From d9b63353b019e1f1775370154f4f045ff14184ce Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Mon, 17 Apr 2023 05:13:53 -0300
Subject: Support copy between multisample and non-multisample depth textures
 (#4676)

* Support copy between multisample and non-multisample depth textures

* PR feedback
---
 Ryujinx.Graphics.OpenGL/Image/IntermmediatePool.cs | 103 +++++++++++++++++++++
 1 file changed, 103 insertions(+)
 create mode 100644 Ryujinx.Graphics.OpenGL/Image/IntermmediatePool.cs

(limited to 'Ryujinx.Graphics.OpenGL/Image/IntermmediatePool.cs')

diff --git a/Ryujinx.Graphics.OpenGL/Image/IntermmediatePool.cs b/Ryujinx.Graphics.OpenGL/Image/IntermmediatePool.cs
new file mode 100644
index 00000000..4f167e89
--- /dev/null
+++ b/Ryujinx.Graphics.OpenGL/Image/IntermmediatePool.cs
@@ -0,0 +1,103 @@
+using Ryujinx.Graphics.GAL;
+using System;
+using System.Collections.Generic;
+
+namespace Ryujinx.Graphics.OpenGL.Image
+{
+    class IntermediatePool : IDisposable
+    {
+        private readonly OpenGLRenderer _renderer;
+        private readonly List<TextureView> _entries;
+
+        public IntermediatePool(OpenGLRenderer renderer)
+        {
+            _renderer = renderer;
+            _entries = new List<TextureView>();
+        }
+
+        public TextureView GetOrCreateWithAtLeast(
+            Target target,
+            int blockWidth,
+            int blockHeight,
+            int bytesPerPixel,
+            Format format,
+            int width,
+            int height,
+            int depth,
+            int levels,
+            int samples)
+        {
+            TextureView entry;
+
+            for (int i = 0; i < _entries.Count; i++)
+            {
+                entry = _entries[i];
+
+                if (entry.Target == target && entry.Format == format && entry.Info.Samples == samples)
+                {
+                    if (entry.Width < width ||
+                        entry.Height < height ||
+                        entry.Info.Depth < depth ||
+                        entry.Info.Levels < levels)
+                    {
+                        width = Math.Max(width, entry.Width);
+                        height = Math.Max(height, entry.Height);
+                        depth = Math.Max(depth, entry.Info.Depth);
+                        levels = Math.Max(levels, entry.Info.Levels);
+
+                        entry.Dispose();
+                        entry = CreateNew(target, blockWidth, blockHeight, bytesPerPixel, format, width, height, depth, levels, samples);
+                        _entries[i] = entry;
+                    }
+
+                    return entry;
+                }
+            }
+
+            entry = CreateNew(target, blockWidth, blockHeight, bytesPerPixel, format, width, height, depth, levels, samples);
+            _entries.Add(entry);
+
+            return entry;
+        }
+
+        private TextureView CreateNew(
+            Target target,
+            int blockWidth,
+            int blockHeight,
+            int bytesPerPixel,
+            Format format,
+            int width,
+            int height,
+            int depth,
+            int levels,
+            int samples)
+        {
+            return (TextureView)_renderer.CreateTexture(new TextureCreateInfo(
+                width,
+                height,
+                depth,
+                levels,
+                samples,
+                blockWidth,
+                blockHeight,
+                bytesPerPixel,
+                format,
+                DepthStencilMode.Depth,
+                target,
+                SwizzleComponent.Red,
+                SwizzleComponent.Green,
+                SwizzleComponent.Blue,
+                SwizzleComponent.Alpha), 1f);
+        }
+
+        public void Dispose()
+        {
+            foreach (TextureView entry in _entries)
+            {
+                entry.Dispose();
+            }
+
+            _entries.Clear();
+        }
+    }
+}
\ No newline at end of file
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