From e61b6570b15e5d7843712ea65e11c3df42bf4f81 Mon Sep 17 00:00:00 2001
From: Dave Parks <davep@lindenlab.com>
Date: Wed, 14 Sep 2022 18:53:16 -0500
Subject: SL-17701 Fix for crash on AMD WHQL drivers.

---
 indra/llrender/llglslshader.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

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

diff --git a/indra/llrender/llglslshader.cpp b/indra/llrender/llglslshader.cpp
index bc349c2015..7cc5d33c49 100644
--- a/indra/llrender/llglslshader.cpp
+++ b/indra/llrender/llglslshader.cpp
@@ -977,8 +977,11 @@ BOOL LLGLSLShader::mapUniforms(const vector<LLStaticHashedString> * uniforms)
         static const GLuint BLOCKBINDING = 1; //picked by us
         //Get the index, similar to a uniform location
         GLuint UBOBlockIndex = glGetUniformBlockIndex(mProgramObject, "ReflectionProbes");
-        //Set this index to a binding index
-        glUniformBlockBinding(mProgramObject, UBOBlockIndex, BLOCKBINDING);
+        if (UBOBlockIndex != GL_INVALID_INDEX)
+        {
+            //Set this index to a binding index
+            glUniformBlockBinding(mProgramObject, UBOBlockIndex, BLOCKBINDING);
+        }
     }
 	unbind();
 
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