Omniverse™ Flow Settings
Simulate Properties
Property |
Result |
---|---|
blockMinLifetime |
Minimum lifetime of any allocate block. Avoids premature deactivation caused by GPU readback delay.
|
densityCellSize |
Size of density cells in world units. By default velocity cell size is twice density cell size.
|
enableLowPrecisionDensity |
Use 8-bit channels for temperature, fuel, burn, smoke
|
enableLowPrecisionVelocity |
Use 8-bit channels for velocity, divergence
|
enableSmallBlocks |
Use 16x8x8 density cell blocks instead of the default 32x16x16
|
enableVariableTimeStep |
Take step every frame. Can cause inconsistent simulation behavior for highly variable time step values, but useful when frame time is fixed already.
|
forceClear |
Kills all active block allocations in this layer
|
forceDisableCoreSimulation |
Disable most simulation components. Emitters still function.
|
forceDisableEmitters |
Disable all emitters in this layer
|
forceSimulate |
Force simulate, even if timeline is paused.
|
interpolateTimeSteps |
Useful for motion blur in movie capture. Produces sub-frames between full simulation steps.
|
layer |
See Layer section above.
|
maxStepsPerSimulate |
Limit on steps per frame to avoid excessive steps when application is running slow.
|
physicsCollisionEnabled |
If true, enable collision for prims using the USD physics collision applied schema.
|
physicsConvexCollision |
If true, use the PhysX convex collision hulls for Flow collision. Requires PhysX to be actively simulating.
|
simulateWhenPaused |
Run simulation even if deltaTime is 0.0.
|
stepsPerSecond |
Simulation update rate
|
timeScale |
Scales input time. Useful for slomo.
|
velocitySubSteps |
Higher values improve behavior with high speed effects, at the cost of performance.
|
advection |
See Advection section.
|
vorticity |
See Vorticity section.
|
pressure |
See Pressure section.
|
summaryAllocate |
See SummaryAllocate section.
|
nanoVdbExport |
See NanoVdbExport section.
|
Advection
Property |
Result |
---|---|
buoyancyMaxSmoke |
Smoke clamp value applied before computing smoke buoyancy, default 1.0
|
buoyancyPerSmoke |
Buoyant force per unit smoke, default 0.0
|
buoyancyPerTemp |
Upward force relative to temperature. Higher values help produce mushroom effects.
|
burnPerTemp |
Rate of burn relative to temperature. Higher burn values affect fuel consumption and
divergence (expansion) terms.
|
combustionEnabled |
If false, only buoyancyMaxSmoke and buoyancyPerSmoke are active
|
coolingRate |
Temperature fade, applied on a per cell level. (Not conduction/convection.)
|
divergencePerBurn |
Expansion relative to burn amount. Units comparable to velocity in terms of scale.
Higher values produce visible expansion, but can remove detail.
|
downsampleEnabled |
Boolean to enable/disable downsample. Downsample needed for SummaryAllocate
|
enabled |
Boolean to enable/disable advection.
|
forceFadeEnabled |
If true, fade will be applied even if advection is disabled
|
fuelPerBurn |
Fuel consumed relative to burn amount. Lower values will make a given amount of fuel
last longer.
|
globalFetch |
Improves advection quality for high velocities, with some increase in runtime cost.
(Can remove some banding artifacts)
|
gravity |
Used to determine the ‘up’ direction for buoyancy.
|
ignitionTemp |
Minimum temperature for combustion.
|
smokePerBurn |
Smoke increase relative to burn amount.
|
tempPerBurn |
Temperature increase relative to burn amount.
|
smoke |
See Advection Channel section.
|
velocity |
See Advection Channel section.
|
divergence |
See Advection Channel section.
|
temperature |
See Advection Channel section.
|
fuel |
See Advection Channel section.
|
burn |
See Advection Channel section.
|
Advection Channel
Property |
Result |
---|---|
damping |
Reduce channel proportional to current value. Valid range is 0 to 1, where 1
takes the value to 0 immediately.
|
fade |
Reduce channel at a constant rate per second. Valid range is 0 to infinity
effectively.
