@@ -12,6 +12,7 @@ - Deadzone estimation for game controllers
  - Analog inputs can be used for shortcuts
  - Menu items for specific solar sensor brightness levels
  - Remappable controls for tilt and gyroscope sensors
+ - Status messages for actions taken while a game is running (e.g. save/load state)
 Bugfixes:
  - GBA: Fix timers not updating timing when writing to only the reload register
  - All: Fix sanitize-deb script not cleaning up after itself

@@ -109,7 +109,7 @@ m_opts.videoSync = GameController::VIDEO_SYNC;
 	m_opts.fpsTarget = 60;
 	m_opts.audioBuffers = 2048;
 	m_opts.volume = GBA_AUDIO_VOLUME_MAX;
-	m_opts.logLevel = GBA_LOG_WARN | GBA_LOG_ERROR | GBA_LOG_FATAL;
+	m_opts.logLevel = GBA_LOG_WARN | GBA_LOG_ERROR | GBA_LOG_FATAL | GBA_LOG_STATUS;
 	m_opts.rewindEnable = false;
 	m_opts.rewindBufferInterval = 0;
 	m_opts.rewindBufferCapacity = 0;

@@ -27,6 +27,8 @@ virtual void forceDraw() = 0;
 	virtual void lockAspectRatio(bool lock) = 0;
 	virtual void filter(bool filter) = 0;
 	virtual void framePosted(const uint32_t*) = 0;
+
+	virtual void showMessage(const QString& message) = 0;
 };
 
 }

@@ -51,7 +51,6 @@ m_painter->setContext(thread);
 	m_context = thread;
 	m_painter->resize(size());
 	m_gl->move(0, 0);
-	m_gl->resize(size());
 	m_drawThread = new QThread(this);
 	m_gl->context()->doneCurrent();
 	m_gl->context()->moveToThread(m_drawThread);
@@ -61,6 +60,7 @@ m_drawThread->start();
 
 	lockAspectRatio(m_lockAspectRatio);
 	filter(m_filter);
+	resizePainter();
 }
 
 void DisplayGL::stopDrawing() {
@@ -133,20 +133,39 @@ QMetaObject::invokeMethod(m_painter, "setBacking", Q_ARG(const uint32_t*, buffer));
 	}
 }
 
-void DisplayGL::resizeEvent(QResizeEvent* event) {
+void DisplayGL::showMessage(const QString& message) {
+	if (m_drawThread) {
+		QMetaObject::invokeMethod(m_painter, "showMessage", Q_ARG(const QString&, message));
+	}
+}
+
+void DisplayGL::resizeEvent(QResizeEvent*) {
+	resizePainter();
+}
+
+void DisplayGL::resizePainter() {
 	m_gl->resize(size());
 	if (m_drawThread) {
-		QMetaObject::invokeMethod(m_painter, "resize", Qt::BlockingQueuedConnection, Q_ARG(QSize, event->size()));
+		QMetaObject::invokeMethod(m_painter, "resize", Qt::BlockingQueuedConnection, Q_ARG(QSize, size()));
 	}
 }
 
 PainterGL::PainterGL(QGLWidget* parent)
 	: m_gl(parent)
 	, m_drawTimer(nullptr)
+	, m_messageTimer(this)
 	, m_lockAspectRatio(false)
 	, m_filter(false)
 	, m_context(nullptr)
 {
+	m_messageFont.setFamily("Source Code Pro");
+	m_messageFont.setStyleHint(QFont::Monospace);
+	m_messageFont.setPixelSize(6);
+	connect(&m_messageTimer, SIGNAL(timeout()), this, SLOT(clearMessage()));
+	m_messageTimer.setSingleShot(true);
+	m_messageTimer.setInterval(5000);
+
+	clearMessage();
 }
 
 void PainterGL::setContext(GBAThread* context) {
@@ -155,6 +174,7 @@ }
 
 void PainterGL::setBacking(const uint32_t* backing) {
 	m_gl->makeCurrent();
+	glBindTexture(GL_TEXTURE_2D, m_tex);
 #ifdef COLOR_16_BIT
 #ifdef COLOR_5_6_5
 	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 256, 256, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, backing);
@@ -169,8 +189,29 @@ }
 
