Lua bytecode builder, cdrom fixes

Editor/Core/SceneMemoryReport.cs

@@ -43,9 +43,9 @@ namespace SplashEdit.EditorCode
         public const long SPU_RESERVED      = 0x1010;
         public const long USABLE_SPU        = TOTAL_SPU - SPU_RESERVED;
 
-        // Fixed runtime overhead from C++ (renderer.hh constants)
+        // Fixed runtime overhead from C++ (renderer.hh constants, now configurable)
-        public const long BUMP_ALLOC_TOTAL  = 2L * 8096 * 24;   // ~380KB
+        public static long BUMP_ALLOC_TOTAL  => 2L * SplashSettings.BumpSize;
-        public const long OT_TOTAL          = 2L * 16384 * 4;   // ~128KB
+        public static long OT_TOTAL          => 2L * SplashSettings.OtSize * 4;
         public const long VIS_REFS          = 4096 * 4;          // 16KB
         public const long STACK_ESTIMATE    = 32 * 1024;         // 32KB
         public const long LUA_OVERHEAD      = 16 * 1024;         // 16KB approximate
@@ -53,6 +53,11 @@ namespace SplashEdit.EditorCode
 
         public long FixedOverhead => BUMP_ALLOC_TOTAL + OT_TOTAL + VIS_REFS + STACK_ESTIMATE + LUA_OVERHEAD;
 
+        // Heap estimate and warnings
+        public long EstimatedHeapFree => USABLE_RAM - TotalRamUsage;
+        public bool IsHeapWarning  => EstimatedHeapFree < 128 * 1024;   // < 128KB free
+        public bool IsHeapCritical => EstimatedHeapFree < 64 * 1024;    // < 64KB free
+
         /// <summary>RAM used by scene data (live portion of splashpack).</summary>
         public long SceneRamUsage => splashpackLiveSize > 0 ? splashpackLiveSize : splashpackFileSize;
 

Editor/Core/SplashBuildPaths.cs

@@ -166,6 +166,45 @@ namespace SplashEdit.EditorCode
             EnsureGitIgnore();
         }
 
+        // ───── Lua bytecode compilation paths ─────
+
+        /// <summary>
+        /// Directory for Lua source files extracted during export.
+        /// </summary>
+        public static string LuaSrcDir =>
+            Path.Combine(BuildOutputDir, "lua_src");
+
+        /// <summary>
+        /// Directory for compiled Lua bytecode files.
+        /// </summary>
+        public static string LuaCompiledDir =>
+            Path.Combine(BuildOutputDir, "lua_compiled");
+
+        /// <summary>
+        /// Manifest file listing input/output pairs for the PS1 Lua compiler.
+        /// </summary>
+        public static string LuaManifestPath =>
+            Path.Combine(LuaSrcDir, "manifest.txt");
+
+        /// <summary>
+        /// Sentinel file written by luac_psx when compilation is complete.
+        /// Contains "OK" on success or "ERROR" on failure.
+        /// </summary>
+        public static string LuaDoneSentinel =>
+            Path.Combine(LuaSrcDir, "__done__");
+
+        /// <summary>
+        /// Path to the luac_psx PS1 compiler executable (built from tools/luac_psx/).
+        /// </summary>
+        public static string LuacPsxExePath =>
+            Path.Combine(NativeSourceDir, "tools", "luac_psx", "luac_psx.ps-exe");
+
+        /// <summary>
+        /// Path to the luac_psx tools directory (for building the compiler).
+        /// </summary>
+        public static string LuacPsxDir =>
+            Path.Combine(NativeSourceDir, "tools", "luac_psx");
+
         /// <summary>
         /// Checks if PCSX-Redux is installed in the tools directory.
         /// </summary>

Editor/Core/SplashControlPanel.cs

@@ -37,6 +37,7 @@ namespace SplashEdit.EditorCode
         // ───── Build State ─────
         private static bool _isBuilding;
         private static bool _isRunning;
+        private static bool _luaBytecodeCompiled;
         private static Process _emulatorProcess;
 
         // ───── Scene List ─────
@@ -669,6 +670,13 @@ namespace SplashEdit.EditorCode
                 new GUIContent("FPS Overlay", "Show an FPS counter at top-left during gameplay"),
                 SplashSettings.FpsOverlay);
 
