Add ATOMS, LDS, POPC, RED, STS and VOTE shader instructions, start changing the way how global memory is handled

Ryujinx.Graphics.Shader/ShaderProgram.cs

@@ -1,3 +1,5 @@
+using System;
+
 namespace Ryujinx.Graphics.Shader
 {
     public class ShaderProgram
@@ -15,6 +17,11 @@ namespace Ryujinx.Graphics.Shader
             Code  = code;
         }
 
+        public void Prepend(string line)
+        {
+            Code = line + Environment.NewLine + Code;
+        }
+
         public void Replace(string name, string value)
         {
             Code = Code.Replace(name, value);