Editor Crashes when Isolating a Material Element on Skeletal Meshes with Ray Tracing Enabled

Rendering - Ray Tracing - Jul 3, 2019

With ray tracing turned on, clicking on the isolate material option next to a material slot on a skeletal mesh with more than one material slot, causes the editor to crash. Found in 4.22 CL# 7053647 ...

lots of wasted Volumetric lightmap samples

Rendering - Ray Tracing - Jun 20, 2019

Expectations: The samples should only surround the lightmass importance volumes.  Imagine if we build a 8K*8K map with lightmap importance volume at the corners of the map, even using stream levels ...

Random Scene Objects are not being rendered in Raytraced Reflections in packaging builds.

Rendering - Ray Tracing - Jun 11, 2019

Each time the build is run, different assets are missing in the reflections. Found in 4.22 CL# 6574378 and 4.23 CL# 6925347 ...

Ray Traced Reflections Get Darker The Higher The Rougness Value is for Metallic Materials

Rendering - Ray Tracing - Jun 11, 2019

Instead of reflecting an average color of the surrounding, reflections become black with increased roughness values. Found in 4.22 CL# 6574378 and 4.23 CL# 6925347 ...

Crash on RTX Laptop with ray tracing and -d3ddebug

Rendering - Ray Tracing - May 1, 2019

Editor is crashing with d3ddebug in ray tracing Does not occur in dx12 without ray tracing Does not occur on a desktop PC with a 2080 Does not occur without d3ddebug ...

Black Lines on Meshes with Ray Traced Global Illumination Enabled

Rendering - Ray Tracing - Apr 22, 2019

Black Lines on Meshes with Ray Traced Global Illumination Enabled.  Found in 4.22 CL# 5660361 and 4.23 CL# 6037269 ...

Large Amount of Aliasing in Ray Traced Reflections

Rendering - Ray Tracing - Apr 9, 2019

There is a large amount of aliasing on ray traced reflections. The reflections look as expected until you zoom in on the sphere (press Z or C to zoom in/out). The reflections become very noticeably ...

Refraction of Ray Traced Translucency in Path Trace View is Incorrect

Rendering - Ray Tracing - Apr 8, 2019

Refraction of Ray Traced Translucency in Path Trace View is Incorrect. Found in 4.22 CL# 5660361 and 4.23 CL# 5779284 ...