Implement sample shading option

app/src/main/cpp/skyline/common/android_settings.h

@@ -46,6 +46,7 @@ namespace skyline {
             useDirectMemoryImport = ktSettings.GetBool("useDirectMemoryImport");
             forceMaxGpuClocks = ktSettings.GetBool("forceMaxGpuClocks");
             disableShaderCache = ktSettings.GetBool("disableShaderCache");
+            enableSampleShading = ktSetting.GetBool("enableSampleShading");
             freeGuestTextureMemory = ktSettings.GetBool("freeGuestTextureMemory");
             enableFastGpuReadbackHack = ktSettings.GetBool("enableFastGpuReadbackHack");
             enableFastReadbackWrites = ktSettings.GetBool("enableFastReadbackWrites");

app/src/main/cpp/skyline/common/settings.h

@@ -84,6 +84,7 @@ namespace skyline {
         Setting<bool> useDirectMemoryImport; //!< If buffer emulation should be done by importing guest buffer mappings
         Setting<bool> forceMaxGpuClocks; //!< If the GPU should be forced to run at maximum clocks
         Setting<bool> freeGuestTextureMemory; //!< If guest textrue memory should be freed when the owning texture is GPU dirty
+        Setting<bool> enableSampleShading;
 
         // Hacks
         Setting<bool> enableFastGpuReadbackHack; //!< If the CPU texture readback skipping hack should be used

app/src/main/cpp/skyline/gpu/shaders/helper_shaders.cpp

@@ -70,7 +70,7 @@ namespace skyline::gpu {
 
         constexpr static vk::PipelineMultisampleStateCreateInfo multisampleState{
             .rasterizationSamples = vk::SampleCountFlagBits::e1,
-            .sampleShadingEnable = false,
+            .sampleShadingEnable = *state.settings->enableSampleShading,
             .minSampleShading = 1.0f,
             .alphaToCoverageEnable = false,
             .alphaToOneEnable = false

app/src/main/java/emu/skyline/settings/EmulationSettings.kt

@@ -59,6 +59,7 @@ class EmulationSettings private constructor(context : Context, prefName : String
     var freeGuestTextureMemory by sharedPreferences(context, true, prefName = prefName)
     var disableShaderCache by sharedPreferences(context, false, prefName = prefName)
     var enableDynamicResolution by sharedPreferences(context, false, prefName = prefName)
+    var enableSampleShading by sharedPreferences(context, false, prefName = prefName)
 
     // Hacks
     var enableFastGpuReadbackHack by sharedPreferences(context, false, prefName = prefName)

app/src/main/java/emu/skyline/settings/NativeSettings.kt

@@ -38,6 +38,7 @@ data class NativeSettings(
     var forceMaxGpuClocks : Boolean,
     var freeGuestTextureMemory : Boolean,
     var disableShaderCache : Boolean,
+    var enableSampleShading : Boolean,
 
     // Hacks
     var enableFastGpuReadbackHack : Boolean,
@@ -66,6 +67,7 @@ data class NativeSettings(
         pref.forceMaxGpuClocks,
         pref.freeGuestTextureMemory,
         pref.disableShaderCache,
+        pref.enableSampleShading,
         pref.enableFastGpuReadbackHack,
         pref.enableFastReadbackWrites,
         pref.disableSubgroupShuffle,

app/src/main/res/values/strings.xml

@@ -162,8 +162,10 @@
     <string name="shader_cache_disabled">Cached shaders won\'t be loaded, will cause stutters</string>
     <string name="shader_cache_enabled">Cached shaders will be loaded, can heavily reduce stuttering</string>
     <string name="enable_dynamic_resolution">Enable Dynamic Resolution</string>
-    <string name="enable_dynamic_resolution_enabled">the emulator will allow the GPU to dynamically adjust the resolution based on the current load. This can help maintain performance by lowering the resolution during high-load scenarios</string>
-    <string name="enable_dynamic_resolution_disabled">the emulator will report less elapsed GPU time than actually passed. This prevents the GPU from lowering the resolution, maintaining a consistent resolution regardless of load. This can result in smoother and more consistent visuals at the cost of potentially higher performance requirements</string>
+    <string name="enable_dynamic_resolution_enabled">The emulator will allow the GPU to dynamically adjust the resolution based on the current load. This can help maintain performance by lowering the resolution during high-load scenarios</string>
+    <string name="enable_dynamic_resolution_disabled">The emulator will report less elapsed GPU time than actually passed. This prevents the GPU from lowering the resolution, maintaining a consistent resolution regardless of load. This can result in smoother and more consistent visuals at the cost of potentially higher performance requirements</string>
+    <string name="enable_sample_shading">Enable Sample Shading</string>
+    <string name="enable_sample_shading_desc">May improve the quality of rendering at the cost of performance</string>
     <!-- Settings - Hacks -->
     <string name="hacks">Hacks</string>
     <string name="enable_fast_gpu_readback">Enable Fast GPU Readback</string>

app/src/main/res/xml/emulation_preferences.xml

@@ -173,14 +173,17 @@
             android:summaryOn="@string/shader_cache_disabled"
             app:key="disable_shader_cache"
             app:title="@string/shader_cache" />
-
         <SwitchPreferenceCompat
             android:defaultValue="false"
             android:summaryOff="@string/enable_dynamic_resolution_disabled"
             android:summaryOn="@string/enable_dynamic_resolution_enabled"
             app:key="enable_dynamic_resolution" 
             app:title="@string/enable_dynamic_resolution" />
-
+        <SwitchPreferenceCompat
+            android:defaultValue="false"
+            android:summary="@string/enable_sample_shading_desc"
+            app:key="enable_sample_shading"
+            app:title="@string/enable_sample_shading" />    
     </PreferenceCategory>
     <PreferenceCategory
         android:key="category_hacks"