Unreal Engine 4.23 Preview

[Albertdup]

Anyone able to find where the

New Pro Video Codecs

are hiding? It's really irritating that the AVI, Motion JPEG is interlaced.

[maxbrown]

* Go apps render black (multi-view + multi-view direct) Anyone else noticing those?

Same black screen on Quest - https://issues.unrealengine.com/issue/UE-77549

[theProfessor]

Hello
In 4.23 P2, I can't find Geometry Collection in Physics menu.

I second this bug. Can't find "Geometry Collection" in Physics menu. Makes Chaos difficult. What about it VictorLerp?

[Daffrendo]

The preview builds are expected to have issues from all the sub-streams or branches of development teams coming together for a release. There is always some stabilization and fallout from the copy-up merging of all these branches together that has to be resolved and tested. These builds are part of our QA process to stabilize and catch issues before release. Having the community use them earlier in our process by having a lot of previews helps call out issues or edge cases we may have missed otherwise and it lets anyone who wants to try things out earlier get that first look.

With each release, we post the preliminary highlighted features for that release so that everyone is aware of what's coming and they can start to try them out. For instance, Chaos is a big feature for this release, but it's not the only thing we're looking for feedback or bug reports on. Ray Tracing was released as "Beta" in 4.22 with the acknowledgement that there is still a lot of work to do. This release sees a number of improvements not only in stability but in some feature support for different geometry types and material types. RTGI is still very expensive and our devs are continually working to improve its performance but that too will take time.

All that being said, if you find issues, please report them! Even if you're not sure they are a bug or lack of implemented feature or it's a difference from previous release in how it works/looks that we've not intentionally called out, please report it. Our teams will investigate and be sure so that we can get fixed if it is a bug and if it's not we'll try to provide context where possible.

Daffrendo thanks for taking the time to try out the preview builds and report any issues you find. It really is appreciated and helps make a better release when it gets here!

So, will be fixed next release - yes?
Can you put your finger on the scale for us, we would like to see the basic Raytracing pieces not break-down as features are rolled out.
THX Tim !

[VictorLerp]

I second this bug. Can't find "Geometry Collection" in Physics menu. Makes Chaos difficult. What about it VictorLerp?

Can you verify that the plugin is enabled? There seems to be an issue when using Github Desktop to clone the repository - it doesn't pull all of the plugins related to Chaos. If this is the case, download the .zip instead of cloning. We're working on figuring out why this is the case!

[theProfessor]

Can you verify that the plugin is enabled? There seems to be an issue when using Github Desktop to clone the repository - it doesn't pull all of the plugins related to Chaos. If this is the case, download the .zip instead of cloning. We're working on figuring out why this is the case!

I did get P2 compiled. The plugin is enabled. When I ran the editor it about 15 minutes to load. 5 hours to compile. Still no geometry container.

[dorklord_666]

Hey Unreal -- can you guys give some love to Sequencer?

1- Attach doesn't seem to behave properly. Transform changes drastically and none of the settings seem to help.
2- Scrubbing doesn't always reset the position of animations properly.
3- Alembic Geo Cache in Sequence is broken

Thanks.

[duke22]

I'm relocating countries at the moment and I can't investigate further, however it seems VT are boned. You can convert existing textures, and change the samplers in the materials accordingly, however theres either a memory leak or something isn't being flushed because memory usage skyrockets during conversion. While working on a large project with satellite data I had to be careful about how many I was converting in any given Editor session otherwise my system (with 128gb RAM) would just hang (I left it overnight to check, it doesn't get better). Additionally, when loading a level using them the same issue occurs with memory usage, although generally it will just crash.

As a test case i'd recommend converting the Kite Demo to use VT, or simply duplicate an 8k texture 1000 or so times and try converting them.

[Amanda.Schade]

UPDATE!

We have just released Preview 3 for 4.23! Thank you for your continued help in testing the 4.23 build before its official release. As a reminder, the Preview builds are for testing only, and should not be used for the active development of your project.

For a list of known issues affecting this latest preview, please follow the links provided on the original post in this thread.

