1 files changed, 39 insertions, 0 deletions
diff --git a/Ryujinx.Graphics.Vic/Types/BitfieldExtensions.cs b/Ryujinx.Graphics.Vic/Types/BitfieldExtensions.cs
new file mode 100644
index 00000000..06d0f006
--- /dev/null
+++ b/Ryujinx.Graphics.Vic/Types/BitfieldExtensions.cs
@@ -0,0 +1,39 @@
+using System.Runtime.CompilerServices;
+
+namespace Ryujinx.Graphics.Vic.Types
+{
+    static class BitfieldExtensions
+    {
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static bool Extract(this int value, int lsb)
+        {
+            return ((value >> (lsb & 0x1f)) & 1) != 0;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static int Extract(this int value, int lsb, int length)
+        {
+            return (value >> (lsb & 0x1f)) & (int)(uint.MaxValue >> (32 - length));
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static bool Extract(this long value, int lsb)
+        {
+            return ((int)(value >> (lsb & 0x3f)) & 1) != 0;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static int Extract(this long value, int lsb, int length)
+        {
+            return (int)(value >> (lsb & 0x3f)) & (int)(uint.MaxValue >> (32 - length));
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static int ExtractSx(this long value, int lsb, int length)
+        {
+            int shift = lsb & 0x3f;
+
+            return (int)((value << (64 - (shift + length))) >> (64 - length));
+        }
+    }
+}