Fix vertex buffer size on the gpu when the draw vertex count is less than the buffer size, added a few more registers (currently not implemented)

Ryujinx.Graphics/Gal/GalComparisonOp.cs

@@ -0,0 +1,14 @@
+namespace Ryujinx.Graphics.Gal
+{
+    public enum GalComparisonOp
+    {
+        Never    = 0x200,
+        Less     = 0x201,
+        Equal    = 0x202,
+        Lequal   = 0x203,
+        Greater  = 0x204,
+        NotEqual = 0x205,
+        Gequal   = 0x206,
+        Always   = 0x207
+    }
+}