From 665c70281b40626bb2532ff41d968788379e8a23 Mon Sep 17 00:00:00 2001
From: TLeaves <664570530@qq.com>
Date: Fri, 9 Aug 2024 10:08:30 +0800
Subject: [PATCH] [Fix] fix osgText frag texture2DLod extension error.

For SDF Text.
---
 src/osgText/shaders/osgText_Text_frag.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/osgText/shaders/osgText_Text_frag.cpp b/src/osgText/shaders/osgText_Text_frag.cpp
index 74af76369e3..94938741c85 100644
--- a/src/osgText/shaders/osgText_Text_frag.cpp
+++ b/src/osgText/shaders/osgText_Text_frag.cpp
@@ -38,6 +38,7 @@ char osgText_Text_frag[] = "$OSG_GLSL_VERSION\n"
                            "            #define TEXTURELOD texture2DLod\n"
                            "        #endif\n"
                            "    #else\n"
+                           "        #extension GL_ARB_shader_texture_lod : enable\n"
                            "        #define TEXTURELOD texture2DLod\n"
                            "    #endif\n"
                            "#endif\n"