‘OptiX’ option is missing in ‘Cycles Render Devices’ in Preferences in Blender 3.0. #93901

New Issue

Lalit Kumar · 2021-12-09T14:12:37+01:00

Lalit Kumar commented

2021-12-09 14:12:37 +01:00

System Information
Operating system: Linux-5.15.6-2-MANJARO-x86_64-with-glibc2.33 64 Bits
Graphics card: NVIDIA GeForce GTX 1660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 495.44

Blender Version
Broken: version: 3.0.0, branch: makepkg (modified), commit date: 2021-12-02 18:35, hash: f1cca30557
Worked: version: 2.93.6

Short description of error
‘OptiX’ option is missing in ‘Cycles Render Devices’ in Preferences in Blender 3.0.

Exact steps for others to reproduce the error

Hi, I’ve a desktop computer with following specs:

CPU: i7-3770K
RAM: 16gb
GPU: NVIDIA GeForce GTX 1660 Ti with 6gb VRAM
GPU Architecture: Turing
GPU Compute Capability: 7.5
Operating System: Manjaro Linux 21.2
Desktop Environment: KDE Plasma 5.23.4
Linux Kernel version: 5.15.6
NVIDIA graphics driver version: 495.44-6
CUDA version: 11.5.1-1
Blender version: 3.0

The issue is ‘OptiX’ is missing in ‘Cycles Render Devices’ in Preferences > System in Blender 3.0, whereas the same was present in Blender 2.9x series on my system (see screenshot).

{F12719924, size=full}

My NVIDIA GeForce GTX 1660 Ti GPU has a compute capability of 7.5 which is more than 5.0, the minimum required for OptiX support for Cycles in Blender.

Interestingly in the list given at https://developer.nvidia.com/cuda-gpus#compute, ‘GeForce GTX 1660 Ti’ GPU is missing whereas ‘GTX 1650 Ti’ is present.

As OptiX is way faster than CUDA, especially in Viewport rendering with OptiX denoiser, I hope Blender developers will look into this and provide OptiX support for Cycles in Blender 3.x series for ‘GTX 1660 Ti’ users.

Thanks.

[Based on the default startup file]

**System Information** Operating system: Linux-5.15.6-2-MANJARO-x86_64-with-glibc2.33 64 Bits Graphics card: NVIDIA GeForce GTX 1660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 495.44 **Blender Version** Broken: version: 3.0.0, branch: makepkg (modified), commit date: 2021-12-02 18:35, hash: `f1cca30557` Worked: version: 2.93.6 **Short description of error** ‘OptiX’ option is missing in ‘Cycles Render Devices’ in Preferences in Blender 3.0. **Exact steps for others to reproduce the error** Hi, I’ve a desktop computer with following specs: CPU: i7-3770K RAM: 16gb GPU: NVIDIA GeForce GTX 1660 Ti with 6gb VRAM GPU Architecture: Turing GPU Compute Capability: 7.5 Operating System: Manjaro Linux 21.2 Desktop Environment: KDE Plasma 5.23.4 Linux Kernel version: 5.15.6 NVIDIA graphics driver version: 495.44-6 CUDA version: 11.5.1-1 Blender version: 3.0 The issue is ‘OptiX’ is missing in ‘Cycles Render Devices’ in Preferences > System in Blender 3.0, whereas the same was present in Blender 2.9x series on my system (see screenshot). {[F12719924](https://archive.blender.org/developer/F12719924/3.0_Cycles_Render_Devices_-_OptiX_missing_for_GTX_1660_Ti.png), size=full} My NVIDIA GeForce GTX 1660 Ti GPU has a compute capability of 7.5 which is more than 5.0, the minimum required for OptiX support for Cycles in Blender. Interestingly in the list given at https://developer.nvidia.com/cuda-gpus#compute, ‘GeForce GTX 1660 Ti’ GPU is missing whereas ‘GTX 1650 Ti’ is present. As OptiX is way faster than CUDA, especially in Viewport rendering with OptiX denoiser, I hope Blender developers will look into this and provide OptiX support for Cycles in Blender 3.x series for ‘GTX 1660 Ti’ users. Thanks. [Based on the default startup file]

Lalit Kumar commented

2021-12-09 14:12:37 +01:00

Added subscriber: @Lalit_K

Thomas Dinges commented

2021-12-09 14:17:36 +01:00

Added subscriber: @ThomasDinges

Thomas Dinges commented

2021-12-09 14:17:36 +01:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Thomas Dinges commented

2021-12-09 14:17:36 +01:00

Hi, where do you got the 3.0 build from? Is it the official one from blender.org? If you got it from some third party repository, please download and verify the problem with an official build.

Brecht Van Lommel commented

2021-12-09 15:17:11 +01:00

Added subscriber: @brecht

Brecht Van Lommel commented

2021-12-09 15:17:11 +01:00

Changed status from 'Needs User Info' to: 'Archived'

Brecht Van Lommel closed this issue

2021-12-09 15:17:11 +01:00

Brecht Van Lommel commented

2021-12-09 15:17:11 +01:00

The makepkg branch indicates that this is an Arch package, which we do not maintain. Official builds should work.

