Cycles: Enabling/disabling OSL changes the look of pre-existing shader nodes #108992
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Reference: blender/blender#108992
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System Information
Operating system: Windows-10-10.0.19045-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3090/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 528.49
Blender Version
Broken: version: 3.5.0, branch: blender-v3.5-release, commit date: 2023-03-29 02:56, hash:
1be25cfff18bWorked: (newest version of Blender that worked as expected)
Short description of error
I can't find much info on osl within blender. As i understand it, the point is to be able to write your own shaders with scripts, it shouldn't change the functionality of preexisting shader nodes.
Optix without OSL and CPU (with & without OSL) device renders darker droplets.
Exact steps for others to reproduce the error
In rendered view. Enable/disable OSL and see the water droplets look drasticly different (OSL looks more correct, but that should just be the default behavior then)
Enabling/disabling Open shading language changes the look of default shader nodesto Enabling/disabling Open shading language changes the look of preexsting shader nodesCan't replicate the issue on CPU (my device doesn't have a GPU right now), the problem is probably limited to GPU, on CPU it looks like whether enabling OSL or not, it renders as the "darker droplets" result. Changing light path settings doesn't seem to improve the situation either.
I can confirm the difference with Optix OSL
Guess the dark droplets are due to intersection with pool? (#96475)
On previous versions, CPU (with & without OSL) and GPU rendering results are bit different
Enabling/disabling Open shading language changes the look of preexsting shader nodesto Cycles: Enabling/disabling OSL changes the look of pre-existing shader nodes