From e23b3972a00370aff25d582ce33dc0db6d795213 Mon Sep 17 00:00:00 2001
From: Dave Parks <davep@lindenlab.com>
Date: Wed, 22 Mar 2023 18:25:47 -0500
Subject: DRTVWR-559 Fix for bad hashing of materials breaking render batches
 and who knows what else.

---
 indra/llprimitive/llgltfmaterial.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'indra/llprimitive/llgltfmaterial.cpp')

diff --git a/indra/llprimitive/llgltfmaterial.cpp b/indra/llprimitive/llgltfmaterial.cpp
index 62b693919c..f3aa5b0648 100644
--- a/indra/llprimitive/llgltfmaterial.cpp
+++ b/indra/llprimitive/llgltfmaterial.cpp
@@ -692,3 +692,13 @@ void LLGLTFMaterial::applyOverride(const LLGLTFMaterial& override_mat)
         }
     }
 }
+
+LLUUID LLGLTFMaterial::getHash() const
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
+    // HACK - hash the bytes of this object but don't include the ref count
+    LLUUID hash;
+    HBXXH128::digest(hash, (unsigned char*)this + sizeof(LLRefCount), sizeof(*this) - sizeof(LLRefCount));
+    return hash;
+}
+
-- 
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