#include "egldriver.h"
#include "egllog.h"
-typedef struct _egl_module {
- char *Name;
- _EGLMain_t BuiltIn;
- _EGLDriver *Driver;
-} _EGLModule;
-
static mtx_t _eglModuleMutex = _MTX_INITIALIZER_NP;
-static _EGLArray *_eglModules;
-
-const struct {
- const char *name;
- _EGLMain_t main;
-} _eglBuiltInDrivers[] = {
-#ifdef _EGL_BUILT_IN_DRIVER_DRI2
- { "egl_dri2", _eglBuiltInDriverDRI2 },
-#endif
-#ifdef _EGL_BUILT_IN_DRIVER_HAIKU
- { "egl_haiku", _eglBuiltInDriverHaiku },
-#endif
-};
-
-/**
- * Load a module and create the driver object.
- */
-static EGLBoolean
-_eglLoadModule(_EGLModule *mod)
-{
- _EGLDriver *drv;
-
- if (mod->Driver)
- return EGL_TRUE;
-
- if (!mod->BuiltIn)
- return EGL_FALSE;
-
- drv = mod->BuiltIn(NULL);
- if (!drv || !drv->Name)
- return EGL_FALSE;
-
- mod->Driver = drv;
-
- return EGL_TRUE;
-}
-
-
-/**
- * Unload a module.
- */
-static void
-_eglUnloadModule(_EGLModule *mod)
-{
- /* destroy the driver */
- if (mod->Driver && mod->Driver->Unload)
- mod->Driver->Unload(mod->Driver);
-
- mod->Driver = NULL;
-}
-
-
-/**
- * Add a module to the module array.
- */
-static _EGLModule *
-_eglAddModule(const char *name)
-{
- _EGLModule *mod;
- EGLint i;
-
- if (!_eglModules) {
- _eglModules = _eglCreateArray("Module", 8);
- if (!_eglModules)
- return NULL;
- }
-
- /* find duplicates */
- for (i = 0; i < _eglModules->Size; i++) {
- mod = _eglModules->Elements[i];
- if (strcmp(mod->Name, name) == 0)
- return mod;
- }
-
- /* allocate a new one */
- mod = calloc(1, sizeof(*mod));
- if (mod) {
- mod->Name = strdup(name);
- if (!mod->Name) {
- free(mod);
- mod = NULL;
- }
- }
- if (mod) {
- _eglAppendArray(_eglModules, (void *) mod);
- _eglLog(_EGL_DEBUG, "added %s to module array", mod->Name);
- }
-
- return mod;
-}
-
-
-/**
- * Free a module.
- */
-static void
-_eglFreeModule(void *module)
-{
- _EGLModule *mod = (_EGLModule *) module;
-
- _eglUnloadModule(mod);
- free(mod->Name);
- free(mod);
-}
-
-
-/**
- * Add the user driver to the module array.
- *
- * The user driver is specified by EGL_DRIVER.
- */
-static EGLBoolean
-_eglAddUserDriver(void)
-{
- char *env;
-
- env = getenv("EGL_DRIVER");
- if (env) {
- EGLint i;
+static _EGLDriver *_eglDriver;
- for (i = 0; i < ARRAY_SIZE(_eglBuiltInDrivers); i++) {
- if (!strcmp(_eglBuiltInDrivers[i].name, env)) {
- _EGLModule *mod = _eglAddModule(env);
- if (mod)
- mod->BuiltIn = _eglBuiltInDrivers[i].main;
-
- return EGL_TRUE;
- }
- }
- }
-
- return EGL_FALSE;
-}
-
-
-/**
- * Add built-in drivers to the module array.
- */
-static void
-_eglAddBuiltInDrivers(void)
+static _EGLDriver *
+_eglGetDriver(void)
{
- _EGLModule *mod;
- EGLint i;
-
- for (i = 0; i < ARRAY_SIZE(_eglBuiltInDrivers); i++) {
- mod = _eglAddModule(_eglBuiltInDrivers[i].name);
- if (mod)
- mod->BuiltIn = _eglBuiltInDrivers[i].main;
- }
-}
-
+ mtx_lock(&_eglModuleMutex);
-/**
- * Add drivers to the module array. Drivers will be loaded as they are matched
- * to displays.
