Fix MinecraftForge/MinecraftForge#9118

forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/entity_pose_stack/LivingEntityRendererMixin.java

@@ -0,0 +1,30 @@
+package org.embeddedt.modernfix.forge.mixin.bugfix.entity_pose_stack;
+
+import com.mojang.blaze3d.vertex.PoseStack;
+import net.minecraft.client.renderer.entity.LivingEntityRenderer;
+import net.minecraftforge.client.event.RenderLivingEvent;
+import net.minecraftforge.eventbus.api.Event;
+import net.minecraftforge.eventbus.api.IEventBus;
+import org.embeddedt.modernfix.annotation.ClientOnlyMixin;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(LivingEntityRenderer.class)
+@ClientOnlyMixin
+public class LivingEntityRendererMixin {
+    @Redirect(method = "render(Lnet/minecraft/world/entity/LivingEntity;FFLcom/mojang/blaze3d/vertex/PoseStack;Lnet/minecraft/client/renderer/MultiBufferSource;I)V", at = @At(value = "INVOKE", target = "Lnet/minecraftforge/eventbus/api/IEventBus;post(Lnet/minecraftforge/eventbus/api/Event;)Z", ordinal = 0))
+    private boolean fireCheckingPoseStack(IEventBus instance, Event event) {
+        PoseStack stack = ((RenderLivingEvent)event).getMatrixStack();
+        int size = ((PoseStackAccessor)stack).getPoseStack().size();
+        if (instance.post(event)) {
+            // Pop the stack if someone pushed it in the event
+            while (((PoseStackAccessor)stack).getPoseStack().size() > size) {
+                stack.popPose();
+            }
+            return true;
+        } else {
+            return false;
+        }
+    }
+}

forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/entity_pose_stack/PlayerRendererMixin.java

@@ -0,0 +1,30 @@
+package org.embeddedt.modernfix.forge.mixin.bugfix.entity_pose_stack;
+
+import com.mojang.blaze3d.vertex.PoseStack;
+import net.minecraft.client.renderer.entity.player.PlayerRenderer;
+import net.minecraftforge.client.event.RenderPlayerEvent;
+import net.minecraftforge.eventbus.api.Event;
+import net.minecraftforge.eventbus.api.IEventBus;
+import org.embeddedt.modernfix.annotation.ClientOnlyMixin;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(PlayerRenderer.class)
+@ClientOnlyMixin
+public class PlayerRendererMixin {
+    @Redirect(method = "render(Lnet/minecraft/client/player/AbstractClientPlayer;FFLcom/mojang/blaze3d/vertex/PoseStack;Lnet/minecraft/client/renderer/MultiBufferSource;I)V", at = @At(value = "INVOKE", target = "Lnet/minecraftforge/eventbus/api/IEventBus;post(Lnet/minecraftforge/eventbus/api/Event;)Z", ordinal = 0))
+    private boolean fireCheckingPoseStack(IEventBus instance, Event event) {
+        PoseStack stack = ((RenderPlayerEvent)event).getMatrixStack();
+        int size = ((PoseStackAccessor)stack).getPoseStack().size();
+        if (instance.post(event)) {
+            // Pop the stack if someone pushed it in the event
+            while (((PoseStackAccessor)stack).getPoseStack().size() > size) {
+                stack.popPose();
+            }
+            return true;
+        } else {
+            return false;
+        }
+    }
+}

forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/entity_pose_stack/PoseStackAccessor.java

@@ -0,0 +1,15 @@
+package org.embeddedt.modernfix.forge.mixin.bugfix.entity_pose_stack;
+
+import com.mojang.blaze3d.vertex.PoseStack;
+import org.embeddedt.modernfix.annotation.ClientOnlyMixin;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.gen.Accessor;
+
+import java.util.Deque;
+
+@Mixin(PoseStack.class)
+@ClientOnlyMixin
+public interface PoseStackAccessor {
+    @Accessor
+    Deque<PoseStack.Pose> getPoseStack();
+}