diff options
Diffstat (limited to 'src/mesa/drivers/dri/common/dri_util.c')
| -rw-r--r-- | src/mesa/drivers/dri/common/dri_util.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/common/dri_util.c b/src/mesa/drivers/dri/common/dri_util.c index 2a85703..c28b0fc 100644 --- a/src/mesa/drivers/dri/common/dri_util.c +++ b/src/mesa/drivers/dri/common/dri_util.c @@ -82,6 +82,23 @@ setupLoaderExtensions(__DRIscreen *psp, } /** + * This pointer determines which driver API we'll use in the case of the + * loader not passing us an explicit driver extensions list (that would, + * itself, contain a pointer to a driver API.) + * + * A driver's driDriverGetExtensions_drivername() can update this pointer to + * what it's returning, and a loader that is ignorant of createNewScreen2() + * will get the correct driver screen created, as long as no other + * driDriverGetExtensions() happened in between the first one and the + * createNewScreen(). + * + * This allows the X Server to not require the significant dri_interface.h + * updates for doing createNewScreen2(), which would discourage backporting of + * the X Server patches to support the new loader interface. + */ +const struct __DriverAPIRec *globalDriverAPI = &driDriverAPI; + +/** * This is the first entrypoint in the driver called by the DRI driver loader * after dlopen()ing it. * @@ -102,7 +119,7 @@ dri2CreateNewScreen2(int scrn, int fd, return NULL; /* By default, use the global driDriverAPI symbol (non-megadrivers). */ - psp->driver = &driDriverAPI; + psp->driver = globalDriverAPI; /* If the driver exposes its vtable through its extensions list * (megadrivers), use that instead. |