1 files changed, 99 insertions, 0 deletions
diff --git a/Ryujinx.Graphics.Host1x/SyncptIncrManager.cs b/Ryujinx.Graphics.Host1x/SyncptIncrManager.cs
new file mode 100644
index 00000000..82ac5e7d
--- /dev/null
+++ b/Ryujinx.Graphics.Host1x/SyncptIncrManager.cs
@@ -0,0 +1,99 @@
+using Ryujinx.Graphics.Gpu.Synchronization;
+using System.Collections.Generic;
+
+namespace Ryujinx.Graphics.Host1x
+{
+    class SyncptIncrManager
+    {
+        private readonly SynchronizationManager _syncMgr;
+
+        private struct SyncptIncr
+        {
+            public uint Id { get; }
+            public ClassId ClassId { get; }
+            public uint SyncptId { get; }
+            public bool Done { get; }
+
+            public SyncptIncr(uint id, ClassId classId, uint syncptId, bool done = false)
+            {
+                Id = id;
+                ClassId = classId;
+                SyncptId = syncptId;
+                Done = done;
+            }
+        }
+
+        private readonly List<SyncptIncr> _incrs = new List<SyncptIncr>();
+
+        private uint _currentId;
+
+        public SyncptIncrManager(SynchronizationManager syncMgr)
+        {
+            _syncMgr = syncMgr;
+        }
+
+        public void Increment(uint id)
+        {
+            lock (_incrs)
+            {
+                _incrs.Add(new SyncptIncr(0, 0, id, true));
+
+                IncrementAllDone();
+            }
+        }
+
+        public uint IncrementWhenDone(ClassId classId, uint id)
+        {
+            lock (_incrs)
+            {
+                uint handle = _currentId++;
+
+                _incrs.Add(new SyncptIncr(handle, classId, id));
+
+                return handle;
+            }
+        }
+
+        public void SignalDone(uint handle)
+        {
+            lock (_incrs)
+            {
+                // Set pending increment with the given handle to "done".
+                for (int i = 0; i < _incrs.Count; i++)
+                {
+                    SyncptIncr incr = _incrs[i];
+
+                    if (_incrs[i].Id == handle)
+                    {
+                        _incrs[i] = new SyncptIncr(incr.Id, incr.ClassId, incr.SyncptId, true);
+
+                        break;
+                    }
+                }
+
+                IncrementAllDone();
+            }
+        }
+
+        private void IncrementAllDone()
+        {
+            lock (_incrs)
+            {
+                // Increment all sequential pending increments that are already done.
+                int doneCount = 0;
+
+                for (; doneCount < _incrs.Count; doneCount++)
+                {
+                    if (!_incrs[doneCount].Done)
+                    {
+                        break;
+                    }
+
+                    _syncMgr.IncrementSyncpoint(_incrs[doneCount].SyncptId);
+                }
+
+                _incrs.RemoveRange(0, doneCount);
+            }
+        }
+    }
+}