1 files changed, 40 insertions, 0 deletions
diff --git a/src/Ryujinx.Graphics.Shader/InputTopology.cs b/src/Ryujinx.Graphics.Shader/InputTopology.cs
new file mode 100644
index 00000000..da332909
--- /dev/null
+++ b/src/Ryujinx.Graphics.Shader/InputTopology.cs
@@ -0,0 +1,40 @@
+namespace Ryujinx.Graphics.Shader
+{
+    public enum InputTopology : byte
+    {
+        Points,
+        Lines,
+        LinesAdjacency,
+        Triangles,
+        TrianglesAdjacency
+    }
+
+    static class InputTopologyExtensions
+    {
+        public static string ToGlslString(this InputTopology topology)
+        {
+            return topology switch
+            {
+                InputTopology.Points => "points",
+                InputTopology.Lines => "lines",
+                InputTopology.LinesAdjacency => "lines_adjacency",
+                InputTopology.Triangles => "triangles",
+                InputTopology.TrianglesAdjacency => "triangles_adjacency",
+                _ => "points"
+            };
+        }
+
+        public static int ToInputVertices(this InputTopology topology)
+        {
+            return topology switch
+            {
+                InputTopology.Points => 1,
+                InputTopology.Lines or
+                InputTopology.LinesAdjacency => 2,
+                InputTopology.Triangles or
+                InputTopology.TrianglesAdjacency => 3,
+                _ => 1
+            };
+        }
+    }
+}
+\ No newline at end of file