Set auto default value for render thread count

Author: jojoe77777

src/main/java/me/jellysquid/mods/sodium/client/gui/SodiumGameOptions.java

@@ -39,8 +39,8 @@ public static class SpeedrunSettings implements SpeedrunConfigStorage {
         public boolean showEntityCulling = true;
         public boolean showFogOcclusion = true;
 
-        @Config.Numbers.Whole.Bounds(min = 1, max = 32)
-        public int renderThreads = 1;
+        @Config.Numbers.Whole.Bounds(min = 0, max = 32)
+        public int renderThreads = 0;
     }
 
     {

src/main/java/me/jellysquid/mods/sodium/client/render/chunk/compile/ChunkBuilder.java

@@ -18,6 +18,7 @@
 import me.jellysquid.mods.sodium.common.util.collections.DequeDrain;
 import net.minecraft.client.MinecraftClient;
 import net.minecraft.client.util.math.Vector3d;
+import net.minecraft.util.math.MathHelper;
 import net.minecraft.client.world.ClientWorld;
 import net.minecraft.world.World;
 import org.apache.logging.log4j.LogManager;
@@ -58,7 +59,24 @@ public class ChunkBuilder<T extends ChunkGraphicsState> {
     public ChunkBuilder(ChunkVertexType vertexType, ChunkRenderBackend<T> backend) {
         this.vertexType = vertexType;
         this.backend = backend;
-        this.limitThreads = SodiumClientMod.options().speedrun.renderThreads;
+        this.limitThreads = getThreadCount();
+    }
+
+    /**
+     * Returns the "optimal" number of threads to be used for chunk build tasks. This will always return at least one
+     * thread.
+     */
+    private static int getOptimalThreadCount() {
+        return MathHelper.clamp(Math.max(getMaxThreadCount() / 3, getMaxThreadCount() - 6), 1, 10);
+    }
+
+    private static int getThreadCount() {
+        int requested = SodiumClientMod.options().speedrun.renderThreads;
+        return requested == 0 ? getOptimalThreadCount() : Math.min(requested, getMaxThreadCount());
+    }
+
+    private static int getMaxThreadCount() {
+        return Runtime.getRuntime().availableProcessors();
     }
 
     /**
@@ -202,14 +220,6 @@ public void init(ClientWorld world, BlockRenderPassManager renderPassManager) {
         this.startWorkers();
     }
 
-    /**
-     * Returns the "optimal" number of threads to be used for chunk build tasks. This is always at least one thread,
-     * but can be up to the number of available processor threads on the system.
-     */
-    private static int getOptimalThreadCount() {
-        return Math.max(1, Runtime.getRuntime().availableProcessors());
-    }
-
     /**
      * Creates a rebuild task and defers it to the work queue. When the task is completed, it will be moved onto the
      * completed uploads queued which will then be drained during the next available synchronization point with the

src/main/resources/assets/sodium/lang/en_us.json

@@ -31,5 +31,6 @@
     "speedrunapi.config.sodium.option.speedrun:showFogOcclusion": "Show Fog Occlusion",
     "speedrunapi.config.sodium.option.speedrun:showFogOcclusion.description": "If enabled, Fog Occlusion will be added to the vanilla menu so it can be toggled while in a world.",
     "speedrunapi.config.sodium.option.speedrun:renderThreads": "Render Threads",
-    "speedrunapi.config.sodium.option.speedrun:renderThreads.description": "How many render threads to create (lower = less F3+F lag)"
+    "speedrunapi.config.sodium.option.speedrun:renderThreads.description": "How many render threads to create (lower = less F3+F lag)",
+    "speedrunapi.config.sodium.option.speedrun:renderThreads.value.0": "Auto"
 }