Fixed in Preview 3
Fixed! UE-66234 Skeletal Mesh Ref Skeleton can be built before Skeleton has finished loading, meaning it misses Virtual Bones
Fixed! UE-74471 Audio: Concurrency: Sine Tone is heard after canceling Resolution Rule Test
Fixed! UE-73383 No sounds are played while looking at the Focus Panels on AEOverviewMain
Fixed! UE-68482 Allow Cooked Content in Editor setting does not prompt restart
Fixed! UE-68486 Warning for Cooked Content in the Editor when project setting isn't enabled needs to be updated to new Project Setting
Fixed! UE-77539 Datasmith result numbers are wrong after import
Fixed! UE-77529 Fail to cook QAEnterprise.uproject - pin Config File Path no longer exists on node
Fixed! UE-77404 Project fails to packaged for Android when Enterprise is enabled
Fixed! UE-77324 Crash when executing dataprep graph
Fixed! UE-77007 Dataprep - No warning when committing if last execute is out of sync with current pipeline graph
Fixed! UE-73260 Gear VR fails to launch packaged projects on a Device when Enterprise is enabled for the project
Fixed! UE-77445 Dataprep buttons' tooltips are too complex
Fixed! UE-73285 Cinema 4D - textures are not imported after project cleanup
Fixed! UE-74376 Cinema 4D - Cloned mesh gets renamed upon reimport.
Fixed! UE-77357 Loading sub-levels in KiteDemo Landscape causes navigation to build for hours
Fixed! UE-77376 Unable to add entries to a Blueprint Enumeration class
Fixed! UE-77301 Standalone game crash when playing a replay
Fixed! UE-73915 Geometry Collections ignore visible setting in PIE
Fixed! UE-75762 Strike nodes seem to be broken.
Fixed! UE-64476 Investigate when XGE is enabled that Windows to Linux Launch-On fails with errors: non-portable path to file
Fixed! UE-76246 TVOS is disabled in installed engine build
Fixed! UE-67565 Fix Arm7 / Arm64 versioning
Fixed! UE-75617 ShaderCompileWorker crashes when FORCE_USE_STAT is set
Fixed! UE-77233 GitHub 6032 : Fixes to AmbientOcclusion calculation in Screen Space Diffuse Indirect
Fixed! UE-48123 Sobol random material function repeating over a 16-cell domain instead of expected 256
Fixed! UE-52761 Crash when BP_LightStage SkyLight Cubemap Resolution changed by spinning value
Fixed! UE-77247 Niagara Mesh Particles do not face camera when using Camera Position facing mode
Fixed! UE-76515 Implement D3D12 resource deletion using fine grained GPU synchronization
Fixed! UE-75157 Applying multiple stored curves to one curve causes unusual tangents
Fixed! UE-75672 Activating a channel that has been deactivated puts the channel at the bottom of the list
Fixed! UE-77408 Warning occurs when changing image format from video format to image format
Fixed! UE-76981 Ensure undoing adding an object to folder in sequencer
Fixed! UE-76713 Converted sequence from matinee has a binding for each animated property
Fixed! UE-76482 Opening Cascade then Sequencer causes major Editor lag
Fixed! UE-77400 Sequencer audio section StartOffset data will be lost due to deprecation without UPROPERTY() macro
Fixed! UE-76299 Entering Cinematic Viewport doesn't enable Game View
Fixed! UE-76485 If the user had the blueprint editor over the level viewport, clicking the hyperlink on the blueprint compile errors on PIE window will block input on the message buttons
Fixed! UE-74195 Fill Data Table from CSV File crashes editor if the data table is open
Fixed! UE-77157 Wrong translation and rotation of isolated meshes imported into Level from a USD file
Fixed! UE-77058 Localized characters not showing up in UMG text fields
Fixed! UE-77421 Material Hierarchy dialog contains no default message in Material Instances with no Parent
Fixed! UE-69606 Simple collisions are regenerated each time the mesh editing tool is used
Fixed! UE-77465 Multi-User Clients synced to the same CL in UGS can have incompatible versions
Fixed! UE-77134 Replace Multi-User Editing Toolbar button with updated graphic
Fixed! UE-77451 Adding an Output to a Blueprint Function hides the Outputs section
Fixed! UE-77377 Post Process Volume Color Grading UI is not exposed in PPE Details Panels
Fixed! UE-77332 Mesh Editor plugin enabled by default in Studio project
Fixed! UE-77242 Collaborative Viewer - Changing Navigation technique change all name to host name
Fixed! UE-73466 Virtual Camera Game Mode sets slate to Scene_1 after entering PIE
Fixed! UE-77394 Looping Media Output Warning: PingPong: No frames are available | when closing the game session while the video output is up
Fixed! UE-77138 ScoutFlareNew and VirtualProductionHelpers compile with errors - "Editor Subsystems can only be used in Editor Utilities / Blutilities"
Fixed! UE-77525 late feature nDisplay warp & blend support
Fixed! UE-76353 [LiveLink Backward compatibility] - Enable Camera Sync show the camera missplaced.
Fixed! UE-69536 Resolution appears incorrect when using Windows Mixed reality Simulator
Fixed! UE-77565 HoloLens 2 packaging fails if the project directory is renamed
Fixed! UE-77564 HoloLens 2 doesn't support speech when remoting
Fixed! UE-77488 WMR HMD worn state events not enabled
Fixed! UE-77486 Re-enable SQLite for HoloLens
Fixed! UE-77487 Partially installed SDK roots listed in HoloLens project configuration
Fixed! UE-77485 Apex cmakelist still referencing UWP instead of HoloLens
Fixed! UE-77369 Playing in VR Preview with GoogleVR results in a DynamicRHI.cpp ensure
Fixed! UE-76935 Minimum Sites Per Cluster slider has a higher cap than the Maximum Sites Per Cluster value

