From 58c74e839c2193ad2119d4e5b7337f16826b56f4 Mon Sep 17 00:00:00 2001
From: Ottermandias <nickroederspam+git1@gmail.com>
Date: Mon, 30 Jan 2023 22:22:39 +0100
Subject: [PATCH] Maybe improve error handling when unable to create mipmaps.

---
 Penumbra/Import/Textures/CombinedTexture.cs | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/Penumbra/Import/Textures/CombinedTexture.cs b/Penumbra/Import/Textures/CombinedTexture.cs
index c3065186..3a8762d4 100644
--- a/Penumbra/Import/Textures/CombinedTexture.cs
+++ b/Penumbra/Import/Textures/CombinedTexture.cs
@@ -130,9 +130,21 @@ public partial class CombinedTexture : IDisposable
     }
 
     private static ScratchImage AddMipMaps( ScratchImage input, bool mipMaps )
-        => mipMaps
-            ? input.GenerateMipMaps( Math.Min( 13, 1 + BitOperations.Log2( ( uint )Math.Max( input.Meta.Width, input.Meta.Height ) ) ), FilterFlags.SeparateAlpha )
-            : input;
+    {
+        if( !mipMaps )
+        {
+            return input;
+        }
+
+        var numMips = Math.Min( 13, 1 + BitOperations.Log2( ( uint )Math.Max( input.Meta.Width, input.Meta.Height ) ) );
+        var ec      = input.GenerateMipMaps( out var ret, numMips, FilterFlags.SeparateAlpha );
+        if (ec != ErrorCode.Ok)
+        {
+            throw new Exception( $"Could not create the requested {numMips} mip maps, maybe retry with the top-right checkbox unchecked:\n{ec}" );
+        }
+
+        return ret;
+    }
 
     private static ScratchImage CreateUncompressed( ScratchImage input, bool mipMaps )
     {