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// Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qshadergraphloader_p.h"
#include "qshadernodesloader_p.h"
#include <QtCore/qdebug.h>
#include <QtCore/qiodevice.h>
#include <QtCore/qjsonarray.h>
#include <QtCore/qjsondocument.h>
#include <QtCore/qjsonobject.h>
#include <QtCore/qmetaobject.h>
QT_BEGIN_NAMESPACE
namespace Qt3DRender
{
void qt_register_ShaderLanguage_enums();
QShaderGraphLoader::QShaderGraphLoader() noexcept
: m_status(Null),
m_device(nullptr)
{
qt_register_ShaderLanguage_enums();
}
QShaderGraphLoader::Status QShaderGraphLoader::status() const noexcept
{
return m_status;
}
QShaderGraph QShaderGraphLoader::graph() const noexcept
{
return m_graph;
}
QIODevice *QShaderGraphLoader::device() const noexcept
{
return m_device;
}
void QShaderGraphLoader::setDevice(QIODevice *device) noexcept
{
m_device = device;
m_graph = QShaderGraph();
m_status = !m_device ? Null
: (m_device->openMode() & QIODevice::ReadOnly) ? Waiting
: Error;
}
QHash<QString, QShaderNode> QShaderGraphLoader::prototypes() const noexcept
{
return m_prototypes;
}
void QShaderGraphLoader::setPrototypes(const QHash<QString, QShaderNode> &prototypes) noexcept
{
m_prototypes = prototypes;
}
void QShaderGraphLoader::load()
{
if (m_status == Error)
return;
auto error = QJsonParseError();
const QJsonDocument document = QJsonDocument::fromJson(m_device->readAll(), &error);
if (error.error != QJsonParseError::NoError) {
qWarning() << "Invalid JSON document:" << error.errorString();
m_status = Error;
return;
}
if (document.isEmpty() || !document.isObject()) {
qWarning() << "Invalid JSON document, root should be an object";
m_status = Error;
return;
}
const QJsonObject root = document.object();
const QJsonValue nodesValue = root.value(QStringLiteral("nodes"));
if (!nodesValue.isArray()) {
qWarning() << "Invalid nodes property, should be an array";
m_status = Error;
return;
}
const QJsonValue edgesValue = root.value(QStringLiteral("edges"));
if (!edgesValue.isArray()) {
qWarning() << "Invalid edges property, should be an array";
m_status = Error;
return;
}
bool hasError = false;
const QJsonValue prototypesValue = root.value(QStringLiteral("prototypes"));
if (!prototypesValue.isUndefined()) {
if (prototypesValue.isObject()) {
QShaderNodesLoader loader;
loader.load(prototypesValue.toObject());
m_prototypes.insert(loader.nodes());
} else {
qWarning() << "Invalid prototypes property, should be an object";
m_status = Error;
return;
}
}
const QJsonArray nodes = nodesValue.toArray();
for (const QJsonValue nodeValue : nodes) {
if (!nodeValue.isObject()) {
qWarning() << "Invalid node found";
hasError = true;
continue;
}
const QJsonObject nodeObject = nodeValue.toObject();
const QString uuidString = nodeObject.value(QStringLiteral("uuid")).toString();
const QUuid uuid = QUuid(uuidString);
if (uuid.isNull()) {
qWarning() << "Invalid UUID found in node:" << uuidString;
hasError = true;
continue;
}
const QString type = nodeObject.value(QStringLiteral("type")).toString();
if (!m_prototypes.contains(type)) {
qWarning() << "Unsupported node type found:" << type;
hasError = true;
continue;
}
const QJsonArray layersArray = nodeObject.value(QStringLiteral("layers")).toArray();
auto layers = QStringList();
for (const QJsonValue layerValue : layersArray)
layers.append(layerValue.toString());
QShaderNode node = m_prototypes.value(type);
node.setUuid(uuid);
node.setLayers(layers);
const QJsonValue parametersValue = nodeObject.value(QStringLiteral("parameters"));
if (parametersValue.isObject()) {
const QJsonObject parametersObject = parametersValue.toObject();
for (const QString ¶meterName : parametersObject.keys()) {
const QJsonValue parameterValue = parametersObject.value(parameterName);
if (parameterValue.isObject()) {
const QJsonObject parameterObject = parameterValue.toObject();
const QString type = parameterObject.value(QStringLiteral("type")).toString();
const QMetaType typeId = QMetaType::fromName(type.toUtf8());
const QString value = parameterObject.value(QStringLiteral("value")).toString();
auto variant = QVariant(value);
if (typeId.flags() & QMetaType::IsEnumeration) {
const QMetaObject *metaObject = typeId.metaObject();
const char *className = metaObject->className();
const QByteArray enumName = type.mid(static_cast<int>(qstrlen(className)) + 2).toUtf8();
const QMetaEnum metaEnum = metaObject->enumerator(metaObject->indexOfEnumerator(enumName));
const int enumValue = metaEnum.keyToValue(value.toUtf8());
variant = QVariant(enumValue);
variant.convert(typeId);
} else {
variant.convert(typeId);
}
node.setParameter(parameterName, variant);
} else {
node.setParameter(parameterName, parameterValue.toVariant());
}
}
}
m_graph.addNode(node);
}
const QJsonArray edges = edgesValue.toArray();
for (const QJsonValue edgeValue : edges) {
if (!edgeValue.isObject()) {
qWarning() << "Invalid edge found";
hasError = true;
continue;
}
const QJsonObject edgeObject = edgeValue.toObject();
const QString sourceUuidString = edgeObject.value(QStringLiteral("sourceUuid")).toString();
const QUuid sourceUuid = QUuid(sourceUuidString);
if (sourceUuid.isNull()) {
qWarning() << "Invalid source UUID found in edge:" << sourceUuidString;
hasError = true;
continue;
}
const QString sourcePort = edgeObject.value(QStringLiteral("sourcePort")).toString();
const QString targetUuidString = edgeObject.value(QStringLiteral("targetUuid")).toString();
const QUuid targetUuid = QUuid(targetUuidString);
if (targetUuid.isNull()) {
qWarning() << "Invalid target UUID found in edge:" << targetUuidString;
hasError = true;
continue;
}
const QString targetPort = edgeObject.value(QStringLiteral("targetPort")).toString();
const QJsonArray layersArray = edgeObject.value(QStringLiteral("layers")).toArray();
auto layers = QStringList();
for (const QJsonValue layerValue : layersArray)
layers.append(layerValue.toString());
auto edge = QShaderGraph::Edge();
edge.sourceNodeUuid = sourceUuid;
edge.sourcePortName = sourcePort;
edge.targetNodeUuid = targetUuid;
edge.targetPortName = targetPort;
edge.layers = layers;
m_graph.addEdge(edge);
}
if (hasError) {
m_status = Error;
m_graph = QShaderGraph();
} else {
m_status = Ready;
}
}
}
QT_END_NAMESPACE