14 files changed, 446 insertions, 37 deletions

diff --git a/src/input_common/CMakeLists.txt b/src/input_common/CMakeLists.txt
index 09361e37e..c84685214 100644
--- a/src/input_common/CMakeLists.txt
+++ b/src/input_common/CMakeLists.txt
@@ -7,6 +7,8 @@ add_library(input_common STATIC
     main.h
     motion_emu.cpp
     motion_emu.h
+    motion_from_button.cpp
+    motion_from_button.h
     motion_input.cpp
     motion_input.h
     settings.cpp
diff --git a/src/input_common/main.cpp b/src/input_common/main.cpp
index 8da829132..3d97d95f7 100644
--- a/src/input_common/main.cpp
+++ b/src/input_common/main.cpp
@@ -11,6 +11,7 @@
 #include "input_common/keyboard.h"
 #include "input_common/main.h"
 #include "input_common/motion_emu.h"
+#include "input_common/motion_from_button.h"
 #include "input_common/touch_from_button.h"
 #include "input_common/udp/client.h"
 #include "input_common/udp/udp.h"
@@ -32,6 +33,8 @@ struct InputSubsystem::Impl {
         Input::RegisterFactory<Input::ButtonDevice>("keyboard", keyboard);
         Input::RegisterFactory<Input::AnalogDevice>("analog_from_button",
                                                     std::make_shared<AnalogFromButton>());
+        Input::RegisterFactory<Input::MotionDevice>("keyboard",
+                                                    std::make_shared<MotionFromButton>());
         motion_emu = std::make_shared<MotionEmu>();
         Input::RegisterFactory<Input::MotionDevice>("motion_emu", motion_emu);
         Input::RegisterFactory<Input::TouchDevice>("touch_from_button",
@@ -50,6 +53,7 @@ struct InputSubsystem::Impl {
 
     void Shutdown() {
         Input::UnregisterFactory<Input::ButtonDevice>("keyboard");
+        Input::UnregisterFactory<Input::MotionDevice>("keyboard");
         keyboard.reset();
         Input::UnregisterFactory<Input::AnalogDevice>("analog_from_button");
         Input::UnregisterFactory<Input::MotionDevice>("motion_emu");
diff --git a/src/input_common/motion_from_button.cpp b/src/input_common/motion_from_button.cpp
new file mode 100644
index 000000000..9d459f963
--- /dev/null
+++ b/src/input_common/motion_from_button.cpp
@@ -0,0 +1,34 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "input_common/motion_from_button.h"
+#include "input_common/motion_input.h"
+
+namespace InputCommon {
+
+class MotionKey final : public Input::MotionDevice {
+public:
+    using Button = std::unique_ptr<Input::ButtonDevice>;
+
+    MotionKey(Button key_) : key(std::move(key_)) {}
+
+    Input::MotionStatus GetStatus() const override {
+
+        if (key->GetStatus()) {
+            return motion.GetRandomMotion(2, 6);
+        }
+        return motion.GetRandomMotion(0, 0);
+    }
+
+private:
+    Button key;
+    InputCommon::MotionInput motion{0.0f, 0.0f, 0.0f};
+};
+
+std::unique_ptr<Input::MotionDevice> MotionFromButton::Create(const Common::ParamPackage& params) {
+    auto key = Input::CreateDevice<Input::ButtonDevice>(params.Serialize());
+    return std::make_unique<MotionKey>(std::move(key));
+}
+
+} // namespace InputCommon
diff --git a/src/input_common/motion_from_button.h b/src/input_common/motion_from_button.h
new file mode 100644
index 000000000..a959046fb
--- /dev/null
+++ b/src/input_common/motion_from_button.h
@@ -0,0 +1,25 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/frontend/input.h"
+
+namespace InputCommon {
+
+/**
+ * An motion device factory that takes a keyboard button and uses it as a random
+ * motion device.
+ */
+class MotionFromButton final : public Input::Factory<Input::MotionDevice> {
+public:
+    /**
+     * Creates an motion device from button devices
+     * @param params contains parameters for creating the device:
+     *     - "key": a serialized ParamPackage for creating a button device
+     */
+    std::unique_ptr<Input::MotionDevice> Create(const Common::ParamPackage& params) override;
+};
+
+} // namespace InputCommon
diff --git a/src/input_common/motion_input.cpp b/src/input_common/motion_input.cpp
index 22a849866..e89019723 100644
--- a/src/input_common/motion_input.cpp
+++ b/src/input_common/motion_input.cpp
@@ -2,6 +2,7 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included
 