|
secondOrderBlendFactor |
Second order correction factor. Value range is 0.0 to 1.0. 0.5 is generally a
safe default. Higher values increase the sharpness, but comes with potentially
banding artifacts. Use extra caution with velocity, where effects are even
more pronounced.
|
secondOrderBlendThreshold |
Minimum value to apply second order correction. Reduces simulation cost for cells
near zero, with minimal/zero visual artifacts.
|
Vorticity
Property |
Result |
---|---|
burnMask |
Allows force to be applied relative to burn value in grid.
|
constantMask |
Allows force to be applied without respect to local velocity.
|
densityMask |
Allows force to be applied relative to divergence (Parameter name
should be fixed).
|
enabled |
Boolean to enable/disable vorticity confinement.
|
forceScale |
Control intensity of effect
|
fuelMask |
Allows force to be applied relative to fuel value in grid.
|
smokeMask |
Allows force to be applied relative to smoke value in grid.
|
temperatureMask |
Allows force to be applied relative to temperature value in grid.
|
velocityLinearMask |
Makes force directly proportional to local velocity
Math: velocityLinearMask * speed
|
velocityLogScale |
This primarily exists to allow rescaling of Flow effects to different
coordinate systems.
|
velocityMask |
Velocity log mask, works together with velocityLogScale. Makes local linear
velocity a requirement for forces to be applied. The log part makes the force
applied with respect to velocity a diminishing return to avoid instability.
|
Pressure
Property |
Result |
---|---|
enabled |
Boolean to enable/disable the pressure solver.
|
Summary Allocate
Property |
Result |
---|---|
enableNeighborAllocation |
If false, SummaryAllocate preserves active blocks, but does not attempt allocation of new blocks.
|
smokeThreshold |
Minimum smoke to keep a block active.
|
speedThreshold |
Minimum speed to keep a block active, given
speedThresholdMinSmoke is satisfied.
|
speedThresholdMinSmoke |
Minimum smoke value for speedThreshold to apply.
|
NanoVdb Export
NanoVDB export allows Flow grid data to be cached out to disk. This caching also allows Flow data to feed RTX PT non-uniform volumes.
Property |
Result |
---|---|
burnEnabled |
If true, enables export of burn channel to NanoVDB.
|
divergenceEnabled |
If true, enables export of divergence channel to NanoVDB.
|
enabled |
If true, enables NanoVDB export. If false, zero NanoVDB export will occur.
|
fuelEnabled |
If true, enables export of fuel channel to NanoVDB.
|
readbackClearOnStart |
If true, readbackDirectory will be cleared of Flow VDB files at start of simulation.
|
readbackClearOnStop |
If true, readbackDirectory will be cleared of Flow VDB files at stop of simulation.
|
readbackDirectory |
Target directory for VDB files.
|
readbackEnabled |
If true, copy VDBs back to CPU. If false, VDBs will be GPU access only.
|
readbackMaterial |
Optional path to an OmniVolumeDensity material. Will automatically configure USD timeSamples necessary to play cache.
|
readbackOpenVDB |
If true, convert NanoVDB to OpenVDB format for storage on disk.
|
smokeEnabled |
If true, enables export of smoke channel to NanoVDB.
|
statisticsEnabled |
If true, compute min/max/ave values on exported VDBs.
|
temperatureEnabled |
If true, enables export of temperature channel to NanoVDB.
|
velocityEnabled |
If true, enables export of velocity channel to NanoVDB.
|
Offscreen Properties
Property |
Result |
---|---|
layer |
Layer ID to apply these settings to
|
colormap |
See Colormap section.
|
shadow |
See Shadow section.
|
debugVolume |
See DebugVolume section.
|
Colormap
Property |
Result |
---|---|
colorScale |
Multiplier applied to RGB components.
|
resolution |
Number of texels in colormap.
|
rgabPoints |
RGBA values of control points, RGB can be over 1.0 for HDR effects.
|
xPoints |
X coordinates of control points, maps to temperature. Valid over 0 to 1.
|
colorScalePoints |
Multipliers of control points applied to RGB component in control point.
|
Shadow
Property |
Result |
---|---|
attenuation |
Rate of light blockage. Higher values increase self shadow effect.
