Unreal Engine Issues

Atmosphere Sunlight shafts, artifacts, for both cascaded and virtual shadow maps.

Very large objects casting dynamic shadows on the sky atmosphere can lead to flickering (cascaded shadow maps) or square patterns (virtual shadow maps). ...

Nanite static mesh is still visible even if "Render in main pass" or "Render in depth pass" is used

Depth of field rendering artifacts - flickering and masking

Flickering and large flashes can be seen on reflective objects that are out of focus with DOF enabled. DumpGPU shows that artifacts are visible in TSR . ...

Specular/Anisotropy problems with Nanite Meshes

Specular highlights can disappear with clearcoat materials, when "Clear Coat Enable Second Normal" is enabled ("r.ClearCoatNormal"). ...

Groom shadows stay visible when component is hidden

This appears to happen with both Virtual Shadow Maps and Cascaded Shadow Maps. ...

Per instance custom data and Material Layers issue

Geometry collection marked as nanite has no fallback in cooked build when nanite is disabled

When geometry collection is set as nanite, there is no non-nanite render data cooked. This means that there is no fallback if the cooked build uses r.nanite 0. This used to work with some code worka ...

Difference in LODs between PIE and editor

It is possible to repo this without the exact steps, but that leaves it ambiguous if the camera moved when exiting PIE or not. ...

Light function broken on AMD GPUs

The licensee reported this happening on the following cards with the latest driver versions: ● RX 6600 ● RX 5700 The Licensee reported it did not happen on these cards: ● RX 580 ● Non-AMD cards Our ...

Incorrect cast in UpdateEarlyZPassModeCVarSinkFunction when Scene is FNULLSceneInterface

We have various casts across the engine on the scene, which fail to cast when the scene is a null scene. FScene* Scene = (FScene*)(World->Scene); Scene->UpdateEarlyZPassMode(); We shoul ...