Add support for fragment shader interlock (#2768)

* Support coherent images

* Add support for fragment shader interlock

* Change to tree based match approach

* Refactor + check for branch targets and external registers

* Make detection more robust

* Use Intel fragment shader ordering if interlock is not available, use nothing if both are not available

* Remove unused field

Ryujinx.Graphics.Shader/IntermediateRepresentation/Instruction.cs

@@ -62,6 +62,8 @@ namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
         EmitVertex,
         EndPrimitive,
         ExponentB2,
+        FSIBegin,
+        FSIEnd,
         FindFirstSetS32,
         FindFirstSetU32,
         Floor,

Ryujinx.Graphics.Shader/IntermediateRepresentation/TextureFlags.cs

@@ -14,6 +14,7 @@ namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
         LodLevel    = 1 << 5,
         Offset      = 1 << 6,
         Offsets     = 1 << 7,
+        Coherent    = 1 << 8,
 
         AtomicMask  = 15 << 16,