#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;
-}
+#include "util/debug.h"
+extern const _EGLDriver _eglDriver;
/**
- * Add a module to the module array.
+ * Initialize the display using the driver's function.
+ * If the initialisation fails, try again using only software rendering.
*/
-static _EGLModule *
-_eglAddModule(const char *name)
+bool
+_eglInitializeDisplay(_EGLDisplay *disp)
{
- _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;
-
- 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)
-{
- _EGLModule *mod;
- EGLint i;
-
- for (i = 0; i < ARRAY_SIZE(_eglBuiltInDrivers); i++) {
- mod = _eglAddModule(_eglBuiltInDrivers[i].name);
- if (mod)
- mod->BuiltIn = _eglBuiltInDrivers[i].main;
- }
-}
-
-
-/**
- * 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 (!_eglAddUserDriver()) {
- /*
- * Add other drivers only when EGL_DRIVER is not set. The order here
- * decides the priorities.
- */
- _eglAddBuiltInDrivers();
- }
-
- return (_eglModules != NULL);
-}
-
-
-/**
- * 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 (mod->Driver->API.Initialize(mod->Driver, dpy)) {
- drv = mod->Driver;
- break;
- }
- else {
- i++;
- }
- }
-
- return drv;
-}
-
-
-/**
- * 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
- * the display.
- */
-_EGLDriver *
-_eglMatchDriver(_EGLDisplay *dpy, EGLBoolean test_only)
-{
- _EGLDriver *best_drv;
-
- assert(!dpy->Initialized);
-
- mtx_lock(&_eglModuleMutex);
+ assert(!disp->Initialized);
/* set options */
- dpy->Options.TestOnly = test_only;
- dpy->Options.UseFallback = EGL_FALSE;
-
- best_drv = _eglMatchAndInitialize(dpy);
- if (!best_drv) {
- dpy->Options.UseFallback = EGL_TRUE;
- best_drv = _eglMatchAndInitialize(dpy);
+ disp->Options.ForceSoftware =
+ env_var_as_boolean("LIBGL_ALWAYS_SOFTWARE", false);
+ if (disp->Options.ForceSoftware)
+ _eglLog(_EGL_DEBUG, "Found 'LIBGL_ALWAYS_SOFTWARE' set, will use a CPU renderer");
+
+ if (_eglDriver.Initialize(disp)) {
+ disp->Driver = &_eglDriver;
+ disp->Initialized = EGL_TRUE;
+ return true;
}
- mtx_unlock(&_eglModuleMutex);
+ if (disp->Options.ForceSoftware)
+ return false;
- if (best_drv) {
- _eglLog(_EGL_DEBUG, "the best driver is %s%s",
- best_drv->Name, (test_only) ? " (test only) " : "");
- if (!test_only) {
- dpy->Driver = best_drv;
- dpy->Initialized = EGL_TRUE;
- }
- }
+ disp->Options.ForceSoftware = EGL_TRUE;
+ if (!_eglDriver.Initialize(disp))
+ return false;
- return best_drv;
+ disp->Driver = &_eglDriver;
+ disp->Initialized = EGL_TRUE;
+ return true;
}
-
__eglMustCastToProperFunctionPointerType
_eglGetDriverProc(const char *procname)
{
- EGLint i;
- _EGLProc proc = NULL;
+ if (_eglDriver.GetProcAddress)
+ return _eglDriver.GetProcAddress(procname);
- 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;
- }
-
- 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;
-}
-
-
-/**
- * Unload all drivers.
- */
-void
-_eglUnloadDrivers(void)
-{
- /* this is called at atexit time */
- if (_eglModules) {
- _eglDestroyArray(_eglModules, _eglFreeModule);
- _eglModules = NULL;
- }
+ return NULL;
}
projects / mesa.git / blobdiff