+            SplashSettings.OtSize = EditorGUILayout.IntField(
+                new GUIContent("OT Size", "Ordering table entries. Lower = less RAM, shallower Z-sorting."),
+                SplashSettings.OtSize);
+            SplashSettings.BumpSize = EditorGUILayout.IntField(
+                new GUIContent("Bump Alloc Size", "Per-frame primitive buffer (bytes). Lower = less RAM, fewer triangles per frame."),
+                SplashSettings.BumpSize);
+
             // Serial port (only for Real Hardware)
             if (SplashSettings.Target == BuildTarget.RealHardware)
             {
@@ -789,14 +797,18 @@ namespace SplashEdit.EditorCode
                 GUILayout.Label($"Scene: {report.sceneName}", PSXEditorStyles.SectionHeader);
                 EditorGUILayout.Space(4);
 
-                // Main RAM bar
+                // Main RAM bar — segmented: OT | Bump | Scene | Heap
-                DrawMemoryBar("Main RAM",
+                DrawSegmentedMemoryBar("Main RAM",
-                    report.TotalRamUsage, SceneMemoryReport.USABLE_RAM,
+                    SceneMemoryReport.USABLE_RAM,
                     report.RamPercent,
-                    new Color(0.3f, 0.6f, 1f),
+                    new (string label, long size, Color color)[] {
-                    $"Scene: {FormatBytes(report.SceneRamUsage)}  |  " +
+                        ("OT",    SceneMemoryReport.OT_TOTAL,          new Color(0.9f, 0.4f, 0.2f)),
-                    $"Fixed: {FormatBytes(report.FixedOverhead)}  |  " +
+                        ("Bump",  SceneMemoryReport.BUMP_ALLOC_TOTAL,  new Color(0.8f, 0.6f, 0.1f)),
-                    $"Free: {FormatBytes(report.RamFree)}");
+                        ("Scene", report.SceneRamUsage,                new Color(0.3f, 0.6f, 1.0f)),
+                        ("Other", SceneMemoryReport.VIS_REFS + SceneMemoryReport.STACK_ESTIMATE + SceneMemoryReport.LUA_OVERHEAD,
+                                                                       new Color(0.5f, 0.5f, 0.5f)),
+                    },
+                    report.EstimatedHeapFree);
 
                 EditorGUILayout.Space(4);
 
@@ -842,6 +854,15 @@ namespace SplashEdit.EditorCode
                     $"<b>{report.clutCount}</b> CLUTs",
                     PSXEditorStyles.RichLabel);
 
+                if (report.IsHeapCritical)
+                    EditorGUILayout.HelpBox(
+                        $"Estimated heap: {report.EstimatedHeapFree / 1024}KB free. Lua scripts may OOM!",
+                        MessageType.Error);
+                else if (report.IsHeapWarning)
+                    EditorGUILayout.HelpBox(
+                        $"Estimated heap: {report.EstimatedHeapFree / 1024}KB free. Consider reducing OT/Bump sizes.",
+                        MessageType.Warning);
+
                 EditorGUILayout.EndVertical();
                 EditorGUILayout.Space(4);
             }
@@ -889,6 +910,62 @@ namespace SplashEdit.EditorCode
             GUILayout.Label(details, EditorStyles.miniLabel);
         }
 
