Fix wrong face culling once and for all (#1277)

* Viewport swizzle support on NV and clip origin

* Initialize default viewport swizzle state, emulate viewport swizzle on shaders when not supported

* Address PR feedback

Ryujinx.Graphics.Shader/IGpuAccessor.cs

@@ -64,9 +64,22 @@
             return true;
         }
 
+        public bool QuerySupportsViewportSwizzle()
+        {
+            return true;
+        }
+
         public TextureFormat QueryTextureFormat(int handle)
         {
             return TextureFormat.R8G8B8A8Unorm;
         }
+
+        public int QueryViewportSwizzle(int component)
+        {
+            // Bit 0: Negate flag.
+            // Bits 2-1: Component.
+            // Example: 0b110 = W, 0b111 = -W, 0b000 = X, 0b010 = Y etc.
+            return component << 1;
+        }
     }
 }