static int DGA_Available(void)
{
const char *display = NULL;
Display *dpy = NULL;
int available = 0;
/* The driver is available is available if the display is local
and the DGA 2.0+ extension is available, and we can map mem.
*/
if ( SDL_X11_LoadSymbols() ) {
if ( (SDL_strncmp(XDisplayName(display), ":", 1) == 0) ||
(SDL_strncmp(XDisplayName(display), "unix:", 5) == 0) ) {
dpy = XOpenDisplay(display);
if ( dpy ) {
int events, errors, major, minor;
if ( SDL_NAME(XDGAQueryExtension)(dpy, &events, &errors) &&
SDL_NAME(XDGAQueryVersion)(dpy, &major, &minor) ) {
int screen;
screen = DefaultScreen(dpy);
if ( (major >= 2) &&
SDL_NAME(XDGAOpenFramebuffer)(dpy, screen) ) {
available = 1;
SDL_NAME(XDGACloseFramebuffer)(dpy, screen);
}
}
XCloseDisplay(dpy);
}
}
SDL_X11_UnloadSymbols();
}
return(available);
}
/* returns non-zero if all needed symbols were loaded. */
int
SDL_X11_LoadSymbols(void)
{
int rc = 1; /* always succeed if not using Dynamic X11 stuff. */
#ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC
/* deal with multiple modules (dga, x11, etc) needing these symbols... */
if (x11_load_refcount++ == 0) {
int i;
int *thismod = NULL;
for (i = 0; i < SDL_TABLESIZE(x11libs); i++) {
if (x11libs[i].libname != NULL) {
x11libs[i].lib = SDL_LoadObject(x11libs[i].libname);
}
}
#define SDL_X11_MODULE(modname) SDL_X11_HAVE_##modname = 1; /* default yes */
#define SDL_X11_SYM(a,fn,x,y,z)
#include "SDL_x11sym.h"
#undef SDL_X11_MODULE
#undef SDL_X11_SYM
#define SDL_X11_MODULE(modname) thismod = &SDL_X11_HAVE_##modname;
#define SDL_X11_SYM(a,fn,x,y,z) p##fn = (SDL_DYNX11FN_##fn) X11_GetSym(#fn,thismod);
#include "SDL_x11sym.h"
#undef SDL_X11_MODULE
#undef SDL_X11_SYM
#ifdef X_HAVE_UTF8_STRING
pXCreateIC = (SDL_DYNX11FN_XCreateIC)
X11_GetSym("XCreateIC", &SDL_X11_HAVE_UTF8);
pXGetICValues = (SDL_DYNX11FN_XGetICValues)
X11_GetSym("XGetICValues", &SDL_X11_HAVE_UTF8);
#endif
if (SDL_X11_HAVE_BASEXLIB) {
/* all required symbols loaded. */
SDL_ClearError();
} else {
/* in case something got loaded... */
SDL_X11_UnloadSymbols();
rc = 0;
}
}
#else
#define SDL_X11_MODULE(modname) SDL_X11_HAVE_##modname = 1; /* default yes */
#define SDL_X11_SYM(a,fn,x,y,z)
#include "SDL_x11sym.h"
#undef SDL_X11_MODULE
#undef SDL_X11_SYM
#ifdef X_HAVE_UTF8_STRING
pXCreateIC = XCreateIC;
pXGetICValues = XGetICValues;
#endif
#endif
return rc;
}
static void DGA_DeleteDevice(SDL_VideoDevice *device)
{
if (device != NULL) {
SDL_free(device->hidden);
SDL_free(device);
SDL_X11_UnloadSymbols();
}
}
/* returns non-zero if all needed symbols were loaded. */
int SDL_X11_LoadSymbols(void)
{
int rc = 1; /* always succeed if not using Dynamic X11 stuff. */
#ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC
/* deal with multiple modules (dga, x11, etc) needing these symbols... */
if (x11_load_refcount++ == 0) {
int i;
int *thismod = NULL;
for (i = 0; i < SDL_TABLESIZE(x11libs); i++) {
if (x11libs[i].libname != NULL) {
x11libs[i].lib = SDL_LoadObject(x11libs[i].libname);
}
}
#define SDL_X11_MODULE(modname) thismod = &SDL_X11_HAVE_##modname;
#define SDL_X11_SYM(rc,fn,params,args,ret) \
p##fn = (rc(*)params) X11_GetSym(#fn, thismod);
#include "SDL_x11sym.h"
#undef SDL_X11_MODULE
#undef SDL_X11_SYM
#ifdef X_HAVE_UTF8_STRING
pXCreateIC = (XIC(*)(XIM,...)) X11_GetSym("XCreateIC",
&SDL_X11_HAVE_UTF8);
pXGetICValues = (char * (*)(XIC,...)) X11_GetSym("XGetICValues",
&SDL_X11_HAVE_UTF8);
#endif
/*
* In case we're built with newer Xlib headers, we need to make sure
* that _XGetRequest() is available, even on older systems.
