From fa51a54042bb29d9f36b5de62275eb31a0734eb9 Mon Sep 17 00:00:00 2001
From: usernameak <delta.cxx@gmail.com+>
Date: Thu, 5 Jul 2018 15:01:16 +0300
Subject: [PATCH] Made ability to define custom material shaders for
 ProcessMaterial function

---
 src/gl/shaders/gl_shader.cpp |  3 ++-
 src/r_data/gldefs.cpp        | 10 +++++++++-
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/gl/shaders/gl_shader.cpp b/src/gl/shaders/gl_shader.cpp
index 8bff7ee2a..31e9bbc5d 100644
--- a/src/gl/shaders/gl_shader.cpp
+++ b/src/gl/shaders/gl_shader.cpp
@@ -496,6 +496,7 @@ static const FDefaultShader defaultshaders[]=
 };
 
 TArray<FString> usershaders;
+TArray<FString> usermaterials;
 
 struct FEffectShader
 {
@@ -647,7 +648,7 @@ void FShaderCollection::CompileShaders(EPassType passType)
 		FString name = ExtractFileBase(usershaders[i]);
 		FName sfn = name;
 
-		FShader *shc = Compile(sfn, usershaders[i], "shaders/glsl/material_normal.fp", "", true, passType);
+		FShader *shc = Compile(sfn, usershaders[i], usermaterials[i], "", true, passType);
 		mMaterialShaders.Push(shc);
 	}
 
diff --git a/src/r_data/gldefs.cpp b/src/r_data/gldefs.cpp
index 573868021..97619cd0f 100644
--- a/src/r_data/gldefs.cpp
+++ b/src/r_data/gldefs.cpp
@@ -51,6 +51,7 @@ void AddLightAssociation(const char *actor, const char *frame, const char *light
 void InitializeActorLights(TArray<FLightAssociation> &LightAssociations);
 
 extern TArray<FString> usershaders;
+extern TArray<FString> usermaterials;
 extern TDeletingArray<FLightDefaults *> LightDefaults;
 
 
@@ -1378,6 +1379,7 @@ class GLDefsParser
 			bool iwad = false;
 			int maplump = -1;
 			FString maplumpname;
+			FString materiallumpname = "shaders/glsl/material_normal.fp";
 			float speed = 1.f;
 
 			sc.MustGetString();
@@ -1393,6 +1395,11 @@ class GLDefsParser
 					sc.MustGetString();
 					maplumpname = sc.String;
 				}
+				else if (sc.Compare("material"))
+				{
+					sc.MustGetString();
+					materiallumpname = sc.String;
+				}
 				else if (sc.Compare("speed"))
 				{
 					sc.MustGetFloat();
@@ -1432,13 +1439,14 @@ class GLDefsParser
 				tex->shaderspeed = speed;
 				for (unsigned i = 0; i < usershaders.Size(); i++)
 				{
-					if (!usershaders[i].CompareNoCase(maplumpname))
+					if (!usershaders[i].CompareNoCase(maplumpname) && !usermaterials[i].CompareNoCase(materiallumpname))
 					{
 						tex->shaderindex = i + FIRST_USER_SHADER;
 						return;
 					}
 				}
 				tex->shaderindex = usershaders.Push(maplumpname) + FIRST_USER_SHADER;
+				usermaterials.Push(materiallumpname);
 			}
 		}
 	}