Improve zoom culling, and make it toggleable

Yeah! My laptop didn't handle it well! but lowering the rendered chunks did help make the culling instantaneous once more;
Really, you can overwhelm Minecraft with too much terrain at once, and only Sodium can fix this (heck, throw shaders on top of it, you can get 50 FPS but Sodium will still fix the pipeline)

common/src/main/java/io/github/ennuil/ok_zoomer/config/OkZoomerConfig.java

@@ -151,6 +151,10 @@ public static class TweaksConfig extends Section  {
 		@Comment("Allows for resetting the zoom with the middle mouse button.")
 		public final TrackedValue<Boolean> resetZoomWithMouse = this.value(true);
 
+		@WidgetSize(Size.HALF)
+		@Comment("Improves performance by having the game render less of the world when not necessary while zoomed in. Disable this feature if you notice glitches on zooming out and if the game cannot be optimized any further.")
+		public final TrackedValue<Boolean> zoomAwareOcclusion = this.value(true);
+
 		@WidgetSize(Size.HALF)
 		@Comment("If enabled, the current zoom divisor is forgotten once zooming is finished.")
 		public final TrackedValue<Boolean> forgetZoomDivisor = this.value(true);

common/src/main/java/io/github/ennuil/ok_zoomer/events/ManageZoomEvent.java

@@ -95,8 +95,6 @@ public static void startClientTick(Minecraft minecraft) {
 			minecraft.player.playSound(soundDirection ? SoundEvents.SPYGLASS_USE : SoundEvents.SPYGLASS_STOP_USING, 1.0F, 1.0F);
 		}
 
-		ZoomUtils.validateZoomCulling(minecraft);
-
 		// Set the previous zoom signal for the next tick
 		lastZooming = zooming;
 	}

common/src/main/java/io/github/ennuil/ok_zoomer/mixin/common/GameRendererMixin.java

@@ -38,7 +38,7 @@ private void tickInstances(CallbackInfo info) {
 		)
 	)
 	private int modifyCulling(int original) {
-		if (!Zoom.isZooming()) {
+		if (!Zoom.isZooming() || !OkZoomerConfigManager.CONFIG.tweaks.zoomAwareOcclusion.value()) {
 			return original;
 		} else {
 			return Mth.positiveCeilDiv(original, Mth.floor(Zoom.getZoomDivisor()));

common/src/main/java/io/github/ennuil/ok_zoomer/mixin/common/LevelRendererMixin.java

@@ -0,0 +1,46 @@
+package io.github.ennuil.ok_zoomer.mixin.common;
+
+import io.github.ennuil.ok_zoomer.config.OkZoomerConfigManager;
+import io.github.ennuil.ok_zoomer.zoom.Zoom;
+import net.minecraft.client.Camera;
+import net.minecraft.client.renderer.LevelRenderer;
+import net.minecraft.client.renderer.SectionOcclusionGraph;
+import net.minecraft.client.renderer.culling.Frustum;
+import net.minecraft.util.Mth;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(LevelRenderer.class)
+public abstract class LevelRendererMixin {
+	@Shadow
+	@Final
+	private SectionOcclusionGraph sectionOcclusionGraph;
+
+	@Unique
+	private int prevZoomDivisor = 1;
+
+	@Inject(
+		method = "setupRender",
+		at = @At(
+			value = "FIELD",
+			target = "Lnet/minecraft/client/renderer/LevelRenderer;prevCamX:D",
+			ordinal = 1
+		)
+	)
+	private void accountForZooming(Camera camera, Frustum frustum, boolean hasCapturedFrustum, boolean isSpectator, CallbackInfo ci) {
+		if (OkZoomerConfigManager.CONFIG.tweaks.zoomAwareOcclusion.value()) {
+			int divisor = Zoom.isZooming() ? Mth.floor(Zoom.getZoomDivisor()) : 1;
+
+			if (divisor != this.prevZoomDivisor) {
+				this.sectionOcclusionGraph.invalidate();
+			}
+
+			this.prevZoomDivisor = divisor;
+		}
+	}
+}

common/src/main/java/io/github/ennuil/ok_zoomer/utils/ZoomUtils.java

@@ -34,23 +34,6 @@ public class ZoomUtils {
 
 	private static Predicate<LocalPlayer> hasSpyglass = player -> player.isCreative();
 
