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/Gal/OpenGL/OGLRenderTarget.cs

@@ -421,8 +421,6 @@ namespace Ryujinx.Graphics.Gal.OpenGL
 
                 ClearBufferMask Mask = GetClearMask(SrcTex);
 
-                GL.Clear(Mask);
-
                 GL.BlitFramebuffer(SrcX0, SrcY0, SrcX1, SrcY1, DstX0, DstY0, DstX1, DstY1, Mask, Filter);
             }
         }