Initial work

Ryujinx.Graphics.Shader/Decoders/OpCodeBranch.cs

@@ -0,0 +1,19 @@
+using Ryujinx.Graphics.Shader.Instructions;
+
+namespace Ryujinx.Graphics.Shader.Decoders
+{
+    class OpCodeBranch : OpCode
+    {
+        public int Offset { get; }
+
+        public OpCodeBranch(InstEmitter emitter, ulong address, long opCode) : base(emitter, address, opCode)
+        {
+            Offset = ((int)(opCode >> 20) << 8) >> 8;
+        }
+
+        public ulong GetAbsoluteAddress()
+        {
+            return (ulong)((long)Address + (long)Offset + 8);
+        }
+    }
+}