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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "custommaterial.h"
#include <QtCore/qdir.h>
#include <QtQuick3DAssetUtils/private/qssgrtutilities_p.h>
#include <QtQuick3DAssetUtils/private/qssgqmlutilities_p.h>
#include <QtQuick3D/private/qquick3dshaderutils_p.h>
QT_BEGIN_NAMESPACE
using TextureStore = QHash<QString, QImage *>;
Q_GLOBAL_STATIC(TextureStore, s_textureStore);
template<typename T>
static void setProperty(QQuick3DObject &obj, const char *name, T v)
{
if (QQuick3DObjectPrivate::get(&obj)->type == QQuick3DObjectPrivate::Type::CustomMaterial) {
if constexpr (std::is_same_v<T, QSSGSceneDesc::Texture *>) {
if (QQuick3DTexture *texture = qobject_cast<QQuick3DTexture *>(v ? v->obj : nullptr)) {
auto textureInput = new QQuick3DShaderUtilsTextureInput(&obj);
textureInput->setTexture(texture);
obj.setProperty(name, QVariant::fromValue(textureInput));
}
} else {
obj.setProperty(name, QVariant::fromValue(v));
}
}
}
void CustomMaterial::setUniform(QSSGSceneDesc::Material &material, const Uniform &uniform)
{
if (uniform.name.isEmpty()) {
qWarning() << "Uniform without name! Skipping";
return;
}
constexpr auto Dynamic = QSSGSceneDesc::Property::Type::Dynamic;
switch (uniform.type) {
case Uniform::Type::Bool:
QSSGSceneDesc::setProperty(material, uniform.name.constData(), &setProperty<bool>, uniform.b, Dynamic);
break;
case Uniform::Type::Int:
QSSGSceneDesc::setProperty(material, uniform.name.constData(), &setProperty<int>, uniform.i, Dynamic);
break;
case Uniform::Type::Float:
QSSGSceneDesc::setProperty(material, uniform.name.constData(), &setProperty<float>, uniform.f, Dynamic);
break;
case Uniform::Type::Vec2:
QSSGSceneDesc::setProperty(material, uniform.name.constData(), &setProperty<QVector2D>, uniform.vec2, Dynamic);
break;
case Uniform::Type::Vec3:
QSSGSceneDesc::setProperty(material, uniform.name.constData(), &setProperty<QVector3D>, uniform.vec3, Dynamic);
break;
case Uniform::Type::Vec4:
QSSGSceneDesc::setProperty(material, uniform.name.constData(), &setProperty<QVector4D>, uniform.vec4, Dynamic);
break;
case Uniform::Type::Mat44:
QSSGSceneDesc::setProperty(material, uniform.name.constData(), &setProperty<QMatrix4x4>, uniform.m44, Dynamic);
break;
case Uniform::Type::Sampler:
{
QFileInfo fi(uniform.imagePath);
const auto &path = fi.canonicalFilePath();
if (!path.isEmpty()) {
auto it = s_textureStore->constFind(path);
const auto end = s_textureStore->constEnd();
if (it == end) {
QImage image;
if (image.load(path))
it = s_textureStore->insert(path, new QImage(image));
else
qWarning("Failed to load image %s", qPrintable(path));
}
if (it != end) {
const auto &image = *(*it);
const QSize resSize = image.size();
// Note: the image must not be deleted or modified while the textureData node is in the scene
auto *imageData = reinterpret_cast<const char *>(image.constBits());
QByteArray dataref = QByteArray::fromRawData(imageData, image.sizeInBytes());
const auto format = QByteArrayLiteral("rgba8888");
const auto &baseName = QString(fi.baseName() + QString::number(material.id));
auto name = baseName.toUtf8();
auto textureData = new QSSGSceneDesc::TextureData(dataref, resSize, format, 0, name);
QSSGSceneDesc::addNode(material, *textureData);
auto texture = new QSSGSceneDesc::Texture(QSSGSceneDesc::Texture::RuntimeType::Image2D);
QSSGSceneDesc::addNode(material, *texture);
QSSGSceneDesc::setProperty(*texture, "textureData", &QQuick3DTexture::setTextureData, textureData);
QSSGSceneDesc::setProperty(material, uniform.name.constData(), &setProperty<QSSGSceneDesc::Texture *>, texture, Dynamic);
}
}
break;
}
case Uniform::Type::Last:
Q_UNREACHABLE();
break;
}
}
QPointer<QQuick3DCustomMaterial> CustomMaterial::create(QQuick3DNode &parent, const UniformTable &uniforms, const Properties &properties, const Shaders &shaders)
