#define DEFAULT_DRIVER_DIR "/usr/X11R6/lib/modules/dri"
#endif
-static __DRIdriver *Drivers = NULL;
-
-
-/*
- * printf wrappers
- */
-
static void InfoMessageF(const char *f, ...)
{
va_list args;
* \returns
* A handle from \c dlopen, or \c NULL if driver file not found.
*/
-static __DRIdriver *OpenDriver(const char *driverName)
+static void *OpenDriver(const char *driverName)
{
void *glhandle = NULL;
char *libPaths = NULL;
char libDir[1000];
+ char realDriverName[200];
+ void *handle = NULL;
int i;
- __DRIdriver *driver;
-
- /* First, search Drivers list to see if we've already opened this driver */
- for (driver = Drivers; driver; driver = driver->next) {
- if (strcmp(driver->name, driverName) == 0) {
- /* found it, increment library refcount & return */
- dlopen(driver->libpath, RTLD_NOW | RTLD_GLOBAL);
- return driver;
- }
- }
/* Attempt to make sure libGL symbols will be visible to the driver */
glhandle = dlopen("libGL.so.1", RTLD_NOW | RTLD_GLOBAL);
libPaths = DEFAULT_DRIVER_DIR;
for ( i = 0 ; ExtractDir(i, libPaths, 1000, libDir) != 0 ; i++ ) {
- char realDriverName[200];
- void *handle = NULL;
-
-
/* If TLS support is enabled, try to open the TLS version of the driver
* binary first. If that fails, try the non-TLS version.
*/
handle = dlopen(realDriverName, RTLD_NOW | RTLD_GLOBAL);
}
- if ( handle != NULL ) {
- /* allocate __DRIdriver struct */
- driver = (__DRIdriver *) Xmalloc(sizeof(__DRIdriver));
- if (!driver)
- break; /* out of memory! */
- /* init the struct */
- driver->name = __glXstrdup(driverName);
- driver->libpath = __glXstrdup(realDriverName);
- if (!driver->name || !driver->libpath) {
- if (driver->name)
- Xfree(driver->name);
- if (driver->libpath)
- Xfree(driver->libpath);
- Xfree(driver);
- driver = NULL;
- break; /* out of memory! */
- }
-
- driver->createNewScreenFunc = (PFNCREATENEWSCREENFUNC)
- dlsym(handle, createNewScreenName);
-
- if ( driver->createNewScreenFunc == NULL ) {
- /* If the driver doesn't have this symbol then something's
- * really, really wrong.
- */
- ErrorMessageF("%s not defined in %s_dri.so!\n"
- "Your driver may be too old for this libGL.\n",
- createNewScreenName, driverName);
- Xfree(driver);
- driver = NULL;
- dlclose(handle);
- continue;
- }
- driver->handle = handle;
- /* put at head of linked list */
- driver->next = Drivers;
- Drivers = driver;
- break;
- }
- else {
+ if ( handle != NULL )
+ break;
+ else
ErrorMessageF("dlopen %s failed (%s)\n", realDriverName, dlerror());
- }
}
- if (!driver)
+ if (!handle)
ErrorMessageF("unable to load driver: %s_dri.so\n", driverName);
if (glhandle)
dlclose(glhandle);
- return driver;
+ return handle;
}
* Given a display pointer and screen number, return a __DRIdriver handle.
* Return NULL if anything goes wrong.
*/
-__DRIdriver *driGetDriver(Display *dpy, int scrNum)
+static void *driGetDriver(Display *dpy, int scrNum)
{
char *driverName;
+ void *ret;
+
if (GetDriverName(dpy, scrNum, &driverName)) {
- __DRIdriver *ret;
ret = OpenDriver(driverName);
if (driverName)
Xfree(driverName);
return NULL;
}
-
/*
* Exported function for querying the DRI driver for a given screen.
*
* Note: The driver remains opened after this function returns.
*/
PUBLIC const char *glXGetDriverConfig (const char *driverName) {
- __DRIdriver *driver = OpenDriver (driverName);
- if (driver)
- return dlsym (driver->handle, "__driConfigOptions");
+ void *handle = OpenDriver (driverName);
+ if (handle)
+ return dlsym (handle, "__driConfigOptions");
else
return NULL;
}
};
-
/**
* Perform the required libGL-side initialization and call the client-side
* driver's \c __driCreateNewScreen function.
driCreateScreen(__GLXscreenConfigs *psc, int screen,
__GLXdisplayPrivate *priv)
{
+ PFNCREATENEWSCREENFUNC createNewScreen;
+
+ if (priv->driDisplay.private == NULL)
+ return;
+
/* Create drawable hash */
psc->drawHash = __glxHashCreate();
if ( psc->drawHash == NULL )
/* Initialize per screen dynamic client GLX extensions */
psc->ext_list_first_time = GL_TRUE;
- /* Initialize the direct rendering per screen data and functions */
- if (priv->driDisplay.private != NULL) {
- /* FIXME: Should it be some sort of an error if createNewScreen[i]
- * FIXME: is NULL?
