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/DefaultNames.cs

@@ -0,0 +1,15 @@
+namespace Ryujinx.Graphics.Shader.CodeGen.Msl
+{
+    static class DefaultNames
+    {
+        public const string LocalNamePrefix = "temp";
+
+        public const string PerPatchAttributePrefix = "patchAttr";
+        public const string IAttributePrefix = "inAttr";
+        public const string OAttributePrefix = "outAttr";
+
+        public const string ArgumentNamePrefix = "a";
+
+        public const string UndefinedName = "undef";
+    }
+}