Enable relevant RT64 enhancements, fix pause background corruption if song of soaring was played before ever pausing

src/game/config.cpp

@@ -114,7 +114,7 @@ void recomp::reset_graphics_options() {
     new_config.wm_option = ultramodern::WindowMode::Windowed;
     new_config.ar_option = RT64::UserConfiguration::AspectRatio::Expand;
     new_config.msaa_option = RT64::UserConfiguration::Antialiasing::MSAA4X;
-    new_config.rr_option = RT64::UserConfiguration::RefreshRate::Original;
+    new_config.rr_option = RT64::UserConfiguration::RefreshRate::Display;
     new_config.rr_manual_value = 60;
     ultramodern::set_graphics_config(new_config);
 }

src/recomp/rt64_layer.cpp

@@ -201,6 +201,13 @@ RT64::Application* RT64Init(uint8_t* rom, uint8_t* rdram, ultramodern::WindowHan
 
     device_max_msaa = compute_max_supported_aa(common_sample_counts);
 
+    // Force gbi depth branches to prevent LODs from kicking in.
+    ret->enhancementConfig.f3dex.forceBranch = true;
+    // Scale LODs based on the output resolution.
+    ret->enhancementConfig.textureLOD.scale = true;
+
+    ret->updateEnhancementConfig();
+
     return ret;
 }
 
@@ -260,6 +267,13 @@ void RT64UpdateConfig(RT64::Application* application, const ultramodern::Graphic
     }
 }
 
+void RT64EnableInstantPresent(RT64::Application* application) {
+    // Enable the present early presentation mode for minimal latency.
+    application->enhancementConfig.presentation.mode = RT64::EnhancementConfiguration::Presentation::Mode::PresentEarly;
+
+    application->updateEnhancementConfig();
+}
+
 RT64::UserConfiguration::Antialiasing RT64MaxMSAA() {
     return device_max_msaa;
 }