From 8a1e2f98cbbc242d2721deaa92ed34c3f3fcf788 Mon Sep 17 00:00:00 2001
From: Cosmic Linden <cosmic@lindenlab.com>
Date: Wed, 24 Jan 2024 14:33:24 -0800
Subject: Fix vertex color indexing in material preview

---
 indra/newview/llgltfmaterialpreviewmgr.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/indra/newview/llgltfmaterialpreviewmgr.cpp b/indra/newview/llgltfmaterialpreviewmgr.cpp
index 394f600a92..09a2954710 100644
--- a/indra/newview/llgltfmaterialpreviewmgr.cpp
+++ b/indra/newview/llgltfmaterialpreviewmgr.cpp
@@ -337,7 +337,7 @@ void set_preview_sphere_material(PreviewSphere& preview_sphere, LLPointer<LLFetc
         info->mGLTFMaterial = material;
         LLVertexBuffer* buf = info->mVertexBuffer.get();
         LLStrider<LLColor4U> colors;
-        const S32 count = info->mEnd - info->mStart;
+        const S32 count = info->mEnd - info->mStart + 1;
         buf->getColorStrider(colors, info->mStart, count);
         for (S32 i = 0; i < count; ++i)
         {
-- 
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