#include <dlfcn.h>
#include "eglx.h"
#elif defined(_EGL_PLATFORM_WINDOWS)
-/* XXX to do */
-#elif defined(_EGL_PLATFORM_WINCE)
-/* XXX to do */
+/* Use static linking on Windows for now */
+#define WINDOWS_STATIC_LINK
#endif
+/**
+ * Wrappers for dlopen/dlclose()
+ */
+#if defined(_EGL_PLATFORM_WINDOWS)
+#ifdef WINDOWS_STATIC_LINK
+ static const char *DefaultDriverName = "Windows EGL Static Library";
+#else
+ /* XXX Need to decide how to do dynamic name lookup on Windows */
+ static const char *DefaultDriverName = "TBD";
+#endif
+ static const char *SysFS = NULL;
+ typedef HMODULE lib_handle;
+
+ static HMODULE
+ open_library(const char *filename)
+ {
+#ifdef WINDOWS_STATIC_LINK
+ return 0;
+#else
+ return LoadLibrary(filename);
+#endif
+ }
-static const char *DefaultDriverName = ":0";
-static const char *SysFS = "/sys/class";
+ static void
+ close_library(HMODULE lib)
+ {
+#ifdef WINDOWS_STATIC_LINK
+#else
+ FreeLibrary(lib);
+#endif
+ }
+#elif defined(_EGL_PLATFORM_X)
+ static const char *DefaultDriverName = ":0";
+ static const char *SysFS = "/sys/class";
+ typedef void * lib_handle;
+ static void *
+ open_library(const char *filename)
+ {
+ return dlopen(filename, RTLD_LAZY);
+ }
+
+ static void
+ close_library(void *lib)
+ {
+ dlclose(lib);
+ }
+
+#endif
/**
* Given a card number, use sysfs to determine the DRI driver name.
* 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)
{
- const char *displayString = (const char *) dpy->NativeDisplay;
- const char *driverName = NULL;
+ char *path = NULL;
+ const char *args = NULL;
- (void) DefaultDriverName;
+ path = getenv("EGL_DRIVER");
+ if (path)
+ path = _eglstrdup(path);
- /* First, if the EGL_DRIVER env var is set, use that */
- driverName = getenv("EGL_DRIVER");
- if (driverName)
- return _eglstrdup(driverName);
+#if defined(_EGL_PLATFORM_X)
+ (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);
#elif defined(_EGL_PLATFORM_WINDOWS)
- /* XXX to do */
- driverName = _weglChooseDriver(dpy);
-#elif defined(_EGL_PLATFORM_WINCE)
- /* XXX to do */
-#else
- driverName = DefaultDriverName;
-#endif
- }
+ if (!path)
+ path = _eglstrdup(DefaultDriverName);
+#endif /* _EGL_PLATFORM_X */
+
+ if (path && argsRet)
+ *argsRet = (args) ? _eglstrdup(args) : NULL;
- return driverName;
+ 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;
-#if defined(_EGL_PLATFORM_WINDOWS)
- HMODULE lib;
-#elif defined(_EGL_PLATFORM_X)
- void *lib;
-#endif
+ lib_handle lib;
char driverFilename[1000];
assert(driverName);
#if defined(_EGL_PLATFORM_WINDOWS)
+/* Use static linking on Windows for now */
+#ifdef WINDOWS_STATIC_LINK
+ lib = 0;
+ mainFunc = (_EGLMain_t)_eglMain;
+#else
/* XXX untested */
sprintf(driverFilename, "%s.dll", driverName);
_eglLog(_EGL_DEBUG, "dlopen(%s)", driverFilename);
- lib = LoadLibrary(driverFilename);
+ lib = open_library(driverFilename);
+ if (!lib) {
+ _eglLog(_EGL_WARNING, "Could not open %s",
+ driverFilename);
+ return NULL;
+ }
+ mainFunc = (_EGLMain_t) GetProcAddress(lib, "_eglMain");
+#endif
#elif defined(_EGL_PLATFORM_X)
/* XXX also prepend a directory path??? */
sprintf(driverFilename, "%s.so", driverName);
_eglLog(_EGL_DEBUG, "dlopen(%s)", driverFilename);
- lib = dlopen(driverFilename, RTLD_NOW);
-#endif
-
+ lib = open_library(driverFilename);
if (!lib) {
_eglLog(_EGL_WARNING, "Could not open %s (%s)",
driverFilename, dlerror());
return NULL;
}
-
-#if defined(_EGL_PLATFORM_WINDOWS)
- mainFunc = (_EGLMain_t) GetProcAddress(lib, "_eglMain");
-#elif defined(_EGL_PLATFORM_X)
mainFunc = (_EGLMain_t) dlsym(lib, "_eglMain");
#endif
if (!mainFunc) {
_eglLog(_EGL_WARNING, "_eglMain not found in %s", driverFilename);
-#if defined(_EGL_PLATFORM_WINDOWS)
- FreeLibrary(lib);
-#elif defined(_EGL_PLATFORM_X)
- dlclose(lib);
-#endif
+ 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) {
-#if defined(_EGL_PLATFORM_WINDOWS)
- FreeLibrary(lib);
-#elif defined(_EGL_PLATFORM_X)
- dlclose(lib);
-#endif
+ if (lib)
+ close_library(lib);
return NULL;
}
- /* with a recurvise open you want the inner most handle */
- if (!drv->LibHandle) {
- drv->LibHandle = lib;
- }
- else {
-#if defined(_EGL_PLATFORM_WINDOWS)
- FreeLibrary(lib);
-#elif defined(_EGL_PLATFORM_X)
- dlclose(lib);
-#endif
+ if (!drv->Name) {
+ _eglLog(_EGL_WARNING, "Driver loaded from %s has no name", path);
+ drv->Name = "UNNAMED";
}
- /* update the global notion of supported APIs */
- _eglGlobal.ClientAPIsMask |= drv->ClientAPIsMask;
-
- _eglSaveDriver(drv);
+ drv->Path = path;
+ drv->Args = args;
+ drv->LibHandle = lib;
return drv;
}
-EGLBoolean
-_eglCloseDriver(_EGLDriver *drv, EGLDisplay dpy)
+/**
+ * Match a display to a preloaded driver.
