/*
    Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz>

    This file is part of Magnum.

    Magnum is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License version 3
    only, as published by the Free Software Foundation.

    Magnum is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    GNU Lesser General Public License version 3 for more details.
*/

#include "IndexedMesh.h"

#include <Utility/Debug.h>

namespace Magnum {

void IndexedMesh::draw() {
    /* Vertex array must be bound before finalization */
    #ifndef MAGNUM_TARGET_GLES
    bind();
    #endif

    finalize();

    /* Buffers must be bound after initialization */
    #ifdef MAGNUM_TARGET_GLES
    bind();
    _indexBuffer.bind();
    #endif

    /** @todo Start at given index */
    glDrawElements(static_cast<GLenum>(primitive()), _indexCount, static_cast<GLenum>(_indexType), nullptr);

    unbind();
}

#ifndef DOXYGEN_GENERATING_OUTPUT
void IndexedMesh::finalize() {
    if(isFinalized()) return;

    CORRADE_ASSERT(_indexCount, "IndexedMesh: the mesh has zero index count!", );

    /* Finalize attribute positions */
    Mesh::finalize();

    /* Bind index buffer to VAO too */
    #ifndef MAGNUM_TARGET_GLES
    _indexBuffer.bind();
    #endif
}
#endif

}