Perspective bilinear warps are not drawn in the correct location when reloading warps

[BenBergman]

When loading warp info from a json file, the warp texture is drawn beyond the boundaries defined by the warp handles. This can be demonstrated by deleting the json file for the example, positioning all the warps, quiting the app, then re-running the app. The resulting drawn warp is about 100% too wide and 50% too tall.

[BenBergman]

This might be even weirder than I originally thought (or maybe this is unrelated). I've noticed with a bilinear warp that the internal resolution of the warp is lower when loading a settings json. See the below screen shots. The first is when loaded with no settings file. Saving the warp (ie. control points in the corners of the screen) and loading the app again, the grahpics are much more blurry/chunky and drawing a circle shows it stretched out (the text is drawn from a video to fill the warp bounds).

[BenBergman]

I found a fix that fixes both issues. PR incoming shortly.