Added android version too

src/render/OpenGlExtensions.h

@@ -10,13 +10,17 @@
 #include "emscripten.h"
 #endif
 
-#ifdef __linux__
-#include <GL/gl.h>
-#include <GL/glu.h>
-#include <GLES3/gl3.h>
 
+#ifdef __ANDROID__
+    #include <GLES2/gl2.h>
+    #include <GLES2/gl2ext.h>
+#else
+    #ifdef __linux__
+    #include <GL/gl.h>
+    #include <GL/glu.h>
+    #include <GLES3/gl3.h>
+    #endif
 #endif
-
 #include <exception>
 #include <stdexcept>
 #if defined(WIN32) || defined(_WIN32) || defined(__WIN32__)