objects rendered black on repeated CUDA renders with 'persistent images' #85703

New Issue

Chris Eveleigh · 2021-02-16T17:15:52+01:00

Chris Eveleigh commented

2021-02-16 17:15:52 +01:00

System Information
Operating system: linux
Graphics card: RTX 2060

Blender Version
Broken: 2.93.0-7a608f88a713
Worked: 2.91.2

Short description of error
with "persistent images" selected, subsequent renders show all objects as black in Optix or CUDA cycles renders.

Exact steps for others to reproduce the error
open blender with default cube.
select cycles render engine.
select GPU device (in prefs make sure CUDA or Optix is selected).
in 'perfomance' select 'persistent images'.
F12 to render - succeeds.
F12 to render again produces a black cube.

**System Information** Operating system: linux Graphics card: RTX 2060 **Blender Version** Broken: 2.93.0-7a608f88a713 Worked: 2.91.2 **Short description of error** with "persistent images" selected, subsequent renders show all objects as black in Optix or CUDA cycles renders. **Exact steps for others to reproduce the error** open blender with default cube. select cycles render engine. select GPU device (in prefs make sure CUDA or Optix is selected). in 'perfomance' select 'persistent images'. F12 to render - succeeds. F12 to render again produces a black cube.

Chris Eveleigh commented

2021-02-16 17:15:52 +01:00

Added subscriber: @whyohme

Chris Eveleigh commented

2021-02-16 17:21:38 +01:00

in a more complex scene, comparing cycles debug output between a first and second render, these three lines are missing for the failed render:


[device_cuda_impl.cpp:885] Buffer allocate: __tri_shader, 882,888 bytes. (862.20K) in device memory
...
[device_cuda_impl.cpp:885] Buffer allocate: __tex_image_float4_014, 8,388,608 bytes. (8.00M) in device memory
[device_cuda_impl.cpp:885] Buffer allocate: __tex_image_byte4_015, 16,777,216 bytes. (16.00M) in device memory

in a more complex scene, comparing cycles debug output between a first and second render, these three lines are missing for the failed render: ``` [device_cuda_impl.cpp:885] Buffer allocate: __tri_shader, 882,888 bytes. (862.20K) in device memory ... [device_cuda_impl.cpp:885] Buffer allocate: __tex_image_float4_014, 8,388,608 bytes. (8.00M) in device memory [device_cuda_impl.cpp:885] Buffer allocate: __tex_image_byte4_015, 16,777,216 bytes. (16.00M) in device memory ```

Chris Eveleigh changed title from ~~black objects on repeated Optix renders with 'persistent images'~~ to objects rendered black on repeated CUDA renders with 'persistent images'

2021-02-17 09:05:22 +01:00

Philipp Oeser commented

2021-03-10 13:02:27 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2021-03-10 13:02:27 +01:00

Changed status from 'Needs Triage' to: 'Resolved'

Philipp Oeser closed this issue

2021-03-10 13:02:27 +01:00

Philipp Oeser self-assigned this 2021-03-10 13:02:27 +01:00

Philipp Oeser commented

2021-03-10 13:02:27 +01:00

I could reproduce in 7a608f88a7, but in 8618c4159c, this seems fine.

**System Information**
Operating system: Linux-5.10.19-200.fc33.x86_64-x86_64-with-glibc2.32 64 Bits
Graphics card: GeForce GTX 970M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 455.45.01
version: 2.93.0 Alpha, branch: master, commit date: 2021-03-06 16:54, hash: `rB8618c4159c7b`

So please try a fresh 2.93 build from https://builder.blender.org/download/

I have not hunted down the exact commit that fixed this, but will close as resolved.
(feel free to comment again though if issues persist in a fresh 2.93 build - we can always reopen in such case)

I could reproduce in 7a608f88a7, but in 8618c4159c, this seems fine. ``` **System Information** Operating system: Linux-5.10.19-200.fc33.x86_64-x86_64-with-glibc2.32 64 Bits Graphics card: GeForce GTX 970M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 455.45.01 version: 2.93.0 Alpha, branch: master, commit date: 2021-03-06 16:54, hash: `rB8618c4159c7b` ``` So please try a fresh 2.93 build from https://builder.blender.org/download/ I have not hunted down the exact commit that fixed this, but will close as resolved. (feel free to comment again though if issues persist in a fresh 2.93 build - we can always reopen in such case)

Chris Eveleigh commented

2021-03-13 12:49:41 +01:00

thanks so much for checking this and taking the time to reproduce as well! (sorry - I had been meaning to check newer builds myself). Can confirm 258b15da74 has the fix.

thanks so much for checking this and taking the time to reproduce as well! (sorry - I had been meaning to check newer builds myself). Can confirm 258b15da74 has the fix.

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objects rendered black on repeated CUDA renders with 'persistent images' #85703