diff options
author | Jean-Michaël Celerier <jean-michael.celerier@kdab.com> | 2020-03-13 10:56:30 +0100 |
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committer | Jean-Michaël Celerier <jean-michael.celerier@kdab.com> | 2020-03-19 07:14:12 +0100 |
commit | a6ffce09ce6d4fd39fbb50eb58f7b5d1027f4d60 (patch) | |
tree | fc5bbe90e61ce562cc880b38011cda75eabc808d /src/render/shadergraph/qshadernodesloader.cpp | |
parent | 662c47d6e9c806f6c0d654e7ecce9a66a4f35154 (diff) |
Move shadergraph to Qt3D
Change-Id: I3ed10747175a58513933b29eac66ddf92fe87d07
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>
Diffstat (limited to 'src/render/shadergraph/qshadernodesloader.cpp')
-rw-r--r-- | src/render/shadergraph/qshadernodesloader.cpp | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/src/render/shadergraph/qshadernodesloader.cpp b/src/render/shadergraph/qshadernodesloader.cpp new file mode 100644 index 000000000..8346ed3d5 --- /dev/null +++ b/src/render/shadergraph/qshadernodesloader.cpp @@ -0,0 +1,292 @@ +/**************************************************************************** +** +** Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB). +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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 +{ +QShaderNodesLoader::QShaderNodesLoader() noexcept + : m_status(Null), + m_device(nullptr) +{ +} + +QShaderNodesLoader::Status QShaderNodesLoader::status() const noexcept +{ + return m_status; +} + +QHash<QString, QShaderNode> QShaderNodesLoader::nodes() const noexcept +{ + return m_nodes; +} + +QIODevice *QShaderNodesLoader::device() const noexcept +{ + return m_device; +} + +void QShaderNodesLoader::setDevice(QIODevice *device) noexcept +{ + m_device = device; + m_nodes.clear(); + m_status = !m_device ? Null + : (m_device->openMode() & QIODevice::ReadOnly) ? Waiting + : Error; +} + +void QShaderNodesLoader::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(); + load(root); +} + +void QShaderNodesLoader::load(const QJsonObject &prototypesObject) +{ + bool hasError = false; + + for (const QString &property : prototypesObject.keys()) { + const QJsonValue nodeValue = prototypesObject.value(property); + if (!nodeValue.isObject()) { + qWarning() << "Invalid node found"; + hasError = true; + break; + } + + const QJsonObject nodeObject = nodeValue.toObject(); + + auto node = QShaderNode(); + + const QJsonValue inputsValue = nodeObject.value(QStringLiteral("inputs")); + if (inputsValue.isArray()) { + const QJsonArray inputsArray = inputsValue.toArray(); + for (const QJsonValue &inputValue : inputsArray) { + if (!inputValue.isString()) { + qWarning() << "Non-string value in inputs"; + hasError = true; + break; + } + + auto input = QShaderNodePort(); + input.direction = QShaderNodePort::Input; + input.name = inputValue.toString(); + node.addPort(input); + } + } + + const QJsonValue outputsValue = nodeObject.value(QStringLiteral("outputs")); + if (outputsValue.isArray()) { + const QJsonArray outputsArray = outputsValue.toArray(); + for (const QJsonValue &outputValue : outputsArray) { + if (!outputValue.isString()) { + qWarning() << "Non-string value in outputs"; + hasError = true; + break; + } + + auto output = QShaderNodePort(); + output.direction = QShaderNodePort::Output; + output.name = outputValue.toString(); + node.addPort(output); + } + } + + 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 int typeId = QMetaType::type(type.toUtf8()); + + const QString value = parameterObject.value(QStringLiteral("value")).toString(); + auto variant = QVariant(value); + + if (QMetaType::typeFlags(typeId) & QMetaType::IsEnumeration) { + const QMetaObject *metaObject = QMetaType::metaObjectForType(typeId); + 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()); + } + } + } + + const QJsonValue rulesValue = nodeObject.value(QStringLiteral("rules")); + if (rulesValue.isArray()) { + const QJsonArray rulesArray = rulesValue.toArray(); + for (const QJsonValue &ruleValue : rulesArray) { + if (!ruleValue.isObject()) { + qWarning() << "Rules should be objects"; + hasError = true; + break; + } + + const QJsonObject ruleObject = ruleValue.toObject(); + + const QJsonValue formatValue = ruleObject.value(QStringLiteral("format")); + if (!formatValue.isObject()) { + qWarning() << "Format is mandatory in rules and should be an object"; + hasError = true; + break; + } + + const QJsonObject formatObject = formatValue.toObject(); + auto format = QShaderFormat(); + + const QJsonValue apiValue = formatObject.value(QStringLiteral("api")); + if (!apiValue.isString()) { + qWarning() << "Format API must be a string"; + hasError = true; + break; + } + + const QString api = apiValue.toString(); + format.setApi(api == QStringLiteral("OpenGLES") ? QShaderFormat::OpenGLES + : api == QStringLiteral("OpenGLNoProfile") ? QShaderFormat::OpenGLNoProfile + : api == QStringLiteral("OpenGLCoreProfile") ? QShaderFormat::OpenGLCoreProfile + : api == QStringLiteral("OpenGLCompatibilityProfile") ? QShaderFormat::OpenGLCompatibilityProfile + : api == QStringLiteral("VulkanFlavoredGLSL") ? QShaderFormat::VulkanFlavoredGLSL + : QShaderFormat::NoApi); + if (format.api() == QShaderFormat::NoApi) { + qWarning() << "Format API must be one of: OpenGLES, OpenGLNoProfile, OpenGLCoreProfile or OpenGLCompatibilityProfile, VulkanFlavoredGLSL"; + hasError = true; + break; + } + + const QJsonValue majorValue = formatObject.value(QStringLiteral("major")); + const QJsonValue minorValue = formatObject.value(QStringLiteral("minor")); + if (!majorValue.isDouble() || !minorValue.isDouble()) { + qWarning() << "Format major and minor version must be values"; + hasError = true; + break; + } + format.setVersion(QVersionNumber(majorValue.toInt(), minorValue.toInt())); + + const QJsonValue extensionsValue = formatObject.value(QStringLiteral("extensions")); + const QJsonArray extensionsArray = extensionsValue.toArray(); + auto extensions = QStringList(); + std::transform(extensionsArray.constBegin(), extensionsArray.constEnd(), + std::back_inserter(extensions), + [] (const QJsonValue &extensionValue) { return extensionValue.toString(); }); + format.setExtensions(extensions); + + const QString vendor = formatObject.value(QStringLiteral("vendor")).toString(); + format.setVendor(vendor); + + const QJsonValue substitutionValue = ruleObject.value(QStringLiteral("substitution")); + if (!substitutionValue.isString()) { + qWarning() << "Substitution needs to be a string"; + hasError = true; + break; + } + + // We default out to a Fragment ShaderType if nothing is specified + // as that was the initial behavior we introduced + const QString shaderType = formatObject.value(QStringLiteral("shaderType")).toString(); + format.setShaderType(shaderType == QStringLiteral("Fragment") ? QShaderFormat::Fragment + : shaderType == QStringLiteral("Vertex") ? QShaderFormat::Vertex + : shaderType == QStringLiteral("TessellationControl") ? QShaderFormat::TessellationControl + : shaderType == QStringLiteral("TessellationEvaluation") ? QShaderFormat::TessellationEvaluation + : shaderType == QStringLiteral("Geometry") ? QShaderFormat::Geometry + : shaderType == QStringLiteral("Compute") ? QShaderFormat::Compute + : QShaderFormat::Fragment); + + const QByteArray substitution = substitutionValue.toString().toUtf8(); + + const QJsonValue snippetsValue = ruleObject.value(QStringLiteral("headerSnippets")); + const QJsonArray snippetsArray = snippetsValue.toArray(); + auto snippets = QByteArrayList(); + std::transform(snippetsArray.constBegin(), snippetsArray.constEnd(), + std::back_inserter(snippets), + [] (const QJsonValue &snippetValue) { return snippetValue.toString().toUtf8(); }); + + node.addRule(format, QShaderNode::Rule(substitution, snippets)); + } + } + + m_nodes.insert(property, node); + } + + if (hasError) { + m_status = Error; + m_nodes.clear(); + } else { + m_status = Ready; + } +} +} +QT_END_NAMESPACE |