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UnrealEngineUWP/Engine/Source/Developer/FunctionalTesting/Public
guillaume abadie b000ccbd8e Changes default screen percentage behavior in editor to take more advantage of TSR's upscaling behavior already enabled by default
1) Editor viewports now display at high DPI by default for better Gen5-console feeling in editor on high DPI monitors.

2) Realtime editor viewports now display at screen percentage based on the display pixel count. Fix screen percentage independent of the pixel range could either render not enough pixel at low display resolution or be too slow at high display resolution. Given the level editor viewport can scale in size based on editor user layout preference, monitor, the screen percentage automatically scalling based on display pixel count gives a better experience of quality consistency/GPU cost for rendering frame, especially when going level editor fullscreen with F11 or not. The curve to compute rendering resolution from display resolution is in BaseEngine.ini

3) Non-realtime editor viewports still display at a screen percentage based on OS DPI scale, independent of the display pixel count because use spatial upscaler and therefore need consistent sharpness not worst than editor fonts, but keep same rendering resolution as before to not increase out of GPU memory errors. The performance of potentially rendering at high resolution than a realtime viewport is ignored given the non real-time viewports are not rendering every frame.

4) PIE viewports now override r.ScreenPercentage by default to have consistent resolution quality and performance between realtime editor viewport and gameplay viewport by default without risk of introducing out of GPU memory errors loosing possibly unsaved editor work if the game's graphic settings default to a screen percentage higher. To advertise discoverability of this change, any update to the r.ScreenPercentage cvar will lead to a message display in console/log if overriden by editor settings or dynamic resolution settings.

5) As much as a project can change the default anti-aliasing method, can also configure on a per project basis the default screen percentage behavior in project preference that the editor user can then override locally for his/her own use with his editor settings. For instance mobile only or forward renderer MSAA only video games.

6) When working very high end work-in progress rendering tech project in a econemic context where lattest GPUs are hard to get, the range of GPU performance can vary greatly between contributor of the same projects. To provide more robustness for lowerend GPU of collegues with tech not yet scaling, the project settings now offer a MaxRenderingResolution for editor viewports that can also be overriden on a per user basis.

7) Automated screenshot already takes care of forcing r.ScreenPercentage.

#rb none
#preflight 61e58d4a873f2ea48f33facd

#ROBOMERGE-AUTHOR: guillaume.abadie
#ROBOMERGE-SOURCE: CL 18633512 in //UE5/Release-5.0/... via CL 18633532 via CL 18633538
#ROBOMERGE-BOT: UE5 (Release-Engine-Test -> Main) (v899-18417669)

[CL 18637384 by guillaume abadie in ue5-main branch]
2022-01-18 04:31:45 -05:00
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