User Manual

Generate Z Buffer
Selecting this checkbox causes the pRender node to produce a Z Buffer channel in the image.
The depth of each particle is represented in the Z Buffer. This channel can then be used for
additional depth operations like Depth Blur, Depth Fog, and Downstream Z Merging.
Enabling this option is likely to increase the render times for the particle system dramatically.
Depth Merge Particles
Enabling this option causes the particles to be merged using Depth Merge techniques, rather
than layer-based techniques.
Scene Tab
Z Clip
The Z Clip control is used to set a clipping plane in front of the camera. Particles that cross this
plane are clipped, preventing them from impacting on the virtual lens of the camera and
dominating the scene.
Grid Tab
These controls do not apply to 3D particles.
The grid is a helpful, non-rendering display guide used to orient the 2D particles in 3D space.
The grid is never seen in renders, just like a center crosshair is never seen in a render. The
width, depth, number of lines, and grid color can be set using the controls found in this tab.
These controls cannot be animated.
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