Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Geometry Only
VP_PREVIEWHARDWARE_ONLY_GEOMETRY
Parameter: Workplane
VP_PREVIEWHARDWARE_DISPLAYFILTER_GRID
Parameter: World Grid
VP_PREVIEWHARDWARE_DISPLAYFILTER_BASEGRID
Parameter: World Axis
VP_PREVIEWHARDWARE_DISPLAYFILTER_WORLDAXIS
Parameter: Horizon
VP_PREVIEWHARDWARE_DISPLAYFILTER_HORIZON
Parameter: HUD
VP_PREVIEWHARDWARE_DISPLAYFILTER_HUD
Parameter: Null
VP_PREVIEWHARDWARE_DISPLAYFILTER_NULL
Parameter: Spline
VP_PREVIEWHARDWARE_DISPLAYFILTER_SPLINE
Parameter: Polygon
VP_PREVIEWHARDWARE_DISPLAYFILTER_POLYGON
Parameter: Generator
VP_PREVIEWHARDWARE_DISPLAYFILTER_GENERATOR
Parameter: Subdivision Surface
VP_PREVIEWHARDWARE_DISPLAYFILTER_HYPERNURBS
Parameter: Deformer
VP_PREVIEWHARDWARE_DISPLAYFILTER_DEFORMER
Parameter: Field
VP_PREVIEWHARDWARE_DISPLAYFILTER_FIELD
Parameter: Environment
VP_PREVIEWHARDWARE_DISPLAYFILTER_SCENE
Parameter: Camera
VP_PREVIEWHARDWARE_DISPLAYFILTER_CAMERA
Parameter: Light
VP_PREVIEWHARDWARE_DISPLAYFILTER_LIGHT
Parameter: Joint
VP_PREVIEWHARDWARE_DISPLAYFILTER_JOINT
Parameter: Particle
VP_PREVIEWHARDWARE_DISPLAYFILTER_PARTICLE
Parameter: Hair
VP_PREVIEWHARDWARE_DISPLAYFILTER_HAIR
Parameter: Guides
VP_PREVIEWHARDWARE_DISPLAYFILTER_GUIDELINES
Parameter: Other
VP_PREVIEWHARDWARE_DISPLAYFILTER_OTHER
Parameter: Axis
VP_PREVIEWHARDWARE_DISPLAYFILTER_OBJECTHANDLES
Parameter: Multi-Select Axes
VP_PREVIEWHARDWARE_DISPLAYFILTER_MULTIAXIS
Parameter: Handles
VP_PREVIEWHARDWARE_DISPLAYFILTER_HANDLES
Parameter: SDS Mesh
VP_PREVIEWHARDWARE_DISPLAYFILTER_SDS
Parameter: SDS Cage
VP_PREVIEWHARDWARE_DISPLAYFILTER_SDSCAGE
Parameter: N-gon Lines
VP_PREVIEWHARDWARE_DISPLAYFILTER_NGONLINES
Parameter: Animation Path
VP_PREVIEWHARDWARE_DATA_SHOWPATH
Parameter: Ghosting
VP_PREVIEWHARDWARE_DISPLAYFILTER_ONION
Parameter: Load Preset...
VP_PREVIEWHARDWARE_DISPLAYFILTER_PRESET_LOAD
Parameter: Save Preset...
VP_PREVIEWHARDWARE_DISPLAYFILTER_PRESET_SAVE
Parameter: Effects
VP_PREVIEWHARDWARE_ENHANCEDOPENGL
Parameter: HQ Noises
VP_PREVIEWHARDWARE_NOISE
Parameter: Transparency
VP_PREVIEWHARDWARE_TRANSPARENCY
Parameter: Shadows
VP_PREVIEWHARDWARE_SHADOW
Parameter: Shadowmap Size
VP_PREVIEWHARDWARE_SHADOW_MAP_SIZE
Parameter: Alternative Shadow Filtering
VP_PREVIEWHARDWARE_ALTERNATIVESHADOWMAPPING
Parameter: Reflections
VP_PREVIEWHARDWARE_REFLECTIONS
Parameter: Environment Override
VP_PREVIEWHARDWARE_REFLECTIONS_ENV_OVERRIDE
Parameter: Rotation
VP_PREVIEWHARDWARE_REFLECTIONS_ENV_ROTATION
Parameter: Screen-Space Local Reflections
VP_PREVIEWHARDWARE_REFLECTIONS_SSR
Parameter: Distance
VP_PREVIEWHARDWARE_REFLECTIONS_SSR_ITERATIONS
Parameter: Pixel Thickness
VP_PREVIEWHARDWARE_REFLECTIONS_SSR_GEOMETRY_THICKNESS
Parameter: Half Resolution
VP_PREVIEWHARDWARE_REFLECTIONS_SSR_HALF_RES
Parameter: Post Effects
VP_PREVIEWHARDWARE_POSTEFFECT
Parameter: Magic Bullet Looks
VP_PREVIEWHARDWARE_MAGICBULLETLOOKS
Parameter: SSAO
VP_PREVIEWHARDWARE_SSAO
Parameter: Tessellation
VP_PREVIEWHARDWARE_TESSELLATION
Parameter: Depth of Field
VP_PREVIEWHARDWARE_DEPTHOFFIELD
Parameter: Anti-Aliased DOF
VP_PREVIEWHARDWARE_DEPTHOFFIELD_ANTIALIASED
Parameter: Ignore Hidden Polygon Selections
VP_PREVIEWHARDWARE_IGNORE_HIDDEN_POLYGON_SELECTION
Parameter: 32-bit Framebuffer
VP_PREVIEWHARDWARE_32BIT_DEPTH
Parameter: Anti-Aliasing
VP_PREVIEWHARDWARE_ANTIALIASING
Parameter: Supersampling
VP_PREVIEWHARDWARE_SUPERSAMPLING
Parameter: Copy Effects from Viewport
VP_PREVIEWHARDWARE_COPY_VP_EFFECTS