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Optix 8 abi bump #1480

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Optix 8 abi bump #1480

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njroussel
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@njroussel njroussel commented Jan 30, 2025

Description

This PR is part of a series to upgrade to OptiX 8.0:

It introduces the following changes:

  • Update of OptiX interfaces and structs
  • Simplification to submission of programs to OptiX pipeline
  • Changes to OptixDenoiser interface

⚠️ NOTE: The resources/data submodule must be updated prior to merging this PR.

Testing

No new tests were added. Tests for OptixDenoiser were updated due to the new interface.

The previous code would submit them all even if the pipeline only used a subset of them. In theory, that should not matter. However, OptiX 8.0 flags that as a potential issue when the validation layer is enabled.
This commit also update the `resources/data` submodule which holds the references for the OptiX denoiser tests
@njroussel njroussel added the enhancement New feature or request label Jan 30, 2025
@merlinND
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Hi @njroussel,

Does this API bump change the minimum supported driver version? (Just to make sure that it is documented and checked at runtime).

@wjakob
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wjakob commented Jan 31, 2025

Just to make sure that it is documented and checked at runtime

There is an error message in Dr.Jit-Core when OptiX is first used. But the Mitsuba documentation likely needs an update.

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wjakob commented Jan 31, 2025

This looks great. For posterity, can you explain the simplification?

Simplification to submission of programs to OptiX pipeline

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