From 4b67df0db466d32d8c7ec548b70ea35e1e150b66 Mon Sep 17 00:00:00 2001
From: somewhatlurker <52014015+somewhatlurker@users.noreply.github.com>
Date: Mon, 7 Oct 2019 19:49:38 +1100
Subject: [PATCH] ShaderPatch: add `<fname>` replacement tag (filename), and
 Nametags patches using it

---
 source-code/data/plugins/ShaderPatch.ini      | 22 ++++++++++++++++++-
 .../plugins/ShaderPatch/src/dllmain.cpp       |  1 +
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/source-code/data/plugins/ShaderPatch.ini b/source-code/data/plugins/ShaderPatch.ini
index 4cf764a..2a22ba9 100644
--- a/source-code/data/plugins/ShaderPatch.ini
+++ b/source-code/data/plugins/ShaderPatch.ini
@@ -31,6 +31,14 @@ Toon_Lines_Val2=0.75
 # Thickness Offset(?)
 Toon_Lines_Val3=0.75
 
+# Debug patches:
+# Nametags
+# Adds comments with the shader file name to the shader text. Useful for debugging issues.
+# `nametags_val1` and `nametags_val2` are a dirty hack to hide this in launcher (options ending in _val. must belong to a parent to be displayed)
+# `nametags_val2` is a bit faster, but the tags are placed at the end of the file and you may not like this
+Nametags_Val1=0
+Nametags_Val2=0
+
 [Patches]
 # Compatibility patches:
 # Star Story (and etc.) stage corruption (Maxwell+)
@@ -46,4 +54,16 @@ cloth_npr1\.fp=arch:TU||cfg:compat||from:SSG _tmp0.yw, ybr.xxzz;||to:TEMP _tmpFo
 .*eye.*=cfg:toon_eyes||from:ADD o_color_f0.w, diff.x, diff.y;||to:
 .*hair_npr1.*=cfg:toon_hair||from:MUL spec.x, tmp.x, 0.7;||to:MUL spec.x, tmp.x, 0.7; MUL diff, diff, <val1>;
 .*tone_map_npr1.*=cfg:toon_lines||from:MUL density.y, density.y, 0.25;||to:MUL density.y, density.y, <val1>;
-.*tone_map_npr1.*=cfg:toon_lines||from:MAD density.w, density.x, 0.7, 0.25;||to:MAD density.w, density.x, <val2>, <val3>;
\ No newline at end of file
+.*tone_map_npr1.*=cfg:toon_lines||from:MAD density.w, density.x, 0.7, 0.25;||to:MAD density.w, density.x, <val2>, <val3>;
+
+# Debug patches:
+# Nametags
+# Adds comments with the shader file name to the shader text. Useful for debugging issues
+# `nametags_val1` and `nametags_val2` are a dirty hack to hide this in launcher (options ending in _val. must belong to a parent to be displayed)
+# `nametags_val2` is a bit faster, but the tags are placed at the end of the file and you may not like this
+# Notes:
+# * `(\r?\n)` is used to capture the line ending type used and ensure we're at the start of a line
+# * `[^!]` ensures the comment is inserted after all start program lines (not sure if this even matters)
+# * `[\s\S]` matches all characters *including* new lines
+.*=cfg:nametags_val1||from:(\r?\n)([^!][\s\S]*)||to:$1#<fname>$1$2
+.*=cfg:nametags_val2||from:([\s\S]*?(\r?\n)[\s\S]*)||to:$1$2#<fname>
\ No newline at end of file
diff --git a/source-code/source/plugins/ShaderPatch/src/dllmain.cpp b/source-code/source/plugins/ShaderPatch/src/dllmain.cpp
index 2550d3e..a86d1c8 100644
--- a/source-code/source/plugins/ShaderPatch/src/dllmain.cpp
+++ b/source-code/source/plugins/ShaderPatch/src/dllmain.cpp
@@ -238,6 +238,7 @@ void hookedLoadFromFarcThunk(FArchivedFile** ppFile)
 				modifiedStr = std::string(file.data, file.dataSize);
 
 			modifiedStr = std::regex_replace(modifiedStr, patch.dataRegex, patch.dataReplace);
+			modifiedStr = StringReplace(modifiedStr, "<fname>", file.fileName.GetCharBuf());
 
 			if (patch.cfg.length() > 0) // patch has a config setting
 			{