|
coarsePropagate |
Compute shadows at 2x2x2 coarser grid. Provides good
quality at a much lower runtime cost.
|
enabled |
Boolean to enable/disable self shadowing.
|
isPointLight |
If true, point light, else directional light.
|
lightDirection |
Directional light. Points to light.
|
lightPosition |
Point light position.
|
minIntensity |
Provide ambient level
|
numSteps |
Number of steps per self shadow ray, divide by 2 when
coarsePropagate is enabled.
|
stepOffsetScale |
Ray march offset to avoid a cell shadowing itself.
|
stepSizeScale |
Ray march step size relative to cell size. Higher values increase
quality and performance cost.
|
Debug Volume
Property |
Result |
---|---|
enableSpeedAsTemperature |
Write speed value to temperature channel, to visualize in ray march.
|
enableVelocityAsDensity |
Write abs() of velocity channels to density xyz to visualize in ray march.
|
velocityScale |
Scale applied to velocity to control brightness for ray march result.
|
Render Properties
Property |
Result |
---|---|
layer |
Layer ID to apply these settings to
|
rayMarch |
See RayMarch section
|
RayMarch
Property |
Result |
---|---|
attenuation |
Rate of light blockage. Higher values make the volume look more opaque
|
colorScale |
Multiplier applied to RGB values during ray march
|
enableBlockWireframe |
Visualizes active blocks for debug purposes
|
enableRawMode |
If true, do not apply colormap, pass raw density xyzw as color
|
shadowFactor |
The degree to which the z shadow channel scales the RGB channels from
the colormap. 1.0 is default. 0.0 disables self shadowing effectively.
|
stepSizeScale |
Ray march step size relative to cell size. Higher values increase
quality and performance cost.
|
cloud |
See RayMarchCloud section.
|
RayMarch Cloud
Property |
Result |
---|---|
ambientColor |
Color in shadowed regions.
|
ambientMultiplier |
Scale to adjust brightness of ambient color.
|
attenuationMultiplier |
Controls how fast cloud shadows go dark.
|
densityMultiplier |
Scales input density.
|
enableCloudMode |
If true, default ray march is disabled, these settings are used instead.
|
numShadowSteps |
More steps can improve quality, but add performance cost.
|
shadowStepMultiplier |
Larger steps cover more of world space, at risk of artifacts.
|
sunDirection |
Direction to sun.
|
volumeBaseColor |
Base color for scattering.
|
volumeColorMultiplier |
Scale to adjust brightness of volume base color.
|
Emitter Properties
Emitter Sphere
Sphere emitters are the simplest emitter type. Defined by a position and radius.
Property |
Result |
---|---|
allocationScale |
1.0 allocates blocks needed to contain sphere. 0.0 disables allocation.
Values higher than 1.0 can be used to add additional padding.
|
applyPostPressure |
If true, apply velocity after pressure solve. This is useful
for collision, as it allows hard enforcement of velocity inside
moving bodies.
|
burn |
Target burn value.
|
coupleRateBurn |
Couple rate for burn channel.
|
coupleRateDivergence |
Couple rate for divergence channel.
|
coupleRateFuel |
Couple rate for the fuel channel.
|
coupleRateSmoke |
Couple rate for the smoke channel.
|
coupleRateTemperature |
Couple rate for the temperature channel.
|
coupleRateVelocity |
Couple rate for the velocity channel.
|
divergence |
Target divergence value.
|
enabled |
Boolean to enable/disable emitter
|
fuel |
Target fuel value.
|
layer |
Layer ID of simulation this emitter effects
|
multisample |
Test sphere overlap at 8 locations instead of 1
|
numSubSteps |
Substeps per simulation update. More steps produce a smoother result with moving emitters.
|
physicsVelocityScale |
If set to 1.0, the body velocity will be added to the target velocity.
This is useful for collision effects, where the body velocity
and grid cell velocity should align.
|
position |
Position of sphere
|
radius |
World space radius of sphere
|
radiusIsWorldSpace |
If true, do not apply xform scale to radius
|
smoke |
Target smoke value.
|
temperature |
Target temperature value.
|
velocity |
Target velocity value.
|
velocityIsWorldSpace |
If true, do not rotate velocity by xform
|
Emitter Box
Box emitters support emission from an oriented box. Clipping planes can also be added to support convex hulls.
