New client config option to force all chunk rendering off the main thread.

This may help FPS issues, but may also result in world holes/rendering issues.
Also fix Forge configs not saving properly.

patches/minecraft/net/minecraft/client/renderer/RenderGlobal.java.patch

@@ -84,6 +84,15 @@
  
              this.func_180443_s();
  
+@@ -933,7 +948,7 @@
+                 BlockPos blockpos2 = renderchunk4.func_178568_j().func_177982_a(8, 8, 8);
+                 boolean flag3 = blockpos2.func_177951_i(blockpos1) < 768.0D;
+ 
+-                if (!renderchunk4.func_188281_o() && !flag3)
++                if (net.minecraftforge.common.ForgeModContainer.alwaysSetupTerrainOffThread || (!renderchunk4.func_188281_o() && !flag3))
+                 {
+                     this.field_175009_l.add(renderchunk4);
+                 }
 @@ -1220,6 +1235,13 @@
  
      public void func_174976_a(float p_174976_1_, int p_174976_2_)

src/main/java/net/minecraftforge/common/ForgeModContainer.java

@@ -114,6 +114,7 @@ public class ForgeModContainer extends DummyModContainer implements WorldAccessC
     public static boolean replaceVanillaBucketModel = true;
     public static long java8Reminder = 0;
     public static boolean disableStairSlabCulling = false; // Also known as the "DontCullStairsBecauseIUseACrappyTexturePackThatBreaksBasicBlockShapesSoICantTrustBasicBlockCulling" flag
+    public static boolean alwaysSetupTerrainOffThread = false; // In RenderGlobal.setupTerrain, always force the chunk render updates to be queued to the thread
 
     private static Configuration config;
     private static ForgeModContainer INSTANCE;
@@ -300,6 +301,13 @@ public class ForgeModContainer extends DummyModContainer implements WorldAccessC
         prop.setLanguageKey("forge.configgui.disableStairSlabCulling").setRequiresMcRestart(false);
         propOrder.add(prop.getName());
 
+        prop = config.get(Configuration.CATEGORY_CLIENT, "alwaysSetupTerrainOffThread", Boolean.FALSE,
+                "Enable forge to queue all chunk updates to the Chunk Update thread. May increase FPS significantly, but may also cause weird rendering lag. Not recommended for computers " +
+                "without a significant number of cores available.");
+        alwaysSetupTerrainOffThread = prop.getBoolean(Boolean.FALSE);
+        prop.setLanguageKey("forge.configgui.alwaysSetupTerrainOffThread");
+        propOrder.add(prop.getName());
+
         config.setCategoryPropertyOrder(CATEGORY_CLIENT, propOrder);
 
         if (config.hasChanged())
@@ -324,30 +332,22 @@ public class ForgeModContainer extends DummyModContainer implements WorldAccessC
     {
         if (getMetadata().modId.equals(event.getModID()))
         {
-            if (!event.isWorldRunning())
+            if ("chunkLoader".equals(event.getConfigID()))
             {
-                if (Configuration.CATEGORY_GENERAL.equals(event.getConfigID()))
-                {
-                    syncConfig(false);
-                }
-                else if ("chunkLoader".equals(event.getConfigID()))
-                {
-                    ForgeChunkManager.syncConfigDefaults();
-                    ForgeChunkManager.loadConfiguration();
-                }
-                else if (VERSION_CHECK_CAT.equals(event.getConfigID()))
-                {
-                    syncConfig(false);
-                }
+                ForgeChunkManager.syncConfigDefaults();
+                ForgeChunkManager.loadConfiguration();
             }
             else
             {
-                boolean tmp = config.get(Configuration.CATEGORY_CLIENT, "disableStairSlabCulling", disableStairSlabCulling).getBoolean();
-                if (disableStairSlabCulling != tmp)
+                boolean tmpStairs = disableStairSlabCulling;
+
+                syncConfig(false);
+
+                if (event.isWorldRunning() && tmpStairs != disableStairSlabCulling)
                 {
-                    disableStairSlabCulling = tmp;
                     FMLCommonHandler.instance().reloadRenderers();
                 }
+
             }
         }
     }

src/main/resources/assets/forge/lang/en_US.lang

@@ -50,6 +50,8 @@ forge.configgui.forgeLightPipelineEnabled=Forge Light Pipeline Enabled
 forge.configgui.java8Reminder=Java 8 Reminder timestamp
 forge.configgui.disableStairSlabCulling=Disable Stair/Slab culling.
 forge.configgui.disableStairSlabCulling.tooltip=Enable this if you see through blocks touching stairs/slabs with your resource pack.
+forge.configgui.alwaysSetupTerrainOffThread=Force threaded chunk rendering
+forge.configgui.alwaysSetupTerrainOffThread.tooltip=Enable forge to queue all chunk updates to the Chunk Update thread. May increase FPS significantly, but may also cause weird rendering lag. Not recommended for computers without a significant number of cores available.
 
 forge.configgui.modID.tooltip=The mod ID that you want to define override settings for.
 forge.configgui.modID=Mod ID