From c94f0fbb8307873f68df982c100d3fb01aa6ccf5 Mon Sep 17 00:00:00 2001
From: riperiperi <rhy3756547@hotmail.com>
Date: Wed, 31 Jan 2024 22:49:50 +0000
Subject: Vulkan: Add Render Pass / Framebuffer Cache (#6182)

* Vulkan: Add Render Pass / Framebuffer Cache

Cache is owned by each texture view.

- Window's way of getting framebuffer cache for swapchain images is really messy - it creates a TextureView out of just a vk image view, with invalid info and no storage.

* Clear up limited use of alternate TextureView constructor

* Formatting and messages

* More formatting and messages

I apologize for `_colorsCanonical[index]?.Storage?.InsertReadToWriteBarrier`, the compiler made me do it

* Self review, change GetFramebuffer to GetPassAndFramebuffer

* Avoid allocations on Remove for HashTableSlim

* Member can be readonly

* Generate texture create info for swapchain images

* Improve hashcode

* Remove format, samples, size and isDepthStencil when possible

Tested in a number of games, seems fine.

* Removed load op barriers

These can be introduced later.

* Reintroduce UpdateModifications

Technically meant to be replaced by load op stuff.
---
 src/Ryujinx.Graphics.Vulkan/RenderPassCacheKey.cs | 43 +++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 src/Ryujinx.Graphics.Vulkan/RenderPassCacheKey.cs

(limited to 'src/Ryujinx.Graphics.Vulkan/RenderPassCacheKey.cs')

diff --git a/src/Ryujinx.Graphics.Vulkan/RenderPassCacheKey.cs b/src/Ryujinx.Graphics.Vulkan/RenderPassCacheKey.cs
new file mode 100644
index 00000000..7c57b8fe
--- /dev/null
+++ b/src/Ryujinx.Graphics.Vulkan/RenderPassCacheKey.cs
@@ -0,0 +1,43 @@
+using System;
+using System.Linq;
+
+namespace Ryujinx.Graphics.Vulkan
+{
+    internal readonly struct RenderPassCacheKey : IRefEquatable<RenderPassCacheKey>
+    {
+        private readonly TextureView _depthStencil;
+        private readonly TextureView[] _colors;
+
+        public RenderPassCacheKey(TextureView depthStencil, TextureView[] colors)
+        {
+            _depthStencil = depthStencil;
+            _colors = colors;
+        }
+
+        public override int GetHashCode()
+        {
+            HashCode hc = new();
+
+            hc.Add(_depthStencil);
+
+            if (_colors != null)
+            {
+                foreach (var color in _colors)
+                {
+                    hc.Add(color);
+                }
+            }
+
+            return hc.ToHashCode();
+        }
+
+        public bool Equals(ref RenderPassCacheKey other)
+        {
+            bool colorsNull = _colors == null;
+            bool otherNull = other._colors == null;
+            return other._depthStencil == _depthStencil &&
+                colorsNull == otherNull &&
+                (colorsNull || other._colors.SequenceEqual(_colors));
+        }
+    }
+}
-- 
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