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/****************************************************************************
**
** Copyright (C) 2013 Klaralvdalens Datakonsult AB (KDAB).
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or 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.GPL2 and 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-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QABSTRACTOPENGLTEXTURE_P_H
#define QABSTRACTOPENGLTEXTURE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#ifndef QT_NO_OPENGL
#include "private/qobject_p.h"
#include "qopengltexture.h"
#include "qopengl.h"
#include <cmath>
namespace {
inline double qLog2(const double x)
{
return std::log(x) / std::log(2.0);
}
}
QT_BEGIN_NAMESPACE
class QOpenGLContext;
class QOpenGLTextureHelper;
class QOpenGLFunctions;
class QOpenGLTexturePrivate
{
public:
QOpenGLTexturePrivate(QOpenGLTexture::Target textureTarget,
QOpenGLTexture *qq);
~QOpenGLTexturePrivate();
Q_DECLARE_PUBLIC(QOpenGLTexture)
void resetFuncs(QOpenGLTextureHelper *funcs);
void initializeOpenGLFunctions();
bool create();
void destroy();
void bind();
void bind(uint unit, QOpenGLTexture::TextureUnitReset reset = QOpenGLTexture::DontResetTextureUnit);
void release();
void release(uint unit, QOpenGLTexture::TextureUnitReset reset = QOpenGLTexture::DontResetTextureUnit);
bool isBound() const;
bool isBound(uint unit) const;
void allocateStorage(QOpenGLTexture::PixelFormat pixelFormat, QOpenGLTexture::PixelType pixelType);
void allocateMutableStorage(QOpenGLTexture::PixelFormat pixelFormat, QOpenGLTexture::PixelType pixelType);
void allocateImmutableStorage();
void setData(int mipLevel, int layer, QOpenGLTexture::CubeMapFace cubeFace,
QOpenGLTexture::PixelFormat sourceFormat, QOpenGLTexture::PixelType sourceType,
const void *data, const QOpenGLPixelTransferOptions * const options);
void setCompressedData(int mipLevel, int layer, QOpenGLTexture::CubeMapFace cubeFace,
int dataSize, const void *data,
const QOpenGLPixelTransferOptions * const options);
void setWrapMode(QOpenGLTexture::WrapMode mode);
void setWrapMode(QOpenGLTexture::CoordinateDirection direction, QOpenGLTexture::WrapMode mode);
QOpenGLTexture::WrapMode wrapMode(QOpenGLTexture::CoordinateDirection direction) const;
QOpenGLTexture *createTextureView(QOpenGLTexture::Target target, QOpenGLTexture::TextureFormat viewFormat,
int minimumMipmapLevel, int maximumMipmapLevel,
int minimumLayer, int maximumLayer) const;
int evaluateMipLevels() const;
inline int maximumMipLevelCount() const
{
return 1 + std::floor(qLog2(qMax(dimensions[0], qMax(dimensions[1], dimensions[2]))));
}
static inline int mipLevelSize(int mipLevel, int baseLevelSize)
{
return std::floor(double(qMax(1, baseLevelSize >> mipLevel)));
}
bool isUsingImmutableStorage() const;
QOpenGLTexture *q_ptr;
QOpenGLContext *context;
QOpenGLTexture::Target target;
QOpenGLTexture::BindingTarget bindingTarget;
GLuint textureId;
QOpenGLTexture::TextureFormat format;
QOpenGLTexture::TextureFormatClass formatClass;
int dimensions[3];
int requestedMipLevels;
int mipLevels;
int layers;
int faces;
int samples;
bool fixedSamplePositions;
int baseLevel;
int maxLevel;
QOpenGLTexture::SwizzleValue swizzleMask[4];
QOpenGLTexture::DepthStencilMode depthStencilMode;
QOpenGLTexture::ComparisonFunction comparisonFunction;
QOpenGLTexture::ComparisonMode comparisonMode;
QOpenGLTexture::Filter minFilter;
QOpenGLTexture::Filter magFilter;
float maxAnisotropy;
QOpenGLTexture::WrapMode wrapModes[3];
QVariantList borderColor;
float minLevelOfDetail;
float maxLevelOfDetail;
float levelOfDetailBias;
bool textureView;
bool autoGenerateMipMaps;
bool storageAllocated;
QOpenGLTextureHelper *texFuncs;
QOpenGLFunctions *functions;
QOpenGLTexture::Features features;
};
QT_END_NAMESPACE
#undef Q_CALL_MEMBER_FUNCTION
#endif // QT_NO_OPENGL
#endif // QABSTRACTOPENGLTEXTURE_P_H
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