There is a known issue here, NVIDIA needs to the newer OptiX headers available on a public server for Arch to be able to build with OptiX enabled. We are in contact with them about that.

The `makepkg` branch indicates that this is an Arch package, which we do not maintain. Official builds should work. There is a known issue here, NVIDIA needs to the newer OptiX headers available on a public server for Arch to be able to build with OptiX enabled. We are in contact with them about that.

Lalit Kumar commented

2021-12-09 15:47:52 +01:00

Hi Thomas and Brecht,

As you probably know, Manjaro is a popular Arch based Linux distro.

Manjaro maintains three Official package branches: Unstable, Testing, and Stable. Packages from Arch repos are first pulled into the Unstable branch. From there they are pushed to Testing branch for testing and bug fixing. From there they’re pushed to Stable branch and to the end users as system updates. Usually it takes 2 to 3 weeks (sometimes more) for most packages to pass through from Unstable to Stable branch and to the end user.

As you can see in the screenshots, Blender 3.0 isn’t in the Manjaro Stable branch yet, so I switched to the Manjaro’s Testing Branch to test and use latest Blender 3.0, and found this OptiX issue.

{F12720833, size=full}

Hi Thomas and Brecht, As you probably know, Manjaro is a popular Arch based Linux distro. Manjaro maintains three Official package branches: Unstable, Testing, and Stable. Packages from Arch repos are first pulled into the Unstable branch. From there they are pushed to Testing branch for testing and bug fixing. From there they’re pushed to Stable branch and to the end users as system updates. Usually it takes 2 to 3 weeks (sometimes more) for most packages to pass through from Unstable to Stable branch and to the end user. As you can see in the screenshots, Blender 3.0 isn’t in the Manjaro Stable branch yet, so I switched to the Manjaro’s Testing Branch to test and use latest Blender 3.0, and found this OptiX issue. {[F12720833](https://archive.blender.org/developer/F12720833/3.0_Cycles_Render_Devices_-_OptiX_missing_for_GTX_1660_Ti-02.png), size=full}

Thomas Dinges commented

2021-12-09 16:51:40 +01:00

Hi Lalit,
as Brecht explained, the issue is on the Arch package side, we cannot fix this from our side. You can download Blender from blender.org or wait until the issue is resolved on the Arch side. :)

Hi Lalit, as Brecht explained, the issue is on the Arch package side, we cannot fix this from our side. You can download Blender from blender.org or wait until the issue is resolved on the Arch side. :)

Lalit Kumar commented

2021-12-09 17:11:52 +01:00

Hi Thomas,

I'm downloading and will install official Blender 3.0 installer on blender.org on Windows 10, and see if OptiX option show up on my hardware there or not. I'll share my findings shortly. Thanks.

Hi Thomas, I'm downloading and will install official Blender 3.0 installer on blender.org on Windows 10, and see if OptiX option show up on my hardware there or not. I'll share my findings shortly. Thanks.

Lalit Kumar commented

2021-12-10 04:15:51 +01:00

Hi Thomas,

Yes, OptiX is available in Preferences for GTX 1660 Ti GPU in Blender 3.0 on Windows 10.

So as Brecht explained, I hope NVIDIA and Arch devs / maintainers to work it out soon for Arch-based distro users to be able to use OptiX in Blender 3.0 on machines with GTX 1660 Ti cards. Thanks.

Hi Thomas, Yes, OptiX is available in Preferences for GTX 1660 Ti GPU in Blender 3.0 on Windows 10. So as Brecht explained, I hope NVIDIA and Arch devs / maintainers to work it out soon for Arch-based distro users to be able to use OptiX in Blender 3.0 on machines with GTX 1660 Ti cards. Thanks.

Stefan Brüns commented

2022-07-16 12:15:49 +02:00

Added subscriber: @Stefan-Bruns

Stefan Brüns commented

2022-07-16 12:15:49 +02:00

Note this is an issue which can only be solved by NVidia, they have to change the license of the required OptiX headers (only the headers, not the SDK) to something compatible with blenders GPL-2.0 license.

Currently, no distribution (Arch, openSUSE, Fedora, Debian and derivatives ...) can legally distribute a binary blender build incorporating OptiX. As blender is GPL-2.0 licensed, distributions have to provide all sources, including the OptiX header files. Redistributing the latter is strictly forbidden by NVidias license (only allowed redistribution is as part of a binary).

Note this is an issue which can **only** be solved by NVidia, they have to change the license of the required OptiX headers (only the headers, not the SDK) to something compatible with blenders GPL-2.0 license. Currently, no distribution (Arch, openSUSE, Fedora, Debian and derivatives ...) can legally distribute a binary blender build incorporating OptiX. As blender is GPL-2.0 licensed, distributions **have to** provide **all** sources, including the OptiX header files. Redistributing the latter is strictly forbidden by NVidias license (only allowed redistribution is as part of a binary).

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

‘OptiX’ option is missing in ‘Cycles Render Devices’ in Preferences in Blender 3.0. #93901