void QQuickShaderEffectCommon::updateShader(QQuickItem *item, Key::ShaderType shaderType)
{
disconnectPropertySignals(item, shaderType);
qDeleteAll(signalMappers[shaderType]);
uniformData[shaderType].clear();
signalMappers[shaderType].clear();
if (shaderType == Key::VertexShader)
attributes.clear();
const QByteArray &code = source.sourceCode[shaderType];
if (code.isEmpty()) {
// Optimize for default code.
if (shaderType == Key::VertexShader) {
attributes.append(QByteArray(qt_position_attribute_name));
attributes.append(QByteArray(qt_texcoord_attribute_name));
UniformData d;
d.name = "qt_Matrix";
d.specialType = UniformData::Matrix;
uniformData[Key::VertexShader].append(d);
signalMappers[Key::VertexShader].append(0);
} else if (shaderType == Key::FragmentShader) {
UniformData d;
d.name = "qt_Opacity";
d.specialType = UniformData::Opacity;
uniformData[Key::FragmentShader].append(d);
signalMappers[Key::FragmentShader].append(0);
QSignalMapper *mapper = new QSignalMapper;
mapper->setMapping(item, 1 | (Key::FragmentShader << 16));
const char *sourceName = "source";
d.name = sourceName;
d.value = item->property(sourceName);
d.specialType = UniformData::Sampler;
uniformData[Key::FragmentShader].append(d);
signalMappers[Key::FragmentShader].append(mapper);
}
} else {
lookThroughShaderCode(item, shaderType, code);
}
connectPropertySignals(item, shaderType);
}
void QQuickOpenGLShaderEffectCommon::updateShader(QQuickItem *item,
const QMetaObject *itemMetaObject,
Key::ShaderType shaderType)
{
disconnectPropertySignals(item, shaderType);
uniformData[shaderType].clear();
clearSignalMappers(shaderType);
if (shaderType == Key::VertexShader)
attributes.clear();
// A qrc or file URL means the shader source is to be read from the specified file.
QUrl srcUrl(QString::fromUtf8(source.sourceCode[shaderType]));
if (!srcUrl.scheme().compare(QLatin1String("qrc"), Qt::CaseInsensitive) || srcUrl.isLocalFile()) {
if (!fileSelector) {
fileSelector = new QFileSelector(item);
// There may not be an OpenGL context accessible here. So rely on
// the window's requestedFormat().
if (item->window()
&& item->window()->requestedFormat().profile() == QSurfaceFormat::CoreProfile) {
fileSelector->setExtraSelectors(QStringList() << QStringLiteral("glslcore"));
}
}
const QString fn = fileSelector->select(QQmlFile::urlToLocalFileOrQrc(srcUrl));
QFile f(fn);
if (f.open(QIODevice::ReadOnly | QIODevice::Text)) {
source.sourceCode[shaderType] = f.readAll();
f.close();
} else {
qWarning("ShaderEffect: Failed to read %s", qPrintable(fn));
source.sourceCode[shaderType] = QByteArray();
}
}
const QByteArray &code = source.sourceCode[shaderType];
if (code.isEmpty()) {
// Optimize for default code.
if (shaderType == Key::VertexShader) {
attributes.append(QByteArray(qtPositionAttributeName()));
attributes.append(QByteArray(qtTexCoordAttributeName()));
UniformData d;
d.name = "qt_Matrix";
d.specialType = UniformData::Matrix;
uniformData[Key::VertexShader].append(d);
signalMappers[Key::VertexShader].append(0);
} else if (shaderType == Key::FragmentShader) {
UniformData d;
d.name = "qt_Opacity";
d.specialType = UniformData::Opacity;
uniformData[Key::FragmentShader].append(d);
signalMappers[Key::FragmentShader].append(0);
const int mappedId = 1 | (Key::FragmentShader << 16);
auto mapper = new QtPrivate::MappedSlotObject([this, mappedId](){mappedPropertyChanged(mappedId);});
const char *sourceName = "source";
d.name = sourceName;
d.setValueFromProperty(item, itemMetaObject);
d.specialType = UniformData::Sampler;
uniformData[Key::FragmentShader].append(d);
signalMappers[Key::FragmentShader].append(mapper);
}
} else {
lookThroughShaderCode(item, itemMetaObject, shaderType, code);
}
connectPropertySignals(item, itemMetaObject, shaderType);
}