/*
 Copyright (C) 2010-2017 Kristian Duske

 This file is part of TrenchBroom.

 TrenchBroom is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 TrenchBroom 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 General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with TrenchBroom. If not, see <http://www.gnu.org/licenses/>.
 */

#pragma once

#include <vector>

namespace TrenchBroom {
namespace Renderer {
class Renderable;
class DirectRenderable;
class IndexedRenderable;
class RenderContext;
class VboManager;

class RenderBatch {
private:
  VboManager& m_vboManager;

  class IndexedRenderableWrapper;

  using RenderableList = std::vector<Renderable*>;
  using DirectRenderableList = std::vector<DirectRenderable*>;
  using IndexedRenderableList = std::vector<IndexedRenderable*>;

  DirectRenderableList m_directRenderables;
  IndexedRenderableList m_indexedRenderables;

  RenderableList m_batch;
  RenderableList m_oneshots;

public:
  explicit RenderBatch(VboManager& vboManager);
  ~RenderBatch();

  void add(Renderable* renderable);
  void add(DirectRenderable* renderable);
  void add(IndexedRenderable* renderable);

  /**
   * Same as `add()`, but takes ownership of the given renderable and deletes it in
   * `~RenderBatch`.
   */
  void addOneShot(Renderable* renderable);
  void addOneShot(DirectRenderable* renderable);
  void addOneShot(IndexedRenderable* renderable);

  void render(RenderContext& renderContext);

private:
  void doAdd(Renderable* renderable);

  void prepareRenderables();

  void renderRenderables(RenderContext& renderContext);
};
} // namespace Renderer
} // namespace TrenchBroom
