From c7861b6066332e92e27d42b937edd95de954b6e3 Mon Sep 17 00:00:00 2001
From: ev chang <wyvestbusiness@gmail.com>
Date: Thu, 25 Jul 2024 02:24:53 +0900
Subject: [PATCH] OptiFine Custom Sky Fix

---
 .../sk1er/patcher/config/PatcherConfig.java   | 19 ++++++++++++++++---
 .../RenderGlobalMixin_FixSkyVBOs.java         | 15 +++++++++++++--
 2 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/src/main/java/club/sk1er/patcher/config/PatcherConfig.java b/src/main/java/club/sk1er/patcher/config/PatcherConfig.java
index 18b39b26b..96a39e813 100644
--- a/src/main/java/club/sk1er/patcher/config/PatcherConfig.java
+++ b/src/main/java/club/sk1er/patcher/config/PatcherConfig.java
@@ -73,11 +73,24 @@ public class PatcherConfig extends Config {
     @Switch(
         name = "Player Void Rendering",
         description = "Resolve the black box around the player while in the void.",
-        category = "Bug Fixes", subcategory = "Rendering",
-        size = 2
+        category = "Bug Fixes", subcategory = "Rendering", size = 2
     )
     public static boolean playerVoidRendering = true;
 
+    @Info(
+        text = "OptiFine Custom Sky Fix also changes the rendering of the normal sky. Some people may prefer the original rendering.",
+        category = "Bug Fixes", subcategory = "Rendering",
+        type = InfoType.WARNING, size = 2
+    )
+    private static String customSkyFixInfo = "";
+
+    @Switch(
+        name = "OptiFine Custom Sky Fix",
+        description = "Resolve OptiFine creating a \"black box\" effect at the bottom of the sky when using custom skies.",
+        category = "Bug Fixes", subcategory = "Rendering", size = 2
+    )
+    public static boolean customSkyFix = true;
+
     @Info(
         text = "Alex Arm Position requires a restart once toggled.",
         category = "Bug Fixes", subcategory = "Rendering",
@@ -1988,7 +2001,7 @@ public PatcherConfig() {
                 "scrollToZoom", "normalZoomSensitivity", "customZoomSensitivity", "smoothZoomAnimation",
                 "smoothZoomAnimationWhenScrolling", "smoothZoomAlgorithm", "toggleToZoom", "normalFpsCounter",
                 "useVanillaMetricsRenderer", "renderHandWhenZoomed", "smartFullbright", "smartEntityCulling",
-                "dynamicZoomSensitivity"
+                "dynamicZoomSensitivity", "customSkyFix"
             ).forEach(property -> hideIf(property, noOptiFine));
 
             Supplier<Boolean> smoothFontDetected = () -> ClassTransformer.smoothFontDetected;
diff --git a/src/main/java/club/sk1er/patcher/mixins/bugfixes/optifine/RenderGlobalMixin_FixSkyVBOs.java b/src/main/java/club/sk1er/patcher/mixins/bugfixes/optifine/RenderGlobalMixin_FixSkyVBOs.java
index 2bc1f190f..cdbc56b2d 100644
--- a/src/main/java/club/sk1er/patcher/mixins/bugfixes/optifine/RenderGlobalMixin_FixSkyVBOs.java
+++ b/src/main/java/club/sk1er/patcher/mixins/bugfixes/optifine/RenderGlobalMixin_FixSkyVBOs.java
@@ -1,15 +1,26 @@
 package club.sk1er.patcher.mixins.bugfixes.optifine;
 
+import club.sk1er.patcher.config.PatcherConfig;
 import net.minecraft.client.renderer.RenderGlobal;
 import org.objectweb.asm.Opcodes;
 import org.spongepowered.asm.mixin.Dynamic;
 import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Redirect;
 import org.spongepowered.asm.mixin.injection.Slice;
 
 @Mixin(RenderGlobal.class)
 public class RenderGlobalMixin_FixSkyVBOs {
+
+    @Dynamic("OptiFine")
+    @Shadow
+    private int renderDistance;
+
+    @Dynamic("OptiFine")
+    @Shadow
+    private boolean vboEnabled = false;
+
     @Dynamic("OptiFine")
     @Redirect(
         method = "renderSky(Lnet/minecraft/client/renderer/WorldRenderer;FZ)V",
@@ -21,7 +32,7 @@ public class RenderGlobalMixin_FixSkyVBOs {
         )
     )
     private int patcher$distanceOverride(RenderGlobal instance) {
-        return 256;
+        return PatcherConfig.customSkyFix ? 256 : this.renderDistance;
     }
 
     @Dynamic("OptiFine")
@@ -35,6 +46,6 @@ public class RenderGlobalMixin_FixSkyVBOs {
         )
     )
     private boolean patcher$fixVBO(RenderGlobal instance) {
-        return false;
+        return !PatcherConfig.customSkyFix && this.vboEnabled;
     }
 }