From 7de9e1f0974478b0941e98ce517c251f4b91a4a9 Mon Sep 17 00:00:00 2001
From: usernameak <delta.cxx@gmail.com+>
Date: Thu, 5 Jul 2018 17:25:55 +0300
Subject: [PATCH] Added ability to set defines in custom HW shaders

---
 src/r_data/gldefs.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/r_data/gldefs.cpp b/src/r_data/gldefs.cpp
index d46dc450e..b74b1de25 100644
--- a/src/r_data/gldefs.cpp
+++ b/src/r_data/gldefs.cpp
@@ -1442,6 +1442,18 @@ class GLDefsParser
 						sc.ScriptError("Error: out of texture units in texture '%s'", tex? tex->Name.GetChars() : "(null)");
 					}
 				}
+				else if(sc.Compare("define"))
+				{
+					sc.MustGetString();
+					FString defineName = sc.String;
+					FString defineValue = "";
+					if(sc.CheckToken('='))
+					{
+						sc.MustGetString();
+						defineValue = sc.String;
+					}
+					texnameDefs.AppendFormat("#define %s %s\n", defineName.GetChars(), defineValue.GetChars());
+				}
 			}
 			if (!tex)
 			{