Property |
Result |
---|---|
allocationScale |
1.0 allocates blocks needed to contain box. 0.0 disables allocation.
Values higher than 1.0 can be used to add additional padding.
|
applyPostPressure |
If true, apply velocity after pressure solve. This is useful for
collision, as it allows hard enforcement of velocity inside moving bodies.
|
burn |
Target burn value.
|
clippingPlanes |
List of clipping planes in local space.
|
coupleRateBurn |
Couple rate for burn channel.
|
coupleRateDivergence |
Couple rate for divergence channel.
|
coupleRateFuel |
Couple rate for the fuel channel.
|
coupleRateSmoke |
Couple rate for the smoke channel.
|
coupleRateTemperature |
Couple rate for the temperature channel.
|
coupleRateVelocity |
Couple rate for the velocity channel.
|
divergence |
Target divergence value.
|
enabled |
Boolean to enable/disable emitter
|
fuel |
Target fuel value.
|
halfSize |
Half of box width/height/depth in local units
|
layer |
Layer integer. See Layer section.
|
multisample |
Test sphere overlap at 8 locations instead of 1
|
physicsVelocityScale |
If set to 1.0, the body velocity will be added to the target velocity.
This is useful for collision effects, where
the body velocity and grid cell velocity should align.
|
smoke |
Target smoke value.
|
temperature |
Target temperature value.
|
velocity |
Target velocity value.
|
velocityIsWorldSpace |
If true, do not rotate velocity by xform
|
Emitter Point
Point emitters allow simple arrays to define points that are splatted to the simulation.
Property |
Result |
---|---|
allocateMask |
Default allocation behavior. If true and allocateMasks is empty, all points will trigger allocation.
|
applyPostPressure |
If true, apply velocity after pressure solve.
This is useful for collision, as it allows hard enforcement of velocity inside moving bodies.
|
burn |
Default target burn value.
|
burnScale |
Multiplier for burn and pointBurns.
|
colorIsSrgb |
If true, perform color correction on temperature, fuel, burn channels
|
coupleRateBurn |
Default couple rate for burn channel.
|
coupleRateDivergence |
Default couple rate for divergence channel.
|
coupleRateFuel |
Default couple rate for fuel channel.
|
coupleRateSmoke |
Default couple rate for smoke channel.
|
coupleRateTemperature |
Default couple rate for temperature channel.
|
coupleRateVelocity |
Default couple rate for velocity channel.
|
divergence |
Default target divergence value.
|
divergenceScale |
Multiplier for divergence and pointDivergences.
|
enabled |
Boolean to enable/disable emitter
|
enableStreaming |
If true, only apply streamingBatchSize per frame
|
fuel |
Default target fuel value.
|
fuelScale |
Multiplier for fuel and pointFuels
|
layer |
Layer integer. See Layer section.
|
numSubSteps |
If numSubSteps > 1, Interpolates point position using velocity
|
pointAllocateMasks |
Optional array of allocate settings per point.
|
pointBurns |
Array of target burn values for each position.
|
pointColors |
Array of temperature, fuel, burn values, used for color with ray march in raw mode.
|
pointCoupleRateBurns |
Array of burn couple rates for each position.
|
pointCoupleRateDivergences |
Array of divergence couple rates for each position.
|
pointCoupleRateFuels |
Array of fuel couple rate for each position.
|
pointCoupleRateSmokes |
Array of smoke couple rates for each position.
|
pointCoupleRateTemperatures |
Array of temperature couple rates for each position.
|
pointCoupleRateVelocities |
Array of velocity couple rates for each position.
|
pointDivergences |
Array of target divergence values for each position.
|
pointFuels |
Array of target fuel values for each position
|
pointPositions |
Array of local space positions. Determines total point count.
|
pointSmokes |
Array of target smoke values for each position
|
pointsPrim |
Optional relationship to UsdGeomPoint, to source arrays
|
pointTemperatures |
Array of target temperature values for each position.