{
using namespace QSSGSceneDesc;
QQuick3DCustomMaterial *ret = nullptr;
if (scene.root)
scene.reset();
QSSGSceneDesc::Material *material = new Material(Material::RuntimeType::CustomMaterial);
addNode(scene, *material);
// Set uniforms
for (const auto &uniform : uniforms)
setUniform(*material, uniform);
// Set common properties
const Properties def;
if (def.cullMode != properties.cullMode)
setProperty(*material, "cullMode", &QQuick3DCustomMaterial::setCullMode, properties.cullMode);
if (def.depthDrawMode != properties.depthDrawMode)
setProperty(*material, "depthDrawMode", &QQuick3DCustomMaterial::setDepthDrawMode, properties.depthDrawMode);
if (def.shadingMode != properties.shadingMode)
setProperty(*material, "shadingMode", &QQuick3DCustomMaterial::setShadingMode, properties.shadingMode);
if (def.sourceBlend != properties.sourceBlend)
setProperty(*material, "sourceBlend", &QQuick3DCustomMaterial::setSrcBlend, properties.sourceBlend);
if (def.destinationBlend != properties.destinationBlend)
setProperty(*material, "destinationBlend", &QQuick3DCustomMaterial::setDstBlend, properties.destinationBlend);
if (!shaders.vert.isEmpty())
setProperty(*material, "vertexShader", &QQuick3DCustomMaterial::setVertexShader, QUrl{ shaders.vert.toString() });
if (!shaders.frag.isEmpty())
setProperty(*material, "fragmentShader", &QQuick3DCustomMaterial::setFragmentShader, QUrl{ shaders.frag.toString() });
auto resourceParent = std::make_unique<QQuick3DNode>();
QSSGRuntimeUtils::createScene(parent, scene);
if (auto customMaterial = qobject_cast<QQuick3DCustomMaterial *>(material->obj)) {
resourceParent.release()->setParent(&parent);
ret = customMaterial;
}
return ret;
}
bool CustomMaterial::isValid() const { return scene.root != nullptr && scene.root->runtimeType == QSSGSceneDesc::Material::RuntimeType::CustomMaterial; }
QDataStream &CustomMaterial::readFromDataStream(QDataStream &stream, Uniform &uniform)
{
int type;
stream >> type >> uniform.name;
uniform.type = Uniform::Type(type);
switch (uniform.type) {
case Uniform::Type::Bool:
stream >> uniform.b;
break;
case Uniform::Type::Int:
stream >> uniform.i;
break;
case Uniform::Type::Float:
stream >> uniform.f;
break;
case Uniform::Type::Vec2:
stream >> uniform.vec2;
break;
case Uniform::Type::Vec3:
stream >> uniform.vec3;
break;
case Uniform::Type::Vec4:
stream >> uniform.vec4;
break;
case Uniform::Type::Mat44:
stream >> uniform.m44;
break;
case Uniform::Type::Sampler:
{
QImage image;
stream >> uniform.imagePath >> image;
s_textureStore->insert(uniform.imagePath, new QImage(image));
}
break;
case Uniform::Type::Last:
Q_UNREACHABLE();
break;
}
return stream;
}
QDataStream &CustomMaterial::writeToDataStream(QDataStream &stream, const Uniform &uniform)
{
stream << int(uniform.type) << uniform.name;
switch (uniform.type) {
case Uniform::Type::Bool:
stream << uniform.b;
break;
case Uniform::Type::Int:
stream << uniform.i;
break;
case Uniform::Type::Float:
stream << uniform.f;
break;
case Uniform::Type::Vec2:
stream << uniform.vec2;
break;
case Uniform::Type::Vec3:
stream << uniform.vec3;
break;
case Uniform::Type::Vec4:
stream << uniform.vec4;
break;
case Uniform::Type::Mat44:
stream << uniform.m44;
break;
case Uniform::Type::Sampler:
{
const auto &path = uniform.imagePath;
auto it = s_textureStore->constFind(path);
const auto end = s_textureStore->cend();
if (it != end)
stream << path << *(*it);
}
break;
case Uniform::Type::Last:
Q_UNREACHABLE();
break;
}
return stream;
}
void CustomMaterial::writeQmlComponent(const QSSGSceneDesc::Material &material, QTextStream &stream)
{
QSSGQmlUtilities::writeQmlComponent(material, stream, QDir());
}
QT_END_NAMESPACE
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