/*
 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"

namespace spades {
	namespace draw {
		
		/** draws a quad for post filters.
		 * load program by yourself, and GLQuadRenderer does 
		 * setting vertex attributes and drawing. */
		class GLQuadRenderer {
			IGLDevice *device;
			
			IGLDevice::UInteger attrIndex;
		public:
			GLQuadRenderer(IGLDevice *);
			~GLQuadRenderer();
			
			/** specifies the index of an attribute that
			 * indicates the coordinate in [0, 1] */
			void SetCoordAttributeIndex(IGLDevice::UInteger);
			
			void Draw();
		};
	}
}