|
pointVelocities |
Array of target velocity values for each position.
|
smoke |
Default target smoke value.
|
smokeScale |
Multiplier for smoke and pointSmokes
|
streamClearAtStart |
If true, clears entire layer when streaming start
|
streamOnce |
If true, apply each point to the grid only once
|
temperature |
Default target temperature value.
|
temperatureScale |
Multiplier for temperature and pointTemperatures
|
updateCoarseDensity |
If true, update coarse density for the block covered by this emitter
|
velocity |
Default target velocity value.
|
velocityIsWorldSpace |
If true, do not rotate velocity by xform
|
velocityScale |
Multiplier for velocity and pointVelocities
|
Emitter Mesh
Mesh emitters rasterize meshes to the Flow grid. Can connect to UsdGeomMesh prims to use existing meshes in stage.
Experimental feature.
Property |
Result |
---|---|
allocateMask |
Default allocation behavior. If true and allocateMasks is empty, all points will trigger allocation.
|
applyPostPressure |
If true, apply velocity after pressure solve.
This is useful for collision, as it allows hard enforcement of velocity inside moving bodies.
|
burn |
Default target burn value.
|
burnScale |
Multiplier for burn and pointBurns.
|
colorIsSrgb |
If true, perform color correction on temperature, fuel, burn channels
|
coupleRateBurn |
Default couple rate for burn channel.
|
coupleRateDivergence |
Default couple rate for divergence channel.
|
coupleRateFuel |
Default couple rate for fuel channel.
|
coupleRateSmoke |
Default couple rate for smoke channel.
|
coupleRateTemperature |
Default couple rate for temperature channel.
|
coupleRateVelocity |
Default couple rate for velocity channel.
|
divergence |
Default target divergence value.
|
divergenceScale |
Multiplier for divergence and pointDivergences.
|
enabled |
Boolean to enable/disable emitter
|
fuel |
Default target fuel value.
|
fuelScale |
Multiplier for fuel and pointFuels
|
layer |
Layer integer. See Layer section.
|
maxDistance |
Max distance from surface to emit.
|
meshBurns |
Array of target burn values for each face index.
|
meshColors |
Array of temperature, fuel, burn values, used for color with ray march in raw mode.
|
meshCoupleRateBurns |
Array of burn couple rates for each face index.
|
meshCoupleRateDivergences |
Array of divergence couple rates for each face index.
|
meshCoupleRateFuels |
Array of fuel couple rate for each face index.
|
meshCoupleRateSmokes |
Array of smoke couple rates for each face index.
|
meshCoupleRateTemperatures |
Array of temperature couple rates for each face index.
|
meshCoupleRateVelocities |
Array of velocity couple rates for each position.
|
meshDivergences |
Array of target divergence values for each face index.
|
meshFaceVertexCounts |
Array of vertex counts for each polygon face
|
meshFaceVertexIndices |
Array of indices for each face pointing to position indices.
|
meshFuels |
Array of target fuel values for each position
|
meshPositions |
Array of local space positions. Determines total point count.
|
meshPrim |
Optional relationship to UsdGeomMesh, to source arrays
|
meshSmokes |
Array of target smoke values for each position
|
meshSubsetEnableds |
Reserved for future use.
|
meshSubsetFaceCounts |
Reserved for future use.
|
meshSubsetLayers |
Reserved for future use.
|
meshTemperatures |
Array of target temperature values for each position.
|
meshVelocities |
Array of target velocity values for each position.
|
minDistance |
Min distance from surface to emit.
|
numSubSteps |
If numSubSteps > 1, Interpolates point position using velocity
|
orientationLeftHanded |
If true, assume left winding direction of face polygons.
|
physicsVelocityScale |
If set to 1.0, the body velocity will be added to the target velocity.
|
smoke |
Default target smoke value.
|
smokeScale |
Multiplier for smoke and pointSmokes
|
temperature |
Default target temperature value.
|
temperatureScale |
Multiplier for temperature and pointTemperatures
|
velocity |
Default target velocity value.
|
velocityIsWorldSpace |
If true, do not rotate velocity by xform
|
velocityScale |
Multiplier for velocity and pointVelocities
|
Emitter Texture
Texture emitters allow simple arrays to define dense 3D grids of values.
