Description

User is reporting grass at the edge of their landscape being generated floating in the air on a Mac Pro with AMD GPUs.

I have been unable to repro this on my Mac Mini with Intel Graphics HD 4000.
QA could not repro on an MBP with Intel Graphics

Note the user reported this with a launcher build of 4.8 preview 2 but using a fixed LandscapeGrassWeight.usf file that was required to fix [Link Removed]. A Mac build after CL 2549532 should be used to try to repro.

Steps to Reproduce

Open the Editor with the attached project on either
Mac running a 4.8 build after CL 2549532 or
Windows PC running an AMD graphics card and launched with -opengl

Run the console command "grass.flushcache"
Wait for shaders to compile and grassmaps to generate

A few floating instances are reported to appear at the edge of the map (see screenshot)

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Fixed
ComponentUE - Rendering
Affects Versions4.8
Target Fix4.8
Fix Commit2554871
Release Commit2555247
CreatedMay 15, 2015
ResolvedMay 18, 2015
UpdatedApr 27, 2018