Merge "egl: handle failed eglMakeCurrent EGL_NO_CONTEXT" into oc-dev
am: 2153f5e317

Change-Id: I6c36e59dc595bd6a494561a49b98b0f2d479ecfe
diff --git a/opengl/libs/EGL/eglApi.cpp b/opengl/libs/EGL/eglApi.cpp
index 10f4e66..ba3a5f9 100644
--- a/opengl/libs/EGL/eglApi.cpp
+++ b/opengl/libs/EGL/eglApi.cpp
@@ -829,19 +829,15 @@
             egl_tls_t::setContext(EGL_NO_CONTEXT);
         }
     } else {
-        // Force return to current context for drivers that cannot handle errors
-        EGLBoolean restore_result = EGL_FALSE;
 
-        // get a reference to the old current objects
-        ContextRef _c2(dp.get(), cur_c);
-        SurfaceRef _d2(dp.get(), cur_c->draw);
-        SurfaceRef _r2(dp.get(), cur_c->read);
+        if (cur_c != NULL) {
+            // Force return to current context for drivers that cannot handle errors
+            EGLBoolean restore_result = EGL_FALSE;
+            // get a reference to the old current objects
+            ContextRef _c2(dp.get(), cur_c);
+            SurfaceRef _d2(dp.get(), cur_c->draw);
+            SurfaceRef _r2(dp.get(), cur_c->read);
 
-        if (cur_c == NULL) {
-            restore_result = dp->makeCurrent(c, cur_c,
-                    EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT,
-                    EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
-        } else {
             c = cur_c;
             impl_ctx = c->context;
             impl_draw = EGL_NO_SURFACE;
@@ -857,13 +853,13 @@
             restore_result = dp->makeCurrent(c, cur_c,
                     cur_c->draw, cur_c->read, cur_c->context,
                     impl_draw, impl_read, impl_ctx);
-        }
-        if (restore_result == EGL_TRUE) {
-            _c2.acquire();
-            _r2.acquire();
-            _d2.acquire();
-        } else {
-            ALOGE("Could not restore original EGL context");
+            if (restore_result == EGL_TRUE) {
+                _c2.acquire();
+                _r2.acquire();
+                _d2.acquire();
+            } else {
+                ALOGE("Could not restore original EGL context");
+            }
         }
         // this will ALOGE the error
         egl_connection_t* const cnx = &gEGLImpl;