Texture loading: reduce memory allocations (#6623)

* rebase

* add methods Ryyjinx.Common EmbeddedResources and SteamUtils

* GAL changes - change SetData() methods and ThreadedTexture commands to use IMemoryOwner<byte> instead of SpanOrArray<byte>

* Ryujinx.Graphics.Texture: change texture conversion methods to return IMemoryOwner<byte> and allocate from ByteMemoryPool

* Ryujinx.Graphics.OpenGL: update ITexture and Texture-like types with SetData() methods to take IMemoryOwner<byte> instead of SpanOrArray<byte>

* Ryujinx.Graphics.Vulkan: update ITexture and Texture-like types with SetData() methods to take IMemoryOwner<byte> instead of SpanOrArray<byte>

* Ryujinx.Graphics.Gpu: update ITexture and Texture-like types with SetData() methods to take IMemoryOwner<byte> instead of SpanOrArray<byte>

* Remove now-unused SpanOrArray<T>

* post-rebase cleanup

* PixelConverter: remove unsafe modifier on safe methods, and remove one unnecessary cast

* use ByteMemoryPool.Rent() in GetWritableRegion() impls

* fix formatting, rename `ReadRentedMemory()` to `ReadFileToRentedMemory()``

* Texture.ConvertToHostCompatibleFormat(): dispose of `result` in Astc decode branch

1 files changed, 11 insertions, 9 deletions

diff --git a/src/Ryujinx.Graphics.Texture/ETC2Decoder.cs b/src/Ryujinx.Graphics.Texture/ETC2Decoder.cs
index 57f2e98d..52801ff4 100644
--- a/src/Ryujinx.Graphics.Texture/ETC2Decoder.cs
+++ b/src/Ryujinx.Graphics.Texture/ETC2Decoder.cs
@@ -1,5 +1,7 @@
 using Ryujinx.Common;
+using Ryujinx.Common.Memory;
 using System;
+using System.Buffers;
 using System.Buffers.Binary;
 using System.Runtime.InteropServices;
 
@@ -49,15 +51,15 @@ namespace Ryujinx.Graphics.Texture
             new int[] { -3, -5, -7, -9, 2, 4, 6, 8 },
         };
 
-        public static byte[] DecodeRgb(ReadOnlySpan<byte> data, int width, int height, int depth, int levels, int layers)
+        public static IMemoryOwner<byte> DecodeRgb(ReadOnlySpan<byte> data, int width, int height, int depth, int levels, int layers)
         {
             ReadOnlySpan<ulong> dataUlong = MemoryMarshal.Cast<byte, ulong>(data);
 
             int inputOffset = 0;
 
-            byte[] output = new byte[CalculateOutputSize(width, height, depth, levels, layers)];
+            IMemoryOwner<byte> output = ByteMemoryPool.Rent(CalculateOutputSize(width, height, depth, levels, layers));
 
-            Span<uint> outputUint = MemoryMarshal.Cast<byte, uint>(output);
+            Span<uint> outputUint = MemoryMarshal.Cast<byte, uint>(output.Memory.Span);
             Span<uint> tile = stackalloc uint[BlockWidth * BlockHeight];
 
             int imageBaseOOffs = 0;
@@ -111,15 +113,15 @@ namespace Ryujinx.Graphics.Texture
             return output;
         }
 
-        public static byte[] DecodePta(ReadOnlySpan<byte> data, int width, int height, int depth, int levels, int layers)
+        public static IMemoryOwner<byte> DecodePta(ReadOnlySpan<byte> data, int width, int height, int depth, int levels, int layers)
         {
             ReadOnlySpan<ulong> dataUlong = MemoryMarshal.Cast<byte, ulong>(data);
 
             int inputOffset = 0;
 
-            byte[] output = new byte[CalculateOutputSize(width, height, depth, levels, layers)];
+            IMemoryOwner<byte> output = ByteMemoryPool.Rent(CalculateOutputSize(width, height, depth, levels, layers));
 
-            Span<uint> outputUint = MemoryMarshal.Cast<byte, uint>(output);
+            Span<uint> outputUint = MemoryMarshal.Cast<byte, uint>(output.Memory.Span);
             Span<uint> tile = stackalloc uint[BlockWidth * BlockHeight];
 
             int imageBaseOOffs = 0;
@@ -168,15 +170,15 @@ namespace Ryujinx.Graphics.Texture
             return output;
         }
 
-        public static byte[] DecodeRgba(ReadOnlySpan<byte> data, int width, int height, int depth, int levels, int layers)
+        public static IMemoryOwner<byte> DecodeRgba(ReadOnlySpan<byte> data, int width, int height, int depth, int levels, int layers)
         {
             ReadOnlySpan<ulong> dataUlong = MemoryMarshal.Cast<byte, ulong>(data);
 
             int inputOffset = 0;
 
-            byte[] output = new byte[CalculateOutputSize(width, height, depth, levels, layers)];
+            IMemoryOwner<byte> output = ByteMemoryPool.Rent(CalculateOutputSize(width, height, depth, levels, layers));
 
-            Span<uint> outputUint = MemoryMarshal.Cast<byte, uint>(output);
+            Span<uint> outputUint = MemoryMarshal.Cast<byte, uint>(output.Memory.Span);
             Span<uint> tile = stackalloc uint[BlockWidth * BlockHeight];
 
             int imageBaseOOffs = 0;