Make structs readonly when applicable (#4002)

* Make all structs readonly when applicable. It should reduce amount of needless defensive copies

* Make structs with trivial boilerplate equality code record structs

* Remove unnecessary readonly modifiers from TextureCreateInfo

* Make BitMap structs readonly too

4 files changed, 4 insertions, 4 deletions

diff --git a/Ryujinx.Graphics.Texture/Region.cs b/Ryujinx.Graphics.Texture/Region.cs
index a60951e3..e59888a0 100644
--- a/Ryujinx.Graphics.Texture/Region.cs
+++ b/Ryujinx.Graphics.Texture/Region.cs
@@ -1,6 +1,6 @@
 namespace Ryujinx.Graphics.Texture
 {
-    public struct Region
+    public readonly struct Region
     {
         public int Offset { get; }
         public int Size { get; }
diff --git a/Ryujinx.Graphics.Texture/Size.cs b/Ryujinx.Graphics.Texture/Size.cs
index 35611b98..21c45b38 100644
--- a/Ryujinx.Graphics.Texture/Size.cs
+++ b/Ryujinx.Graphics.Texture/Size.cs
@@ -1,6 +1,6 @@
 namespace Ryujinx.Graphics.Texture
 {
-    public struct Size
+    public readonly struct Size
     {
         public int Width  { get; }
         public int Height { get; }
diff --git a/Ryujinx.Graphics.Texture/SizeInfo.cs b/Ryujinx.Graphics.Texture/SizeInfo.cs
index ed5379b3..eb573728 100644
--- a/Ryujinx.Graphics.Texture/SizeInfo.cs
+++ b/Ryujinx.Graphics.Texture/SizeInfo.cs
@@ -3,7 +3,7 @@ using System.Collections.Generic;
 
 namespace Ryujinx.Graphics.Texture
 {
-    public struct SizeInfo
+    public readonly struct SizeInfo
     {
         private readonly int[] _mipOffsets;
 
diff --git a/Ryujinx.Graphics.Texture/Utils/BC7ModeInfo.cs b/Ryujinx.Graphics.Texture/Utils/BC7ModeInfo.cs
index 749324bf..687df22c 100644
--- a/Ryujinx.Graphics.Texture/Utils/BC7ModeInfo.cs
+++ b/Ryujinx.Graphics.Texture/Utils/BC7ModeInfo.cs
@@ -1,6 +1,6 @@
 namespace Ryujinx.Graphics.Texture.Utils
 {
-    struct BC7ModeInfo
+    readonly struct BC7ModeInfo
     {
         public readonly int SubsetCount;
         public readonly int PartitionBitCount;