-	public static void validateZoomCulling() {
-		var minecraft = Minecraft.getInstance();
-		validateZoomCulling(minecraft);
-	}
-
-	public static void validateZoomCulling(Minecraft minecraft) {
-		int fov = minecraft.options.fov().get();
-		int divisor = Zoom.isZooming() ? Mth.floor(Zoom.getZoomDivisor()) : 1;
-		int zoomCullingFov = Math.ceilDiv(fov, divisor);
-
-		if (zoomCullingFov != lastZoomCullingFov) {
-			minecraft.levelRenderer.getSectionOcclusionGraph().invalidate();
-		}
-
-		lastZoomCullingFov = zoomCullingFov;
-	}
-
 	// The method used for changing the zoom divisor, used by zoom scrolling and the key binds
 	public static void changeZoomDivisor(Minecraft minecraft, boolean increase) {
 		double zoomDivisor = OkZoomerConfigManager.CONFIG.zoomValues.zoomDivisor.value();
@@ -61,8 +44,6 @@ public static void changeZoomDivisor(Minecraft minecraft, boolean increase) {
 
 		zoomStep = increase ? Math.min(zoomStep + 1, upperScrollStep) :  Math.max(zoomStep - 1, -lowerScrollStep);
 
-		validateZoomCulling(minecraft);
-
 		if (zoomStep > 0) {
 			Zoom.setZoomDivisor(zoomDivisor + ((maximumZoomDivisor - zoomDivisor) / upperScrollStep * zoomStep));
 		} else if (zoomStep == 0) {
@@ -78,9 +59,6 @@ public static void resetZoomDivisor(boolean userPrompted) {
 
 		Zoom.resetZoomDivisor();
 		zoomStep = 0;
-		if (userPrompted) {
-			validateZoomCulling();
-		}
 	}
 
 	public static void keepZoomStepsWithinBounds() {

common/src/main/resources/assets/ok_zoomer/lang/en_us.json

@@ -75,6 +75,8 @@
 	"config.ok_zoomer.tweaks.hide_crosshair.tooltip": "Hides the crosshair while zooming.",
 	"config.ok_zoomer.tweaks.reset_zoom_with_mouse": "Reset Zoom with Mouse",
 	"config.ok_zoomer.tweaks.reset_zoom_with_mouse.tooltip": "Allows for resetting the zoom with the middle mouse button.",
+	"config.ok_zoomer.tweaks.zoom_aware_occlusion": "Zoom-Aware Occlusion",
+	"config.ok_zoomer.tweaks.zoom_aware_occlusion.tooltip": "Improves performance by having the game render less of the world when not necessary while zoomed in. Disable this feature if you notice glitches on zooming out and if the game cannot be optimized any further.",
 	"config.ok_zoomer.tweaks.forget_zoom_divisor": "Forget Zoom Divisor",
 	"config.ok_zoomer.tweaks.forget_zoom_divisor.tooltip": "If enabled, the current zoom divisor is forgotten once zooming is finished.",
 	"config.ok_zoomer.tweaks.use_spyglass_sounds": "Use Spyglass Sounds",

common/src/main/resources/ok_zoomer.mixins.json

@@ -1,18 +1,19 @@
 {
-	"required": true,
-	"minVersion": "0.8",
-	"package": "io.github.ennuil.ok_zoomer.mixin",
-	"compatibilityLevel": "JAVA_21",
-	"client": [
-		"common.AbstractClientPlayerMixin",
-		"common.EditBoxAccessor",
-		"common.EditBoxMixin",
-		"common.GameRendererMixin",
-		"common.GuiMixin",
-		"common.MouseHandlerMixin",
-		"common.RenderStateShardMixin"
-	],
-	"injectors": {
-		"defaultRequire": 1
+  "required": true,
+  "minVersion": "0.8",
+  "package": "io.github.ennuil.ok_zoomer.mixin",
+  "compatibilityLevel": "JAVA_21",
+  "client": [
+    "common.AbstractClientPlayerMixin",
+    "common.EditBoxAccessor",
+    "common.EditBoxMixin",
+    "common.GameRendererMixin",
+    "common.GuiMixin",
+    "common.LevelRendererMixin",
+    "common.MouseHandlerMixin",
+    "common.RenderStateShardMixin"
+  ],
+  "injectors": {
+    "defaultRequire": 1
 	}
 }