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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