#endif
}
+
/**
* XXX this function is totally subject change!!!
*
*
- * Determine/return the name of the driver to use for the given _EGLDisplay.
+ * Determine/return the path of the driver to use for the given native display.
*
* Try to be clever and determine if nativeDisplay is an Xlib Display
* ptr or a string (naming a driver or screen number, etc).
* Else if the first character is '!' we interpret it as specific driver name
* (i.e. "!r200" or "!i830".
*
- * Whatever follows ':' is copied and put into dpy->DriverArgs.
+ * Whatever follows ':' is interpreted as arguments.
*
- * The caller may free() the returned string.
+ * The caller may free() the returned strings.
*/
-const char *
-_eglChooseDriver(_EGLDisplay *dpy)
+static char *
+_eglChooseDriver(_EGLDisplay *dpy, char **argsRet)
{
- /* Under Windows, the NativeDisplay is an HDC handle, therefore */
- /* it can't be interpreted as a string or a pointer. */
-#if defined(_EGL_PLATFORM_WINDOWS)
- const char *displayString = NULL;
-#else
- const char *displayString = (const char *) dpy->NativeDisplay;
-#endif
- const char *driverName = NULL;
+ char *path = NULL;
+ const char *args = NULL;
- (void) DefaultDriverName;
+ path = getenv("EGL_DRIVER");
+ if (path)
+ path = _eglstrdup(path);
#if defined(_EGL_PLATFORM_X)
- /* First, if the EGL_DRIVER env var is set, use that */
- driverName = getenv("EGL_DRIVER");
- if (driverName)
- return _eglstrdup(driverName);
-#endif
+ (void) DefaultDriverName;
-#if 0
- if (!displayString) {
- /* choose a default */
- displayString = DefaultDriverName;
- }
-#endif
- /* extract default DriverArgs = whatever follows ':' */
- if (displayString &&
- (displayString[0] == '!' ||
- displayString[0] == ':')) {
- const char *args = strchr(displayString, ':');
- if (args)
- dpy->DriverArgs = _eglstrdup(args + 1);
- }
+ if (!path && dpy->NativeDisplay) {
+ const char *dpyString = (const char *) dpy->NativeDisplay;
+ char *p;
+ /* parse the display string */
+ if (dpyString[0] == '!' || dpyString[0] == ':') {
+ if (dpyString[0] == '!') {
+ path = _eglstrdup(dpyString);
+ p = strchr(path, ':');
+ if (p)
+ *p++ = '\0';
+ } else {
+ p = strchr(dpyString, ':');
+ if (p)
+ p++;
+ }
- /* determine driver name now */
- if (displayString && displayString[0] == ':' &&
- (displayString[1] >= '0' && displayString[1] <= '9') &&
- !displayString[2]) {
- int card = atoi(displayString + 1);
- driverName = _eglChooseDRMDriver(card);
- }
- else if (displayString && displayString[0] == '!') {
- /* use user-specified driver name */
- driverName = _eglstrdup(displayString + 1);
- /* truncate driverName at ':' if present */
- {
- char *args = strchr(driverName, ':');
- if (args) {
- *args = 0;
+ if (p) {
+ if (!path && p[0] >= '0' && p[0] <= '9' && !p[1]) {
+ int card = atoi(p);
+ path = (char *) _eglChooseDRMDriver(card);
+ }
+ args = p;
}
}
+ else {
+ path = (char *) _xeglChooseDriver(dpy);
+ }
}
- else
- {
- /* NativeDisplay is not a string! */
-#if defined(_EGL_PLATFORM_X)
- driverName = _xeglChooseDriver(dpy);
-#else
- driverName = DefaultDriverName;
-#endif
- }
+#elif defined(_EGL_PLATFORM_WINDOWS)
+ if (!path)
+ path = _eglstrdup(DefaultDriverName);
+#endif /* _EGL_PLATFORM_X */
- return driverName;
+ if (path && argsRet)
+ *argsRet = (args) ? _eglstrdup(args) : NULL;
+
+ return path;
}
/**
- * Open/load the named driver and call its bootstrap function: _eglMain().
- * By the time this function is called, the dpy->DriverName should have
- * been determined.
- *
- * \return new _EGLDriver object.
+ * Open the named driver and find its bootstrap function: _eglMain().
*/
-_EGLDriver *
-_eglOpenDriver(_EGLDisplay *dpy, const char *driverName, const char *args)
+static _EGLMain_t
+_eglOpenLibrary(const char *driverName, lib_handle *handle)
{
- _EGLDriver *drv;
_EGLMain_t mainFunc;
lib_handle lib;
char driverFilename[1000];
if (!mainFunc) {
_eglLog(_EGL_WARNING, "_eglMain not found in %s", driverFilename);
- close_library(lib);
+ if (lib)
+ close_library(lib);
return NULL;
}
+ *handle = lib;
+ return mainFunc;
+}
+
+
+/**
+ * Load the named driver. The path and args passed will be
+ * owned by the driver and freed.
