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FEATURES.md

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High-level description of some of the OSPRay Studio features.

Studio provides a thin wrapper on top of the OSPRay API, as such, the rendering features are better described in the, excellent, OSPRay documentation (https://www.ospray.org/documentation.html)

OBJ/MTL importer:

  • native triangle mesh and quad mesh primitives
  • basic OBJ materials, with extension for any OSPRay material via "type" keyword
  • texture and "texture transformations" supported on all OSPRay texturable material parameters via "map_" parameter prefix
  • support for UDIM texture tiles with common "1001" filenaming convention

glTF importer:

  • mesh and points primitives, vanilla materials, animation (including camera), skinning
  • KHR_lights_punctual: "directional", "point", "spot"; custom extension for OSPRay's "hdri" light type
  • INTEL_lights_sunsky
  • KHR_materials_emissive_strength: "intensity"
  • KHR_materials_pbrSpecularGlossiness: "diffuseFactor", "diffuseTexture", "specularFactor", "glossinessFactor"
  • KHR_materials_clearcoat: "clearcoatFactor", "clearcoatRoughnessFactor", "clearcoatTexture", "clearcoatRoughnessTexture", "clearcoatNormalTexture"
  • KHR_materials_transmission: "transmissionFactor", "transmissionTexture"
  • KHR_materials_sheen: "sheenColorFactor", "sheenColorTexture", "sheenRoughnessFactor", "sheenRoughnessTexture"
  • KHR_materials_ior: "ior"
  • KHR_materials_volume: "thicknessFactor", "thicknessTexture", "attenuationDistance", "attenuationColor"
  • KHR_materials_specular: "specularFactor", "specularTexture"
  • KHR_texture_transform: "offset", "rotation", "scale"
  • BIT_scene_background: "background-uri", "rotation"
  • BIT_asset_info: "title"
  • BIT_reference_link: "id", "title"
  • BIT_node_info: "id"
  • EXT_cameras_sensor, respecting
    • "imageSensor": "pixels", "pixelSize"
    • "lens": "focalLength", "apertureRadius", "focusDistance", "centerPointShift"
  • support for UDIM texture tiles with common "1001" filenaming convention

PCD importer:

Volume rendering:

  • importers for raw structured, raw spherical, particle volumes, and OpenVDB file formats
  • scenegraph support to structure, unstructured, particle volumes, and vdb data formats
  • controls for transfer functions and implicit iso-surfaces, as supported by OSPRay and OpenVKL

Meta data export, using plugin "metadata" via ospStudio batch -p metadata -m ...:

  • in exr: id (instanceID), objectID, depth, worldPosition
  • ID maps in prefix.id.json and prefix.objectId.json
  • 3D bounding boxes in prefix.bboxId.json

batch mode:

  • scriptable headless rendering for offline images
  • setting animation speed (fps)
  • selecting frames (sub-range) to be rendered
  • selecting camera (if multiple specified in glTF)
  • selecting scene configuration from command line
  • setting rendering parameters (maxContribution, accumLimit, variance)

python bindings:

  • the scene graph is exposed via pybind11 binding for full scriptable support

JSON scene file format:

  • the scenegraph state may loaded/saved to a JSON file

Extendable via plugins:

  • plugin mechanism allows extension of file importer, scene graph internals, and UI widgets/appearance
  • several of the plugins under development are featured on the website