Pattern Rendering and other Rendering

src/main/java/appeng/mixins/RenderEncodedPatternMixin.java

@@ -0,0 +1,26 @@
+package appeng.mixins;
+
+import appeng.hooks.ItemRendererHooks;
+import net.minecraft.client.render.item.ItemRenderer;
+import net.minecraft.client.render.model.BakedModel;
+import net.minecraft.item.ItemStack;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+/**
+ * This mixin specifically targets rendering of items in the user interface to allow us to
+ * customize _only_ the UI representation of an item, and none of the others (held items, in-world, etc.)
+ */
+@Mixin(ItemRenderer.class)
+public abstract class RenderEncodedPatternMixin {
+
+    @Inject(method = "renderGuiItemModel", at = @At("HEAD"), cancellable = true)
+    protected void renderGuiItemModel(ItemStack stack, int x, int y, BakedModel model, CallbackInfo ci) {
+        if (ItemRendererHooks.onRenderGuiItemModel((ItemRenderer) (Object) this, stack, x, y, model)) {
+            ci.cancel();
+        }
+    }
+
+}