+ */
+static _EGLDriver *
+_eglLoadDriver(_EGLDisplay *dpy, char *path, char *args)
+{
+ _EGLMain_t mainFunc;
+ lib_handle lib;
+ _EGLDriver *drv = NULL;
+
+ mainFunc = _eglOpenLibrary(path, &lib);
+ if (!mainFunc)
+ return NULL;
+
drv = mainFunc(dpy, args);
if (!drv) {
- close_library(lib);
+ if (lib)
+ close_library(lib);
return NULL;
}
- /* with a recurvise open you want the inner most handle */
- if (!drv->LibHandle) {
- drv->LibHandle = lib;
+ if (!drv->Name) {
+ _eglLog(_EGL_WARNING, "Driver loaded from %s has no name", path);
+ drv->Name = "UNNAMED";
}
- else {
- close_library(lib);
+
+ drv->Path = path;
+ drv->Args = args;
+ drv->LibHandle = lib;
+
+ return drv;
+}
+
+
+/**
+ * Match a display to a preloaded driver.
+ */
+static _EGLDriver *
+_eglMatchDriver(_EGLDisplay *dpy)
+{
+ _EGLDriver *defaultDriver = NULL;
+ EGLint i;
+
+ for (i = 0; i < _eglGlobal.NumDrivers; i++) {
+ _EGLDriver *drv = _eglGlobal.Drivers[i];
+
+ /* display specifies a driver */
+ if (dpy->DriverName) {
+ if (strcmp(dpy->DriverName, drv->Name) == 0)
+ return drv;
+ }
+ else if (drv->Probe) {
+ if (drv->Probe(drv, dpy))
+ return drv;
+ }
+ else {
+ if (!defaultDriver)
+ defaultDriver = drv;
+ }
}
+ return defaultDriver;
+}
+
+
+/**
+ * Load a driver and save it.
+ */
+const char *
+_eglPreloadDriver(_EGLDisplay *dpy)
+{
+ char *path, *args;
+ _EGLDriver *drv;
+ EGLint i;
+
+ path = _eglChooseDriver(dpy, &args);
+ if (!path)
+ return NULL;
+
+ for (i = 0; i < _eglGlobal.NumDrivers; i++) {
+ drv = _eglGlobal.Drivers[i];
+ if (strcmp(drv->Path, path) == 0) {
+ _eglLog(_EGL_DEBUG, "Driver %s is already preloaded",
+ drv->Name);
+ free(path);
+ if (args)
+ free(args);
+ return drv->Name;
+ }
+ }
+
+ drv = _eglLoadDriver(dpy, path, args);
+ if (!drv)
+ return NULL;
+
/* update the global notion of supported APIs */
_eglGlobal.ClientAPIsMask |= drv->ClientAPIsMask;
- _eglSaveDriver(drv);
+ _eglGlobal.Drivers[_eglGlobal.NumDrivers++] = drv;
+ return drv->Name;
+}
+
+
+/**
+ * Open a preloaded driver.
+ */
+_EGLDriver *
+_eglOpenDriver(_EGLDisplay *dpy)
+{
+ _EGLDriver *drv = _eglMatchDriver(dpy);
return drv;
}
+/**
+ * Close a preloaded driver.
+ */
EGLBoolean
_eglCloseDriver(_EGLDriver *drv, _EGLDisplay *dpy)
{
- void *handle = drv->LibHandle;
- EGLBoolean b;
-
- _eglLog(_EGL_DEBUG, "Closing %s", drv->Name);
-
_eglReleaseDisplayResources(drv, dpy);
-
- b = drv->API.Terminate(drv, dpy);
-
- close_library(handle);
-
- return b;
+ drv->API.Terminate(drv, dpy);
+ return EGL_TRUE;
}
/**
- * Save the given driver pointer in the list of all known drivers.
+ * Unload preloaded drivers.
*/
void
-_eglSaveDriver(_EGLDriver *drv)
+_eglUnloadDrivers(void)
{
- _eglGlobal.Drivers[ _eglGlobal.NumDrivers++ ] = drv;
+ EGLint i;
+ for (i = 0; i < _eglGlobal.NumDrivers; i++) {
+ _EGLDriver *drv = _eglGlobal.Drivers[i];
+ lib_handle handle = drv->LibHandle;
+
+ if (drv->Path)
+ free((char *) drv->Path);
+ if (drv->Args)
+ free((char *) drv->Args);
+
+ /* destroy driver */
+ if (drv->Unload)
+ drv->Unload(drv);
+
+ if (handle)
+ close_library(handle);
+ _eglGlobal.Drivers[i] = NULL;
+ }
+
+ _eglGlobal.NumDrivers = 0;
}
projects / mesa.git / commitdiff