* Otherwise, various Xlib macros we use will call a NULL pointer.
*/
if (!SDL_X11_HAVE_XGETREQUEST) {
p_XGetRequest = SDL_XGetRequest_workaround;
}
if (SDL_X11_HAVE_BASEXLIB) { /* all required symbols loaded. */
SDL_ClearError();
} else {
SDL_X11_UnloadSymbols(); /* in case something got loaded... */
rc = 0;
}
}
#else
#if DEBUG_DYNAMIC_X11
printf("X11: No dynamic X11 support in this build of SDL.\n");
#endif
#ifdef X_HAVE_UTF8_STRING
pXCreateIC = XCreateIC;
pXGetICValues = XGetICValues;
#endif
#endif
return rc;
}
static int X11_Available(void)
{
Display *display = NULL;
if ( SDL_X11_LoadSymbols() ) {
display = XOpenDisplay(NULL);
if ( display != NULL ) {
XCloseDisplay(display);
}
SDL_X11_UnloadSymbols();
}
return(display != NULL);
}
static SDL_VideoDevice *DGA_CreateDevice(int devindex)
{
SDL_VideoDevice *device = NULL;
/* Initialize all variables that we clean on shutdown */
if (SDL_X11_LoadSymbols()) {
device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice));
if ( device ) {
SDL_memset(device, 0, (sizeof *device));
device->hidden = (struct SDL_PrivateVideoData *)
SDL_malloc((sizeof *device->hidden));
}
if ( (device == NULL) || (device->hidden == NULL) ) {
SDL_OutOfMemory();
if ( device ) {
SDL_free(device);
}
SDL_X11_UnloadSymbols();
return(0);
}
SDL_memset(device->hidden, 0, (sizeof *device->hidden));
/* Set the function pointers */
device->VideoInit = DGA_VideoInit;
device->ListModes = DGA_ListModes;
device->SetVideoMode = DGA_SetVideoMode;
device->SetColors = DGA_SetColors;
device->UpdateRects = NULL;
device->VideoQuit = DGA_VideoQuit;
device->AllocHWSurface = DGA_AllocHWSurface;
device->CheckHWBlit = DGA_CheckHWBlit;
device->FillHWRect = DGA_FillHWRect;
device->SetHWColorKey = NULL;
device->SetHWAlpha = NULL;
device->LockHWSurface = DGA_LockHWSurface;
device->UnlockHWSurface = DGA_UnlockHWSurface;
device->FlipHWSurface = DGA_FlipHWSurface;
device->FreeHWSurface = DGA_FreeHWSurface;
device->SetGammaRamp = DGA_SetGammaRamp;
device->GetGammaRamp = NULL;
device->SetCaption = NULL;
device->SetIcon = NULL;
device->IconifyWindow = NULL;
device->GrabInput = NULL;
device->GetWMInfo = NULL;
device->InitOSKeymap = DGA_InitOSKeymap;
device->PumpEvents = DGA_PumpEvents;
device->free = DGA_DeleteDevice;
}
return device;
}
static void
X11_DeleteDevice(SDL_VideoDevice * device)
{
SDL_VideoData *data = (SDL_VideoData *) device->driverdata;
if (data->display) {
X11_XCloseDisplay(data->display);
}
SDL_free(data->windowlist);
SDL_free(device->driverdata);
SDL_free(device);
SDL_X11_UnloadSymbols();
}
static void X11_DeleteDevice(SDL_VideoDevice *device)
{
if ( device ) {
if ( device->hidden ) {
SDL_free(device->hidden);
}
if ( device->gl_data ) {
SDL_free(device->gl_data);
}
SDL_free(device);
SDL_X11_UnloadSymbols();
}
}
static void
X11_DeleteDevice(SDL_VideoDevice * device)
{
SDL_VideoData *data = (SDL_VideoData *) device->driverdata;
if (data->display) {
XCloseDisplay(data->display);
}
SDL_free(data->windowlist);
SDL_free(device->driverdata);
#if SDL_VIDEO_OPENGL_ES || SDL_VIDEO_OPENGL_ES2
SDL_free(device->gles_data);
#endif
SDL_free(device);
SDL_X11_UnloadSymbols();
}
static void
X11_DeleteDevice(SDL_VideoDevice * device)
{
SDL_VideoData *data = (SDL_VideoData *) device->driverdata;
if (device->vulkan_config.loader_handle) {
device->Vulkan_UnloadLibrary(device);
}
if (data->display) {
X11_XCloseDisplay(data->display);
}
SDL_free(data->windowlist);
SDL_free(device->driverdata);
SDL_free(device);
SDL_X11_UnloadSymbols();
}