+        private void DrawSegmentedMemoryBar(
+            string label, long total, float percent,
+            (string label, long size, Color color)[] segments,
+            long heapFree)
+        {
+            long used = 0;
+            foreach (var seg in segments) used += seg.size;
+
+            // Label row
+            EditorGUILayout.BeginHorizontal();
+            GUILayout.Label(label, EditorStyles.boldLabel, GUILayout.Width(70));
+            GUILayout.Label($"{FormatBytes(used)} / {FormatBytes(total)}  ({percent:F1}%)  |  Heap free: {FormatBytes(heapFree)}",
+                EditorStyles.miniLabel);
+            GUILayout.FlexibleSpace();
+            EditorGUILayout.EndHorizontal();
+
+            // Bar
+            Rect barRect = GUILayoutUtility.GetRect(0, 16, GUILayout.ExpandWidth(true));
+            EditorGUI.DrawRect(barRect, new Color(0.15f, 0.15f, 0.17f));
+
+            // Draw each segment
+            float x = barRect.x;
+            foreach (var seg in segments)
+            {
+                float w = barRect.width * Mathf.Clamp01((float)seg.size / total);
+                if (w > 0)
+                    EditorGUI.DrawRect(new Rect(x, barRect.y, w, barRect.height), seg.color);
+                x += w;
+            }
+
+            // Border
+            DrawRectOutline(barRect, new Color(0.3f, 0.3f, 0.35f));
+
+            // Percent overlay
+            var style = new GUIStyle(EditorStyles.miniLabel)
+            {
+                alignment = TextAnchor.MiddleCenter,
+                normal = { textColor = Color.white }
+            };
+            GUI.Label(barRect, $"{percent:F1}%", style);
+
+            // Legend row
+            EditorGUILayout.BeginHorizontal();
+            foreach (var seg in segments)
+            {
+                // Color swatch + label
+                Rect swatchRect = GUILayoutUtility.GetRect(10, 10, GUILayout.Width(10));
+                swatchRect.y += 2;
+                EditorGUI.DrawRect(swatchRect, seg.color);
+                GUILayout.Label($"{seg.label}: {FormatBytes(seg.size)}", EditorStyles.miniLabel);
+                GUILayout.Space(6);
+            }
+            GUILayout.FlexibleSpace();
+            EditorGUILayout.EndHorizontal();
+        }
+
         private static void DrawRectOutline(Rect rect, Color color)
         {
             EditorGUI.DrawRect(new Rect(rect.x, rect.y, rect.width, 1), color);
@@ -930,6 +1007,7 @@ namespace SplashEdit.EditorCode
             }
 
             _isBuilding = true;
+            _luaBytecodeCompiled = false;
 
             var console = EditorWindow.GetWindow<PSXConsoleWindow>();
             console.titleContent = new GUIContent("PSX Console", EditorGUIUtility.IconContent("d_UnityEditor.ConsoleWindow").image);
@@ -946,7 +1024,32 @@ namespace SplashEdit.EditorCode
                 }
                 Log("Toolchain OK.", LogType.Log);
 
+                // Collect Lua files from all scenes and compile to bytecode
+                Log("Collecting Lua scripts...", LogType.Log);
+                EditorUtility.DisplayProgressBar("SplashEdit", "Collecting Lua scripts...", 0.2f);
+                var luaFiles = CollectLuaSources();
+                if (luaFiles != null && luaFiles.Count > 0)
+                {
+                    Log($"Found {luaFiles.Count} Lua script(s). Compiling...", LogType.Log);
+                    EditorUtility.DisplayProgressBar("SplashEdit", "Compiling Lua scripts...", 0.3f);
+                    var bytecodeMap = await CompileLuaAsync(luaFiles);
+                    if (bytecodeMap == null)
+                    {
+                        Log("Lua compilation failed.", LogType.Error);
+                        return;
+                    }
+                    PSXSceneWriter.CompiledLuaBytecode = bytecodeMap;
+                    _luaBytecodeCompiled = true;
+                    Log($"Compiled {bytecodeMap.Count} Lua script(s) to bytecode.", LogType.Log);
+                }
+                else
+                {
+                    Log("No Lua scripts found.", LogType.Log);
+                    PSXSceneWriter.CompiledLuaBytecode = null;
+                }
+
                 Log("Exporting scenes...", LogType.Log);
+                EditorUtility.DisplayProgressBar("SplashEdit", "Exporting scenes...", 0.4f);
                 if (!ExportAllScenes())
                 {
                     Log("Export failed.", LogType.Error);
@@ -954,6 +1057,9 @@ namespace SplashEdit.EditorCode
                 }
                 Log($"Exported {_sceneList.Count} scene(s).", LogType.Log);
 
+                // Clear bytecode cache after export
+                PSXSceneWriter.CompiledLuaBytecode = null;
+
                 Log("Compiling native code...", LogType.Log);
                 EditorUtility.DisplayProgressBar("SplashEdit", "Compiling native code...", 0.6f);
                 if (!await CompileNativeAsync())
@@ -1222,6 +1328,345 @@ namespace SplashEdit.EditorCode
             Log("Wrote scene manifest.", LogType.Log);
         }
 
