1 files changed, 29 insertions, 15 deletions
diff --git a/src/egl/main/egldriver.h b/src/egl/main/egldriver.h
index 6c848eb35e..4a1a7ece8c 100644
--- a/src/egl/main/egldriver.h
+++ b/src/egl/main/egldriver.h
@@ -16,20 +16,30 @@ struct _egl_driver
    const char *Args;  /**< args to load this driver */
 
    const char *Name;  /**< name of this driver */
-   /**< probe a display to see if it is supported */
-   EGLBoolean (*Probe)(_EGLDriver *drv, _EGLDisplay *dpy);
-   /**< called before dlclose to release this driver */
+
+   /**
+    * Probe a display and return a score.
+    *
+    * Roughly,
+    *  50 means the driver supports the display;
+    *  90 means the driver can accelerate the display;
+    * 100 means a perfect match.
+    */
+   EGLint (*Probe)(_EGLDriver *drv, _EGLDisplay *dpy);
+
+   /**
+    * Release the driver resource.
+    *
+    * It is called before dlclose().
+    */
    void (*Unload)(_EGLDriver *drv);
 
    _EGLAPI API;  /**< EGL API dispatch table */
 };
 
 
-extern _EGLDriver *_eglMain(const char *args);
-
-
-extern const char *
-_eglPreloadDriver(_EGLDisplay *dpy);
+PUBLIC _EGLDriver *
+_eglMain(const char *args);
 
 
 extern _EGLDriver *
@@ -40,20 +50,24 @@ extern EGLBoolean
 _eglCloseDriver(_EGLDriver *drv, _EGLDisplay *dpy);
 
 
-void
-_eglUnloadDrivers(void);
+extern EGLBoolean
+_eglPreloadDrivers(void);
 
 
-extern _EGLDriver *
-_eglLookupDriver(EGLDisplay d);
+extern void
+_eglUnloadDrivers(void);
 
 
-extern void
+PUBLIC void
 _eglInitDriverFallbacks(_EGLDriver *drv);
 
 
-extern EGLint
-_eglFindAPIs(void);
+PUBLIC void
+_eglSetProbeCache(EGLint key, const void *val);
+
+
+PUBLIC const void *
+_eglGetProbeCache(EGLint key);
 
 
 #endif /* EGLDRIVER_INCLUDED */