Preview mode renders everything pitch black (possibly due to volume shaders) #84514
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Reference: blender/blender#84514
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System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: AMD Radeon HD 8870M ATI Technologies Inc. 4.5.13397 Core Profile Context 0
Blender Version
Broken: version: 2.90.1, branch: master, commit date: 2020-09-23 06:43, hash:
3e85bb34d0Short description of error
I'm doing the infamous donut tutorial and I have a scene of basically three components: the donut, the coffee and the countertop, all of them with their respective shaders. When I'm trying the preview mode, everything is rendered completely dark, meshes and environment alike.
Exact steps for others to reproduce the error
I have found that disabling the collections for my donut and my coffee cup, leaving only the countertop active, makes Preview work fine. My guess is that volume shaders cause the problem. Note that, both the icing of the donut and the coffee use volumetrics.
Blendonut 21010801 BUG REPORT 01 pack.blend
Added subscriber: @Parattata
Added subscriber: @rjg
Changed status from 'Needs Triage' to: 'Needs User Info'
I can't reproduce the issue on a system with a supported GPU and current graphics driver. Could you please save your system information (Help > Save System Info) and attach the file to your report?
Additionally, please open Blender's installation directory and double click on the
blender_debug_gpu.cmd. This will start Blender in debug mode and create log files. Try to make Blender fails to display the shader in the Material Preview mode. Once it does, close Blender. The Windows Explorer should open and show you up to two files, a debug log and the system information. Add them to your bug report by clicking on the upload button as shown in the screenshot below or via drag and drop.Thank you for looking into the problem. Here are the files you requested:
system-info.txt
blender_debug_output.txt
blender_system_info.txt
@Parattata Could you please check if the problem still occurs with updated graphics drivers and the current daily build of Blender 2.92 ?
So, I tried updating my graphics drivers, and as a result I've been struggling for a day. My computer would freeze and wouldn't install the latest AMD drivers. Eventually, I got my drivers from my manufacturer's (DELL) site. I believe they are not the latest out there, but I may be wrong. Still, I'm happy with the results. My viewport is actually rendering in Preview Mode! I'm posting a screenshot. I would like some feedback: do you believe what is depicted here is the result I should be expecting? My only concern is the crust on the top of the donut. There is a reflection node in the setup, so I guess EEVEE has a reason for projecting the surrounding world on it, but is that what it really should look like?
I also downloaded the 2.92 release. Preview Mode works just the same in both releases (the one I was using and 2.92).
I'm dropping a system info file too, just in case.
20210121 system-info.txt
blender_debug_output.txt
Thank you for taking the time to look into this matter.
Changed status from 'Needs User Info' to: 'Archived'
Yes, that looks correct. Glad that the driver updated fixed this for you. Since this was an issue with the graphics driver and not Blender, I'm closing this ticket as Invalid.