Altus Linux/Windows standalone plugins are designed for users with custom rendering systems or pipelines that can generate the AOVs (arbitrary output variable) that Altus expects as inputs. Please refer to the corresponding readme file on the Support -> Documentation page for the exact list of AOVs that Altus expects. The only pre-requisite for Altus Linux/Windows executable is OpenCL needs to be running on the system that Altus is installed. All Altus Linux/Windows downloads come free with a watermark for evaluation purposes. Please visit the product purchase options page to purchase the licensed, watermark-free version of the product.