 void PainterGL::resize(const QSize& size) {
 	m_size = size;
+	int w = m_size.width() * m_gl->devicePixelRatio();
+	int h = m_size.height() *m_gl->devicePixelRatio();
+	int drawW = w;
+	int drawH = h;
+	if (m_lockAspectRatio) {
+		if (w * 2 > h * 3) {
+			drawW = h * 3 / 2;
+		} else if (w * 2 < h * 3) {
+			drawH = w * 2 / 3;
+		}
+	}
+	m_viewport = QRect((w - drawW) / 2, (h - drawH) / 2, drawW, drawH);
+	m_painter.begin(m_gl->context()->device());
+	m_world = QTransform(
+		qreal(drawW) / VIDEO_HORIZONTAL_PIXELS, 0,
+		0, qreal(drawH) / VIDEO_VERTICAL_PIXELS,
+		m_viewport.x() / 2,
+		m_viewport.y() / 2);
+	m_painter.setWorldTransform(m_world);
+	m_painter.setFont(m_messageFont);
+	m_message.prepare(m_world, m_messageFont);
+	m_painter.end();
 	if (m_drawTimer) {
-		forceDraw();
 		forceDraw();
 	}
 }
@@ -178,7 +219,6 @@
 void PainterGL::lockAspectRatio(bool lock) {
 	m_lockAspectRatio = lock;
 	if (m_drawTimer) {
-		forceDraw();
 		forceDraw();
 	}
 }
@@ -213,9 +253,6 @@ glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 	glEnableClientState(GL_VERTEX_ARRAY);
 	glVertexPointer(2, GL_INT, 0, _glVertices);
 	glTexCoordPointer(2, GL_INT, 0, _glTexCoords);
-	glMatrixMode(GL_PROJECTION);
-	glLoadIdentity();
-	glOrtho(0, 240, 160, 0, 0, 1);
 	glMatrixMode(GL_MODELVIEW);
 	glLoadIdentity();
 	glClearColor(0, 0, 0, 0);
@@ -230,21 +267,21 @@ m_drawTimer->start();
 }
 
 void PainterGL::draw() {
-	m_gl->makeCurrent();
 	GBASyncWaitFrameStart(&m_context->sync, m_context->frameskip);
+	m_painter.begin(m_gl->context()->device());
+	m_painter.setWorldTransform(m_world);
 	performDraw();
+	m_painter.end();
 	GBASyncWaitFrameEnd(&m_context->sync);
 	m_gl->swapBuffers();
-	m_gl->doneCurrent();
 }
 
 void PainterGL::forceDraw() {
-	m_gl->makeCurrent();
-	glViewport(0, 0, m_size.width() * m_gl->devicePixelRatio(), m_size.height() * m_gl->devicePixelRatio());
-	glClear(GL_COLOR_BUFFER_BIT);
+	m_painter.begin(m_gl->context()->device());
+	m_painter.setWorldTransform(m_world);
 	performDraw();
+	m_painter.end();
 	m_gl->swapBuffers();
-	m_gl->doneCurrent();
 }
 
 void PainterGL::stop() {
@@ -253,6 +290,7 @@ delete m_drawTimer;
 	m_drawTimer = nullptr;
 	m_gl->makeCurrent();
 	glDeleteTextures(1, &m_tex);
+	glClearColor(0, 0, 0, 0);
 	glClear(GL_COLOR_BUFFER_BIT);
 	m_gl->swapBuffers();
 	m_gl->doneCurrent();
@@ -272,26 +310,42 @@ m_drawTimer->start();
 }
 