+#include <random>
 #include "common/math_util.h"
 #include "input_common/motion_input.h"
 
@@ -16,8 +17,16 @@ void MotionInput::SetAcceleration(const Common::Vec3f& acceleration) {
 
 void MotionInput::SetGyroscope(const Common::Vec3f& gyroscope) {
     gyro = gyroscope - gyro_drift;
+
+    // Auto adjust drift to minimize drift
+    if (!IsMoving(0.1f)) {
+        gyro_drift = (gyro_drift * 0.9999f) + (gyroscope * 0.0001f);
+    }
+
     if (gyro.Length2() < gyro_threshold) {
         gyro = {};
+    } else {
+        only_accelerometer = false;
     }
 }
 
@@ -68,7 +77,7 @@ void MotionInput::UpdateOrientation(u64 elapsed_time) {
     f32 q4 = quat.xyz[2];
     const f32 sample_period = elapsed_time / 1000000.0f;
 
-    // ignore invalid elapsed time
+    // Ignore invalid elapsed time
     if (sample_period > 0.1f) {
         return;
     }
@@ -80,6 +89,13 @@ void MotionInput::UpdateOrientation(u64 elapsed_time) {
     rad_gyro.y = -swap;
     rad_gyro.z = -rad_gyro.z;
 
+    // Clear gyro values if there is no gyro present
+    if (only_accelerometer) {
+        rad_gyro.x = 0;
+        rad_gyro.y = 0;
+        rad_gyro.z = 0;
+    }
+
     // Ignore drift correction if acceleration is not reliable
     if (accel.Length() >= 0.75f && accel.Length() <= 1.25f) {
         const f32 ax = -normal_accel.x;
@@ -92,8 +108,11 @@ void MotionInput::UpdateOrientation(u64 elapsed_time) {
         const f32 vz = q1 * q1 - q2 * q2 - q3 * q3 + q4 * q4;
 
         // Error is cross product between estimated direction and measured direction of gravity
-        const Common::Vec3f new_real_error = {az * vx - ax * vz, ay * vz - az * vy,
-                                              ax * vy - ay * vx};
+        const Common::Vec3f new_real_error = {
+            az * vx - ax * vz,
+            ay * vz - az * vy,
+            ax * vy - ay * vx,
+        };
 
         derivative_error = new_real_error - real_error;
         real_error = new_real_error;
@@ -106,9 +125,22 @@ void MotionInput::UpdateOrientation(u64 elapsed_time) {
         }
 
         // Apply feedback terms
-        rad_gyro += kp * real_error;
-        rad_gyro += ki * integral_error;
-        rad_gyro += kd * derivative_error;
+        if (!only_accelerometer) {
+            rad_gyro += kp * real_error;
+            rad_gyro += ki * integral_error;
+            rad_gyro += kd * derivative_error;
+        } else {
+            // Give more weight to acelerometer values to compensate for the lack of gyro
+            rad_gyro += 35.0f * kp * real_error;
+            rad_gyro += 10.0f * ki * integral_error;
+            rad_gyro += 10.0f * kd * derivative_error;
+
+            // Emulate gyro values for games that need them
+            gyro.x = -rad_gyro.y;
+            gyro.y = rad_gyro.x;
+            gyro.z = -rad_gyro.z;
+            UpdateRotation(elapsed_time);
+        }
     }
 
     const f32 gx = rad_gyro.y;
@@ -159,18 +191,49 @@ Common::Vec3f MotionInput::GetRotations() const {
     return rotations;
 }
 
