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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
#ifndef QOPENGLPROGRAMBINARYCACHE_P_H
#define QOPENGLPROGRAMBINARYCACHE_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.
//
#include <QtGui/qtguiglobal.h>
#include <QtCore/qcache.h>
#include <QtCore/qmutex.h>
#include <QtCore/QLoggingCategory>
#include <QtGui/private/qopenglcontext_p.h>
#include <rhi/qshader.h>
QT_BEGIN_NAMESPACE
// These classes are also used by the OpenGL backend of QRhi. They must
// therefore stay independent from QOpenGLShader(Program). Must rely only on
// QOpenGLContext/Functions.
Q_DECLARE_EXPORTED_LOGGING_CATEGORY(lcOpenGLProgramDiskCache, Q_GUI_EXPORT)
class Q_GUI_EXPORT QOpenGLProgramBinaryCache
{
public:
struct Q_GUI_EXPORT ShaderDesc {
ShaderDesc() { }
ShaderDesc(QShader::Stage stage, const QByteArray &source = QByteArray())
: stage(stage), source(source)
{ }
QShader::Stage stage;
QByteArray source;
};
struct Q_GUI_EXPORT ProgramDesc {
QList<ShaderDesc> shaders;
QByteArray cacheKey() const;
};
QOpenGLProgramBinaryCache();
bool load(const QByteArray &cacheKey, uint programId);
void save(const QByteArray &cacheKey, uint programId);
private:
QString cacheFileName(const QByteArray &cacheKey) const;
bool verifyHeader(const QByteArray &buf) const;
bool setProgramBinary(uint programId, uint blobFormat, const void *p, uint blobSize);
QString m_globalCacheDir;
QString m_localCacheDir;
QString m_currentCacheDir;
bool m_cacheWritable;
struct MemCacheEntry {
MemCacheEntry(const void *p, int size, uint format)
: blob(reinterpret_cast<const char *>(p), size),
format(format)
{ }
QByteArray blob;
uint format;
};
QCache<QByteArray, MemCacheEntry> m_memCache;
#if QT_CONFIG(opengles2)
void (QOPENGLF_APIENTRYP programBinaryOES)(GLuint program, GLenum binaryFormat, const GLvoid *binary, GLsizei length);
void (QOPENGLF_APIENTRYP getProgramBinaryOES)(GLuint program, GLsizei bufSize, GLsizei *length, GLenum *binaryFormat, GLvoid *binary);
void initializeProgramBinaryOES(QOpenGLContext *context);
bool m_programBinaryOESInitialized = false;
#endif
QMutex m_mutex;
};
// While unlikely, one application can in theory use contexts with different versions
// or profiles. Therefore any version- or extension-specific checks must be done on a
// per-context basis, not just once per process. QOpenGLSharedResource enables this,
// although it's once-per-sharing-context-group, not per-context. Still, this should
// be good enough in practice.
class Q_GUI_EXPORT QOpenGLProgramBinarySupportCheck : public QOpenGLSharedResource
{
public:
QOpenGLProgramBinarySupportCheck(QOpenGLContext *context);
void invalidateResource() override { }
void freeResource(QOpenGLContext *) override { }
bool isSupported() const { return m_supported; }
private:
bool m_supported;
};
class QOpenGLProgramBinarySupportCheckWrapper
{
public:
QOpenGLProgramBinarySupportCheck *get(QOpenGLContext *context)
{
return m_resource.value<QOpenGLProgramBinarySupportCheck>(context);
}
private:
QOpenGLMultiGroupSharedResource m_resource;
};
QT_END_NAMESPACE
#endif
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