From 0028b4f278fe05694113a481a20a63b0855b89fb Mon Sep 17 00:00:00 2001
From: Lubos Lenco <lubos.lenco@gmail.com>
Date: Mon, 21 Nov 2016 22:37:20 +0100
Subject: [PATCH] Legacy GL_ARB_shader_texture_lod support.

---
 spirv_glsl.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/spirv_glsl.cpp b/spirv_glsl.cpp
index 02c41b31..56b9ed62 100644
--- a/spirv_glsl.cpp
+++ b/spirv_glsl.cpp
@@ -2128,8 +2128,13 @@ string CompilerGLSL::legacy_tex_op(const std::string &op, const SPIRType &imgtyp
 		break;
 	}
 
-	if (is_legacy_es() && (op == "textureLod" || op == "textureProjLod"))
-		require_extension("GL_EXT_shader_texture_lod");
+	if (op == "textureLod" || op == "textureProjLod") 
+	{
+		if (is_legacy_es())
+			require_extension("GL_EXT_shader_texture_lod");
+		else if (is_legacy())
+			require_extension("GL_ARB_shader_texture_lod");
+	}
 
 	if (op == "texture")
 		return join("texture", type);