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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
//
// 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 QOPENGLTEXTURECACHE_P_H
#define QOPENGLTEXTURECACHE_P_H
#include <QtOpenGL/qtopenglglobal.h>
#include <QHash>
#include <QObject>
#include <QCache>
#include <private/qopenglcontext_p.h>
#include <private/qopengltextureuploader_p.h>
#include <QtCore/qmutex.h>
QT_BEGIN_NAMESPACE
class QOpenGLCachedTexture;
class Q_OPENGL_EXPORT QOpenGLTextureCache : public QOpenGLSharedResource
{
public:
static QOpenGLTextureCache *cacheForContext(QOpenGLContext *context);
QOpenGLTextureCache(QOpenGLContext *);
~QOpenGLTextureCache();
enum class BindResultFlag : quint8 {
NewTexture = 0x01
};
Q_DECLARE_FLAGS(BindResultFlags, BindResultFlag)
struct BindResult {
GLuint id;
BindResultFlags flags;
};
BindResult bindTexture(QOpenGLContext *context, const QPixmap &pixmap,
QOpenGLTextureUploader::BindOptions options = QOpenGLTextureUploader::PremultipliedAlphaBindOption);
BindResult bindTexture(QOpenGLContext *context, const QImage &image,
QOpenGLTextureUploader::BindOptions options = QOpenGLTextureUploader::PremultipliedAlphaBindOption);
void invalidate(qint64 key);
void invalidateResource() override;
void freeResource(QOpenGLContext *ctx) override;
private:
BindResult bindTexture(QOpenGLContext *context, qint64 key, const QImage &image, QOpenGLTextureUploader::BindOptions options);
QMutex m_mutex;
QCache<quint64, QOpenGLCachedTexture> m_cache;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QOpenGLTextureCache::BindResultFlags)
class QOpenGLCachedTexture
{
public:
QOpenGLCachedTexture(GLuint id, QOpenGLTextureUploader::BindOptions options, QOpenGLContext *context);
~QOpenGLCachedTexture() { m_resource->free(); }
GLuint id() const { return m_resource->id(); }
QOpenGLTextureUploader::BindOptions options() const { return m_options; }
private:
QOpenGLSharedResourceGuard *m_resource;
QOpenGLTextureUploader::BindOptions m_options;
};
QT_END_NAMESPACE
#endif
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