Note
Mapping of Array Index to Texel: arrayIndex = (texelIndex.z * textureHeight + texelIndex.y) * textureWidth + texelIndex.x
textureName:assetPath and textureName:channel enable the use of standard image file formats as input to the texture emitter. Current channel values supported are red, green, blue, alpha, redSrgb, greenSrgb, blueSrgb, alphaSrgb, redSnorm, greenSnorm, blueSnorm, alphaSnorm. For Vec3 velocity, a red channel value will use red, green, blue to drive x, y, z.
Property |
Result |
---|---|
allocationScale |
1.0 allocates blocks needed to contain box defined by halfSize/position. 0.0 disables allocation. Values higher than 1.0 can be used to add
additional padding.
|
applyPostPressure |
If true, apply velocity after pressure solve.
This is useful for collision, as it allows hard enforcement of velocity inside moving bodies.
|
burn |
Default target burn value.
|
burnScale |
Multiplier for burn and textureBurns
|
colorIsSrgb |
If true, perform color correction on temperature, fuel, burn channels
|
coupleRateBurn |
Default couple rate for burn channel.
|
coupleRateDivergence |
Default couple rate for divergence channel.
|
coupleRateFuel |
Default couple rate for fuel channel.
|
coupleRateSmoke |
Default couple rate for smoke channel.
|
coupleRateRateTemperature |
Default couple rate for temperature channel.
|
coupleRateVelocity |
Default couple rate for velocity channel.
|
divergence |
Default target divergence value.
|
divergenceScale |
Multiplier for divergence and textureDivergences
|
enabled |
Boolean to enable/disable emitter.
|
fuel |
Default target fuel value.
|
fuelScale |
Multiplier for fuel and textureFuels
|
halfSize |
Half of box width/height/depth in world units.
|
layer |
Layer integer. See Layer section.
|
position |
World space position.
|
smoke |
Default target smoke value.
|
smokeScale |
Multiplier for smoke and textureSmokes
|
temperature |
Default target temperature value.
|
temperatureScale |
Multiplier for temperature and temperatureScale
|
textureBurns |
Array of target burn values for each texel.
|
textureCoupleRateBurns |
Array of burn couple rates for each texel.
|
textureCoupleRateDivergences |
Array of divergence couple rates for each texel.
|
textureCoupleRateFuels |
Array of fuel couple rate for each texel.
|
textureCoupleRateSmokes |
Array of smoke couple rates for each texel.
|
textureCoupleRateTemperatures |
Array of temperature couple rates for each texel.
|
textureCoupleRateVelocities |
Array of velocity couple rates for each texel.
|
textureDepth |
Depth in texels of texture data.
|
textureDivergences |
Array of target divergence values for each texel.
|
textureFirstElement |
Array index offset applied for all arrays. Useful for animation.
|
textureFuels |
Array of target fuel values for each texel.
|
textureHeight |
Height in texels of texture data.
|
textureSmokes |
Array of target smoke values for each texel.
|
textureTemperatures |
Array of target temperature values for each texel.
|
textureVelocities |
Array of target velocity values for each texel.
|
textureWidth |
Width in texels of texture data.
|
velocity |
Default target velocity value.
|
velocityIsWorldSpace |
If true, do not rotate velocity by xform
|
velocityScale |
Multiplier for velocity and textureVelocities
|
Emitter NanoVDB
NanoVDB emitters allow sparse voxel data structures to define emitter shapes/values.
Property |
Result |
---|---|
allocateActiveLeaves |
If true, finer allocation granularity is used. (Adds some CPU overhead.)
|
allocationScale |
1.0 allocates blocks needed to contain NanoVDB. 0.0 disables allocation. Values higher than 1.0 can be used to add
additional padding.
|
applyPostPressure |
If true, apply velocity after pressure solve.
