From 3ea1d87a42bfc6aba367b1285e7bb6bdf49f8364 Mon Sep 17 00:00:00 2001
From: Andrey Kleshchev <andreykproductengine@lindenlab.com>
Date: Tue, 2 Sep 2025 23:26:16 +0300
Subject: #4587 Shaders sometimes do not match the shader settings

Ensure versions get matched reliably
---
 indra/newview/llviewershadermgr.cpp | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

(limited to 'indra/newview')

diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index a0a9906724..a9c58d5a06 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -545,7 +545,11 @@ void LLViewerShaderMgr::setShaders()
             gSavedSettings.setString("RenderShaderCacheVersion", current_cache_version.asString());
         }
 
-        initShaderCache(shader_cache_enabled, old_cache_version, current_cache_version);
+        initShaderCache(
+            shader_cache_enabled,
+            old_cache_version,
+            current_cache_version,
+            LLAppViewer::instance()->isSecondInstance());
     }
 
     static LLCachedControl<U32> max_texture_index(gSavedSettings, "RenderMaxTextureIndex", 16);
@@ -703,7 +707,10 @@ void LLViewerShaderMgr::setShaders()
     loaded = loaded && loadShadersDeferred();
     llassert(loaded);
 
-    persistShaderCacheMetadata();
+    if (!LLAppViewer::instance()->isSecondInstance())
+    {
+        persistShaderCacheMetadata();
+    }
 
     if (gViewerWindow)
     {
-- 
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