> tools

SSFR

tools/ssfr·v1.5.1

IN:1 OUT:0

SUMMARY

SSFR draws particles from SPH, FLIP or any POP as a continuous liquid surface inside the Render TOP set on the operator. Each particle becomes an ellipsoid aligned with its neighbors, the depth is smoothed with a narrow-range filter, and the fluid thickness is accumulated so the surface absorbs and tints light.

The Refractive material adds Fresnel reflection, IOR, absorption and extinction color, with refraction shown as plain transparency, the scene behind, a background TOP or the environment. The PBR material uses base color, metallic and roughness instead. Environment Light COMPs in the Render TOP provide reflections, and surface detail ripples and tone mapping are optional.

PARAMETERS

PAGESSFR

Render TOP	Rendertop	The Render TOP that draws this operator. Its camera, resolution and lights are used for the fluid passes.
Resolution Scale	Resolutionscale	Resolution of the fluid passes as a fraction of the Render TOP resolution. Lower values render faster with a softer surface.
Particle Scale	Particlescale	Multiplies the PointScale attribute (the particle radius). Without a PointScale attribute the radius is 0.01.
Anisotropy	Anisotropy	Stretches each particle into an ellipsoid aligned with its neighbors, so flat surfaces and thin sheets render flat instead of as round bumps.
Anisotropy Radius	Anisotropyradius	Radius in world units of the neighborhood that sets each particle's shape, usually 2 to 4 particle spacings (the SPH Smoothing Radius works well).
Max Stretch	Maxstretch	Largest ratio between the longest and the shortest axis of a particle.
Min Neighbors	Minneighbors	Particles with fewer neighbors than this (spray, droplets) stay round.
Position Smoothing	Positionsmoothing	Moves each particle toward the weighted center of its neighbors before drawing, which evens out the surface. 0 draws the simulated positions.
Smooth	Smooth	Smooths the surface depth with a narrow-range filter: nearby particles merge into one surface while separate layers and silhouettes stay sharp.
Iterations	Iterations	Number of times the filter runs (each run filters horizontally, then vertically). More iterations give a smoother surface.
Smoothing Radius	Smoothingradius	Radius of the filter in particle radii. It is measured in world space, so the surface is smoothed the same at any distance from the camera.
Depth Range	Depthrange	Depth difference, in particle radii, still treated as one surface. Smaller values keep overlapping layers apart; larger values smooth steeper slopes.
Edge Clamp	Edgeclamp	How far behind the surface, in particle radii, the empty space next to a silhouette is taken to be. Larger values round the fluid edges more.
Max Filter Size	Maxfiltersize	Maximum filter radius in pixels. A larger radius costs the same but samples more sparsely.
Thickness Resolution	Thicknessres	Resolution of the thickness passes as a fraction of the fluid pass resolution. The thickness is soft, so half resolution is usually enough.
Thickness Blur	Thicknessblur	Blur radius of the thickness in pixels, which removes the particle pattern from the absorption.

PAGEMaterial

[+]Material Type	Materialtype	Refractive shades the fluid as a clear liquid with reflection, refraction and absorption. PBR shades it as an opaque surface.
[+]Refraction	Refraction	Selects what is seen through the fluid: a transparent blend over the scene, the Refract Geometry, the Background TOP, or the environment.
Refract Geometry	Refractgeometry	Geometry COMPs seen through the fluid when Refraction is Scene, as an op pattern like the Render TOP's Geometry. SSFR operators are always left out.
Background TOP	Backgroundtop	The scene behind the fluid, rendered without this operator (for example a second Render TOP with the same camera). Used when Refraction is Background TOP.
IOR	Ior	Index of refraction of the fluid. Water is 1.33. It sets the Fresnel reflection and how much the refraction bends.
Refraction Scale	Refractionscale	Scales how far the refracted ray travels through the fluid thickness before it samples what is behind the fluid (Scene or Background TOP).
Absorption	Absorption	How much light the fluid absorbs per unit of thickness. Higher values make thick regions darker and more colored.
[+]Extinction Color	Extinction	Relative absorption of red, green and blue. The fluid takes the color absorbed least: the default absorbs red most and looks blue.
[+]Base Color	Basecolor	Base color of the fluid in PBR mode, multiplied by the particle Color.
Metallic	Metallic	Metalness of the fluid in PBR mode.
Roughness	Roughness	Roughness of the surface. Lower values give sharper reflections and highlights.
Specular Level	Specularlevel	Strength of the reflection at facing angles. At 0.5 a refractive fluid reflects what its IOR gives; a PBR fluid reflects 4 percent.
Ambient Occlusion	Ambientocclusion	Strength of the environment lighting on the fluid: reflections, inner light and Environment refraction. 0 turns the environment off.
[+]Emit	Emit	Color added to the fluid regardless of lighting.
Surface Detail	Surfacedetail	Adds small procedural ripples to the surface normals.
Detail Size	Detailsize	Size of the ripples in world units.
Detail Strength	Detailstrength	Sets the strength of the ripples.
Show Environment	Showenvironment	Draws the environment (every Environment Light in the Render TOP's Lights, summed) behind the scene.
Tone Map	Tonemap	Tone maps the fluid color. Leave it off when the Render TOP output is tone mapped later.
[+]Tone Mapper	Tonemapper	The tone mapping curve.
Exposure	Exposure	Multiplies the color before tone mapping.
Gamma	Gamma	Gamma applied after tone mapping (not used by Hejl Burgess, which includes it).

PAGECommon

Free Extra GPU Memory

Freeextragpumem

Free memory that has accumulated when output memory has grown and shrunk.

INPUTS

Input 0 POP - Particles In