Volumetric Lightmap Holes Appear Every Fifth Build

Rendering - Sep 11, 2018

Volumetric lightmap holes appear every fifth build.  Found in 4.19 CL# 4033788, 4.20 CL# 4302132, and 4.21 CL# 4348893 ...

Loading cooked shaders in editor is broken

Rendering - Sep 10, 2018

Issue was traced to CL4018267. Shader hashes are not preserved during cooking anymore. This is failing the check in void FShader::Register() { FShaderId ShaderId = GetId(); check(ShaderId.Materi ...

Debug Helpers no longer drawn indefinitely if life time is set to 0 or less

Rendering - Sep 10, 2018

Setting the lifetime for one of the visual debug helpers (a sphere was used in the repro, but the results should be similar for any of the debug helpers) to a value of 0 or less should make the debu ...

Support for 16-bit precision for positions in vertex buffer

Rendering - Sep 7, 2018

Add support for 16-bit per component format for POSITION in vertex buffers as an option. Half-precision is already supported for UVs and TANGENTS on a per model basis, and was hoping that this woul ...

Spawned actors with meshes become invisible in editor after changing level

Rendering - Sep 7, 2018

When moving actors spawned from within the editor to a new sublevel, their meshes stop rendering. However, if you open a new level then re-open the old level the meshes become visible again. You wil ...

Movable Point Lights Don't Cast Volumetric Shadows From Meshes Whose Materials Have Tesselation Enabled

Rendering - Sep 6, 2018

Point lights don't cast volumetric shadows from meshes with materials with tessellation, even if tessellation multiplier is 0.  Found in 4.19 CL# 4033788, 4.20 CL# 4302132, 4.21 CL# 4347190 ...

Directional Light Is Not Casting Shadows Past a Certain Point In Large Worlds On All Actors/Grass

Rendering - Sep 5, 2018

Directional light is not casting shadows past a certain point in large worlds on all actors/grass. In 4.19 CL# 4033788 shadows show up but not until the camera is very close to the object. 4.19 Pro ...

The results of Roughness=1.0 from a constant and from a parameter are different on 4.20.

Rendering - Sep 4, 2018

The results of Roughness=1.0 from a constant and from a parameter are different on 4.20. The static bool switch of the following material always returns 1.0. But the results are different.[Image Re ...

[CrashReport] UE4Editor_Engine!FStaticMeshSceneProxy::SetIndexSource() [staticmeshrender.cpp:679]

Rendering - Aug 31, 2018

No user comments in crash group 675 if ( bRequiresAdjacencyInformation ) 676 { 677 check( LODModel.bHasAdjacencyInfo ); 678 ***** OutElement.IndexBuffer = &LODModel ...

RotateVector Function Not Properly Rotating SkysphereTexture

Rendering - Aug 31, 2018

RotateAroundAxis Inside the RotateVector expects a normalized vector as rotation axis input, and that vector is not normalized. Once normalized it seems to work normally. Unable to test in 4.19 due ...