+        // ───── Lua bytecode compilation ─────
+
+        /// <summary>
+        /// Scan all scenes in the scene list and collect unique Lua source files.
+        /// Writes each source to PSXBuild/lua_src/ for compilation.
+        /// </summary>
+        private Dictionary<LuaFile, string> CollectLuaSources()
+        {
+            SplashBuildPaths.EnsureDirectories();
+            string luaSrcDir = SplashBuildPaths.LuaSrcDir;
+            if (Directory.Exists(luaSrcDir))
+                Directory.Delete(luaSrcDir, true);
+            Directory.CreateDirectory(luaSrcDir);
+
+            string currentScenePath = SceneManager.GetActiveScene().path;
+            var luaFileMap = new Dictionary<LuaFile, string>(); // LuaFile -> filename (no extension)
+
+            for (int i = 0; i < _sceneList.Count; i++)
+            {
+                var scene = _sceneList[i];
+                if (scene.asset == null) continue;
+
+                try
+                {
+                    EditorSceneManager.OpenScene(scene.path, OpenSceneMode.Single);
+                    // Collect from object exporters
+                    var objExporters = UnityEngine.Object.FindObjectsByType<PSXObjectExporter>(FindObjectsSortMode.None);
+                    foreach (var objExporter in objExporters)
+                    {
+                        if (objExporter.LuaFile != null && !luaFileMap.ContainsKey(objExporter.LuaFile))
+                        {
+                            string name = $"script_{luaFileMap.Count}";
+                            luaFileMap[objExporter.LuaFile] = name;
+                        }
+                    }
+
+                    // Collect scene-level Lua file
+                    var sceneExporter = UnityEngine.Object.FindFirstObjectByType<PSXSceneExporter>();
+                    if (sceneExporter != null && sceneExporter.SceneLuaFile != null &&
+                        !luaFileMap.ContainsKey(sceneExporter.SceneLuaFile))
+                    {
+                        string name = $"script_{luaFileMap.Count}";
+                        luaFileMap[sceneExporter.SceneLuaFile] = name;
+                    }
+
+                    // Collect from trigger boxes
+                    var triggerBoxes = UnityEngine.Object.FindObjectsByType<PSXTriggerBox>(FindObjectsSortMode.None);
+                    foreach (var tb in triggerBoxes)
+                    {
+                        if (tb.LuaFile != null && !luaFileMap.ContainsKey(tb.LuaFile))
+                        {
+                            string name = $"script_{luaFileMap.Count}";
+                            luaFileMap[tb.LuaFile] = name;
+                        }
+                    }
+                }
+                catch (Exception ex)
+                {
+                    Log($"Error scanning '{scene.name}' for Lua files: {ex.Message}", LogType.Warning);
+                }
+            }
+
+            // Write source files to disk
+            foreach (var kvp in luaFileMap)
+            {
+                string srcPath = Path.Combine(luaSrcDir, kvp.Value + ".lua");
+                File.WriteAllText(srcPath, kvp.Key.LuaScript, new System.Text.UTF8Encoding(false));
+            }
+
+            // Restore original scene
+            if (!string.IsNullOrEmpty(currentScenePath))
+                EditorSceneManager.OpenScene(currentScenePath, OpenSceneMode.Single);
+
+            return luaFileMap;
+        }
+
+        /// <summary>
+        /// Compile Lua source files to PS1 bytecode using luac_psx inside PCSX-Redux.
+        /// Returns a dictionary mapping LuaFile assets to their compiled bytecode,
+        /// or null on failure.
+        /// </summary>
+        private async Task<Dictionary<string, byte[]>> CompileLuaAsync(Dictionary<LuaFile, string> luaFileMap)
+        {
+            string luaSrcDir = SplashBuildPaths.LuaSrcDir;
+            string nativeDir = SplashBuildPaths.NativeSourceDir;
+
+            // Build luac_psx if needed
+            string luacDir = SplashBuildPaths.LuacPsxDir;
+            string luacExe = SplashBuildPaths.LuacPsxExePath;
+
+            if (!File.Exists(luacExe))
+            {
+                Log("Building Lua compiler (luac_psx)...", LogType.Log);
+                if (!await BuildLuacPsxAsync(luacDir))
+                {
+                    Log("Failed to build luac_psx.", LogType.Error);
+                    return null;
+                }
+            }
+
+            // Generate manifest.txt
+            string manifestPath = SplashBuildPaths.LuaManifestPath;
+            using (var sw = new StreamWriter(manifestPath, false, new System.Text.UTF8Encoding(false)))
+            {
+                foreach (var kvp in luaFileMap)
+                {
+                    sw.WriteLine(kvp.Value + ".lua");
+                    sw.WriteLine(kvp.Value + ".luac");
+                }
+            }
+
+            // Clean up previous sentinel
+            string sentinelPath = SplashBuildPaths.LuaDoneSentinel;
+            if (File.Exists(sentinelPath))
+                File.Delete(sentinelPath);
+
+            // Launch PCSX-Redux headless with luac_psx
+            string reduxBinary = SplashBuildPaths.PCSXReduxBinary;
+            if (!File.Exists(reduxBinary))
+            {
+                Log("PCSX-Redux not found. Install it via the Toolchain section.", LogType.Error);
+                return null;
+            }
+
+            string args = $"--no-ui --run --fastboot --pcdrv --stdout --pcdrvbase \"{luaSrcDir}\" --loadexe \"{luacExe}\"";
+            Log($"luac_psx: {luacExe}", LogType.Log);
+            Log($"pcdrvbase: {luaSrcDir}", LogType.Log);
+            Log($"manifest: {File.ReadAllText(manifestPath).Trim()}", LogType.Log);
+
+            var psi = new ProcessStartInfo
+            {
+                FileName = reduxBinary,
+                Arguments = args,
+                WorkingDirectory = luaSrcDir,
+                RedirectStandardOutput = true,
+                RedirectStandardError = true,
+                UseShellExecute = false,
+                CreateNoWindow = true
+            };
+
+            Process process = null;
+            try
+            {
+                process = new Process { StartInfo = psi, EnableRaisingEvents = true };
+                var stdoutBuf = new System.Text.StringBuilder();
+
+                var stderrBuf = new System.Text.StringBuilder();
+                process.OutputDataReceived += (s, e) =>
+                {
+                    if (e.Data != null)
+                    {
+                        stdoutBuf.AppendLine(e.Data);
+                    }
+                };
+                process.ErrorDataReceived += (s, e) =>
+                {
+                    if (e.Data != null)
+                    {
+                        stderrBuf.AppendLine(e.Data);
+                    }
