Initial tessellation shader support (#2534)

* Initial tessellation shader support

* Nits

* Re-arrange built-in table

* This is not needed anymore

* PR feedback

Ryujinx.Graphics.Shader/IntermediateRepresentation/Instruction.cs

@@ -161,5 +161,11 @@ namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
 
             return false;
         }
+
+        public static bool IsTextureQuery(this Instruction inst)
+        {
+            inst &= Instruction.Mask;
+            return inst == Instruction.Lod || inst == Instruction.TextureSize;
+        }
     }
 }

Ryujinx.Graphics.Shader/IntermediateRepresentation/OperandHelper.cs

@@ -15,6 +15,11 @@ namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
             return new Operand(OperandType.Attribute, value);
         }
 
+        public static Operand AttributePerPatch(int value)
+        {
+            return new Operand(OperandType.AttributePerPatch, value);
+        }
+
         public static Operand Cbuf(int slot, int offset)
         {
             return new Operand(slot, offset);

Ryujinx.Graphics.Shader/IntermediateRepresentation/OperandType.cs

@@ -4,6 +4,7 @@ namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
     {
         Argument,
         Attribute,
+        AttributePerPatch,
         Constant,
         ConstantBuffer,
         Label,
@@ -11,4 +12,12 @@ namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
         Register,
         Undefined
     }
+
+    static class OperandTypeExtensions
+    {
+        public static bool IsAttribute(this OperandType type)
+        {
+            return type == OperandType.Attribute || type == OperandType.AttributePerPatch;
+        }
+    }
 }