bootmanager: Add wayland protocols

* zwp_relative_pointer_v1 + zwp_locked_pointer_v1 for mouse panning
* wp_viewporter for compositor side scaling

src/core/frontend/emu_window.h

@@ -60,6 +60,9 @@ public:
         // Connection to a display server. This is used on X11 and Wayland platforms.
         void* display_connection = nullptr;
 
+        // Mouse pointer. This is used on Wayland platforms.
+        void* mouse_pointer = nullptr;
+
         // Render surface. This is a pointer to the native window handle, which depends
         // on the platform. e.g. HWND for Windows, Window for X11. If the surface is
         // set to nullptr, the video backend will run in headless mode.

src/yuzu/CMakeLists.txt

@@ -393,6 +393,33 @@ if (UNIX AND NOT APPLE)
     target_link_libraries(yuzu PRIVATE Qt${QT_MAJOR_VERSION}::DBus)
 endif()
 
+if (UNIX AND NOT APPLE)
+    find_package(ECM NO_MODULE)
+    if (ECM_FOUND)
+        list(APPEND CMAKE_MODULE_PATH ${ECM_MODULE_PATH})
+        find_package(Wayland COMPONENTS Client)
+        if (Wayland_FOUND)
+            find_package(WaylandScanner REQUIRED)
+            find_package(WaylandProtocols 1.15 REQUIRED)
+            ecm_add_wayland_client_protocol(WAYLAND_PROTOCOL_SRCS
+                PROTOCOL ${WaylandProtocols_DATADIR}/unstable/relative-pointer/relative-pointer-unstable-v1.xml
+                BASENAME relative-pointer-unstable-v1)
+            ecm_add_wayland_client_protocol(WAYLAND_PROTOCOL_SRCS
+                PROTOCOL ${WaylandProtocols_DATADIR}/unstable/pointer-constraints/pointer-constraints-unstable-v1.xml
+                BASENAME pointer-constraints-unstable-v1)
+            ecm_add_wayland_client_protocol(WAYLAND_PROTOCOL_SRCS
+                PROTOCOL ${WaylandProtocols_DATADIR}/stable/viewporter/viewporter.xml
+                BASENAME viewporter)
+
+            target_link_libraries(yuzu PRIVATE Wayland::Client)
+            target_sources(yuzu PRIVATE ${WAYLAND_PROTOCOL_SRCS})
+            set_source_files_properties(${WAYLAND_PROTOCOL_SRCS} PROPERTIES SKIP_PRECOMPILE_HEADERS TRUE)
+
+            target_compile_definitions(yuzu PRIVATE HAS_WAYLAND)
+        endif()
+    endif()
+endif()
+
 target_compile_definitions(yuzu PRIVATE
     # Use QStringBuilder for string concatenation to reduce
     # the overall number of temporary strings created.

src/yuzu/bootmanager.cpp

@@ -33,6 +33,11 @@
 #include <QWindow>
 #include <QtCore/qobjectdefs.h>
 
+#ifdef HAS_WAYLAND
+#include <qpa/qplatformnativeinterface.h>
+#include <wayland-client.h>
+#endif
+
 #ifdef HAS_OPENGL
 #include <QOffscreenSurface>
 #include <QOpenGLContext>
@@ -354,6 +359,17 @@ void GRenderWindow::OnFramebufferSizeChanged() {
     const qreal pixel_ratio = windowPixelRatio();
     const u32 width = this->width() * pixel_ratio;
     const u32 height = this->height() * pixel_ratio;
+
+#ifdef HAS_WAYLAND
+    if (viewport) {
+        if (width > 0 && height > 0) {
+            wp_viewport_set_destination(viewport, this->width(), this->height());
+        } else {
+            wp_viewport_set_destination(viewport, -1, -1);
+        }
+    }
+#endif // HAS_WAYLAND
+
     UpdateCurrentFramebufferLayout(width, height);
 }
 
@@ -661,7 +677,99 @@ void GRenderWindow::mousePressEvent(QMouseEvent* event) {
     emit MouseActivity();
 }
 
