Stop using glTransformFeedbackVaryings and use explicit layout on the shader (#3012)

* Stop using glTransformFeedbackVarying and use explicit layout on the shader

* This is no longer needed

* Shader cache version bump

* Fix gl_PerVertex output for tessellation control shaders

Ryujinx.Graphics.Shader/StructuredIr/StructuredProgramInfo.cs

@@ -2,15 +2,35 @@ using System.Collections.Generic;
 
 namespace Ryujinx.Graphics.Shader.StructuredIr
 {
+    struct TransformFeedbackOutput
+    {
+        public readonly bool Valid;
+        public readonly int Buffer;
+        public readonly int Offset;
+        public readonly int Stride;
+
+        public TransformFeedbackOutput(int buffer, int offset, int stride)
+        {
+            Valid = true;
+            Buffer = buffer;
+            Offset = offset;
+            Stride = stride;
+        }
+    }
+
     class StructuredProgramInfo
     {
         public List<StructuredFunction> Functions { get; }
 
         public HelperFunctionsMask HelperFunctionsMask { get; set; }
 
+        public TransformFeedbackOutput[] TransformFeedbackOutputs { get; }
+
         public StructuredProgramInfo()
         {
             Functions = new List<StructuredFunction>();
+
+            TransformFeedbackOutputs = new TransformFeedbackOutput[0x80];
         }
     }
 }