diff --git a/services/surfaceflinger/RenderEngine/RenderEngine.cpp b/services/surfaceflinger/RenderEngine/RenderEngine.cpp
index 1d22f84..332f2e0 100644
--- a/services/surfaceflinger/RenderEngine/RenderEngine.cpp
+++ b/services/surfaceflinger/RenderEngine/RenderEngine.cpp
@@ -187,6 +187,14 @@
     return mEGLContext;
 }
 
+bool RenderEngine::setCurrentSurface(EGLSurface surface) {
+    return eglMakeCurrent(mEGLDisplay, surface, surface, mEGLContext) == EGL_TRUE;
+}
+
+void RenderEngine::resetCurrentSurface() {
+    eglMakeCurrent(mEGLDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+}
+
 void RenderEngine::checkErrors() const {
     do {
         // there could be more than one error flag
diff --git a/services/surfaceflinger/RenderEngine/RenderEngine.h b/services/surfaceflinger/RenderEngine/RenderEngine.h
index b28454a..bd5eac2 100644
--- a/services/surfaceflinger/RenderEngine/RenderEngine.h
+++ b/services/surfaceflinger/RenderEngine/RenderEngine.h
@@ -99,6 +99,9 @@
         int getStatus() const;
     };
 
+    bool setCurrentSurface(EGLSurface surface);
+    void resetCurrentSurface();
+
     // set-up
     virtual void checkErrors() const;
     virtual void setViewportAndProjection(size_t vpw, size_t vph,