Revert "Fix frustum culling being too aggressive at some positions/an…

…gles"

This fix was actually wrong. The correct fix has now been applied.

src/main/java/me/jellysquid/mods/sodium/mixin/core/render/frustum/FrustumMixin.java

@@ -1,7 +1,6 @@
 package me.jellysquid.mods.sodium.mixin.core.render.frustum;
 
 import com.mojang.math.Matrix4f;
-import com.mojang.math.Vector4f;
 import me.jellysquid.mods.sodium.client.render.viewport.frustum.SimpleFrustum;
 import net.minecraft.client.renderer.culling.Frustum;
 import me.jellysquid.mods.sodium.client.render.viewport.Viewport;
@@ -14,7 +13,6 @@
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
-import org.spongepowered.asm.mixin.injection.callback.LocalCapture;
 
 @Mixin(Frustum.class)
 public class FrustumMixin implements ViewportProvider {
@@ -27,50 +25,13 @@ public class FrustumMixin implements ViewportProvider {
     @Shadow
     private double camZ;
 
-    private Vector4f embeddium$viewVector;
-
     private FrustumIntersection intersectionMatrix;
 
     @Inject(method = "<init>(Lcom/mojang/math/Matrix4f;Lcom/mojang/math/Matrix4f;)V", at = @At("RETURN"))
     private void initFrustum(Matrix4f pProjection, Matrix4f pFrustum, CallbackInfo ci) {
         this.intersectionMatrix = new FrustumIntersection(JomlHelper.copy(pFrustum).mul(JomlHelper.copy(pProjection)), false);
     }
 
-    /**
-     * @author embeddedt
-     * @reason backported magic from modern MC to fix frustum giving false results at some angles
-     */
-    @Inject(method = "prepare", at = @At("RETURN"))
-    private void offsetToFullyIncludeCameraCube(double camX, double camY, double camZ, CallbackInfo ci) {
-        if (this.embeddium$viewVector == null || Float.isNaN(this.embeddium$viewVector.x()) || Float.isNaN(this.embeddium$viewVector.y())
-                || Float.isNaN(this.embeddium$viewVector.z()) || Float.isNaN(this.embeddium$viewVector.w())) {
-            // 1.16 quirk - do nothing
-            return;
-        }
-        int offset = 8;
-        double fX = Math.floor(this.camX / (double)offset) * (double)offset;
-        double fY = Math.floor(this.camY / (double)offset) * (double)offset;
-        double fZ = Math.floor(this.camZ / (double)offset) * (double)offset;
-        double cX = Math.ceil(this.camX / (double)offset) * (double)offset;
-        double cY = Math.ceil(this.camY / (double)offset) * (double)offset;
-        double cZ = Math.ceil(this.camZ / (double)offset) * (double)offset;
-
-        while (this.intersectionMatrix.intersectAab(
-                (float)(fX - this.camX), (float)(fY - this.camY), (float)(fZ - this.camZ),
-                (float)(cX - this.camX), (float)(cY - this.camY), (float)(cZ - this.camZ))
-                != FrustumIntersection.INSIDE) {
-            this.camX = this.camX - (double)(this.embeddium$viewVector.x() * 4.0F);
-            this.camY = this.camY - (double)(this.embeddium$viewVector.y() * 4.0F);
-            this.camZ = this.camZ - (double)(this.embeddium$viewVector.z() * 4.0F);
-        }
-    }
-
-    @Inject(method = "calculateFrustum", at = @At("RETURN"), locals = LocalCapture.CAPTURE_FAILHARD)
-    private void calculateViewVector(Matrix4f projection, Matrix4f frustrumMatrix, CallbackInfo ci, Matrix4f frustumPlaneMatrix) {
-        this.embeddium$viewVector = new Vector4f(0, 0, 1, 0);
-        this.embeddium$viewVector.transform(frustumPlaneMatrix);
-    }
-
     @Override
     public Viewport sodium$createViewport() {
         return new Viewport(new SimpleFrustum(this.intersectionMatrix), new Vector3d(this.camX, this.camY, this.camZ));