fix some conversion warnings

src/citra_qt/bootmanager.cpp

@@ -230,8 +230,8 @@ void GRenderWindow::OnFramebufferSizeChanged() {
     // Screen changes potentially incur a change in screen DPI, hence we should update the
     // framebuffer size
     const qreal pixel_ratio = windowPixelRatio();
-    const u32 width = this->width() * pixel_ratio;
-    const u32 height = this->height() * pixel_ratio;
+    const u32 width = static_cast<u32>(this->width() * pixel_ratio);
+    const u32 height = static_cast<u32>(this->height() * pixel_ratio);
     UpdateCurrentFramebufferLayout(width, height);
 }
 

src/citra_qt/configuration/configure_audio.cpp

@@ -61,7 +61,7 @@ void ConfigureAudio::SetConfiguration() {
     SetAudioDeviceFromDeviceID();
 
     ui->toggle_audio_stretching->setChecked(Settings::values.enable_audio_stretching);
-    ui->volume_slider->setValue(Settings::values.volume * ui->volume_slider->maximum());
+    ui->volume_slider->setValue(static_cast<int>(Settings::values.volume * ui->volume_slider->maximum()));
     SetVolumeIndicatorText(ui->volume_slider->sliderPosition());
 
     int selection;

src/citra_qt/configuration/configure_camera.cpp

@@ -184,7 +184,7 @@ void ConfigureCamera::StartPreviewing() {
     ui->preview_box->setHidden(false);
     ui->preview_button->setHidden(true);
     preview_width = ui->preview_box->size().width();
-    preview_height = preview_width * 0.75;
+    preview_height = static_cast<int>(preview_width * 0.75);
     ui->preview_box->setToolTip(
         tr("Resolution: %1*%2")
             .arg(QString::number(preview_width), QString::number(preview_height)));
@@ -232,7 +232,7 @@ void ConfigureCamera::timerEvent(QTimerEvent* event) {
     }
     std::vector<u16> frame = previewing_camera->ReceiveFrame();
     int width = ui->preview_box->size().width();
-    int height = width * 0.75;
+    int height = static_cast<int>(width * 0.75);
     if (width != preview_width || height != preview_height) {
         StopPreviewing();
         return;

src/citra_qt/configuration/configure_input.cpp

@@ -256,7 +256,7 @@ ConfigureInput::ConfigureInput(QWidget* parent)
             }
         });
         connect(analog_map_deadzone_and_modifier_slider[analog_id], &QSlider::valueChanged, [=] {
-            const float slider_value = analog_map_deadzone_and_modifier_slider[analog_id]->value();
+            const int slider_value = analog_map_deadzone_and_modifier_slider[analog_id]->value();
             if (analogs_param[analog_id].Get("engine", "") == "sdl") {
                 analog_map_deadzone_and_modifier_slider_label[analog_id]->setText(
                     tr("Deadzone: %1%").arg(slider_value));

src/video_core/renderer_opengl/gl_shader_decompiler.cpp

@@ -236,7 +236,7 @@ private:
 template <SwizzlePattern::Selector (SwizzlePattern::*getter)(int) const>
 std::string GetSelectorSrc(const SwizzlePattern& pattern) {
     std::string out;
-    for (std::size_t i = 0; i < 4; ++i) {
+    for (int i = 0; i < 4; ++i) {
         switch ((pattern.*getter)(i)) {
         case SwizzlePattern::Selector::x:
             out += 'x';