Initial work

1 files changed, 25 insertions, 0 deletions

diff --git a/Ryujinx.Graphics.Shader/Decoders/BitfieldExtensions.cs b/Ryujinx.Graphics.Shader/Decoders/BitfieldExtensions.cs
new file mode 100644
index 00000000..3bb9bc1f
--- /dev/null
+++ b/Ryujinx.Graphics.Shader/Decoders/BitfieldExtensions.cs
@@ -0,0 +1,25 @@
+namespace Ryujinx.Graphics.Shader.Decoders
+{
+    static class BitfieldExtensions
+    {
+        public static bool Extract(this int value, int lsb)
+        {
+            return ((int)(value >> lsb) & 1) != 0;
+        }
+
+        public static int Extract(this int value, int lsb, int length)
+        {
+            return (int)(value >> lsb) & (int)(uint.MaxValue >> (32 - length));
+        }
+
+        public static bool Extract(this long value, int lsb)
+        {
+            return ((int)(value >> lsb) & 1) != 0;
+        }
+
+        public static int Extract(this long value, int lsb, int length)
+        {
+            return (int)(value >> lsb) & (int)(uint.MaxValue >> (32 - length));
+        }
+    }
+}
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