+Input::MotionStatus MotionInput::GetMotion() const {
+    const Common::Vec3f gyroscope = GetGyroscope();
+    const Common::Vec3f accelerometer = GetAcceleration();
+    const Common::Vec3f rotation = GetRotations();
+    const std::array<Common::Vec3f, 3> orientation = GetOrientation();
+    return {accelerometer, gyroscope, rotation, orientation};
+}
+
+Input::MotionStatus MotionInput::GetRandomMotion(int accel_magnitude, int gyro_magnitude) const {
+    std::random_device device;
+    std::mt19937 gen(device());
+    std::uniform_int_distribution<s16> distribution(-1000, 1000);
+    const Common::Vec3f gyroscope = {
+        distribution(gen) * 0.001f,
+        distribution(gen) * 0.001f,
+        distribution(gen) * 0.001f,
+    };
+    const Common::Vec3f accelerometer = {
+        distribution(gen) * 0.001f,
+        distribution(gen) * 0.001f,
+        distribution(gen) * 0.001f,
+    };
+    const Common::Vec3f rotation = {};
+    const std::array<Common::Vec3f, 3> orientation = {
+        Common::Vec3f{1.0f, 0, 0},
+        Common::Vec3f{0, 1.0f, 0},
+        Common::Vec3f{0, 0, 1.0f},
+    };
+    return {accelerometer * accel_magnitude, gyroscope * gyro_magnitude, rotation, orientation};
+}
+
 void MotionInput::ResetOrientation() {
-    if (!reset_enabled) {
+    if (!reset_enabled || only_accelerometer) {
         return;
     }
     if (!IsMoving(0.5f) && accel.z <= -0.9f) {
         ++reset_counter;
         if (reset_counter > 900) {
-            // TODO: calculate quaternion from gravity vector
             quat.w = 0;
             quat.xyz[0] = 0;
             quat.xyz[1] = 0;
             quat.xyz[2] = -1;
+            SetOrientationFromAccelerometer();
             integral_error = {};
             reset_counter = 0;
         }
@@ -178,4 +241,65 @@ void MotionInput::ResetOrientation() {
         reset_counter = 0;
     }
 }
+
+void MotionInput::SetOrientationFromAccelerometer() {
+    int iterations = 0;
+    const f32 sample_period = 0.015f;
+
+    const auto normal_accel = accel.Normalized();
+    const f32 ax = -normal_accel.x;
+    const f32 ay = normal_accel.y;
+    const f32 az = -normal_accel.z;
+
+    while (!IsCalibrated(0.01f) && ++iterations < 100) {
+        // Short name local variable for readability
+        f32 q1 = quat.w;
+        f32 q2 = quat.xyz[0];
+        f32 q3 = quat.xyz[1];
+        f32 q4 = quat.xyz[2];
+
+        Common::Vec3f rad_gyro = {};
+        const f32 ax = -normal_accel.x;
+        const f32 ay = normal_accel.y;
+        const f32 az = -normal_accel.z;
+
+        // Estimated direction of gravity
+        const f32 vx = 2.0f * (q2 * q4 - q1 * q3);
+        const f32 vy = 2.0f * (q1 * q2 + q3 * q4);
+        const f32 vz = q1 * q1 - q2 * q2 - q3 * q3 + q4 * q4;
+
+        // Error is cross product between estimated direction and measured direction of gravity
+        const Common::Vec3f new_real_error = {
+            az * vx - ax * vz,
+            ay * vz - az * vy,
+            ax * vy - ay * vx,
+        };
+
+        derivative_error = new_real_error - real_error;
+        real_error = new_real_error;
+
+        rad_gyro += 10.0f * kp * real_error;
+        rad_gyro += 5.0f * ki * integral_error;
+        rad_gyro += 10.0f * kd * derivative_error;
+
+        const f32 gx = rad_gyro.y;
+        const f32 gy = rad_gyro.x;
+        const f32 gz = rad_gyro.z;
+
+        // Integrate rate of change of quaternion
+        const f32 pa = q2;
+        const f32 pb = q3;
+        const f32 pc = q4;
+        q1 = q1 + (-q2 * gx - q3 * gy - q4 * gz) * (0.5f * sample_period);
+        q2 = pa + (q1 * gx + pb * gz - pc * gy) * (0.5f * sample_period);
+        q3 = pb + (q1 * gy - pa * gz + pc * gx) * (0.5f * sample_period);
+        q4 = pc + (q1 * gz + pa * gy - pb * gx) * (0.5f * sample_period);
+
+        quat.w = q1;
+        quat.xyz[0] = q2;
+        quat.xyz[1] = q3;
+        quat.xyz[2] = q4;
+        quat = quat.Normalized();
+    }
+}
 } // namespace InputCommon
diff --git a/src/input_common/motion_input.h b/src/input_common/motion_input.h
index 54b4439d9..6342d0318 100644
--- a/src/input_common/motion_input.h
+++ b/src/input_common/motion_input.h
@@ -7,6 +7,7 @@
 #include "common/common_types.h"
 #include "common/quaternion.h"
 #include "common/vector_math.h"
+#include "core/frontend/input.h"
 
 namespace InputCommon {
 
@@ -37,12 +38,15 @@ public:
     Common::Vec3f GetGyroscope() const;
     Common::Vec3f GetRotations() const;
     Common::Quaternion<f32> GetQuaternion() const;
+    Input::MotionStatus GetMotion() const;
+    Input::MotionStatus GetRandomMotion(int accel_magnitude, int gyro_magnitude) const;
 
     bool IsMoving(f32 sensitivity) const;
     bool IsCalibrated(f32 sensitivity) const;
 
 private:
     void ResetOrientation();
+    void SetOrientationFromAccelerometer();
 
