M CHANGES → CHANGES

@@ -74,6 +74,7 @@ - Qt: Fix camera image being upside-down sometimes (fixes mgba.io/i/829 again)
  - Qt: Fix drawing on macOS break when using OpenGL (fixes mgba.io/i/1899)
  - Qt: Load/save bytes from memory viewer in the order visible (fixes mgba.io/i/1900)
  - Qt: Fix stride changing when toggling SGB borders (fixes mgba.io/i/1898)
+ - Qt: Fix aliasing on background logo (fixes mgba.io/i/1886)
  - mGUI: Fix closing down a game if an exit is signalled
  - mVL: Fix injecting accidentally draining non-injection buffer
  - SM83: Simplify register pair access on big endian

M src/platform/qt/Window.cpp → src/platform/qt/Window.cpp

@@ -137,10 +137,7 @@ resizeFrame(QSize(GBA_VIDEO_HORIZONTAL_PIXELS * i, GBA_VIDEO_VERTICAL_PIXELS * i));
 #elif defined(M_CORE_GB)
 	resizeFrame(QSize(GB_VIDEO_HORIZONTAL_PIXELS * i, GB_VIDEO_VERTICAL_PIXELS * i));
 #endif
-	m_screenWidget->setPixmap(m_logo);
-	m_screenWidget->setDimensions(m_logo.width(), m_logo.height());
-	m_screenWidget->setLockIntegerScaling(false);
-	m_screenWidget->setLockAspectRatio(true);
+	setLogo();
 	setCentralWidget(m_screenWidget);
 
 	connect(this, &Window::shutdown, m_logView, &QWidget::hide);
@@ -746,6 +743,7 @@ m_screenWidget->setDimensions(size.width(), size.height());
 	m_config->updateOption("lockIntegerScaling");
 	m_config->updateOption("lockAspectRatio");
 	m_config->updateOption("interframeBlending");
+	m_config->updateOption("resampleVideo");
 	m_config->updateOption("showOSD");
 	if (m_savedScale > 0) {
 		resizeFrame(size * m_savedScale);
@@ -814,11 +812,7 @@ action->setEnabled(false);
 	}
 	setWindowFilePath(QString());
 	detachWidget(m_display.get());
-	m_screenWidget->setDimensions(m_logo.width(), m_logo.height());
-	m_screenWidget->setLockIntegerScaling(false);
-	m_screenWidget->setLockAspectRatio(true);
-	m_screenWidget->setPixmap(m_logo);
-	m_screenWidget->unsetCursor();
+	setLogo();
 	if (m_display) {
 #ifdef M_CORE_GB
 		m_display->setMinimumSize(GB_VIDEO_HORIZONTAL_PIXELS, GB_VIDEO_VERTICAL_PIXELS);
@@ -1406,7 +1400,9 @@ resampleVideo->connect([this](const QVariant& value) {
 		if (m_display) {
 			m_display->filter(value.toBool());
 		}
-		m_screenWidget->filter(value.toBool());
+		if (m_controller) {
+			m_screenWidget->filter(value.toBool());
+		}
 	}, this);
 	m_config->updateOption("resampleVideo");
 
@@ -1935,6 +1931,15 @@ connect(m_controller.get(), &CoreController::frameAvailable, m_display.get(), &Display::framePosted);
 	connect(m_controller.get(), &CoreController::statusPosted, m_display.get(), &Display::showMessage);
 	connect(m_controller.get(), &CoreController::didReset, m_display.get(), &Display::resizeContext);
 	changeRenderer();
+}
+
+void Window::setLogo() {
+	m_screenWidget->setPixmap(m_logo);
+	m_screenWidget->setDimensions(m_logo.width(), m_logo.height());
+	m_screenWidget->setLockIntegerScaling(false);
+	m_screenWidget->setLockAspectRatio(true);
+	m_screenWidget->filter(true);
+	m_screenWidget->unsetCursor();
 }
 
 WindowBackground::WindowBackground(QWidget* parent)

M src/platform/qt/Window.h → src/platform/qt/Window.h

@@ -142,6 +142,8 @@ void focusCheck();
 
 	void updateFrame();
 
+	void setLogo();
+
 private:
 	static const int FPS_TIMER_INTERVAL = 2000;
 	static const int MUST_RESTART_TIMEOUT = 10000;