From 5f84c37a4e95503f28540780c3257f8689cccef9 Mon Sep 17 00:00:00 2001
From: yum <yum.food.vr@gmail.com>
Date: Fri, 28 Mar 2025 19:35:57 -0700
Subject: add shader inliner

---
 Editor/shader_inliner_v2.cs | 192 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 192 insertions(+)
 create mode 100644 Editor/shader_inliner_v2.cs

(limited to 'Editor')

diff --git a/Editor/shader_inliner_v2.cs b/Editor/shader_inliner_v2.cs
new file mode 100644
index 0000000..7b66c6a
--- /dev/null
+++ b/Editor/shader_inliner_v2.cs
@@ -0,0 +1,192 @@
+// !! AI ARTIFACT !!
+// This code was originally generated by Claude 3.5 Sonnet.
+// I wanted to write this tooling like I want a fucking hole in the head so I
+// kindly asked Claude to write it for me. It's shitty and poorly designed, but
+// it works well enough for my purposes.
+// It has been slightly tweaked by me, and validated on *this* codebase. It is
+// provided with no warranty.
+using UnityEngine;
+using UnityEditor;
+using System.IO;
+using System.Text.RegularExpressions;
+using System.Collections.Generic;
+using System.Linq;
+
+public class ShaderInlinerV2 : EditorWindow
+{
+	private string inputShaderPath;
+	private string outputShaderPath;
+	private int maxOutputLines = 10000000; // 10 million lines limit
+	private int currentLineCount = 0;
+
+	[MenuItem("Tools/yum_food/Shader Inliner (v2)")]
+	public static void ShowWindow()
+	{
+		GetWindow<ShaderInlinerV2>("Shader Inliner");
+	}
+
+	private void OnGUI()
+	{
+		GUILayout.Label("Shader Inliner", EditorStyles.boldLabel);
+
+		inputShaderPath = EditorGUILayout.TextField("Input Shader Path", inputShaderPath);
+		if (GUILayout.Button("Select Input Shader"))
+		{
+			inputShaderPath = EditorUtility.OpenFilePanel("Select Shader", "", "shader");
+		}
+
+		maxOutputLines = EditorGUILayout.IntField("Max Output Lines", maxOutputLines);
+
+		if (GUILayout.Button("Inline Shader"))
+		{
+			if (string.IsNullOrEmpty(inputShaderPath))
+			{
+				EditorUtility.DisplayDialog("Error", "Please select an input shader.", "OK");
+				return;
+			}
+
+			InlineShader();
+		}
+	}
+
+	private void InlineShader()
+	{
+		currentLineCount = 0;
+		string shaderContent = File.ReadAllText(inputShaderPath);
+		string inlinedShader = ProcessShader(shaderContent, Path.GetDirectoryName(inputShaderPath));
+
+		string fileName = Path.GetFileNameWithoutExtension(inputShaderPath);
+		outputShaderPath = Path.Combine(Path.GetDirectoryName(inputShaderPath), $"{fileName}_inlined.shader");
+		File.WriteAllText(outputShaderPath, inlinedShader);
+
+		AssetDatabase.Refresh();
+		EditorUtility.DisplayDialog("Success", 
+			$"Inlined shader saved to:\n{outputShaderPath}\nTotal lines: {currentLineCount}", "OK");
+	}
+
+	private string ProcessShader(string content, string basePath)
+	{
+		// Update shader name
+		content = Regex.Replace(content, @"Shader\s+""(.+?)""", match =>
+				{
+				string shaderName = match.Groups[1].Value;
+				return $"Shader \"{shaderName}_inlined\"";
+				});
+
+		// Count initial lines
+		currentLineCount += content.Split('\n').Length;
+		if (currentLineCount > maxOutputLines)
+		{
+			Debug.LogError($"Maximum line count exceeded: {currentLineCount}");
+			return content;
+		}
+
+		// Process all includes, regardless of whether they're in CGPROGRAM blocks
+		content = ProcessIncludes(content, basePath);
+
+		// Check for mismatched preprocessor macros in the entire shader
+		CheckMismatchedMacros(content);
+
+		return content;
+	}
+
+	private string ProcessIncludes(string content, string basePath)
+	{
+		string pattern = @"#include\s+""(.+?)""";
+		return Regex.Replace(content, pattern, match =>
+				{
+				string includePath = match.Groups[1].Value;
+				string fullPath = Path.Combine(basePath, includePath);
+
+				if (File.Exists(fullPath))
+				{
+				string includeContent = File.ReadAllText(fullPath);
+				
+				// Count the lines in the included file
+				int includeLines = includeContent.Split('\n').Length;
+				currentLineCount += includeLines;
+				
+				// Check if we've exceeded the line limit
+				if (currentLineCount > maxOutputLines)
+				{
+				Debug.LogError($"Maximum line count exceeded ({currentLineCount} lines) while including: {includePath}");
+				return $"// ERROR: Maximum line count exceeded while including: {includePath}";
+				}
+				
+				// Process includes recursively
+				return ProcessIncludes(includeContent, Path.GetDirectoryName(fullPath));
+				}
+				else
+				{
+				Debug.LogWarning($"Include file not found: {fullPath}");
+				return match.Value;
+				}
+				});
+	}
+
+	private void CheckMismatchedMacros(string content)
+	{
+		var stack = new Stack<string>();
+		var lines = content.Split('\n');
+		var macroPattern = @"^\s*#(if|ifdef|ifndef|elif|else|endif|if\s+defined)";
+
+		for (int i = 0; i < lines.Length; i++)
+		{
+			var line = lines[i].Trim();
+			var match = Regex.Match(line, macroPattern);
+
+			if (match.Success)
+			{
+				var directive = match.Groups[1].Value;
+
+				switch (directive)
+				{
+					case "if":
+					case "ifdef":
+					case "ifndef":
+					case "if defined":
+						stack.Push(directive);
+						break;
+					case "elif":
+						if (stack.Count == 0 || (stack.Peek() != "if" && stack.Peek() != "elif"))
+						{
+							Debug.LogError($"Mismatched #elif at line {i + 1}");
+						}
+						else
+						{
+							stack.Pop();
+							stack.Push("elif");
+						}
+						break;
+					case "else":
+						if (stack.Count == 0 || (stack.Peek() != "if" && stack.Peek() != "elif"))
+						{
+							Debug.LogError($"Mismatched #else at line {i + 1}");
+						}
+						else
+						{
+							stack.Pop();
+							stack.Push("else");
+						}
+						break;
+					case "endif":
+						if (stack.Count == 0)
+						{
+							Debug.LogError($"Mismatched #endif at line {i + 1}");
+						}
+						else
+						{
+							stack.Pop();
+						}
+						break;
+				}
+			}
+		}
+
+		if (stack.Count > 0)
+		{
+			Debug.LogError($"Unclosed preprocessor directives: {string.Join(", ", stack)}");
+		}
+	}
+}
+
-- 
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