Checks level on relevant gl calls against implementation maximum.

src/common/version.h

 #define MAJOR_VERSION 0
 #define MINOR_VERSION 0
 #define BUILD_VERSION 0
-#define BUILD_REVISION 884
+#define BUILD_REVISION 885
 
 #define STRINGIFY(x) #x
 #define MACRO_STRINGIFY(x) STRINGIFY(x)

src/libGLESv2/libGLESv2.cpp

@@ -1100,6 +1100,11 @@ void __stdcall glCopyTexImage2D(GLenum target, GLint level, GLenum internalforma
 
         if (context)
         {
+            if (level > context->getMaximumTextureLevel())
+            {
+                return error(GL_INVALID_VALUE);
+            }
+
             switch (target)
             {
               case GL_TEXTURE_2D:
@@ -4765,6 +4770,11 @@ void __stdcall glTexImage2D(GLenum target, GLint level, GLint internalformat, GL
 
         if (context)
         {
+            if (level > context->getMaximumTextureLevel())
+            {
+                return error(GL_INVALID_VALUE);
+            }
+
             switch (target)
             {
               case GL_TEXTURE_2D: