Do a similar fix as MixinDroppedItemGlintEdges to held items (#1632)

src/main/java/com/gtnewhorizons/angelica/mixins/Mixins.java

@@ -244,6 +244,7 @@ public enum Mixins implements IMixins {
         .setApplyIf(() -> AngelicaConfig.enableIris)
         .addClientMixins(
               "shaders.MixinDroppedItemGlintEdges"
+            , "shaders.MixinHeldItemGlintEdges"
             , "shaders.MixinEntityPickupFX"
             , "shaders.MixinEntityRenderer"
             , "shaders.MixinGuiIngameForge"

src/mixin/java/com/gtnewhorizons/angelica/mixins/early/shaders/MixinHeldItemGlintEdges.java

@@ -0,0 +1,50 @@
+package com.gtnewhorizons.angelica.mixins.early.shaders;
+
+import net.minecraft.client.renderer.ItemRenderer;
+import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.IIcon;
+import net.minecraftforge.client.IItemRenderer.ItemRenderType;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.ModifyArgs;
+import org.spongepowered.asm.mixin.injection.invoke.arg.Args;
+
+/**
+ * Fix enchantment glint not rendering on item edges by using the actual icon dimensions
+ * instead of hardcoded 256x256. This ensures the edge geometry calculation matches the
+ * main item render, allowing GL_EQUAL depth test to pass on all edges.
+ */
+@Mixin(ItemRenderer.class)
+public class MixinHeldItemGlintEdges {
+
+    /**
+     * First glint pass (ordinal 1)
+     */
+    @ModifyArgs(
+        method = "renderItem(Lnet/minecraft/entity/EntityLivingBase;Lnet/minecraft/item/ItemStack;ILnet/minecraftforge/client/IItemRenderer$ItemRenderType;)V",
+        at = @At(value = "INVOKE", target = "Lnet/minecraft/client/renderer/ItemRenderer;renderItemIn2D(Lnet/minecraft/client/renderer/Tessellator;FFFFIIF)V", ordinal = 1)
+    )
+    private void iris$fixFirstGlintDimensions(Args args, EntityLivingBase entity, ItemStack stack, int pass, ItemRenderType type) {
+        IIcon icon = entity.getItemIcon(stack, pass);
+        if (icon != null) {
+            args.set(5, icon.getIconWidth());
+            args.set(6, icon.getIconHeight());
+        }
+    }
+
+    /**
+     * Second glint pass (ordinal 2)
+     */
+    @ModifyArgs(
+        method = "renderItem(Lnet/minecraft/entity/EntityLivingBase;Lnet/minecraft/item/ItemStack;ILnet/minecraftforge/client/IItemRenderer$ItemRenderType;)V",
+        at = @At(value = "INVOKE", target = "Lnet/minecraft/client/renderer/ItemRenderer;renderItemIn2D(Lnet/minecraft/client/renderer/Tessellator;FFFFIIF)V", ordinal = 2)
+    )
+    private void iris$fixSecondGlintDimensions(Args args, EntityLivingBase entity, ItemStack stack, int pass, ItemRenderType type) {
+        IIcon icon = entity.getItemIcon(stack, pass);
+        if (icon != null) {
+            args.set(5, icon.getIconWidth());
+            args.set(6, icon.getIconHeight());
+        }
+    }
+}