2026-10-07 16:38 UTC

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IDProjectCategoryView StatusLast Update
0004628Zandronum[All Projects] Bugpublic2026-09-05 18:40
ReporterRusselCS 
Assigned To 
PrioritynormalSeveritycrashReproducibilityalways
StatusnewResolutionopen 
Product Version3.2.1 
Target VersionFixed in Version 
Summary0004628: Software mode: crash when trying to render voxel and semitransparent 3D floor at the same time
DescriptionWhen attempting to render on top of the player, and a semitransparent 3d floor at the same time, in software mode, the engine will sometimes encounter a divide by zero error and fully crash.
Steps To Reproduce1. Load attached wad.
2. Boot Zandronum in software mode.
3. Ensure r_drawvoxels is true.
4. Ensure r_3dfloors is true.
5. Boot into MAP01 and do not press anything.

Player should be thrusted into the blue key, which will trigger a voxel to spawn and crash the game.
Additional InformationThis crash is not 100% consistent, but should occur at least once if attempted multiple times. The sample wad contains a script that spawns the voxel 10 times. On my machine, an arch linux running the latest 3.3 alpha, the crash happens every time I run this wad.
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-Issue History
Date Modified Username Field Change
2026-09-05 18:40 RusselCS New Issue
2026-09-05 18:40 RusselCS File Added: VoxelCrash-4.wad
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