* Attempt to support deswizzle of sparse tiled textures
* Use correct frame buffer and viewport sizes, started to clean up the copy engine
* Correct texture width alignment
* Use Scale/Translate registers to calculate viewport rect
* Allow texture copy between frame buffers
* Implement stencil testing
* Implement depth testing
* Implement face culling
* Implement front face
* Comparison functions now take OGL enums too
* Fix front facing when flipping was used
* Add depth and stencil clear values
* Call OpenGL functions directly, remove the pfifo thread, some refactoring
* Fix PerformanceStatistics calculating the wrong host fps, remove wait event on PFIFO as this wasn't exactly was causing the freezes (may replace with an exception later)
* Organized the Gpu folder a bit more, renamed a few things, address PR feedback
* Make PerformanceStatistics thread safe
* Remove unused constant
* Use unlimited update rate for better pref
