1 files changed, 101 insertions, 0 deletions
diff --git a/src/Ryujinx.Graphics.OpenGL/Debugger.cs b/src/Ryujinx.Graphics.OpenGL/Debugger.cs
new file mode 100644
index 00000000..9f67cfc6
--- /dev/null
+++ b/src/Ryujinx.Graphics.OpenGL/Debugger.cs
@@ -0,0 +1,101 @@
+using OpenTK.Graphics.OpenGL;
+using Ryujinx.Common.Configuration;
+using Ryujinx.Common.Logging;
+using System;
+using System.Runtime.InteropServices;
+using System.Threading;
+
+namespace Ryujinx.Graphics.OpenGL
+{
+    public static class Debugger
+    {
+        private static DebugProc _debugCallback;
+
+        private static int _counter;
+
+        public static void Initialize(GraphicsDebugLevel logLevel)
+        {
+            // Disable everything
+            GL.DebugMessageControl(DebugSourceControl.DontCare, DebugTypeControl.DontCare, DebugSeverityControl.DontCare, 0, (int[])null, false);
+
+            if (logLevel == GraphicsDebugLevel.None)
+            {
+                GL.Disable(EnableCap.DebugOutputSynchronous);
+                GL.DebugMessageCallback(null, IntPtr.Zero);
+
+                return;
+            }
+
+            GL.Enable(EnableCap.DebugOutputSynchronous);
+
+            if (logLevel == GraphicsDebugLevel.Error)
+            {
+                GL.DebugMessageControl(DebugSourceControl.DontCare, DebugTypeControl.DebugTypeError, DebugSeverityControl.DontCare, 0, (int[])null, true);
+            }
+            else if (logLevel == GraphicsDebugLevel.Slowdowns)
+            {
+                GL.DebugMessageControl(DebugSourceControl.DontCare, DebugTypeControl.DebugTypeError, DebugSeverityControl.DontCare, 0, (int[])null, true);
+                GL.DebugMessageControl(DebugSourceControl.DontCare, DebugTypeControl.DebugTypePerformance, DebugSeverityControl.DontCare, 0, (int[])null, true);
+            }
+            else
+            {
+                GL.DebugMessageControl(DebugSourceControl.DontCare, DebugTypeControl.DontCare, DebugSeverityControl.DontCare, 0, (int[])null, true);
+            }
+
+            _counter = 0;
+            _debugCallback = GLDebugHandler;
+
+            GL.DebugMessageCallback(_debugCallback, IntPtr.Zero);
+
+            Logger.Warning?.Print(LogClass.Gpu, "OpenGL Debugging is enabled. Performance will be negatively impacted.");
+        }
+
+        private static void GLDebugHandler(
+            DebugSource source,
+            DebugType type,
+            int id,
+            DebugSeverity severity,
+            int length,
+            IntPtr message,
+            IntPtr userParam)
+        {
+            string msg = Marshal.PtrToStringUTF8(message).Replace('\n', ' ');
+
+            switch (type)
+            {
+                case DebugType.DebugTypeError      : Logger.Error?.Print(LogClass.Gpu, $"{severity}: {msg}\nCallStack={Environment.StackTrace}", "GLERROR"); break;
+                case DebugType.DebugTypePerformance: Logger.Warning?.Print(LogClass.Gpu, $"{severity}: {msg}", "GLPERF"); break;
+                case DebugType.DebugTypePushGroup  : Logger.Info?.Print(LogClass.Gpu, $"{{ ({id}) {severity}: {msg}", "GLINFO"); break;
+                case DebugType.DebugTypePopGroup   : Logger.Info?.Print(LogClass.Gpu, $"}} ({id}) {severity}: {msg}", "GLINFO"); break;
+                default:
+                    if (source == DebugSource.DebugSourceApplication)
+                    {
+                        Logger.Info?.Print(LogClass.Gpu, $"{type} {severity}: {msg}", "GLINFO");
+                    }
+                    else
+                    {
+                        Logger.Debug?.Print(LogClass.Gpu, $"{type} {severity}: {msg}", "GLDEBUG");
+                    }
+                    break;
+            }
+        }
+
+        // Useful debug helpers
+        public static void PushGroup(string dbgMsg)
+        {
+            int counter = Interlocked.Increment(ref _counter);
+
+            GL.PushDebugGroup(DebugSourceExternal.DebugSourceApplication, counter, dbgMsg.Length, dbgMsg);
+        }
+
+        public static void PopGroup()
+        {
+            GL.PopDebugGroup();
+        }
+
+        public static void Print(string dbgMsg, DebugType type = DebugType.DebugTypeMarker, DebugSeverity severity = DebugSeverity.DebugSeverityNotification, int id = 999999)
+        {
+            GL.DebugMessageInsert(DebugSourceExternal.DebugSourceApplication, type, id, severity, dbgMsg.Length, dbgMsg);
+        }
+    }
+}