+#ifdef HAS_WAYLAND
+void GRenderWindow::GlobalAddHandler(void* data, wl_registry* registry, u32 name,
+                                     const char* interface, u32 version) {
+    GRenderWindow* render_window = static_cast<GRenderWindow*>(data);
+
+    if (std::strcmp(interface, zwp_pointer_constraints_v1_interface.name) == 0 &&
+        version == static_cast<u32>(zwp_pointer_constraints_v1_interface.version)) {
+        render_window->pointer_constraints = static_cast<zwp_pointer_constraints_v1*>(
+            wl_registry_bind(registry, name, &zwp_pointer_constraints_v1_interface, version));
+    } else if (std::strcmp(interface, zwp_relative_pointer_manager_v1_interface.name) == 0 &&
+               version == static_cast<u32>(zwp_relative_pointer_manager_v1_interface.version)) {
+        render_window->relative_pointer_manager = static_cast<zwp_relative_pointer_manager_v1*>(
+            wl_registry_bind(registry, name, &zwp_relative_pointer_manager_v1_interface, version));
+    } else if (std::strcmp(interface, wp_viewporter_interface.name) == 0) {
+        render_window->viewporter = static_cast<wp_viewporter*>(
+            wl_registry_bind(registry, name, &wp_viewporter_interface, version));
+    }
+}
+
+void GRenderWindow::GlobalRemoveHandler(void* data, wl_registry* registry, u32 name) {}
+
+void GRenderWindow::RelativePointerMotionHandler(void* data,
+                                                 zwp_relative_pointer_v1* zwp_relative_pointer_v1,
+                                                 u32 utime_hi, u32 utime_lo, wl_fixed_t dx,
+                                                 wl_fixed_t dy, wl_fixed_t dx_unaccel,
+                                                 wl_fixed_t dy_unaccel) {
+    GRenderWindow* render_window = static_cast<GRenderWindow*>(data);
+    render_window->CheckWaylandPointerLock();
+    if (!render_window->IsWaylandPointerLocked())
+        return;
+
+    render_window->input_subsystem->GetMouse()->Move(wl_fixed_to_int(dx_unaccel),
+                                                     wl_fixed_to_int(dy_unaccel), 0, 0);
+}
+
+void GRenderWindow::PointerLockedHandler(void* data, zwp_locked_pointer_v1*) {
+    GRenderWindow* render_window = static_cast<GRenderWindow*>(data);
+    render_window->setCursor(QCursor(Qt::BlankCursor));
+}
+void GRenderWindow::PointerUnlockedHandler(void* data, zwp_locked_pointer_v1*) {
+    GRenderWindow* render_window = static_cast<GRenderWindow*>(data);
+    render_window->locked_pointer = nullptr;
+    render_window->unsetCursor();
+}
+
+void GRenderWindow::CheckWaylandPointerLock() {
+    if (!pointer_constraints || !relative_pointer_manager)
+        return;
+
+    bool mouse_panning = Settings::values.mouse_panning && !Settings::values.mouse_enabled;
+
+    if (IsWaylandPointerLocked() != mouse_panning) {
+        if (mouse_panning) {
+            LockWaylandPointer();
+        } else {
+            UnlockWaylandPointer();
+        }
+    }
+}
+
+bool GRenderWindow::IsWaylandPointerLocked() {
+    return locked_pointer;
+}
+
+void GRenderWindow::LockWaylandPointer() {
+    if (pointer_constraints && relative_pointer && !locked_pointer) {
+        locked_pointer = zwp_pointer_constraints_v1_lock_pointer(
+            pointer_constraints, static_cast<wl_surface*>(window_info.render_surface),
+            static_cast<wl_pointer*>(window_info.mouse_pointer), nullptr,
+            ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_ONESHOT);
+
+        static constexpr zwp_locked_pointer_v1_listener locked_pointer_listener = {
+            .locked = PointerLockedHandler,
+            .unlocked = PointerUnlockedHandler,
+        };
+        zwp_locked_pointer_v1_add_listener(locked_pointer, &locked_pointer_listener, this);
+    }
+}
+
+void GRenderWindow::UnlockWaylandPointer() {
+    if (locked_pointer) {
+        zwp_locked_pointer_v1_destroy(locked_pointer);
+        locked_pointer = nullptr;
+    }
+}
+#endif // HAS_WAYLAND
+
 void GRenderWindow::mouseMoveEvent(QMouseEvent* event) {
+#ifdef HAS_WAYLAND
+    if (IsWaylandPointerLocked())
+        return;
+#endif // HAS_WAYLAND
+
     // Touch input is handled in TouchUpdateEvent
     if (event->source() == Qt::MouseEventSynthesizedBySystem) {
         return;
@@ -941,6 +1049,39 @@ bool GRenderWindow::InitRenderTarget() {
     // Update the Window System information with the new render target
     window_info = QtCommon::GetWindowSystemInfo(child_widget->windowHandle());
 
