Improved GPU command lists decoding (#499)

* Better implementation of the DMA pusher, misc fixes

* Remove some debug code

* Correct RGBX8 format

* Add support for linked Texture Sampler Control

* Attempt to fix upside down screen issue

Ryujinx.Graphics/NvGpuEngine3dReg.cs

@@ -36,6 +36,7 @@ namespace Ryujinx.Graphics
         ZetaHoriz            = 0x48a,
         ZetaVert             = 0x48b,
         ZetaArrayMode        = 0x48c,
+        LinkedTsc            = 0x48d,
         DepthTestEnable      = 0x4b3,
         BlendIndependent     = 0x4b9,
         DepthWriteEnable     = 0x4ba,
@@ -57,6 +58,7 @@ namespace Ryujinx.Graphics
         StencilFrontFuncRef  = 0x4e5,
         StencilFrontFuncMask = 0x4e6,
         StencilFrontMask     = 0x4e7,
+        ScreenYControl       = 0x4eb,
         VertexArrayElemBase  = 0x50d,
         VertexArrayInstBase  = 0x50e,
         ZetaEnable           = 0x54e,