 void PainterGL::performDraw() {
-	int w = m_size.width() * m_gl->devicePixelRatio();
-	int h = m_size.height() *m_gl->devicePixelRatio();
-#ifndef Q_OS_MAC
-	// TODO: This seems to cause framerates to drag down to 120 FPS on OS X,
-	// even if the emulator can go faster. Look into why.
+	m_painter.beginNativePainting();
+	glMatrixMode(GL_PROJECTION);
+	glLoadIdentity();
+	glOrtho(0, VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS, 0, 0, 1);
+	glMatrixMode(GL_MODELVIEW);
+	glLoadIdentity();
 	glViewport(0, 0, m_size.width() * m_gl->devicePixelRatio(), m_size.height() * m_gl->devicePixelRatio());
+	glClearColor(0, 0, 0, 0);
 	glClear(GL_COLOR_BUFFER_BIT);
-#endif
-	int drawW = w;
-	int drawH = h;
-	if (m_lockAspectRatio) {
-		if (w * 2 > h * 3) {
-			drawW = h * 3 / 2;
-		} else if (w * 2 < h * 3) {
-			drawH = w * 2 / 3;
-		}
-	}
-	glViewport((w - drawW) / 2, (h - drawH) / 2, drawW, drawH);
+	glViewport(m_viewport.x(), m_viewport.y(), m_viewport.width(), m_viewport.height());
 	glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
 	if (m_context->sync.videoFrameWait) {
 		glFlush();
 	}
+	m_painter.endNativePainting();
+	m_painter.setRenderHint(QPainter::Antialiasing);
+	m_painter.setFont(m_messageFont);
+	m_painter.setPen(Qt::black);
+	m_painter.translate(1, 72);
+	for (int i = 0; i < 16; ++i) {
+		m_painter.save();
+		m_painter.translate(cos(i * M_PI / 8.0) * 0.4, sin(i * M_PI / 8.0) * 0.4);
+		m_painter.drawStaticText(0, 0, m_message);
+		m_painter.restore();
+	}
+	m_painter.setPen(Qt::white);
+	m_painter.drawStaticText(0, 0, m_message);
+}
+
+void PainterGL::showMessage(const QString& message) {
+	m_message.setText(message);
+	m_message.prepare(m_world, m_messageFont);
+	m_messageTimer.stop();
+	m_messageTimer.start();
+}
+
+void PainterGL::clearMessage() {
+	m_message.setText(QString());
 }

@@ -9,6 +9,7 @@
 #include "Display.h"
 
 #include <QGLWidget>
+#include <QStaticText>
 #include <QThread>
 #include <QTimer>
 
@@ -18,7 +19,7 @@ namespace QGBA {
 
 class EmptyGLWidget : public QGLWidget {
 public:
-	EmptyGLWidget(const QGLFormat& format, QWidget* parent) : QGLWidget(format, parent) {}
+	EmptyGLWidget(const QGLFormat& format, QWidget* parent) : QGLWidget(format, parent) { setAutoBufferSwap(false); }
 
 protected:
 	void paintEvent(QPaintEvent*) override {}
@@ -43,14 +44,15 @@ void lockAspectRatio(bool lock) override;
 	void filter(bool filter) override;
 	void framePosted(const uint32_t*) override;
 
+	void showMessage(const QString& message) override;
+
 protected:
-	virtual void paintEvent(QPaintEvent*) override {
-		QPainter paint(this);
-		paint.fillRect(QRect(QPoint(), size()), Qt::black);
-	};
+	virtual void paintEvent(QPaintEvent*) override {}
 	virtual void resizeEvent(QResizeEvent*) override;
 
 private:
+	void resizePainter();
+
 	QGLWidget* m_gl;
 	PainterGL* m_painter;
 	QThread* m_drawThread;
@@ -79,17 +81,26 @@ void resize(const QSize& size);
 	void lockAspectRatio(bool lock);
 	void filter(bool filter);
 
+	void showMessage(const QString& message);
+	void clearMessage();
+
 private:
 	void performDraw();
 
+	QPainter m_painter;
+	QStaticText m_message;
 	QGLWidget* m_gl;
 	QThread* m_thread;
 	QTimer* m_drawTimer;
+	QTimer m_messageTimer;
 	GBAThread* m_context;
 	GLuint m_tex;
 	QSize m_size;
 	bool m_lockAspectRatio;
 	bool m_filter;
+	QRect m_viewport;
+	QTransform m_world;
+	QFont m_messageFont;
 };
 