This is useful for collision, as it allows hard enforcement of velocity inside moving bodies.
|
burn |
Default target burn value.
|
burnScale |
Multiplier for burn and nanoVdbBurns.
|
colorIsSrgb |
If true, perform color correction on temperature, fuel, burn channels
|
coupleRateBurn |
Default couple rate for burn channel.
|
coupleRateDivergence |
Default couple rate for divergence channel.
|
coupleRateFuel |
Default couple rate for fuel channel.
|
coupleRateSmoke |
Default couple rate for smoke channel.
|
coupleRateTemperature |
Default couple rate for temperature channel.
|
coupleRateVelocity |
Default couple rate for velocity channel.
|
divergence |
Default target divergence value.
|
divergenceScale |
Multiplier for divergence and nanoVdbDivergences
|
enabled |
Boolean to enable/disable emitter
|
fuel |
Default target fuel value.
|
fuelScale |
Multiplier for fuel and nanoVdbFuels
|
layer |
Layer integer. See Layer section.
|
maxDistance |
Maximum distance for emitter active region. Used with nanoVdbDistances.
|
minDistance |
Minimum distance for emitter active region. Used with nanoVdbDistances.
|
nanoVdbBurnFirstElement |
Burn channel. Word offset applied when reading nanoVdbBurns array.
|
nanoVdbBurns |
Burn channel. Word array containing NanoVDB data structure
|
nanoVdbBurns::assetPath |
Burn channel. Optional path to OpenVDB/NanoVDB asset to use. Overrides nanoVdbBurns.
|
nanoVdbBurns::gridName |
Burn channel. Grid name to search for in NanoVDB data structure.
|
nanoVdbCoupleRateBurnFirstElement |
Burn couple rate channel. Word offset applied when reading nanoVdbCoupleRateBurns array.
|
nanoVdbCoupleRateBurns |
Burn couple rate channel. Word array containing NanoVDB data structure
|
nanoVdbCoupleRateBurns::assetPath |
Burn couple rate channel. Optional path to OpenVDB/NanoVDB asset to use. Overrides nanoVdbCoupleRateBurns.
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nanoVdbCoupleRateBurns::gridName |
Burn couple rate channel. Grid name to search for in NanoVDB data structure.
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nanoVdbCoupleRateDivergenceFirstElement |
Divergence couple rate channel. Word offset applied when reading nanoVdbCoupleRateDivergences array.
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nanoVdbCoupleRateDivergences |
Divergence couple rate channel. Word array containing NanoVDB data structure
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nanoVdbCoupleRateDivergences::assetPath |
Divergence couple rate channel. Optional path to OpenVDB/NanoVDB asset to use. Overrides nanoVdbCoupleRateDivergences.
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nanoVdbCoupleRateDivergences::gridName |
Divergence couple rate channel. Grid name to search for in NanoVDB data structure.
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nanoVdbCoupleRateFuelFirstElement |
Fuel couple rate channel. Word offset applied when reading nanoVdbCoupleRateFuels array.
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nanoVdbCoupleRateFuels |
Fuel couple rate channel. Word array containing NanoVDB data structure
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nanoVdbCoupleRateFuels::assetPath |
Fuel couple rate channel. Optional path to OpenVDB/NanoVDB asset to use. Overrides nanoVdbCoupleRateFuels.
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nanoVdbCoupleRateFuels::gridName |
Fuel couple rate channel. Grid name to search for in NanoVDB data structure.
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nanoVdbCoupleRateSmokeFirstElement |
Smoke couple rate channel. Word offset applied when reading nanoVdbCoupleRateSmokes array.
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nanoVdbCoupleRateSmokes |
Smoke couple rate channel. Word array containing NanoVDB data structure
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nanoVdbCoupleRateSmokes::assetPath |
Smoke couple rate channel. Optional path to OpenVDB/NanoVDB asset to use. Overrides nanoVdbCoupleRateSmokes.
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nanoVdbCoupleRateSmoke::gridName |
Smoke couple rate channel. Grid name to search for in NanoVDB data structure.
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nanoVdbCoupleRateTemperatureFirstElement |
Temperature couple rate channel. Word offset applied when reading nanoVdbCoupleRateTemperatures array.
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nanoVdbCoupleRateTemperatures |
Temperature couple rate channel. Word array containing NanoVDB data structure
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nanoVdbCoupleRateTemperatures::assetPath |
Temperature couple rate channel. Optional path to OpenVDB/NanoVDB asset to use. Overrides nanoVdbCoupleRateTemperatures.
