Added PackCompiler
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Digital Artifex
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#ifndef PACKCOMPILER_H
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#define PACKCOMPILER_H
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#include <QDir>
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#include <QFile>
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#include <QFuture>
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#include <QtConcurrent/QtConcurrentRun>
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#include <QStandardPaths>
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#include <QProcess>
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#include <QRegularExpression>
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#include <QMutex>
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#include <QMutexLocker>
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#include <QImage>
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#include <QRgb>
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#include <QColor>
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#include <QtQuick/QQuickItem>
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#include <qdir.h>
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#include <qobject.h>
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#include <qtmetamacros.h>
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#include <QPainter>
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#include <QtConcurrent/qtconcurrentrun.h>
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#include <qcontainerfwd.h>
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#include <qmargins.h>
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#include <qstandardpaths.h>
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#include <qtmetamacros.h>
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#include <qurl.h>
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#include "common/komplex_global.h"
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/**
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* @brief The PackCompiler class
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* [1] Extract Pack (GZip)
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* [2] Verify directory is a pack and has shaders
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* [3] Load shader code
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* [4] Append Common and Global files, if they exist
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* [5] Add uniform and replace variable use
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* [6] Run C Preprocessor (cpp -P) to process macros
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* [7] Append version macro
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* [8] Compile with Qt Shader Baker
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*/
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class KOMPLEX_EXPORT PackCompiler : public QObject
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{
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Q_OBJECT
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QML_ELEMENT
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public:
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enum State
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{
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Idle,
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Compiling,
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Complete,
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Error
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};
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Q_ENUM(State)
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explicit PackCompiler(QObject *parent = nullptr);
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~PackCompiler() override;
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auto compilerOutput() const -> const QString & { return m_compilerOutput; }
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auto progress() -> qreal { return m_progress; }
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auto currentStep() -> qint64 { return m_currentStep; }
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auto totalSteps() -> qint64 { return m_totalSteps; }
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auto errorTitle() const -> const QString & { return m_errorTitle; }
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auto errorMessage() const -> const QString & { return m_errorMessage; }
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auto reset() -> void;
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auto process(const QUrl &uri) -> QFuture<QUrl>;
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auto status() const -> const QString & { return m_status; }
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auto state() const -> State { return m_state; }
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protected:
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/**
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* @brief prepareShaders
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* Scans the pack's shader directory and sends each file to
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* prepareFile()
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* @param uri
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* Directory to prepare
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*/
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auto prepareShaders(const QUrl &uri) noexcept(false) -> void;
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/**
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* @brief prepareFile
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* Prepares the individual file by appending the header, footer,
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* common files and replacing standard variable names
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* @param uri
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*/
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auto prepareFile(const QUrl &uri) noexcept(false) -> void;
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/**
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* @brief validateDirectory
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*
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* @param uri
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* @return true
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* @return false
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*/
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auto validateDirectory(const QUrl &uri) -> bool;
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auto extract(const QUrl &sourceUri, const QUrl &destinationUri) noexcept(false) -> void;
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auto copyFile(const QUrl &sourceUri, const QUrl &destinationUri) noexcept(false) -> void;
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auto compile(const QUrl &uri) noexcept(false) -> void;
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auto preprocess(const QUrl &uri) noexcept(false) -> void;
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auto appendVersion(const QUrl &uri) noexcept(false) -> void;
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auto compileShader(const QUrl &uri) noexcept(false) -> void;
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auto loadCommonFragmentData(const QUrl &uri) -> QByteArray;
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auto loadCommonVertexData(const QUrl &uri) -> QByteArray;
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auto loadGlobalData(const QUrl &uri) -> QByteArray;
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auto setError(const QString &title, const QString &message, const QUrl &uri = {}) -> void;
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auto setCompilerOutput(const QString &compilerOutput) -> void;
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auto setState(State state) -> void;
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auto setProgress(qreal progress) -> void;
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auto setTotalSteps(qint64 steps) -> void;
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auto setCurrentStep(qint64 step) -> void;
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auto setStatus(const QString &status) -> void;
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auto incrementCompileStep() -> void;
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auto removeDirectory(const QUrl &uri) -> bool;
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signals:
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auto compilerOutputChanged() -> void;