- */
-static EGLBoolean
-_eglAddDrivers(void)
-{
- if (_eglModules)
- return EGL_TRUE;
+ if (!_eglDriver)
+ _eglDriver = _eglBuiltInDriver();
- if (!_eglAddUserDriver()) {
- /*
- * Add other drivers only when EGL_DRIVER is not set. The order here
- * decides the priorities.
- */
- _eglAddBuiltInDrivers();
- }
+ mtx_unlock(&_eglModuleMutex);
- return (_eglModules != NULL);
+ return _eglDriver;
}
-
-/**
- * A helper function for _eglMatchDriver. It finds the first driver that can
- * initialize the display and return.
- */
static _EGLDriver *
_eglMatchAndInitialize(_EGLDisplay *dpy)
{
- _EGLDriver *drv = NULL;
- EGLint i = 0;
-
- if (!_eglAddDrivers()) {
- _eglLog(_EGL_WARNING, "failed to find any driver");
- return NULL;
- }
-
- if (dpy->Driver) {
- drv = dpy->Driver;
- /* no re-matching? */
- if (!drv->API.Initialize(drv, dpy))
- drv = NULL;
- return drv;
- }
-
- while (i < _eglModules->Size) {
- _EGLModule *mod = (_EGLModule *) _eglModules->Elements[i];
-
- if (!_eglLoadModule(mod)) {
- /* remove invalid modules */
- _eglEraseArray(_eglModules, i, _eglFreeModule);
- continue;
- }
+ if (_eglGetDriver())
+ if (_eglDriver->API.Initialize(_eglDriver, dpy))
+ return _eglDriver;
- if (mod->Driver->API.Initialize(mod->Driver, dpy)) {
- drv = mod->Driver;
- break;
- }
- else {
- i++;
- }
- }
-
- return drv;
+ return NULL;
}
-
/**
* Match a display to a driver. The display is initialized unless test_only is
* true. The matching is done by finding the first driver that can initialize
assert(!dpy->Initialized);
- mtx_lock(&_eglModuleMutex);
-
/* set options */
dpy->Options.TestOnly = test_only;
dpy->Options.UseFallback = EGL_FALSE;
best_drv = _eglMatchAndInitialize(dpy);
}
- mtx_unlock(&_eglModuleMutex);
-
if (best_drv) {
_eglLog(_EGL_DEBUG, "the best driver is %s%s",
best_drv->Name, (test_only) ? " (test only) " : "");
return best_drv;
}
-
__eglMustCastToProperFunctionPointerType
_eglGetDriverProc(const char *procname)
{
- EGLint i;
- _EGLProc proc = NULL;
-
- if (!_eglModules) {
- /* load the driver for the default display */
- EGLDisplay egldpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
- _EGLDisplay *dpy = _eglLookupDisplay(egldpy);
- if (!dpy || !_eglMatchDriver(dpy, EGL_TRUE))
- return NULL;
- }
+ if (_eglGetDriver())
+ return _eglDriver->API.GetProcAddress(_eglDriver, procname);
- for (i = 0; i < _eglModules->Size; i++) {
- _EGLModule *mod = (_EGLModule *) _eglModules->Elements[i];
-
- if (!mod->Driver)
- break;
- proc = mod->Driver->API.GetProcAddress(mod->Driver, procname);
- if (proc)
- break;
- }
-
- return proc;
+ return NULL;
}
-
/**
* Unload all drivers.
*/
_eglUnloadDrivers(void)
{
/* this is called at atexit time */
- if (_eglModules) {
- _eglDestroyArray(_eglModules, _eglFreeModule);
- _eglModules = NULL;
- }
+ if (_eglDriver && _eglDriver->Unload)
+ _eglDriver->Unload(_eglDriver);
+
+ _eglDriver = NULL;
}
projects / mesa.git / commitdiff