     // PID constants
     const f32 kp;
@@ -63,6 +67,7 @@ private:
     f32 gyro_threshold = 0.0f;
     u32 reset_counter = 0;
     bool reset_enabled = true;
+    bool only_accelerometer = true;
 };
 
 } // namespace InputCommon
diff --git a/src/input_common/sdl/sdl_impl.cpp b/src/input_common/sdl/sdl_impl.cpp
index 27a96c18b..bd480570a 100644
--- a/src/input_common/sdl/sdl_impl.cpp
+++ b/src/input_common/sdl/sdl_impl.cpp
@@ -22,6 +22,7 @@
 #include "common/param_package.h"
 #include "common/threadsafe_queue.h"
 #include "core/frontend/input.h"
+#include "input_common/motion_input.h"
 #include "input_common/sdl/sdl_impl.h"
 #include "input_common/settings.h"
 
@@ -123,6 +124,10 @@ public:
         return std::make_tuple(x, y);
     }
 
+    const InputCommon::MotionInput& GetMotion() const {
+        return motion;
+    }
+
     void SetHat(int hat, Uint8 direction) {
         std::lock_guard lock{mutex};
         state.hats.insert_or_assign(hat, direction);
@@ -173,6 +178,9 @@ private:
     std::unique_ptr<SDL_Joystick, decltype(&SDL_JoystickClose)> sdl_joystick;
     std::unique_ptr<SDL_GameController, decltype(&SDL_GameControllerClose)> sdl_controller;
     mutable std::mutex mutex;
+
+    // motion is initalized without PID values as motion input is not aviable for SDL2
+    InputCommon::MotionInput motion{0.0f, 0.0f, 0.0f};
 };
 
 std::shared_ptr<SDLJoystick> SDLState::GetSDLJoystickByGUID(const std::string& guid, int port) {
@@ -423,6 +431,68 @@ private:
     const float range;
 };
 
+class SDLDirectionMotion final : public Input::MotionDevice {
+public:
+    explicit SDLDirectionMotion(std::shared_ptr<SDLJoystick> joystick_, int hat_, Uint8 direction_)
+        : joystick(std::move(joystick_)), hat(hat_), direction(direction_) {}
+
+    Input::MotionStatus GetStatus() const override {
+        if (joystick->GetHatDirection(hat, direction)) {
+            return joystick->GetMotion().GetRandomMotion(2, 6);
+        }
+        return joystick->GetMotion().GetRandomMotion(0, 0);
+    }
+
+private:
+    std::shared_ptr<SDLJoystick> joystick;
+    int hat;
+    Uint8 direction;
+};
+
+class SDLAxisMotion final : public Input::MotionDevice {
+public:
+    explicit SDLAxisMotion(std::shared_ptr<SDLJoystick> joystick_, int axis_, float threshold_,
+                           bool trigger_if_greater_)
+        : joystick(std::move(joystick_)), axis(axis_), threshold(threshold_),
+          trigger_if_greater(trigger_if_greater_) {}
+
+    Input::MotionStatus GetStatus() const override {
+        const float axis_value = joystick->GetAxis(axis, 1.0f);
+        bool trigger = axis_value < threshold;
+        if (trigger_if_greater) {
+            trigger = axis_value > threshold;
+        }
+
+        if (trigger) {
+            return joystick->GetMotion().GetRandomMotion(2, 6);
+        }
+        return joystick->GetMotion().GetRandomMotion(0, 0);
+    }
+
+private:
+    std::shared_ptr<SDLJoystick> joystick;
+    int axis;
+    float threshold;
+    bool trigger_if_greater;
+};
+
+class SDLButtonMotion final : public Input::MotionDevice {
+public:
+    explicit SDLButtonMotion(std::shared_ptr<SDLJoystick> joystick_, int button_)
+        : joystick(std::move(joystick_)), button(button_) {}
+
+    Input::MotionStatus GetStatus() const override {
+        if (joystick->GetButton(button)) {
+            return joystick->GetMotion().GetRandomMotion(2, 6);
+        }
+        return joystick->GetMotion().GetRandomMotion(0, 0);
+    }
+
+private:
+    std::shared_ptr<SDLJoystick> joystick;
+    int button;
+};
+
 /// A button device factory that creates button devices from SDL joystick
 class SDLButtonFactory final : public Input::Factory<Input::ButtonDevice> {
 public:
@@ -529,12 +599,78 @@ private:
     SDLState& state;
 };
 
