Refactor GraphicsTuner, no longer tanks performance when open (#2365)

* Sort includes, move logic into ConfigVars, add reusable helpers

* Refactor GraphicsTuner, only refresh labels when actually needed

src/dusk/settings.cpp

@@ -1,8 +1,12 @@
 #include "dusk/settings.h"
-#include <aurora/aurora.h>
+
 #include "dusk/config.hpp"
-#include "dusk/ui/ui.hpp"
 #include "dusk/game_mode.hpp"
+#include "dusk/texture_replacements.hpp"
+#include "dusk/ui/ui.hpp"
+
+#include <aurora/aurora.h>
+#include <dolphin/vi.h>
 
 namespace dusk {
 
@@ -221,6 +225,22 @@ UserSettings& getSettings() {
     return g_userSettings;
 }
 
+void applyInternalResolutionScale(int scale) {
+    VISetFrameBufferScale(static_cast<float>(scale));
+}
+
+void applyResampler(Resampler resampler) {
+    switch (resampler) {
+    case Resampler::Area:
+        aurora_set_resampler(SAMPLER_AREA);
+        break;
+    case Resampler::Bilinear:
+    default:
+        aurora_set_resampler(SAMPLER_BILINEAR);
+        break;
+    }
+}
+
 void registerSettings() {
     // Video
     Register(g_userSettings.video.enableFullscreen);
@@ -286,9 +306,12 @@ void registerSettings() {
     Register(g_userSettings.game.bloomMultiplier);
     Register(g_userSettings.game.depthOfFieldMode);
     Register(g_userSettings.game.disableWaterRefraction);
-    Register(g_userSettings.game.enableTextureReplacements);
-    Register(g_userSettings.game.internalResolutionScale);
-    Register(g_userSettings.game.resampler);
+    Register(g_userSettings.game.enableTextureReplacements,
+        [](const bool&, const bool&) { texture_replacements::reload(); });
+    Register(g_userSettings.game.internalResolutionScale,
+        [](const int& value, const int&) { applyInternalResolutionScale(value); });
+    Register(g_userSettings.game.resampler,
+        [](const Resampler& value, const Resampler&) { applyResampler(value); });
     Register(g_userSettings.game.shadowResolutionMultiplier);
     Register(g_userSettings.game.enableMapBackground);
     Register(g_userSettings.game.disableCutscenePillarboxing);