More Shader Gen Stuff

Mostly copied from GLSL since in terms of syntax within blocks they’re pretty similar. Likely the result will need tweaking…

Isn’t that conveniant?

“Do the simd_shuffle”

atomics

Remaining instructions

Remove removed special instructions

Getting somewhere…

src/Ryujinx.Graphics.Shader/CodeGen/Msl/Instructions/InstInfo.cs

@@ -6,10 +6,13 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Msl.Instructions
 
         public string OpName { get; }
 
-        public InstInfo(InstType type, string opName)
+        public int Precedence { get; }
+
+        public InstInfo(InstType type, string opName, int precedence)
         {
             Type = type;
             OpName = opName;
+            Precedence = precedence;
         }
     }
 }