From 62033f2f80e3dce778538c000b95f846b0bb9e33 Mon Sep 17 00:00:00 2001
From: Andrey Kleshchev <117672381+akleshchev@users.noreply.github.com>
Date: Fri, 28 Aug 2026 00:48:23 +0300
Subject: #6211 Fix a potential problem with shader fallbacks

When loading environment (sun) shader, user got silent failures on retry
---
 indra/llrender/llglslshader.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'indra/llrender/llglslshader.cpp')

diff --git a/indra/llrender/llglslshader.cpp b/indra/llrender/llglslshader.cpp
index a268ea07bb..910640b54c 100644
--- a/indra/llrender/llglslshader.cpp
+++ b/indra/llrender/llglslshader.cpp
@@ -492,6 +492,10 @@ bool LLGLSLShader::createShader()
         {
             LL_SHADER_LOADING_WARNS() << "Failed to link using shader level " << mShaderLevel << " trying again using shader level " << (mShaderLevel - 1) << LL_ENDL;
             mShaderLevel--;
+
+            // Drain error queue before trying again
+            log_glerror();
+
             return createShader();
         }
         else
-- 
cgit v1.3