+ */
+static _EGLDriver *
+_eglMatchDriver(_EGLDisplay *dpy)
{
- void *handle = drv->LibHandle;
- EGLBoolean b;
+ _EGLDriver *defaultDriver = NULL;
+ EGLint i;
- _eglLog(_EGL_DEBUG, "Closing %s", drv->Name);
+ for (i = 0; i < _eglGlobal.NumDrivers; i++) {
+ _EGLDriver *drv = _eglGlobal.Drivers[i];
- /*
- * XXX check for currently bound context/surfaces and delete them?
- */
+ /* 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;
+ }
+ }
- b = drv->API.Terminate(drv, dpy);
+ return defaultDriver;
+}
-#if defined(_EGL_PLATFORM_WINDOWS)
- FreeLibrary(handle);
-#elif defined(_EGL_PLATFORM_X)
- dlclose(handle);
-#endif
- return b;
+/**
+ * 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;
+
+ _eglGlobal.Drivers[_eglGlobal.NumDrivers++] = drv;
+
+ return drv->Name;
+}
+
+
+/**
+ * Open a preloaded driver.
+ */
+_EGLDriver *
+_eglOpenDriver(_EGLDisplay *dpy)
+{
+ _EGLDriver *drv = _eglMatchDriver(dpy);
+ return drv;
}
/**
- * Save the given driver pointer in the list of all known drivers.
+ * Close a preloaded driver.
+ */
+EGLBoolean
+_eglCloseDriver(_EGLDriver *drv, _EGLDisplay *dpy)
+{
+ _eglReleaseDisplayResources(drv, dpy);
+ drv->API.Terminate(drv, dpy);
+ return EGL_TRUE;
+}
+
+
+/**
+ * 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;
}
drv->API.CreatePbufferFromClientBuffer = _eglCreatePbufferFromClientBuffer;
#endif /* EGL_VERSION_1_2 */
}
+
+
+
+/**
+ * Try to determine which EGL APIs (OpenGL, OpenGL ES, OpenVG, etc)
+ * are supported on the system by looking for standard library names.
+ */
+EGLint
+_eglFindAPIs(void)
+{
+ EGLint mask = 0x0;
+ lib_handle lib;
+#if defined(_EGL_PLATFORM_WINDOWS)
+ /* XXX not sure about these names */
+ const char *es1_libname = "libGLESv1_CM.dll";
+ const char *es2_libname = "libGLESv2.dll";
+ const char *gl_libname = "OpenGL32.dll";
+ const char *vg_libname = "libOpenVG.dll";
+#elif defined(_EGL_PLATFORM_X)
+ const char *es1_libname = "libGLESv1_CM.so";
+ const char *es2_libname = "libGLESv2.so";
+ const char *gl_libname = "libGL.so";
+ const char *vg_libname = "libOpenVG.so";
+#endif
+
+ if ((lib = open_library(es1_libname))) {
+ close_library(lib);
+ mask |= EGL_OPENGL_ES_BIT;
+ }
+
+ if ((lib = open_library(es2_libname))) {
+ close_library(lib);
+ mask |= EGL_OPENGL_ES2_BIT;
+ }
+
+ if ((lib = open_library(gl_libname))) {
+ close_library(lib);
+ mask |= EGL_OPENGL_BIT;
+ }
+
+ if ((lib = open_library(vg_libname))) {
+ close_library(lib);
+ mask |= EGL_OPENVG_BIT;
+ }
+
+ return mask;
+}