From 5626f2ca1c49342b20772224f956147df6957b5a Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Sun, 21 May 2023 14:04:21 -0300
Subject: Replace ShaderBindings with new ResourceLayout structure for Vulkan
 (#5025)

* Introduce ResourceLayout

* Part 1: Use new ResourceSegments array on UpdateAndBind

* Part 2: Use ResourceLayout to build PipelineLayout

* Delete old code

* XML docs

* Fix shader cache load NRE

* Fix typo
---
 .../ResourceLayoutBuilder.cs                       | 67 ++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 src/Ryujinx.Graphics.Vulkan/ResourceLayoutBuilder.cs

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

diff --git a/src/Ryujinx.Graphics.Vulkan/ResourceLayoutBuilder.cs b/src/Ryujinx.Graphics.Vulkan/ResourceLayoutBuilder.cs
new file mode 100644
index 00000000..eac0d6c2
--- /dev/null
+++ b/src/Ryujinx.Graphics.Vulkan/ResourceLayoutBuilder.cs
@@ -0,0 +1,67 @@
+using Ryujinx.Graphics.GAL;
+using System;
+using System.Collections.Generic;
+
+namespace Ryujinx.Graphics.Vulkan
+{
+    class ResourceLayoutBuilder
+    {
+        private const int TotalSets = PipelineBase.DescriptorSetLayouts;
+
+        private readonly List<ResourceDescriptor>[] _resourceDescriptors;
+        private readonly List<ResourceUsage>[] _resourceUsages;
+
+        public ResourceLayoutBuilder()
+        {
+            _resourceDescriptors = new List<ResourceDescriptor>[TotalSets];
+            _resourceUsages = new List<ResourceUsage>[TotalSets];
+
+            for (int index = 0; index < TotalSets; index++)
+            {
+                _resourceDescriptors[index] = new();
+                _resourceUsages[index] = new();
+            }
+        }
+
+        public ResourceLayoutBuilder Add(ResourceStages stages, ResourceType type, int binding)
+        {
+            int setIndex = type switch
+            {
+                ResourceType.UniformBuffer => PipelineBase.UniformSetIndex,
+                ResourceType.StorageBuffer => PipelineBase.StorageSetIndex,
+                ResourceType.TextureAndSampler or ResourceType.BufferTexture => PipelineBase.TextureSetIndex,
+                ResourceType.Image or ResourceType.BufferImage => PipelineBase.ImageSetIndex,
+                _ => throw new ArgumentException($"Invalid resource type \"{type}\".")
+            };
+
+            ResourceAccess access = IsReadOnlyType(type) ? ResourceAccess.Read : ResourceAccess.ReadWrite;
+
+            _resourceDescriptors[setIndex].Add(new ResourceDescriptor(binding, 1, type, stages));
+            _resourceUsages[setIndex].Add(new ResourceUsage(binding, type, stages, access));
+
+            return this;
+        }
+
+        private static bool IsReadOnlyType(ResourceType type)
+        {
+            return type == ResourceType.UniformBuffer ||
+                   type == ResourceType.Sampler ||
+                   type == ResourceType.TextureAndSampler ||
+                   type == ResourceType.BufferTexture;
+        }
+
+        public ResourceLayout Build()
+        {
+            var descriptors = new ResourceDescriptorCollection[TotalSets];
+            var usages = new ResourceUsageCollection[TotalSets];
+
+            for (int index = 0; index < TotalSets; index++)
+            {
+                descriptors[index] = new ResourceDescriptorCollection(_resourceDescriptors[index].ToArray().AsReadOnly());
+                usages[index] = new ResourceUsageCollection(_resourceUsages[index].ToArray().AsReadOnly());
+            }
+
+            return new ResourceLayout(descriptors.AsReadOnly(), usages.AsReadOnly());
+        }
+    }
+}
\ No newline at end of file
-- 
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