From 8b0e1a179836ef4b97879831240db704eae057ae Mon Sep 17 00:00:00 2001
From: Benjamin Franzke <benjaminfranzke@googlemail.com>
Date: Mon, 2 May 2011 13:16:28 +0200
Subject: egl_dri2: Implement EGL_MESA_reusable_sync_eventfd

---
 src/egl/drivers/dri2/egl_dri2.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index f60b17e60f..7beae1cb39 100644
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -474,6 +474,10 @@ dri2_create_screen(_EGLDisplay *disp)
    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
 #endif
 
+#if EGL_MESA_reusable_sync_eventfd
+   disp->Extensions.MESA_reusable_sync_eventfd = EGL_TRUE;
+#endif
+
    return EGL_TRUE;
 
  cleanup_dri_screen:
@@ -1283,6 +1287,23 @@ dri2_create_sync(_EGLDriver *drv, _EGLDisplay *disp,
 }
 #endif
 
+#ifdef EGL_MESA_reusable_sync_eventfd
+
+static EGLint
+dri2_create_sync_eventfd(_EGLDriver *drv, _EGLDisplay *disp, _EGLSync *sync)
+{
+   struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
+
+   if (dri2_sync->base.Type != EGL_SYNC_REUSABLE_KHR) {
+      _eglError(EGL_BAD_MATCH, "eglCreateSyncEventfdMESA");
+      return -1;
+   }
+
+   return dup(dri2_sync->epoll_fd);
+}
+
+#endif
+
 static void
 dri2_unload(_EGLDriver *drv)
 {
@@ -1380,6 +1401,10 @@ _EGL_MAIN(const char *args)
    dri2_drv->base.API.SignalSyncKHR = dri2_signal_sync;
 #endif
 
+#ifdef EGL_MESA_reusable_sync_eventfd
+   dri2_drv->base.API.CreateSyncEventfdMESA = dri2_create_sync_eventfd;
+#endif
+
    dri2_drv->base.Name = "DRI2";
    dri2_drv->base.Unload = dri2_unload;
 
-- 
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