Update ShaderNode

src/ShaderNode/DataModels/SampleTexture.cpp

@@ -0,0 +1,106 @@
+#include <ShaderGraph.hpp>
+#include <DataModels/SampleTexture.hpp>
+#include <DataModels/VecValue.hpp>
+#include <Nazara/Renderer/ShaderBuilder.hpp>
+
+SampleTexture::SampleTexture(ShaderGraph& graph) :
+ShaderNode(graph)
+{
+	m_layout = new QVBoxLayout;
+
+	m_textureSelection = new QComboBox;
+	m_textureSelection->setStyleSheet("background-color: rgba(255,255,255,255)");
+
+	m_layout->addWidget(m_textureSelection);
+
+	m_pixmap = QPixmap(64, 64);
+	m_pixmap.fill();
+
+	m_pixmapLabel = new QLabel;
+	m_pixmapLabel->setPixmap(m_pixmap);
+
+	m_layout->addWidget(m_pixmapLabel);
+
+	m_widget = new QWidget;
+	m_widget->setStyleSheet("background-color: rgba(0,0,0,0)");
+	m_widget->setLayout(m_layout);
+
+	m_onTextureListUpdate.Connect(GetGraph().OnTextureListUpdate, [&](ShaderGraph*) { UpdateTextureList(); });
+	UpdateTextureList();
+}
+
+QWidget* SampleTexture::embeddedWidget()
+{
+	return m_widget;
+}
+
+unsigned int SampleTexture::nPorts(QtNodes::PortType portType) const
+{
+	switch (portType)
+	{
+		case QtNodes::PortType::In:  return 1;
+		case QtNodes::PortType::Out: return 1;
+	}
+
+	return 0;
+}
+
+void SampleTexture::UpdatePreview()
+{
+	ComputePreview(m_pixmap);
+	m_pixmapLabel->setPixmap(m_pixmap);
+}
+
+void SampleTexture::UpdateTextureList()
+{
+	QString currentTexture = m_textureSelection->currentText();
+	m_textureSelection->clear();
+
+	for (const auto& textureEntry : GetGraph().GetTextures())
+		m_textureSelection->addItem(QString::fromStdString(textureEntry.name));
+
+	m_textureSelection->setCurrentText(currentTexture);
+}
+
+void SampleTexture::ComputePreview(QPixmap& pixmap) const
+{
+	pixmap.fill();
+}
+
+Nz::ShaderAst::ExpressionPtr SampleTexture::GetExpression(Nz::ShaderAst::ExpressionPtr* expressions, std::size_t count) const
+{
+	assert(count == 1);
+
+	auto sampler = Nz::ShaderBuilder::Uniform("Texture0", Nz::ShaderAst::ExpressionType::Sampler2D);
+
+	return Nz::ShaderBuilder::Sample2D(sampler, expressions[0]);
+}
+
+auto SampleTexture::dataType(QtNodes::PortType portType, QtNodes::PortIndex portIndex) const -> QtNodes::NodeDataType
+{
+	switch (portType)
+	{
+		case QtNodes::PortType::In:
+		{
+			assert(portIndex == 0);
+			return Vec2Data::Type();
+		}
+
+		case QtNodes::PortType::Out:
+		{
+			assert(portIndex == 0);
+			return Vec4Data::Type();
+		}
+
+		default:
+			assert(false);
+			throw std::runtime_error("Invalid PortType");
+	}
+}
+
+std::shared_ptr<QtNodes::NodeData> SampleTexture::outData(QtNodes::PortIndex port)
+{
+	assert(port == 0);
+
+	return std::make_shared<Vec4Data>(Nz::Vector4f::Zero());
+}