources(glx);
if (driver->video_context_data)
free(driver->video_context_data);
driver->video_context_data = NULL;
}
static void gfx_ctx_glx_input_driver(void *data,
const input_driver_t **input, void **input_data)
{
void *xinput = input_x.init();
(void)data;
*input = xinput ? &input_x : NULL;
*input_data = xinput;
}
static bool gfx_ctx_glx_has_focus(void *data)
{
Window win;
int rev;
driver_t *driver = driver_get_ptr();
gfx_ctx_glx_data_t *glx = (gfx_ctx_glx_data_t*)driver->video_context_data;
(void)data;
XGetInputFocus(glx->g_dpy, &win, &rev);
return (win == glx->g_win && glx->g_has_focus) || glx->g_true_full;
}
static bool gfx_ctx_glx_suppress_screensaver(void *data, bool enable)
{
driver_t *driver = driver_get_ptr();
if (driver->display_type != RARCH_DISPLAY_X11)
return false;
x11_suspend_screensaver(driver->video_window);
return true;
}
static bool gfx_ctx_glx_has_windowed(void *data)
{
(void)data;
return true;
}
static gfx_ctx_proc_t gfx_ctx_glx_get_proc_address(const char *symbol)
{
return glXGetProcAddress((const GLubyte*)symbol);
}
static bool gfx_ctx_glx_bind_api(void *data, enum gfx_ctx_api api,
unsigned major, unsigned minor)
{
(void)data;
g_major = major;
g_minor = minor;
return api == GFX_CTX_OPENGL_API;
}
static void gfx_ctx_glx_show_mouse(void *data, bool state)
{
driver_t *driver = driver_get_ptr();
gfx_ctx_glx_data_t *glx = (gfx_ctx_glx_data_t*)driver->video_context_data;
(void)data;
x11_show_mouse(glx->g_dpy, glx->g_win, state);
}
static void gfx_ctx_glx_bind_hw_render(void *data, bool enable)
{
driver_t *driver = driver_get_ptr();
gfx_ctx_glx_data_t *glx = (gfx_ctx_glx_data_t*)driver->video_context_data;
if (!glx)
return;
(void)data;
glx->g_use_hw_ctx = enable;
if (!glx->g_dpy)
return;
if (!glx->g_glx_win)
return;
glXMakeContextCurrent(glx->g_dpy, glx->g_glx_win,
glx->g_glx_win, enable ? glx->g_hw_ctx : glx->g_ctx);
}
const gfx_ctx_driver_t gfx_ctx_glx = {
gfx_ctx_glx_init,
gfx_ctx_glx_destroy,
gfx_ctx_glx_bind_api,
gfx_ctx_glx_swap_interval,
gfx_ctx_glx_set_video_mode,
gfx_ctx_glx_get_video_size,
NULL, /* get_video_output_size */
NULL, /* get_video_output_prev */
NULL, /* get_video_output_next */
NULL,
gfx_ctx_glx_update_window_title,
gfx_ctx_glx_check_window,
gfx_ctx_glx_set_resize,
gfx_ctx_glx_has_focus,
gfx_ctx_glx_suppress_screensaver,
gfx_ctx_glx_has_windowed,
gfx_ctx_glx_swap_buffers,
gfx_ctx_glx_input_driver,
gfx_ctx_glx_get_proc_address,
#ifdef HAVE_EGL
NULL,
NULL,
#endif
gfx_ctx_glx_show_mouse,
"glx",
gfx_ctx_glx_bind_hw_render,
};
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