From fd33dfcd7321346631cd9237b5ae2993c29f9ca5 Mon Sep 17 00:00:00 2001
From: Leith Bade <leith@mapbox.com>
Date: Tue, 27 Oct 2015 12:34:32 +1100
Subject: [PATCH] [android] Restore old GL context after createSurface Fixes
 #2807

---
 platform/android/native_map_view.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/platform/android/native_map_view.cpp b/platform/android/native_map_view.cpp
index 9c4d4b1d1..0a69f2d2d 100644
--- a/platform/android/native_map_view.cpp
+++ b/platform/android/native_map_view.cpp
@@ -398,6 +398,11 @@ void NativeMapView::createSurface(ANativeWindow *window_) {
     if (!firstTime) {
         firstTime = true;
 
+        EGLDisplay oldDisplay = eglGetCurrentDisplay();
+        EGLSurface oldReadSurface = eglGetCurrentSurface(EGL_READ);
+        EGLSurface oldDrawSurface = eglGetCurrentSurface(EGL_DRAW);
+        EGLContext oldContext = eglGetCurrentContext();
+
         if (!eglMakeCurrent(display, surface, surface, context)) {
             mbgl::Log::Error(mbgl::Event::OpenGL, "eglMakeCurrent() returned error %d",
                              eglGetError());
@@ -418,7 +423,7 @@ void NativeMapView::createSurface(ANativeWindow *window_) {
              return reinterpret_cast<mbgl::gl::glProc>(eglGetProcAddress(name));
         });
 
-        if (!eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT)) {
+        if (!eglMakeCurrent(oldDisplay, oldDrawSurface, oldReadSurface, oldContext)) {
             mbgl::Log::Error(mbgl::Event::OpenGL,
                              "eglMakeCurrent(EGL_NO_CONTEXT) returned error %d", eglGetError());
             throw new std::runtime_error("eglMakeCurrent() failed");