Qt: Initial shader editor support

src/panda_qt/main_window.cpp

@@ -55,12 +55,14 @@ MainWindow::MainWindow(QApplication* app, QWidget* parent) : QMainWindow(parent)
 	auto luaEditorAction = toolsMenu->addAction(tr("Open Lua Editor"));
 	auto cheatsEditorAction = toolsMenu->addAction(tr("Open Cheats Editor"));
 	auto patchWindowAction = toolsMenu->addAction(tr("Open Patch Window"));
+	auto shaderEditorAction = toolsMenu->addAction(tr("Open Shader Editor"));
 	auto dumpDspFirmware = toolsMenu->addAction(tr("Dump loaded DSP firmware"));
 
 	connect(dumpRomFSAction, &QAction::triggered, this, &MainWindow::dumpRomFS);
-	connect(luaEditorAction, &QAction::triggered, this, &MainWindow::openLuaEditor);
-	connect(cheatsEditorAction, &QAction::triggered, this, &MainWindow::openCheatsEditor);
-	connect(patchWindowAction, &QAction::triggered, this, &MainWindow::openPatchWindow);
+	connect(luaEditorAction, &QAction::triggered, this, [this]() { luaEditor->show(); });
+	connect(shaderEditorAction, &QAction::triggered, this, [this]() { shaderEditor->show(); });
+	connect(cheatsEditorAction, &QAction::triggered, this, [this]() { cheatsEditor->show(); });
+	connect(patchWindowAction, &QAction::triggered, this, [this]() { patchWindow->show(); });
 	connect(dumpDspFirmware, &QAction::triggered, this, &MainWindow::dumpDspFirmware);
 
 	auto aboutAction = aboutMenu->addAction(tr("About Panda3DS"));
@@ -75,6 +77,8 @@ MainWindow::MainWindow(QApplication* app, QWidget* parent) : QMainWindow(parent)
 	cheatsEditor = new CheatsWindow(emu, {}, this);
 	patchWindow = new PatchWindow(this);
 	luaEditor = new TextEditorWindow(this, "script.lua", "");
+	shaderEditor = new ShaderEditorWindow(this, "shader.glsl", "");
+	shaderEditor->setEnable(emu->getRenderer()->supportsShaderReload());
 
 	auto args = QCoreApplication::arguments();
 	if (args.size() > 1) {
@@ -294,10 +298,6 @@ void MainWindow::showAboutMenu() {
 	about.exec();
 }
 
-void MainWindow::openLuaEditor() { luaEditor->show(); }
-void MainWindow::openCheatsEditor() { cheatsEditor->show(); }
-void MainWindow::openPatchWindow() { patchWindow->show(); }
-
 void MainWindow::dispatchMessage(const EmulatorMessage& message) {
 	switch (message.type) {
 		case MessageType::LoadROM:
@@ -453,6 +453,14 @@ void MainWindow::loadLuaScript(const std::string& code) {
 	sendMessage(message);
 }
 
+void MainWindow::reloadShader(const std::string& shader) {
+	EmulatorMessage message{.type = MessageType::ReloadUbershader};
+
+	// Make a copy of the code on the heap to send via the message queue
+	message.string.str = new std::string(shader);
+	sendMessage(message);
+}
+
 void MainWindow::editCheat(u32 handle, const std::vector<uint8_t>& cheat, const std::function<void(u32)>& callback) {
 	EmulatorMessage message{.type = MessageType::EditCheat};
 

src/panda_qt/shader_editor.cpp

@@ -0,0 +1,54 @@
+#include <QPushButton>
+#include <QVBoxLayout>
+
+#include "panda_qt/main_window.hpp"
+#include "panda_qt/shader_editor.hpp"
+
+using namespace Zep;
+
+ShaderEditorWindow::ShaderEditorWindow(QWidget* parent, const std::string& filename, const std::string& initialText)
+	: QDialog(parent), zepWidget(this, qApp->applicationDirPath().toStdString(), fontSize) {
+	resize(600, 600);
+
+	// Register our extensions
+	ZepRegressExCommand::Register(zepWidget.GetEditor());
+	ZepReplExCommand::Register(zepWidget.GetEditor(), &replProvider);
+
+	// Default to standard mode instead of vim mode, initialize text box
+	zepWidget.GetEditor().InitWithText(filename, initialText);
+	zepWidget.GetEditor().SetGlobalMode(Zep::ZepMode_Standard::StaticName());
+
+	// Layout for widgets
+	QVBoxLayout* mainLayout = new QVBoxLayout();
+	setLayout(mainLayout);
+
+	QPushButton* button = new QPushButton(tr("Reload shader"), this);
+	button->setFixedSize(100, 20);
+
+	// When the Load Script button is pressed, send the current text to the MainWindow, which will upload it to the emulator's lua object
+	connect(button, &QPushButton::pressed, this, [this]() {
+		if (parentWidget()) {
+			auto buffer = zepWidget.GetEditor().GetMRUBuffer();
+			const std::string text = buffer->GetBufferText(buffer->Begin(), buffer->End());
+
+			static_cast<MainWindow*>(parentWidget())->reloadShader(text);
+		} else {
+			// This should be unreachable, only here for safety purposes
+			printf("Text editor does not have any parent widget, click doesn't work :(\n");
+		}
+	});
+
+	mainLayout->addWidget(button);
+	mainLayout->addWidget(&zepWidget);
+}
+
+void ShaderEditorWindow::setEnable(bool enable) {
+	shaderEditorSupported = enable;
+
+	if (enable) {
+		setDisabled(false);
+	} else {
+		setDisabled(true);
+		setText("Shader editor window is not available for this renderer backend");
+	}
+}