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Created by Bellimora Resident@white_rabbit_dxReporter

Objects well beyond draw distance (possibly drawdistance x2) cast shadows on the scene.

Summary

Objects well beyond draw distance cast shadows on the scene. My testing suggests this MIGHT be draw distance 2x but I can't be sure without more tests.

This is an ancient bug which predates EEP. I just keep forgetting about it until it happens to me and then I'm miffed.

This exists in non-alchemy viewers as well.

Steps to reproduce

  1. Go to a clear open sim where you have rez rights at elevation 0.
  2. Set windlight to noon.
  3. Set draw distance to 256
  4. Fly
  5. /gth 500
  6. Rez a 64 x 64 platform at your position
  7. /gth 0
  8. You are now in the shadow of a platform 500 meters above you.
  9. Set draw distance slightly closer, I used 224 because it was the next pip on the graphics slider.
  10. The shadow is now gone.

What is the current bug behavior?

See description

What is the expected correct behavior?

Objects 256 meters away should be casting shadows only.

Environment


Alchemy Test 6.4.18.46175 (64bit)
Release Notes

You are at 35.1, 223.9, 33.3 in Puff located at simhost-032d81328b794084c.agni
SLURL: http://maps.secondlife.com/secondlife/Puff/35/224/33
(global coordinates 183,587.0, 305,120.0, 33.3)
Second Life Server 2021-03-31.557694
Release Notes

CPU: AMD Ryzen 9 3900X 12-Core Processor             (3792.88 MHz)
Memory: 32683 MB
OS Version: Microsoft Windows 10 64-bit (Build 19042.928)
Graphics Card Vendor: ATI Technologies Inc.
Graphics Card: AMD Radeon RX 6800 XT

Windows Graphics Driver Version: 27.20.15003.5017
OpenGL Version: 4.6.148202 Compatibility Profile Context 21.3.2 27.20.15003.5017

Window size: 2560x1346
Font Size Adjustment: 96pt
UI Scaling: 1
Draw distance: 384m
Bandwidth: 3000kbit/s
LOD factor: 1.125
Render quality: 5
Advanced Lighting Model: Enabled
Texture memory: 3072MB
Texture cache: 4035MB / 8344MB (48.4% used)
Disk cache: 3039MB / 10240MB (29.7% used)

RestrainedLove API: RLV v3.4.3 / RLVa v2.4.0.46175
libcurl Version: libcurl/7.54.1 OpenSSL/1.0.2u zlib/1.2.11.zlib-ng WinIDN nghttp2/1.43.0
J2C Decoder Version: OpenJPEG Runtime: 2.4.0
Audio Driver Version: OpenAL, version 1.1 ALSOFT 1.21.0 / OpenAL Community / OpenAL Soft: OpenAL Soft
Dullahan: 1.7.0.202104081416
  CEF: 89.0.6+g6f30454+chromium-89.0.4389.72
  Chromium: 89.0.4389.72
LibVLC Version: 3.0.11
Voice Server Version: Vivox 4.10.0000.32327

Compiler Version: MSVC 192829913
Packets Lost: 4/3,105 (0.1%)
April 24 2021 09:04:30