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auto errorOcurred() -> void;
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auto errorTitleChanged() -> void;
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auto errorMessageChanged() -> void;
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auto stateChanged() -> void;
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auto progressChanged() -> void;
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auto currentStepChanged() -> void;
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auto totalStepsChanged() -> void;
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auto compileComplete(const QUrl &uri) -> void;
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auto statusChanged() -> void;
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auto packReady(const QString &) -> void;
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auto errorStepChanged() -> void;
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auto errorRatingChanged() -> void;
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private:
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static inline const QStringList m_updateVariables
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{
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QStringLiteral("iTime"),
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QStringLiteral("iTimeDelta"),
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QStringLiteral("iFrameRate"),
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QStringLiteral("iSampleRate"),
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QStringLiteral("iFrame"),
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QStringLiteral("iDate"),
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QStringLiteral("iMouse"),
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QStringLiteral("iResolution"),
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QStringLiteral("iColorTheme"),
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QStringLiteral("iChannelTime"),
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QStringLiteral("iChannelResolution")
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};
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static inline const QByteArray m_version
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{
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R"(#version 450)"
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};
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static inline const QString m_header
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{
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R"(layout(location = 0) in vec2 qt_TexCoord0;
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layout(location = 0) out vec4 fragColor;
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layout(std140, binding = 0) uniform buf {
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mat4 qt_Matrix;
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float qt_Opacity;
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float iTime;
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float iTimeDelta;
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float iFrameRate;
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float iSampleRate;
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int iFrame;
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vec4 iDate;
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vec4 iMouse;
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vec3 iResolution;
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float iChannelTime[4];
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vec3 iChannelResolution[4];
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vec4 iColorTheme[4];
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} ubuf;
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layout(binding = 1) uniform sampler2D iChannel0;
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layout(binding = 2) uniform sampler2D iChannel1;
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layout(binding = 3) uniform sampler2D iChannel2;
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layout(binding = 4) uniform sampler2D iChannel3;
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vec2 fragCoord = vec2(qt_TexCoord0.x, 1.0 - qt_TexCoord0.y) * ubuf.iResolution.xy;)"
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};
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static inline const QString m_footer
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{
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R"(void main() {
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vec4 color = vec4(0.0);
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mainImage(color, fragCoord);
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fragColor = color;
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})"
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};
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QString m_compilerOutput;
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QString m_errorMessage;
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QString m_errorTitle;
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QString m_status;
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State m_state;
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qreal m_currentStep = 0;
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qreal m_progress = 0;
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qreal m_totalSteps = 0;
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QMutex m_downloadMutex;
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static inline QList<QRegularExpression> m_variableExpressions;
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static inline const QRegularExpression m_commonFragmentExpression = QRegularExpression
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(
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QString("^common\\.frag$"),
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QRegularExpression::CaseInsensitiveOption
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);
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static inline const QRegularExpression m_commonVertexExpression = QRegularExpression
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(
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QString("^common\\.vert$"),
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QRegularExpression::CaseInsensitiveOption
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);
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static inline const QRegularExpression m_fragmentExpression = QRegularExpression
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(
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QString("^.{1,}\\.frag$"),
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QRegularExpression::CaseInsensitiveOption |
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QRegularExpression::DotMatchesEverythingOption
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);
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static inline const QRegularExpression m_vertexExpression = QRegularExpression
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(
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QString("^.{1,}\\.vert$"),
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QRegularExpression::CaseInsensitiveOption |
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QRegularExpression::DotMatchesEverythingOption
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);
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Q_PROPERTY(QString compilerOutput READ compilerOutput WRITE setCompilerOutput NOTIFY compilerOutputChanged FINAL)
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Q_PROPERTY(QString errorTitle READ errorTitle NOTIFY errorTitleChanged FINAL)
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Q_PROPERTY(QString errorMessage READ errorMessage NOTIFY errorMessageChanged FINAL)
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Q_PROPERTY(qreal progress READ progress NOTIFY progressChanged FINAL)
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Q_PROPERTY(qint64 totalSteps READ totalSteps NOTIFY totalStepsChanged FINAL)
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Q_PROPERTY(qint64 currentStep READ currentStep NOTIFY currentStepChanged FINAL)
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Q_PROPERTY(QString status READ status WRITE setStatus NOTIFY statusChanged FINAL)
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Q_PROPERTY(State state READ state NOTIFY stateChanged FINAL)
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};
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Q_DECLARE_METATYPE(PackCompiler)
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#endif // PackCompiler_H
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