 }

@@ -31,6 +31,8 @@ void lockAspectRatio(bool lock) override;
 	void filter(bool filter) override;
 	void framePosted(const uint32_t*) override;
 
+	void showMessage(const QString& message) override {};
+
 protected:
 	virtual void paintEvent(QPaintEvent*) override;
 

@@ -94,8 +94,6 @@
 	m_threadContext.startCallback = [] (GBAThread* context) {
 		GameController* controller = static_cast<GameController*>(context->userData);
 		controller->m_audioProcessor->setInput(context);
-		// Override the GBA object's log level to prevent stdout spew
-		context->gba->logLevel = GBA_LOG_FATAL;
 		context->gba->luminanceSource = &controller->m_lux;
 		context->gba->rtcSource = &controller->m_rtc;
 #ifdef BUILD_SDL
@@ -128,6 +126,9 @@ };
 
 	m_threadContext.logHandler = [] (GBAThread* context, enum GBALogLevel level, const char* format, va_list args) {
 		static const char* stubMessage = "Stub software interrupt";
+		if (!context) {
+			return;
+		}
 		GameController* controller = static_cast<GameController*>(context->userData);
 		if (level == GBA_LOG_STUB && strncmp(stubMessage, format, strlen(stubMessage)) == 0) {
 			va_list argc;
@@ -140,7 +141,11 @@ QMetaObject::invokeMethod(controller, "crashGame", Q_ARG(const QString&, QString().vsprintf(format, args)));
 		} else if (!(controller->m_logLevels & level)) {
 			return;
 		}
-		controller->postLog(level, QString().vsprintf(format, args));
+		QString message(QString().vsprintf(format, args));
+		if (level == GBA_LOG_STATUS) {
+			controller->statusPosted(message);
+		}
+		controller->postLog(level, message);
 	};
 
 	m_audioThread->start(QThread::TimeCriticalPriority);

@@ -90,6 +90,7 @@ void unimplementedBiosCall(int);
 
 	void luminanceValueChanged(int);
 
+	void statusPosted(const QString& message);
 	void postLog(int level, const QString& log);
 
 public slots:

@@ -108,6 +108,7 @@ connect(m_controller, SIGNAL(frameAvailable(const uint32_t*)), m_display, SLOT(framePosted(const uint32_t*)));
 	connect(m_controller, SIGNAL(gameCrashed(const QString&)), this, SLOT(gameCrashed(const QString&)));
 	connect(m_controller, SIGNAL(gameFailed()), this, SLOT(gameFailed()));
 	connect(m_controller, SIGNAL(unimplementedBiosCall(int)), this, SLOT(unimplementedBiosCall(int)));
+	connect(m_controller, SIGNAL(statusPosted(const QString&)), m_display, SLOT(showMessage(const QString&)));
 	connect(m_logView, SIGNAL(levelsSet(int)), m_controller, SLOT(setLogLevel(int)));
 	connect(m_logView, SIGNAL(levelsEnabled(int)), m_controller, SLOT(enableLogLevel(int)));
 	connect(m_logView, SIGNAL(levelsDisabled(int)), m_controller, SLOT(disableLogLevel(int)));
@@ -119,7 +120,7 @@ connect(this, SIGNAL(audioBufferSamplesChanged(int)), m_controller, SLOT(setAudioBufferSamples(int)));
 	connect(this, SIGNAL(fpsTargetChanged(float)), m_controller, SLOT(setFPSTarget(float)));
 	connect(&m_fpsTimer, SIGNAL(timeout()), this, SLOT(showFPS()));
 
-	m_logView->setLevels(GBA_LOG_WARN | GBA_LOG_ERROR | GBA_LOG_FATAL);
+	m_logView->setLevels(GBA_LOG_WARN | GBA_LOG_ERROR | GBA_LOG_FATAL | GBA_LOG_STATUS);
 	m_fpsTimer.setInterval(FPS_TIMER_INTERVAL);
 
 	m_shortcutController->setConfigController(m_config);