From d1e28ff2173ffe216fc2d72c8cb8d7782b2e09d1 Mon Sep 17 00:00:00 2001
From: NepDisk <nepdisk@noreply.codeberg.org>
Date: Thu, 26 Feb 2026 13:17:31 -0500
Subject: [PATCH] Don't do I_Error meme texture replacement Luas

This is an issue that mostly affects hardcode, Lua authors don't have to worry about this.
---
 src/lua_baselib.c | 2 +-
 src/r_textures.c  | 4 ++--
 src/r_textures.h  | 3 ++-
 3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/lua_baselib.c b/src/lua_baselib.c
index f0bfaa535..d38d5d41d 100644
--- a/src/lua_baselib.c
+++ b/src/lua_baselib.c
@@ -2605,7 +2605,7 @@ static int lib_rTextureNumForName(lua_State *L)
 {
 	const char *name = luaL_checkstring(L, 1);
 	//HUDSAFE
-	lua_pushinteger(L, R_TextureNumForName(name));
+	lua_pushinteger(L, R_TextureNumForNameEx(name, true));
 	return 1;
 }
 
diff --git a/src/r_textures.c b/src/r_textures.c
index 4283a49e6..75fbb5d30 100644
--- a/src/r_textures.c
+++ b/src/r_textures.c
@@ -2035,7 +2035,7 @@ INT32 R_CheckTextureNumForName(const char *name, UINT8 type)
 //
 // Calls R_CheckTextureNumForName. Returns REDWALL if not found.
 //
-INT32 R_TextureNumForName(const char *name)
+INT32 R_TextureNumForNameEx(const char *name, boolean lua)
 {
 	INT32 i = R_CheckTextureNumForName(name, TEXTURETYPE_TEXTURE);
 
@@ -2053,7 +2053,7 @@ INT32 R_TextureNumForName(const char *name)
 		if (redwall == -2)
 		{
 			redwall = R_CheckTextureNumForName(MISSING_TEXTURE, TEXTURETYPE_TEXTURE);
-			if (redwall <= 256)
+			if (redwall <= 256 && !lua)
 				// see P_SetBinaryFOFAlpha
 				I_Error(MISSING_TEXTURE " resolved to ID <= 256. Shit's fucked man");
 		}
diff --git a/src/r_textures.h b/src/r_textures.h
index 7ec605e37..f80f34f94 100644
--- a/src/r_textures.h
+++ b/src/r_textures.h
@@ -107,7 +107,8 @@ void R_CheckFlatLength(drawspandata_t* ds, size_t size);
 void R_UpdateTextureBrightmap(INT32 tx, INT32 bm);
 
 // Returns the texture number for the texture name.
-INT32 R_TextureNumForName(const char *name);
+INT32 R_TextureNumForNameEx(const char *name, boolean lua);
+#define R_TextureNumForName(name) R_TextureNumForNameEx(name, false)
 INT32 R_CheckTextureNumForName(const char *name, UINT8 type);
 
 extern INT32 numtextures;