+/// A motion device factory that creates motion devices from SDL joystick
+class SDLMotionFactory final : public Input::Factory<Input::MotionDevice> {
+public:
+    explicit SDLMotionFactory(SDLState& state_) : state(state_) {}
+    /**
+     * Creates motion device from joystick axes
+     * @param params contains parameters for creating the device:
+     *     - "guid": the guid of the joystick to bind
+     *     - "port": the nth joystick of the same type
+     */
+    std::unique_ptr<Input::MotionDevice> Create(const Common::ParamPackage& params) override {
+        const std::string guid = params.Get("guid", "0");
+        const int port = params.Get("port", 0);
+
+        auto joystick = state.GetSDLJoystickByGUID(guid, port);
+
+        if (params.Has("hat")) {
+            const int hat = params.Get("hat", 0);
+            const std::string direction_name = params.Get("direction", "");
+            Uint8 direction;
+            if (direction_name == "up") {
+                direction = SDL_HAT_UP;
+            } else if (direction_name == "down") {
+                direction = SDL_HAT_DOWN;
+            } else if (direction_name == "left") {
+                direction = SDL_HAT_LEFT;
+            } else if (direction_name == "right") {
+                direction = SDL_HAT_RIGHT;
+            } else {
+                direction = 0;
+            }
+            // This is necessary so accessing GetHat with hat won't crash
+            joystick->SetHat(hat, SDL_HAT_CENTERED);
+            return std::make_unique<SDLDirectionMotion>(joystick, hat, direction);
+        }
+
+        if (params.Has("axis")) {
+            const int axis = params.Get("axis", 0);
+            const float threshold = params.Get("threshold", 0.5f);
+            const std::string direction_name = params.Get("direction", "");
+            bool trigger_if_greater;
+            if (direction_name == "+") {
+                trigger_if_greater = true;
+            } else if (direction_name == "-") {
+                trigger_if_greater = false;
+            } else {
+                trigger_if_greater = true;
+                LOG_ERROR(Input, "Unknown direction {}", direction_name);
+            }
+            // This is necessary so accessing GetAxis with axis won't crash
+            joystick->SetAxis(axis, 0);
+            return std::make_unique<SDLAxisMotion>(joystick, axis, threshold, trigger_if_greater);
+        }
+
+        const int button = params.Get("button", 0);
+        // This is necessary so accessing GetButton with button won't crash
+        joystick->SetButton(button, false);
+        return std::make_unique<SDLButtonMotion>(joystick, button);
+    }
+
+private:
+    SDLState& state;
+};
+
 SDLState::SDLState() {
     using namespace Input;
     analog_factory = std::make_shared<SDLAnalogFactory>(*this);
     button_factory = std::make_shared<SDLButtonFactory>(*this);
+    motion_factory = std::make_shared<SDLMotionFactory>(*this);
     RegisterFactory<AnalogDevice>("sdl", analog_factory);
     RegisterFactory<ButtonDevice>("sdl", button_factory);
+    RegisterFactory<MotionDevice>("sdl", motion_factory);
 
     // If the frontend is going to manage the event loop, then we dont start one here
     start_thread = !SDL_WasInit(SDL_INIT_JOYSTICK);
@@ -570,6 +706,7 @@ SDLState::~SDLState() {
     using namespace Input;
     UnregisterFactory<ButtonDevice>("sdl");
     UnregisterFactory<AnalogDevice>("sdl");
+    UnregisterFactory<MotionDevice>("sdl");
 
     CloseJoysticks();
     SDL_DelEventWatch(&SDLEventWatcher, this);
@@ -681,6 +818,27 @@ Common::ParamPackage SDLEventToButtonParamPackage(SDLState& state, const SDL_Eve
     return {};
 }
 
