From 54dbf20480c338f0d3e3a4e3206afc94f422fe57 Mon Sep 17 00:00:00 2001
From: Lurs <2795933+Lurs@users.noreply.github.com>
Date: Sun, 24 May 2026 21:36:38 +0200
Subject: [PATCH] Fix mipmapping of BC1 textures. Update aurora.

---
 extern/aurora                  | 2 +-
 src/dusk/tphd/HdAssetLayer.cpp | 8 +++++---
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/extern/aurora b/extern/aurora
index a2889a0b0e..5c5873e53d 160000
--- a/extern/aurora
+++ b/extern/aurora
@@ -1 +1 @@
-Subproject commit a2889a0b0eb6dcb0c48b4cbe0de9c8238cdb759a
+Subproject commit 5c5873e53ddec4cbfe5b992b472358fb5dab2631
diff --git a/src/dusk/tphd/HdAssetLayer.cpp b/src/dusk/tphd/HdAssetLayer.cpp
index ccb56f2dc6..be1d87969a 100644
--- a/src/dusk/tphd/HdAssetLayer.cpp
+++ b/src/dusk/tphd/HdAssetLayer.cpp
@@ -243,9 +243,11 @@ MipLevelDesc mipLevelDesc(const GtxSurface& s, u32 level, bool isBcn, u32 bpp) {
     const bool is1D = (d.tileMode == addrlib::TileMode::Tiled1DThin1 ||
                        d.tileMode == addrlib::TileMode::Tiled1DThick);
     const u32 alignment = is1D ? 8u : 32u;
-    u32 levelPitch = std::max(1u, s.pitch >> level);
-    levelPitch = ((levelPitch + alignment - 1) / alignment) * alignment;
-    d.pitch = levelPitch;
+
+    const u32 pixelsPerBlock = isBcn ? 4u : 1u;
+    const u32 widthInBlock  = (d.width + pixelsPerBlock - 1) / pixelsPerBlock;
+    u32 levelPitch = ((widthInBlock + alignment - 1) / alignment) * alignment;
+    d.pitch = std::max(1u, levelPitch);
     return d;
 }