+                };
+
+                process.Start();
+                process.BeginOutputReadLine();
+                process.BeginErrorReadLine();
+
+                // Poll for sentinel file (100ms interval, 30s timeout)
+                bool done = false;
+                int elapsed = 0;
+                const int timeoutMs = 30000;
+                const int pollMs = 100;
+
+                while (elapsed < timeoutMs)
+                {
+                    await Task.Delay(pollMs);
+                    elapsed += pollMs;
+
+                    if (File.Exists(sentinelPath))
+                    {
+                        done = true;
+                        break;
+                    }
+
+                    // Check if process died unexpectedly
+                    if (process.HasExited)
+                    {
+                        Log("PCSX-Redux exited unexpectedly during Lua compilation.", LogType.Error);
+                        break;
+                    }
+                }
+
+                // Kill emulator
+                if (!process.HasExited)
+                {
+                    try { process.Kill(); } catch { }
+                }
+
+                if (!done)
+                {
+                    Log("Lua compilation timed out (30s).", LogType.Error);
+                    return null;
+                }
+
+                // Check sentinel content
+                // Give a tiny delay for file to flush on Windows
+                await Task.Delay(200);
+                string sentinelContent = File.ReadAllText(sentinelPath).Trim();
+                if (string.IsNullOrEmpty(sentinelContent))
+                    sentinelContent = "(empty)";
+                if (sentinelContent != "OK")
+                {
+                    // Sentinel contains error details from luac_psx
+                    foreach (string errLine in sentinelContent.Split('\n'))
+                    {
+                        if (!string.IsNullOrWhiteSpace(errLine))
+                            Log(errLine.TrimEnd(), LogType.Error);
+                    }
+
+                    // Dump full stdout and stderr for diagnosis
+                    string fullStdout = stdoutBuf.ToString().Trim();
+                    string fullStderr = stderrBuf.ToString().Trim();
+
+                    if (!string.IsNullOrEmpty(fullStdout))
+                    {
+                        Log("--- PCSX-Redux stdout ---", LogType.Log);
+                        foreach (string line in fullStdout.Split('\n'))
+                        {
+                            if (!string.IsNullOrWhiteSpace(line))
+                                LogToPanel(line.TrimEnd(), LogType.Log);
+                        }
+                    }
+                    else
+                    {
+                        Log("No stdout captured from PCSX-Redux.", LogType.Warning);
+                    }
+
+                    if (!string.IsNullOrEmpty(fullStderr))
+                    {
+                        Log("--- PCSX-Redux stderr ---", LogType.Log);
+                        foreach (string line in fullStderr.Split('\n'))
+                        {
+                            if (!string.IsNullOrWhiteSpace(line))
+                                LogToPanel(line.TrimEnd(), LogType.Log);
+                        }
+                    }
+                    return null;
+                }
+
+                // Read compiled bytecode files, keyed by source text
+                var result = new Dictionary<string, byte[]>();
+                foreach (var kvp in luaFileMap)
+                {
+                    string luacPath = Path.Combine(luaSrcDir, kvp.Value + ".luac");
+                    if (!File.Exists(luacPath))
+                    {
+                        Log($"Missing compiled bytecode: {kvp.Value}.luac", LogType.Error);
+                        return null;
+                    }
+                    result[kvp.Key.LuaScript] = File.ReadAllBytes(luacPath);
+                }
+
+                return result;
+            }
+            catch (Exception ex)
+            {
+                Log($"Lua compilation error: {ex.Message}", LogType.Error);
+                return null;
+            }
+            finally
+            {
+                if (process != null)
+                {
+                    if (!process.HasExited)
+                        try { process.Kill(); } catch { }
+                    process.Dispose();
+                }
+            }
+        }
+
+        /// <summary>
+        /// Build the luac_psx PS1 compiler executable.
+        /// </summary>
+        private async Task<bool> BuildLuacPsxAsync(string luacDir)
+        {
+            int jobCount = Math.Max(1, SystemInfo.processorCount - 1);
+            string makeCmd = $"make -j{jobCount}";
+
+            var psi = new ProcessStartInfo
+            {
+                FileName = Application.platform == RuntimePlatform.WindowsEditor ? "cmd.exe" : "/bin/bash",
+                Arguments = Application.platform == RuntimePlatform.WindowsEditor
+                    ? $"/c \"cd /d \"{luacDir}\" && {makeCmd}\""
+                    : $"-c \"cd \\\"{luacDir}\\\" && {makeCmd}\"",
+                WorkingDirectory = luacDir,
+                RedirectStandardOutput = true,
+                RedirectStandardError = true,
+                UseShellExecute = false,
+                CreateNoWindow = true
+            };
+
+            try
+            {
+                var process = new Process { StartInfo = psi, EnableRaisingEvents = true };
+                var stderrBuf = new System.Text.StringBuilder();
+                process.OutputDataReceived += (s, e) => { };
+                process.ErrorDataReceived += (s, e) =>
+                {
+                    if (e.Data != null) stderrBuf.AppendLine(e.Data);
+                };
+
+                var tcs = new TaskCompletionSource<int>();
+                process.Exited += (s, e) => tcs.TrySetResult(process.ExitCode);
+
+                process.Start();
+                process.BeginOutputReadLine();
+                process.BeginErrorReadLine();
+
+                int exitCode = await tcs.Task;
+                process.Dispose();
+
+                if (exitCode != 0)
+                {
+                    foreach (string line in stderrBuf.ToString().Split('\n'))
+                    {
+                        if (!string.IsNullOrWhiteSpace(line))
+                            LogToPanel(line.Trim(), LogType.Error);
+                    }
+                    return false;
+                }
+
+                return true;
+            }
+            catch (Exception ex)
+            {
+                Log($"Failed to build luac_psx: {ex.Message}", LogType.Error);
+                return false;
+            }
+        }
+
         // ───── Step 3: Compile ─────
 