+Common::ParamPackage SDLEventToMotionParamPackage(SDLState& state, const SDL_Event& event) {
+    switch (event.type) {
+    case SDL_JOYAXISMOTION: {
+        const auto joystick = state.GetSDLJoystickBySDLID(event.jaxis.which);
+        return BuildAnalogParamPackageForButton(joystick->GetPort(), joystick->GetGUID(),
+                                                event.jaxis.axis, event.jaxis.value);
+    }
+    case SDL_JOYBUTTONUP: {
+        const auto joystick = state.GetSDLJoystickBySDLID(event.jbutton.which);
+        return BuildButtonParamPackageForButton(joystick->GetPort(), joystick->GetGUID(),
+                                                event.jbutton.button);
+    }
+    case SDL_JOYHATMOTION: {
+        const auto joystick = state.GetSDLJoystickBySDLID(event.jhat.which);
+        return BuildHatParamPackageForButton(joystick->GetPort(), joystick->GetGUID(),
+                                             event.jhat.hat, event.jhat.value);
+    }
+    }
+    return {};
+}
+
 Common::ParamPackage BuildParamPackageForBinding(int port, const std::string& guid,
                                                  const SDL_GameControllerButtonBind& binding) {
     switch (binding.bindType) {
@@ -846,6 +1004,35 @@ public:
     }
 };
 
+class SDLMotionPoller final : public SDLPoller {
+public:
+    explicit SDLMotionPoller(SDLState& state_) : SDLPoller(state_) {}
+
+    Common::ParamPackage GetNextInput() override {
+        SDL_Event event;
+        while (state.event_queue.Pop(event)) {
+            const auto package = FromEvent(event);
+            if (package) {
+                return *package;
+            }
+        }
+        return {};
+    }
+    [[nodiscard]] std::optional<Common::ParamPackage> FromEvent(const SDL_Event& event) const {
+        switch (event.type) {
+        case SDL_JOYAXISMOTION:
+            if (std::abs(event.jaxis.value / 32767.0) < 0.5) {
+                break;
+            }
+            [[fallthrough]];
+        case SDL_JOYBUTTONUP:
+        case SDL_JOYHATMOTION:
+            return {SDLEventToMotionParamPackage(state, event)};
+        }
+        return std::nullopt;
+    }
+};
+
 /**
  * Attempts to match the press to a controller joy axis (left/right stick) and if a match
  * isn't found, checks if the event matches anything from SDLButtonPoller and uses that
@@ -937,6 +1124,9 @@ SDLState::Pollers SDLState::GetPollers(InputCommon::Polling::DeviceType type) {
     case InputCommon::Polling::DeviceType::Button:
         pollers.emplace_back(std::make_unique<Polling::SDLButtonPoller>(*this));
         break;
+    case InputCommon::Polling::DeviceType::Motion:
+        pollers.emplace_back(std::make_unique<Polling::SDLMotionPoller>(*this));
+        break;
     }
 
     return pollers;
diff --git a/src/input_common/sdl/sdl_impl.h b/src/input_common/sdl/sdl_impl.h
index bd19ba61d..b9bb4dc56 100644
--- a/src/input_common/sdl/sdl_impl.h
+++ b/src/input_common/sdl/sdl_impl.h
@@ -21,6 +21,7 @@ namespace InputCommon::SDL {
 
 class SDLAnalogFactory;
 class SDLButtonFactory;
+class SDLMotionFactory;
 class SDLJoystick;
 
 class SDLState : public State {
@@ -71,6 +72,7 @@ private:
 
     std::shared_ptr<SDLButtonFactory> button_factory;
     std::shared_ptr<SDLAnalogFactory> analog_factory;
+    std::shared_ptr<SDLMotionFactory> motion_factory;
 
     bool start_thread = false;
     std::atomic<bool> initialized = false;
diff --git a/src/input_common/udp/client.cpp b/src/input_common/udp/client.cpp
index cf72f6fef..9d0b9f31d 100644
--- a/src/input_common/udp/client.cpp
+++ b/src/input_common/udp/client.cpp
@@ -219,14 +219,10 @@ void Client::OnPadData(Response::PadData data) {
     clients[client].motion.SetGyroscope(raw_gyroscope / 312.0f);
     clients[client].motion.UpdateRotation(time_difference);
     clients[client].motion.UpdateOrientation(time_difference);
-    Common::Vec3f gyroscope = clients[client].motion.GetGyroscope();
-    Common::Vec3f accelerometer = clients[client].motion.GetAcceleration();
-    Common::Vec3f rotation = clients[client].motion.GetRotations();
-    std::array<Common::Vec3f, 3> orientation = clients[client].motion.GetOrientation();
 
