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++ // Copyright (C) 2022 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++ // Qt-Security score:critical reason:data-parser
++
++ #include "shaderfeatures.h"
++ #include <QStringList>
++ #include <QDebug>
++
++ ShaderFeatures::ShaderFeatures()
++ {
++ }
++
++ // Browse the shaders and check which features are used in them.
++ void ShaderFeatures::update(const QString &vs, const QString &fs, const QString &qml)
++ {
++ QStringList vsList = vs.split("\n");
++ QStringList fsList = fs.split("\n");
++
++ QStringList code = vsList + fsList;
++ Features newFeatures = {};
++ m_gridMeshWidth = 1;
++ m_gridMeshHeight = 1;
++ for (const auto &line : code)
++ checkLine(line, newFeatures);
++
++ // iTime may also be used in QML side, without being used in shaders.
++ // In this case enable the time helpers creation.
++ if (qml.contains("iTime"))
++ newFeatures.setFlag(Time, true);
++
++ if (newFeatures != m_enabledFeatures)
++ m_enabledFeatures = newFeatures;
++ }
++
++ void ShaderFeatures::checkLine(const QString &line, Features &features) {
++ if (line.contains("iTime"))
++ features.setFlag(Time, true);
++
++ if (line.contains("iFrame"))
++ features.setFlag(Frame, true);
++
++ if (line.contains("iResolution"))
++ features.setFlag(Resolution, true);
++
++ if (line.contains("iSource"))
++ features.setFlag(Source, true);
++
++ if (line.contains("iMouse"))
++ features.setFlag(Mouse, true);
++
++ if (line.contains("fragCoord"))
++ features.setFlag(FragCoord, true);
++
++ if (line.contains("@mesh")) {
++ // Get the mesh size, remove "@mesh"
++ QString l = line.trimmed().sliced(5);
++ QStringList list = l.split(QLatin1Char(','));
++ if (list.size() >= 2) {
++ int w = list.at(0).trimmed().toInt();
++ int h = list.at(1).trimmed().toInt();
++ // Set size to max values
++ m_gridMeshWidth = std::max(m_gridMeshWidth, w);
++ m_gridMeshHeight = std::max(m_gridMeshHeight, h);
++ }
++ // If is bigger than default (1, 1), set the feature
++ if (m_gridMeshWidth > 1 || m_gridMeshHeight > 1)
++ features.setFlag(GridMesh, true);
++ }
++ if (line.contains("@blursources"))
++ features.setFlag(BlurSources, true);
++ }