         private async void CompileOnly()
@@ -1266,9 +1711,20 @@ namespace SplashEdit.EditorCode
             if (SplashSettings.FpsOverlay)
                 buildArg += " FPSOVERLAY=1";
 
+            buildArg += $" OT_SIZE={SplashSettings.OtSize} BUMP_SIZE={SplashSettings.BumpSize}";
+
+            // Use noparser Lua library when bytecode was pre-compiled
+            string noparserPrefix = "";
+            if (_luaBytecodeCompiled)
+            {
+                buildArg += " NOPARSER=1";
+                // Build liblua-noparser.a first
+                noparserPrefix = "make -C third_party/nugget/third_party/psxlua psx-noparser && ";
+            }
+
             int jobCount = Math.Max(1, SystemInfo.processorCount - 1);
             string cleanPrefix = SplashSettings.CleanBuild ? "make clean && " : "";
-            string makeCmd = $"{cleanPrefix}make all -j{jobCount} {buildArg}".Trim();
+            string makeCmd = $"{cleanPrefix}{noparserPrefix}make all -j{jobCount} {buildArg}".Trim();
             Log($"Running: {makeCmd}", LogType.Log);
 
             var psi = new ProcessStartInfo

Editor/Core/SplashSettings.cs

@@ -149,6 +149,19 @@ namespace SplashEdit.EditorCode
             set => EditorPrefs.SetBool(Prefix + "FpsOverlay", value);
         }
 