     {
         std::lock_guard guard(clients[client].status.update_mutex);
-        clients[client].status.motion_status = {accelerometer, gyroscope, rotation, orientation};
+        clients[client].status.motion_status = clients[client].motion.GetMotion();
 
         // TODO: add a setting for "click" touch. Click touch refers to a device that differentiates
         // between a simple "tap" and a hard press that causes the touch screen to click.
@@ -250,6 +246,8 @@ void Client::OnPadData(Response::PadData data) {
         clients[client].status.touch_status = {x, y, is_active};
 
         if (configuring) {
+            const Common::Vec3f gyroscope = clients[client].motion.GetGyroscope();
+            const Common::Vec3f accelerometer = clients[client].motion.GetAcceleration();
             UpdateYuzuSettings(client, accelerometer, gyroscope, is_active);
         }
     }
diff --git a/src/video_core/CMakeLists.txt b/src/video_core/CMakeLists.txt
index da9e9fdda..3df54816d 100644
--- a/src/video_core/CMakeLists.txt
+++ b/src/video_core/CMakeLists.txt
@@ -273,5 +273,12 @@ endif()
 if (MSVC)
     target_compile_options(video_core PRIVATE /we4267)
 else()
-    target_compile_options(video_core PRIVATE -Werror=conversion -Wno-error=sign-conversion -Werror=switch)
+    target_compile_options(video_core PRIVATE
+        -Werror=conversion
+        -Wno-error=sign-conversion
+        -Werror=switch
+        -Werror=unused-variable
+        -Werror=unused-but-set-variable
+        -Werror=class-memaccess
+    )
 endif()
diff --git a/src/video_core/engines/maxwell_dma.cpp b/src/video_core/engines/maxwell_dma.cpp
index e88290754..8fa359d0a 100644
--- a/src/video_core/engines/maxwell_dma.cpp
+++ b/src/video_core/engines/maxwell_dma.cpp
@@ -114,8 +114,6 @@ void MaxwellDMA::CopyBlockLinearToPitch() {
     const u32 block_depth = src_params.block_size.depth;
     const size_t src_size =
         CalculateSize(true, bytes_per_pixel, width, height, depth, block_height, block_depth);
-    const size_t src_layer_size =
-        CalculateSize(true, bytes_per_pixel, width, height, 1, block_height, block_depth);
 
     if (read_buffer.size() < src_size) {
         read_buffer.resize(src_size);
diff --git a/src/video_core/engines/shader_header.h b/src/video_core/engines/shader_header.h
index 72e2a33d5..ceec05459 100644
--- a/src/video_core/engines/shader_header.h
+++ b/src/video_core/engines/shader_header.h
@@ -41,30 +41,30 @@ struct Header {
         BitField<26, 1, u32> does_load_or_store;
         BitField<27, 1, u32> does_fp64;
         BitField<28, 4, u32> stream_out_mask;
-    } common0{};
+    } common0;
 
     union {
         BitField<0, 24, u32> shader_local_memory_low_size;
         BitField<24, 8, u32> per_patch_attribute_count;
-    } common1{};
+    } common1;
 
     union {
         BitField<0, 24, u32> shader_local_memory_high_size;
         BitField<24, 8, u32> threads_per_input_primitive;
-    } common2{};
+    } common2;
 
     union {
         BitField<0, 24, u32> shader_local_memory_crs_size;
         BitField<24, 4, OutputTopology> output_topology;
         BitField<28, 4, u32> reserved;
-    } common3{};
+    } common3;
 
     union {
         BitField<0, 12, u32> max_output_vertices;
         BitField<12, 8, u32> store_req_start; // NOTE: not used by geometry shaders.
         BitField<20, 4, u32> reserved;
         BitField<24, 8, u32> store_req_end; // NOTE: not used by geometry shaders.
-    } common4{};
+    } common4;
 
     union {
         struct {
@@ -145,7 +145,7 @@ struct Header {
             }
         } ps;
 
-        std::array<u32, 0xF> raw{};
+        std::array<u32, 0xF> raw;
     };
 
     u64 GetLocalMemorySize() const {
@@ -153,7 +153,6 @@ struct Header {
                 (common2.shader_local_memory_high_size << 24));
     }
 };
-
 static_assert(sizeof(Header) == 0x50, "Incorrect structure size");
 
