/*
 Copyright (c) 2013 yvt
 
 This file is part of OpenSpades.
 
 OpenSpades 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.
 
 OpenSpades 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 OpenSpades.  If not, see <http://www.gnu.org/licenses/>.
 
 */

#pragma once

#include "IGLDevice.h"
#include <vector>
#include <stdint.h>

namespace spades {
	namespace client {
		class GameMap;
	}
	namespace draw {
		class GLRenderer;
		class IGLDevice;
		class GLProgram;
		class GLWaterRenderer{
			class IWaveTank;
			class StandardWaveTank;
			class FFTWaveTank;
			
			GLRenderer *renderer;
			IGLDevice *device;
			client::GameMap *map;
			
			std::vector<IWaveTank *> waveTanks;
			
			int w, h;
			
			size_t updateBitmapPitch;
			std::vector<uint32_t> updateBitmap;
			
			std::vector<uint32_t> bitmap;
			
			IGLDevice::UInteger texture; // water color
			std::vector<IGLDevice::UInteger> waveTextures; // bumpmap
			
			struct Vertex;
			
			IGLDevice::UInteger buffer;
			IGLDevice::UInteger idxBuffer;
			size_t numIndices;
			
			IGLDevice::UInteger tempFramebuffer;
			IGLDevice::UInteger tempDepthTexture;
			
			IGLDevice::UInteger occlusionQuery;
			
			GLProgram *program;
			
			void BuildVertices();
			void MarkUpdate(int x, int y);
		public:
			GLWaterRenderer(GLRenderer *, client::GameMap *map);
			~GLWaterRenderer();
			
			static void PreloadShaders(GLRenderer *);
			
			void Render();
			
			void Update(float dt);
			
			void GameMapChanged(int x, int y, int z, client::GameMap *);
			
			IGLDevice::UInteger GetOcclusionQuery() {
				return occlusionQuery;
			}
		};
	}
}