Unreal Engine Issues

Modulate Blend Mode on Deferred Decals does not seem to multiply with background pixels

Modulate Blend Mode on Deferred Decals does not blend multiply with background pixels. Transparency for Deferred Decals also does not seem to match with what occurs in 4.27; Repro Rate: 4/4 Tested ...

Custom UVs don't store information properly in layered materials.

[Link Removed] I have this set up so that FX artists can stack UV manipulations, so I don't want to just have all the UV manipulation in the layer with the base color, even though that does give me ...

Display: Missing cached shadermap for Preview:<MaterialName> in PCD3D_SM5, Default, SM5

When applying a Landscape Layer Blend of textures to the Material Base Color, the preview does not update or shows black instead of how the material is supposed to look. When you disconnect the lay ...

Scrubbing material roughness value in MI causes large frame drops

Significant Refraction Differences between 4.27 and 5.0

Crash when null texture parameter is present on a MIC

From UDN: [Link Removed] Proposed fix: int32 FHLSLMaterialTranslator::TextureParameter(FName ParameterName, UTexture* InDefaultValue, int32& TextureReferenceIndex, EMaterialSamplerType SamplerType ...

Distance Cull Fade Node on Material does not work with Skeletal Mesh

The licensee reports that this issue is caused by the following code not performing a Buffer update. .\Engine\Source\Runtime\Renderer\Private\ShaderBaseClasses.cpp void FMeshMaterialShaderElementD ...

An Assertion is thrown when connecting a Vertex Interpolator nod to PerInstanceCustomData node to the Result node

Assertion is thrown when connecting a Vertex Interpolator nod to PerInstanceCustomData node to the Result node. ...

Assertion thrown when connecting a World Position node to the time input of a Panner node then connecting it to Base Color

Assertion thrown when connecting a World Position node to the time input of a Panner node then connecting it to Base Color. This is a regression. ...

Layer's preview weight does not have an affect on the Preview Material for Landscape Layer Blend nodes

Layer's preview weight does not have an affect on the Preview Material for Landscape Layer Blend nodes. Repro Rate: 3/3 Tested this in //UE4/Release-4.27 @ CL#18319896 and the preview window did g ...