Evas GL: Don't call eglMakeCurrent if already null

If the current context & surface are already null, avoid
calling eglMakeCurrent again, since it can return an error
(EGL_FALSE but with no error code, thanks Nvidia).

diff --git a/src/modules/evas/engines/gl_x11/evas_engine.c b/src/modules/evas/engines/gl_x11/evas_engine.c
index bdbd86f..930092d 100644 (file)
--- a/src/modules/evas/engines/gl_x11/evas_engine.c
+++ b/src/modules/evas/engines/gl_x11/evas_engine.c
@@ -179,6 +179,10 @@ evgl_eng_make_current(void *data, void *surface, void *context, int flush)
 
    if ((!context) && (!surface))
      {
+        if (!eglGetCurrentContext() &&
+            !eglGetCurrentSurface(EGL_READ) &&
+            !eglGetCurrentSurface(EGL_DRAW))
+          return 1;
         ret = eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
         if (!ret)
           {