+#ifdef HAS_WAYLAND
+    if (window_info.type == Core::Frontend::WindowSystemType::Wayland) {
+        wl_display* display = static_cast<wl_display*>(window_info.display_connection);
+
+        wl_registry* registry = wl_display_get_registry(display);
+
+        static constexpr wl_registry_listener registryListener = {
+            .global = GlobalAddHandler,
+            .global_remove = GlobalRemoveHandler,
+        };
+        wl_registry_add_listener(registry, &registryListener, this);
+
+        // This should run GlobalAddHandler getting the protocol globals
+        wl_display_roundtrip(display);
+
+        if (viewporter) {
+            viewport = wp_viewporter_get_viewport(
+                viewporter, static_cast<wl_surface*>(window_info.render_surface));
+        }
+
+        if (relative_pointer_manager) {
+            relative_pointer = zwp_relative_pointer_manager_v1_get_relative_pointer(
+                relative_pointer_manager, static_cast<wl_pointer*>(window_info.mouse_pointer));
+
+            static const zwp_relative_pointer_v1_listener relative_pointer_listener = {
+                .relative_motion = RelativePointerMotionHandler,
+            };
+            zwp_relative_pointer_v1_add_listener(relative_pointer, &relative_pointer_listener,
+                                                 this);
+        }
+    }
+#endif // HAS_WAYLAND
+
     child_widget->resize(Layout::ScreenUndocked::Width, Layout::ScreenUndocked::Height);
     layout()->addWidget(child_widget);
     // Reset minimum required size to avoid resizing issues on the main window after restarting.

src/yuzu/bootmanager.h

@@ -23,6 +23,12 @@
 #include <qnamespace.h>
 #include <qobjectdefs.h>
 
+#ifdef HAS_WAYLAND
+#include <wayland-pointer-constraints-unstable-v1-client-protocol.h>
+#include <wayland-relative-pointer-unstable-v1-client-protocol.h>
+#include <wayland-viewporter-client-protocol.h>
+#endif
+
 #include "common/common_types.h"
 #include "common/logging/log.h"
 #include "common/polyfill_thread.h"
@@ -227,6 +233,32 @@ signals:
     void TasPlaybackStateChanged();
 
 private:
+#ifdef HAS_WAYLAND
+    static void GlobalAddHandler(void* data, wl_registry* registry, u32 name, const char* interface,
+                                 u32 version);
+    static void GlobalRemoveHandler(void* data, wl_registry* registry, u32 name);
+    static void RelativePointerMotionHandler(void* data,
+                                             zwp_relative_pointer_v1* zwp_relative_pointer_v1,
+                                             u32 utime_hi, u32 utime_lo, wl_fixed_t dx,
+                                             wl_fixed_t dy, wl_fixed_t dx_unaccel,
+                                             wl_fixed_t dy_unaccel);
+    static void PointerLockedHandler(void* data, zwp_locked_pointer_v1* zwp_relative_pointer_v1);
+    static void PointerUnlockedHandler(void* data, zwp_locked_pointer_v1* zwp_relative_pointer_v1);
+
+    void CheckWaylandPointerLock();
+    bool IsWaylandPointerLocked();
+    void LockWaylandPointer();
+    void UnlockWaylandPointer();
+
+    zwp_pointer_constraints_v1* pointer_constraints = nullptr;
+    zwp_relative_pointer_manager_v1* relative_pointer_manager = nullptr;
+    wp_viewporter* viewporter = nullptr;
+
+    zwp_relative_pointer_v1* relative_pointer = nullptr;
+    zwp_locked_pointer_v1* locked_pointer = nullptr;
+    wp_viewport* viewport = nullptr;
+#endif
+
     void TouchBeginEvent(const QTouchEvent* event);
     void TouchUpdateEvent(const QTouchEvent* event);
     void TouchEndEvent();

src/yuzu/qt_common.cpp

@@ -48,6 +48,7 @@ Core::Frontend::EmuWindow::WindowSystemInfo GetWindowSystemInfo(QWindow* window)
 #else
     QPlatformNativeInterface* pni = QGuiApplication::platformNativeInterface();
     wsi.display_connection = pni->nativeResourceForWindow("display", window);
+    wsi.mouse_pointer = pni->nativeResourceForIntegration("wl_pointer");
     if (wsi.type == Core::Frontend::WindowSystemType::Wayland)
         wsi.render_surface = window ? pni->nativeResourceForWindow("surface", window) : nullptr;
     else