Exposed glDrawRangeElements through VAO interface.

include/ACGL/OpenGL/Objects/VertexArrayObject.hh

@@ -312,6 +312,12 @@ public:
         glMultiDrawElements( mMode, count, type, indices, primcount );
     }
 
+    inline void drawRangeElements( GLuint start,
+                                   GLsizei count )
+    {
+        glDrawRangeElements( mMode, start, getIndexCount(), count, getIndexType(), nullptr);
+    }
+
 #if (ACGL_OPENGL_VERSION >= 32)
     inline void multiDrawElements( GLsizei *count, GLenum type, GLvoid **indices, GLsizei primcount, GLint *basevertex ) const
     {