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nanoVdbCoupleRateTemperature::gridName |
Temperature couple rate channel. Grid name to search for in NanoVDB data structure.
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nanoVdbCoupleRateVelocities |
Velocity couple rate channel. Word array containing NanoVDB data structure
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nanoVdbCoupleRateVelocities::assetPath |
Velocity couple rate channel. Optional path to OpenVDB/NanoVDB asset to use. Overrides nanoVdbCoupleRateVelocities.
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nanoVdbCoupleRateVelocities::gridName |
Velocity couple rate channel. Grid name to search for in NanoVDB data structure.
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nanoVdbCoupleRateVelocityFirstElement |
Velocity couple rate channel. Word offset applied when reading nanoVdbCoupleRateVelocities array.
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nanoVdbDistanceFirstElement |
Distance channel. Word offset applied when reading nanoVdbDistances array.
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nanoVdbDistances |
Distance channel. Word array containing NanoVDB data structure
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nanoVdbDistances::assetPath |
Distance channel. Optional path to OpenVDB/NanoVDB asset to use. Overrides nanoVdbDistances.
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nanoVdbDistances::gridName |
Distance channel. Grid name to search for in NanoVDB data structure.
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nanoVdbDivergenceFirstElement |
Divergence channel. Word offset applied when reading nanoVdbDivergences array.
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nanoVdbDivergences |
Divergence channel. Word array containing NanoVDB data structure
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nanoVdbDivergences::assetPath |
Divergence channel. Optional path to OpenVDB/NanoVDB asset to use. Overrides nanoVdbDivergences.
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nanoVdbDivergences::gridName |
Divergence channel. Grid name to search for in NanoVDB data structure.
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nanoVdbFuelFirstElement |
Fuel channel. Word offset applied when reading nanoVdbFuels array.
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nanoVdbFuels |
Fuel channel. Word array containing NanoVDB data structure
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nanoVdbFuels::assetPath |
Fuel channel. Optional path to OpenVDB/NanoVDB asset to use. Overrides nanoVdbFuels.
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nanoVdbFuels::gridName |
Fuel channel. Grid name to search for in NanoVDB data structure.
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nanoVdbSmokeFirstElement |
Smoke channel. Word offset applied when reading nanoVdbSmokes array.
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nanoVdbSmokes |
Smoke channel. Word array containing NanoVDB data structure
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nanoVdbSmokes::assetPath |
Smoke channel. Optional path to OpenVDB/NanoVDB asset to use. Overrides nanoVdbSmokes.
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nanoVdbSmokes::gridName |
Smoke channel. Grid name to search for in NanoVDB data structure.
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nanoVdbTemperatureFirstElement |
Temperature channel. Word offset applied when reading nanoVdbTemperatures array.
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nanoVdbTemperatures |
Temperature channel. Word array containing NanoVDB data structure
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nanoVdbTemperatures::assetPath |
Temperature channel. Optional path to OpenVDB/NanoVDB asset to use. Overrides nanoVdbTemperatures.
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nanoVdbTemperatures::gridName |
Temperature channel. Grid name to search for in NanoVDB data structure.
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nanoVdbVelocities |
Velocity channel. Word array containing NanoVDB data structure
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nanoVdbVelocities::assetPath |
Velocity channel. Optional path to OpenVDB/NanoVDB asset to use. Overrides nanoVdbVelocities.
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nanoVdbVelocities::gridName |
Velocity channel. Grid name to search for in NanoVDB data structure.
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nanoVdbVelocityFirstElement |
Velocity channel. Word offset applied when reading nanoVdbVelocities array.
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smoke |
Default target smoke value.
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smokeScale |
Multiplier for smoke and nanoVdbSmokes
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temperature |
Default target temperature value.
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temperatureScale |
Multiplier for temperature and nanoVdbTemperatures
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velocity |
Default target velocity value.
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velocityIsWorldSpace |
If true, do not rotate velocity by xform
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velocityScale |
Multiplier for velocity and nanoVdbVelocities
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