REMEMBER: Please report any new bugs you find by following the How To Report a Bug Guide

[dorklord_666]

Hi Amanda.Bott - could you please pass on the info that in Sequencer the Attach / Detach function has been broken since at least 2017? This feels like it should be a very basic function and I have no idea what it hasn't gotten any more attention.

Also if someone here can explain to me why the Event Track in Sequencer has become a huge convoluted mess to use, if there is any advantage to the recent change I'd love to know. Thanks!

[theProfessor]

What does mean "UE-73915 Geometry Collections ignore visible setting in PIE". When click on Physics I don't see geometry collections.

[remozseo]

Where to download? I can't find the Preview Download inside of the Epic Launcher, + Version ?

[VictorLerp]

What does mean "UE-73915 Geometry Collections ignore visible setting in PIE". When click on Physics I don't see geometry collections.

To use Chaos in 4.23 Preview you have to follow the steps outlined here.

Where to download? I can't find the Preview Download inside of the Epic Launcher, + Version ?

Click the + next to Engine:



In the dropdown of the newly added engine version, select 4.23.0 Preview:

[Leo Rakes]

The preview builds are expected to have issues from all the sub-streams or branches of development teams coming together for a release. There is always some stabilization and fallout from the copy-up merging of all these branches together that has to be resolved and tested. These builds are part of our QA process to stabilize and catch issues before release. Having the community use them earlier in our process by having a lot of previews helps call out issues or edge cases we may have missed otherwise and it lets anyone who wants to try things out earlier get that first look.

With each release, we post the preliminary highlighted features for that release so that everyone is aware of what's coming and they can start to try them out. For instance, Chaos is a big feature for this release, but it's not the only thing we're looking for feedback or bug reports on. Ray Tracing was released as "Beta" in 4.22 with the acknowledgement that there is still a lot of work to do. This release sees a number of improvements not only in stability but in some feature support for different geometry types and material types. RTGI is still very expensive and our devs are continually working to improve its performance but that too will take time.

All that being said, if you find issues, please report them! Even if you're not sure they are a bug or lack of implemented feature or it's a difference from previous release in how it works/looks that we've not intentionally called out, please report it. Our teams will investigate and be sure so that we can get fixed if it is a bug and if it's not we'll try to provide context where possible.

Daffrendo thanks for taking the time to try out the preview builds and report any issues you find. It really is appreciated and helps make a better release when it gets here!

Now it seems that the rendering part of 4.23 has become very bad, especially ray tracing.

Until the latest 4.23 Preview 3, RTGI was damaged, RT translucency was completely disabled, SSGI could not be combined with RT effect, LPV could not be combined with RT effect, which led to the only available GI effect under RT Shadow was RTGI, but its performance was so bad. Many parts of ray tracing look terrible, even worse than 4.22.3.

The only consolation is that we have seen support for these categories of HISM and Ladnscape, but we still don't know when these rendering problems will be solved.

[Tim Hobson]

Now it seems that the rendering part of 4.23 has become very bad, especially ray tracing.

Until the latest 4.23 Preview 3, RTGI was damaged, RT translucency was completely disabled, SSGI could not be combined with RT effect, LPV could not be combined with RT effect, which led to the only available GI effect under RT Shadow was RTGI, but its performance was so bad. Many parts of ray tracing look terrible, even worse than 4.22.3.

The only consolation is that we have seen support for these categories of HISM and Landscape, but we still don't know when these rendering problems will be solved.

If you've not already, please report any issues you find that have regressed or are "bugged" from intended or expected behavior so they can be properly investigated and reported where possible.

As for LPV and SSGI, these are both experimental and unsupported features. SSGI is not yet ready for production and is not a feature we're focused on marketing or calling out for the 4.23 life-cycle. It's expected to be ready for 4.24, so expect to run into issues and incompatibility with other features.

For LPV, this is not an actively developed feature and any regressions are expected since we've been doing a lot of changes in rendering lately. These may or may not be resolved in a future release. It's not a feature being actively developed by our Rendering teams.