From 1df6c07f78c4c3b8c7fc679d7466f79a10c2d496 Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Mon, 4 Dec 2023 16:30:19 -0300
Subject: Implement support for multi-range buffers using Vulkan sparse
 mappings (#5427)

* Pass MultiRange to BufferManager

* Implement support for multi-range buffers using Vulkan sparse mappings

* Use multi-range for remaining buffers, delete old methods

* Assume that more buffers are contiguous

* Dispose multi-range buffers after they are removed from the list

* Properly init BufferBounds for constant and storage buffers

* Do not try reading zero bytes data from an unmapped address on the shader cache + PR feedback

* Fix misaligned sparse buffer offsets

* Null check can be simplified

* PR feedback
---
 src/Ryujinx.Graphics.Gpu/Memory/Buffer.cs | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

(limited to 'src/Ryujinx.Graphics.Gpu/Memory/Buffer.cs')

diff --git a/src/Ryujinx.Graphics.Gpu/Memory/Buffer.cs b/src/Ryujinx.Graphics.Gpu/Memory/Buffer.cs
index c9286a61..12461e96 100644
--- a/src/Ryujinx.Graphics.Gpu/Memory/Buffer.cs
+++ b/src/Ryujinx.Graphics.Gpu/Memory/Buffer.cs
@@ -43,6 +43,11 @@ namespace Ryujinx.Graphics.Gpu.Memory
         /// </summary>
         public int UnmappedSequence { get; private set; }
 
+        /// <summary>
+        /// Indicates if the buffer can be used in a sparse buffer mapping.
+        /// </summary>
+        public bool SparseCompatible { get; }
+
         /// <summary>
         /// Ranges of the buffer that have been modified on the GPU.
         /// Ranges defined here cannot be updated from CPU until a CPU waiting sync point is reached.
@@ -77,15 +82,25 @@ namespace Ryujinx.Graphics.Gpu.Memory
         /// <param name="physicalMemory">Physical memory where the buffer is mapped</param>
         /// <param name="address">Start address of the buffer</param>
         /// <param name="size">Size of the buffer in bytes</param>
+        /// <param name="sparseCompatible">Indicates if the buffer can be used in a sparse buffer mapping</param>
         /// <param name="baseBuffers">Buffers which this buffer contains, and will inherit tracking handles from</param>
-        public Buffer(GpuContext context, PhysicalMemory physicalMemory, ulong address, ulong size, IEnumerable<Buffer> baseBuffers = null)
+        public Buffer(
+            GpuContext context,
+            PhysicalMemory physicalMemory,
+            ulong address,
+            ulong size,
+            bool sparseCompatible,
+            IEnumerable<Buffer> baseBuffers = null)
         {
             _context = context;
             _physicalMemory = physicalMemory;
             Address = address;
             Size = size;
+            SparseCompatible = sparseCompatible;
+
+            BufferAccess access = sparseCompatible ? BufferAccess.SparseCompatible : BufferAccess.Default;
 
-            Handle = context.Renderer.CreateBuffer((int)size, baseBuffers?.MaxBy(x => x.Size).Handle ?? BufferHandle.Null);
+            Handle = context.Renderer.CreateBuffer((int)size, access, baseBuffers?.MaxBy(x => x.Size).Handle ?? BufferHandle.Null);
 
             _useGranular = size > GranularBufferThreshold;
 
-- 
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