Cycles OptiX: Deleting a active OSL node causes issues #104157

New Issue

Alaska · 2023-01-26T19:49:43+01:00

Alaska commented

2023-01-26 19:49:43 +01:00

System Information
Operating system: Windows-10-10.0.22000-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 4090/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 528.24

Blender Version
Broken: version: 3.5.0 Alpha, branch: master, commit date: 2023-01-26 00:06, hash: c1beaea80f
Worked: Not sure

Short description of error
When using OptiX Open Shading Language (OSL), and the user deletes a active OSL node while viewport rendering is active causes issues. The issues that occur differ between platforms.

On Windows, the viewport render stops working and needs to be restarted. On Linux a illegal address error message appears.

Exact steps for others to reproduce the error

Open Blender.
Change the render engine to Cycles.
Change the rendering device to GPU Compute with OptiX as your rendering backend (Requires a OptiX compatible GPU)
Enable Open Shading Language.
Enter the rendered viewport, and in a material of a active object, add a OSL script and connect it to the material output.
Delete the OSL script node and notice issues in the viewport render. On Windows the viewport render stops. On Linux an error is encountered.

Here is an example of the issue on Windows:
OptiX OSL deleting shader issue - Windows.mp4

**System Information** Operating system: Windows-10-10.0.22000-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 4090/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 528.24 **Blender Version** Broken: version: 3.5.0 Alpha, branch: master, commit date: 2023-01-26 00:06, hash: `c1beaea80f` Worked: Not sure **Short description of error** When using OptiX Open Shading Language (OSL), and the user deletes a active OSL node while viewport rendering is active causes issues. The issues that occur differ between platforms. On Windows, the viewport render stops working and needs to be restarted. On Linux a `illegal address` error message appears. **Exact steps for others to reproduce the error** 1. Open Blender. 2. Change the render engine to Cycles. 3. Change the rendering device to GPU Compute with OptiX as your rendering backend (Requires a OptiX compatible GPU) 4. Enable Open Shading Language. 5. Enter the rendered viewport, and in a material of a active object, add a OSL script and connect it to the material output. 6. Delete the OSL script node and notice issues in the viewport render. On Windows the viewport render stops. On Linux an error is encountered. Here is an example of the issue on Windows: [OptiX OSL deleting shader issue - Windows.mp4](https://archive.blender.org/developer/F14201070/OptiX_OSL_deleting_shader_issue_-_Windows.mp4)

Alaska commented

2023-01-26 19:49:43 +01:00

Added subscriber: @Alaska