 } // namespace Tegra::Shader
diff --git a/src/video_core/renderer_opengl/gl_device.cpp b/src/video_core/renderer_opengl/gl_device.cpp
index e7d95149f..a94e4f72e 100644
--- a/src/video_core/renderer_opengl/gl_device.cpp
+++ b/src/video_core/renderer_opengl/gl_device.cpp
@@ -193,7 +193,6 @@ bool IsASTCSupported() {
 Device::Device()
     : max_uniform_buffers{BuildMaxUniformBuffers()}, base_bindings{BuildBaseBindings()} {
     const std::string_view vendor = reinterpret_cast<const char*>(glGetString(GL_VENDOR));
-    const std::string_view renderer = reinterpret_cast<const char*>(glGetString(GL_RENDERER));
     const std::string_view version = reinterpret_cast<const char*>(glGetString(GL_VERSION));
     const std::vector extensions = GetExtensions();
 
diff --git a/src/video_core/renderer_vulkan/wrapper.cpp b/src/video_core/renderer_vulkan/wrapper.cpp
index 1fb14e190..2598440fb 100644
--- a/src/video_core/renderer_vulkan/wrapper.cpp
+++ b/src/video_core/renderer_vulkan/wrapper.cpp
@@ -6,6 +6,7 @@
 #include <exception>
 #include <memory>
 #include <optional>
+#include <string_view>
 #include <utility>
 #include <vector>
 
@@ -17,21 +18,42 @@ namespace Vulkan::vk {
 
 namespace {
 
+template <typename Func>
+void SortPhysicalDevices(std::vector<VkPhysicalDevice>& devices, const InstanceDispatch& dld,
+                         Func&& func) {
+    // Calling GetProperties calls Vulkan more than needed. But they are supposed to be cheap
+    // functions.
+    std::stable_sort(devices.begin(), devices.end(),
+                     [&dld, &func](VkPhysicalDevice lhs, VkPhysicalDevice rhs) {
+                         return func(vk::PhysicalDevice(lhs, dld).GetProperties(),
+                                     vk::PhysicalDevice(rhs, dld).GetProperties());
+                     });
+}
+
+void SortPhysicalDevicesPerVendor(std::vector<VkPhysicalDevice>& devices,
+                                  const InstanceDispatch& dld,
+                                  std::initializer_list<u32> vendor_ids) {
+    for (auto it = vendor_ids.end(); it != vendor_ids.begin();) {
+        --it;
+        SortPhysicalDevices(devices, dld, [id = *it](const auto& lhs, const auto& rhs) {
+            return lhs.vendorID == id && rhs.vendorID != id;
+        });
+    }
+}
+
 void SortPhysicalDevices(std::vector<VkPhysicalDevice>& devices, const InstanceDispatch& dld) {
-    std::stable_sort(devices.begin(), devices.end(), [&](auto lhs, auto rhs) {
-        // This will call Vulkan more than needed, but these calls are cheap.
-        const auto lhs_properties = vk::PhysicalDevice(lhs, dld).GetProperties();
-        const auto rhs_properties = vk::PhysicalDevice(rhs, dld).GetProperties();
-
-        // Prefer discrete GPUs, Nvidia over AMD, AMD over Intel, Intel over the rest.
-        const bool preferred =
-            (lhs_properties.deviceType == VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU &&
-             rhs_properties.deviceType != VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU) ||
-            (lhs_properties.vendorID == 0x10DE && rhs_properties.vendorID != 0x10DE) ||
-            (lhs_properties.vendorID == 0x1002 && rhs_properties.vendorID != 0x1002) ||
-            (lhs_properties.vendorID == 0x8086 && rhs_properties.vendorID != 0x8086);
-        return !preferred;
+    // Sort by name, this will set a base and make GPUs with higher numbers appear first
+    // (e.g. GTX 1650 will intentionally be listed before a GTX 1080).
+    SortPhysicalDevices(devices, dld, [](const auto& lhs, const auto& rhs) {
+        return std::string_view{lhs.deviceName} > std::string_view{rhs.deviceName};
+    });
+    // Prefer discrete over non-discrete
+    SortPhysicalDevices(devices, dld, [](const auto& lhs, const auto& rhs) {
+        return lhs.deviceType == VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU &&
+               rhs.deviceType != VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU;
     });
+    // Prefer Nvidia over AMD, AMD over Intel, Intel over the rest.
+    SortPhysicalDevicesPerVendor(devices, dld, {0x10DE, 0x1002, 0x8086});
 }
 
 template <typename T>