- */
- if (priv->driDisplay.createNewScreen &&
- priv->driDisplay.createNewScreen[screen]) {
-
- psc->driScreen.private =
- CallCreateNewScreen(psc->dpy, screen, psc,
- & priv->driDisplay,
- priv->driDisplay.createNewScreen[screen] );
- if (psc->driScreen.private != NULL)
- __glXScrEnableDRIExtension(psc);
- }
- }
+
+ psc->driver = driGetDriver(priv->dpy, screen);
+ createNewScreen = dlsym(psc->driver, createNewScreenName);
+ if (createNewScreenName == NULL)
+ return;
+
+ psc->driScreen.private =
+ CallCreateNewScreen(psc->dpy, screen, psc,
+ &priv->driDisplay, createNewScreen);
+ if (psc->driScreen.private != NULL)
+ __glXScrEnableDRIExtension(psc);
+}
+
+void driDestroyScreen(__GLXscreenConfigs *psc)
+{
+ /* Free the direct rendering per screen data */
+ if (psc->driScreen.private)
+ (*psc->driScreen.destroyScreen)(&psc->driScreen);
+ psc->driScreen.private = NULL;
+ if (psc->drawHash)
+ __glxHashDestroy(psc->drawHash);
+ if (psc->driver)
+ dlclose(psc->driver);
}
/* Called from __glXFreeDisplayPrivate.
{
__DRIdisplayPrivate *pdpyp = (__DRIdisplayPrivate *)private;
- if (pdpyp) {
- const int numScreens = ScreenCount(dpy);
- int i;
- for (i = 0; i < numScreens; i++) {
- if (pdpyp->libraryHandles[i]) {
- __DRIdriver *driver, *prev;
-
- /* Remove driver from Drivers list */
- for (prev = NULL, driver = Drivers; driver;
- prev = driver, driver = driver->next) {
- if (driver->handle == pdpyp->libraryHandles[i]) {
- if (prev)
- prev->next = driver->next;
- else
- Drivers = driver->next;
-
- Xfree(driver->name);
- Xfree(driver->libpath);
- Xfree(driver);
- break;
- }
- }
-
- dlclose(pdpyp->libraryHandles[i]);
- }
- }
- Xfree(pdpyp->libraryHandles);
+ if (pdpyp)
Xfree(pdpyp);
- }
}
*/
void *driCreateDisplay(Display *dpy, __DRIdisplay *pdisp)
{
- const int numScreens = ScreenCount(dpy);
__DRIdisplayPrivate *pdpyp;
int eventBase, errorBase;
int major, minor, patch;
- int scrn;
/* Initialize these fields to NULL in case we fail.
* If we don't do this we may later get segfaults trying to free random
pdisp->destroyDisplay = driDestroyDisplay;
- /* allocate array of pointers to createNewScreen funcs */
- pdisp->createNewScreen = (PFNCREATENEWSCREENFUNC *)
- Xmalloc(numScreens * sizeof(void *));
- if (!pdisp->createNewScreen) {
- Xfree(pdpyp);
- return NULL;
- }
-
- /* allocate array of library handles */
- pdpyp->libraryHandles = (void **) Xmalloc(numScreens * sizeof(void*));
- if (!pdpyp->libraryHandles) {
- Xfree(pdisp->createNewScreen);
- Xfree(pdpyp);
- return NULL;
- }
-
- /* dynamically discover DRI drivers for all screens, saving each
- * driver's "__driCreateScreen" function pointer. That's the bootstrap
- * entrypoint for all DRI drivers.
- */
- for (scrn = 0; scrn < numScreens; scrn++) {
- __DRIdriver *driver = driGetDriver(dpy, scrn);
- if (driver) {
- pdisp->createNewScreen[scrn] = driver->createNewScreenFunc;
- pdpyp->libraryHandles[scrn] = driver->handle;
- }
- else {
- pdisp->createNewScreen[scrn] = NULL;
- pdpyp->libraryHandles[scrn] = NULL;
- }
- }
-
return (void *)pdpyp;
}
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