Description</h2><p>
            <code class="function">glCompressedTexImage2D</code> defines a two-dimensional texture image
            or cube-map texture image using compressed image data from client memory.  The texture
            image is decoded according to the definition of the
            <em class="parameter"><code>internalformat</code></em>.  In addition to the paletted formats
            described below, OpenGL ES provides a mechanism to obtain symbolic constants for
            other formats 