+        // --- Renderer sizes ---
+        public static int OtSize
+        {
+            get => EditorPrefs.GetInt(Prefix + "OtSize", 2048 * 4);
+            set => EditorPrefs.SetInt(Prefix + "OtSize", value);
+        }
+
+        public static int BumpSize
+        {
+            get => EditorPrefs.GetInt(Prefix + "BumpSize", 8096 * 16);
+            set => EditorPrefs.SetInt(Prefix + "BumpSize", value);
+        }
+
         // --- Export settings ---
         public static float DefaultGTEScaling
         {
@@ -188,7 +201,8 @@ namespace SplashEdit.EditorCode
                 "PCSXReduxPath", "PCSXReduxPCdrvBase", "SerialPort", "SerialBaudRate",
                 "ResWidth", "ResHeight", "DualBuffering", "VerticalLayout",
                 "GTEScaling", "AutoValidate",
-                "LicenseFilePath", "ISOVolumeLabel"
+                "LicenseFilePath", "ISOVolumeLabel",
+                "OtSize", "BumpSize"
             };
 
             foreach (string key in keys)

Runtime/PSXSceneWriter.cs

@@ -12,6 +12,13 @@ namespace SplashEdit.RuntimeCode
     /// </summary>
     public static class PSXSceneWriter
     {
+        /// <summary>
+        /// Pre-compiled Lua bytecode, keyed by Lua source text.
+        /// When populated, Write() packs bytecode instead of source text.
+        /// Set by the build pipeline after running luac_psx, cleared after export.
+        /// </summary>
+        public static Dictionary<string, byte[]> CompiledLuaBytecode { get; set; }
+
         /// <summary>
         /// All scene data needed to produce a .bin file.
         /// Populated by PSXSceneExporter before calling <see cref="Write"/>.
@@ -239,6 +246,11 @@ namespace SplashEdit.RuntimeCode
                 {
                     luaOffset.PlaceholderPositions.Add(writer.BaseStream.Position);
                     writer.Write((int)0); // placeholder
+
+                    // Use compiled bytecode length if available, otherwise source length
+                    if (CompiledLuaBytecode != null && CompiledLuaBytecode.TryGetValue(luaFile.LuaScript, out byte[] bytecode))
+                        writer.Write((uint)bytecode.Length);
+                    else
                         writer.Write((uint)Encoding.UTF8.GetByteCount(luaFile.LuaScript));
                 }
 
@@ -429,12 +441,26 @@ namespace SplashEdit.RuntimeCode
                 // Data sections
                 // ══════════════════════════════════════════════════════
 
-                // Lua data
+                // Lua data (bytecode if compiled, source text otherwise)
+                int luaIdx = 0;
+                log?.Invoke($"CompiledLuaBytecode: {(CompiledLuaBytecode != null ? CompiledLuaBytecode.Count + " entries" : "null")}", LogType.Log);
                 foreach (LuaFile luaFile in luaFiles)
                 {
                     AlignToFourBytes(writer);
                     luaOffset.DataOffsets.Add(writer.BaseStream.Position);
-                    writer.Write(Encoding.UTF8.GetBytes(luaFile.LuaScript));
+
+                    if (CompiledLuaBytecode != null && CompiledLuaBytecode.TryGetValue(luaFile.LuaScript, out byte[] bytecode))
+                    {
+                        log?.Invoke($"  Lua [{luaIdx}]: using bytecode ({bytecode.Length} bytes)", LogType.Log);
+                        writer.Write(bytecode);
+                    }
+                    else
+                    {
+                        byte[] srcBytes = Encoding.UTF8.GetBytes(luaFile.LuaScript);
+                        log?.Invoke($"  Lua [{luaIdx}]: FALLBACK to source ({srcBytes.Length} bytes, script hash={luaFile.LuaScript.GetHashCode()})", LogType.Warning);
+                        writer.Write(srcBytes);
+                    }
+                    luaIdx++;
                 }
 
                 // Mesh data