Better viewport flipping and depth mode detection method (#1556)

* Use a better viewport flipping approach

* New approach to detect depth mode

* nit: Sort method on the OpenGL backend

* Adjust spacing on comment

* Unswap near and far parameters based on ScaleZ

Ryujinx.Graphics.GAL/IPipeline.cs

@@ -50,8 +50,6 @@ namespace Ryujinx.Graphics.GAL
 
         void SetLogicOpState(bool enable, LogicalOp op);
 
-        void SetOrigin(Origin origin);
-
         void SetPointParameters(float size, bool isProgramPointSize, bool enablePointSprite, Origin origin);
 
         void SetPrimitiveRestart(bool enable, int index);