#ifndef _VKTIMAGETEXTURE_HPP
#define _VKTIMAGETEXTURE_HPP
/*------------------------------------------------------------------------
 * Vulkan Conformance Tests
 * ------------------------
 *
 * Copyright (c) 2016 The Khronos Group Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 *//*!
 * \file
 * \brief Texture utility class
 *//*--------------------------------------------------------------------*/

#include "tcuDefs.hpp"
#include "vktImageTestsUtil.hpp"

namespace vkt
{
namespace image
{

//! Texture buffer/image abstraction. Helps managing size, number of layers and number of mipmap levels.
class Texture
{
public:
						Texture			(const ImageType imageType, const tcu::IVec3& imageLayerSize, const int layers, const int samples = 1, const int levels = 1);
						Texture			(const Texture& other, const int samples);

	ImageType			type			(void) const { return m_type; }			//!< Texture type
	tcu::IVec3			layerSize		(const int mipLevel = 0) const;			//!< Size of a single layer for mipmap level 0
	int					numLayers		(void) const { return m_numLayers; }	//!< Number of array layers (for array and cube types)
	int					numSamples		(void) const { return m_numSamples; }	//!< Number of samples per texel (multisampled texture)

	tcu::IVec3			size			(const int mipLevel = 0) const;			//!< Size including number of layers in additional dimension (e.g. z in 2d texture) for mipmap level 0
	int					dimension		(void) const;							//!< Coordinate dimension used for addressing (e.g. 3 (x,y,z) for 2d array)
	int					layerDimension	(void) const;							//!< Coordinate dimension used for addressing a single layer (e.g. 2 (x,y) for 2d array)

	int					numMipmapLevels	(void) const { return m_numMipmapLevels; }	//!< Number of levels of detail (mipmap texture)

private:
	void				checkInvariants	(void) const;

	const tcu::IVec3	m_layerSize;
	const ImageType		m_type;
	const int			m_numLayers;
	const int			m_numSamples;
	const int			m_numMipmapLevels;
};

inline bool isCube (const Texture& texture)
{
	return texture.type() == IMAGE_TYPE_CUBE || texture.type() == IMAGE_TYPE_CUBE_ARRAY;
}

} // image
} // vkt

#endif // _VKTIMAGETEXTURE_HPP