Fixed an issue where viewport X/Y position was wrongly set to the win…

…dow dimensions.

Possible partial fix for issue #29

Various rtx.conf tweaks to bring the visuals closer to the original a…

…esthethics.

Added a flag to the rendercontext that tracks if the frame is intende…

…d to be rasterized or not.

If it's rasterized, we bind the lightmap textures. With RTX Remix, we're not interested in the
lightmap textures unless it's the skybox being renderered. Otherwise it just adds too much junk.

* Added RenderSkybox option to the .ini (and disabled it by default u…

…ntil skybox is fixed).

* No longer write (default) .ini on startup. There are now code-defaults and the .ini ships with the package anyway.

Skyboxes now work (mostly) properly.

There are some issues with transparency effects here-and-there.

Disco light fix

Minor tweak to screencomparison tool

Settled on att value 0.0035.

Changed the way the player character is rendered.

Previously, the filtering was un-done (normally Deus Ex filters out the player character when building the scenegraph).
However, this left to issues with SpecialCoords and HasSpecialCoords being set/unset unexpectedly.
Instead, we now render the character model directly (with RenderMesh) and restore the SpecialCoords values.

Fixed various bugs triggered by aggressive resolution switching:

* If RTX remix reports that there are fullscreen modes available, fallback to windowed, previously there was a crash.
* Fixed issue where FDynamicSprite hijack was not restored properly, leading to a hang.
* Resolution list was not implemented, so users not using Deus Exe were unable to select a resolution.