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/****************************************************************************
**
** Copyright (C) 2008-2016 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#pragma once
#ifndef QT3DS_RENDER_LOAD_DDS_H
#define QT3DS_RENDER_LOAD_DDS_H
namespace qt3ds {
namespace render {
/** The maximum number of mipmap levels (per texture or per cubemap face) */
#define QT3DS_DDS_MAX_MIPMAPS (16)
/** The number of cubemap faces that must exist in a cubemap-bearing DDS file */
#define QT3DS_DDS_NUM_CUBEMAP_FACES (6)
/** The master DDS structure for loading and saving
This is the master DDS structure. It shouldn't be allocated by hand,
always use NVHHDDSAlloc/NVHHDDSAllocData/NVHHDDSFree to manage them properly.
*/
struct Qt3DSDDSImage
{
/** Width of the overall texture in texels */
int width;
/** Height of the overall texture in texels */
int height;
/** Number of color/alpha components per texel 1-4 */
int components;
/** The GL type of each color component (noncompressed textures only) */
int componentFormat;
/** The number of bytes per pixel (noncompressed textures only) */
int bytesPerPixel;
/** Nonzero if the format is DXT-compressed */
int compressed;
/** The number of levels in the mipmap pyramid (including the base level) */
int numMipmaps;
/** If nonzero, then the file contains 6 cubemap faces */
int cubemap;
/** The format of the loaded texture data */
int format;
/** The GL internal format of the loaded texture data(compressed textures only) */
int internalFormat;
/** Nonzero if the texture data includes alpha */
int alpha;
/** Base of the allocated block of all texel data */
void *dataBlock;
/** Pointers to the mipmap levels for the texture or each cubemap face */
void *data[QT3DS_DDS_MAX_MIPMAPS * QT3DS_DDS_NUM_CUBEMAP_FACES];
/** Array of sizes of the mipmap levels for the texture or each cubemap face */
int size[QT3DS_DDS_MAX_MIPMAPS * QT3DS_DDS_NUM_CUBEMAP_FACES];
/** Array of widths of the mipmap levels for the texture or each cubemap face */
int mipwidth[QT3DS_DDS_MAX_MIPMAPS * QT3DS_DDS_NUM_CUBEMAP_FACES];
/** Array of heights of the mipmap levels for the texture or each cubemap face */
int mipheight[QT3DS_DDS_MAX_MIPMAPS * QT3DS_DDS_NUM_CUBEMAP_FACES];
};
}
}
#endif
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