As none of the known Upscaling algorithms handle Alpha, we need to manually restore and interpolate it properly. While this technically reduces visual quality slightly, the chances of this being noticed are slim to none considering that Upscaling is already a questionable solution to quality. Linear was picked here as it produces the best overall result for scaling, keeping gradients mostly in one piece. Mostly.
Fixes#646
As the Alpha channel is completely ignored and possibly destroyed by denoising algorithms, we should restore the Alpha channel manually. Linear interpolation was chosen here as it will behave like Point if the size matches, and properly interpolate if the size doesn't match.
Fixes: #646
The previous name was too strict on what could be put into the effect, and would result in additional clutter in the Filter menu when we eventually decide to support other Upscaling methods than Super-Resolution networks.
Grouping properties by what they do improves the user experience as the user does not have to guess at what belongs to which part of the effect. Additionally toggleable groups automatically disable all child elements, so the user is not confused by them still being active.
While the long descriptions were useful, keeping the updated and translated is pretty much impossible. Technology moves fast and not everyone that translates the project knows a lot about technology.
Therefore the long descriptions have now been replaced with a button that opens the wiki page for the feature instead. This should drastically reduce the number of help cases, and improve the translation coverage at the same time.
There is hardly any reason for us to recalculate everything all the time. LUTs can cache the work once, and then re-use it every time necessary, drastically reducing the impact of Color Grading by almost 60% (on some GPUs even more). Additionally this fixes the negative gamma issue, which plagued the filter for a while.
In the future, once PR 4199 (https://github.com/obsproject/obs-studio/pull/4199) has been merged, we can cut away one intermediate rendering step currently required to make the effect work. Hopefully this will be with the 27.x release of OBS Studio.
Ignoring the data parameter during initialization results in duplication and some third party plugins not working as expected, so it's better to not ignore it.
Fixes#315
