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UI Expand

title	LPE Symbols

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Symbol	Description	Type
Initial ray spawn event
C	Camera ray	Initial ray spawn event
Ray spawn events
R	Reflection ray	Ray spawn event
T	Transmission ray	Ray spawn event
V	Volume ray	Ray spawn event
Scattering types
D	Diffuse scattering	Scattering type
G	Glossy scattering	Scattering type
S	Singular scattering	Scattering type
s	Straight (no) scattering	Scattering type
Ray termination (final) events
L	Light hit	Ray intersection event
O	Emitting object hit	Ray intersection event
B	Background hit	Ray intersection event

Preset	Light path expression
Render Elements
RGB	C.*
Self-Illumination	C[OL]
Background	CB
Lighting	C<RD>L
Specular	C<R[GS]>L
GI	C<RD>(.+L\|.*[OB])
SSS	C<TD>.+L
Reflection	C<R[GS]>.+L
Refraction	C<T[GS]>.+L
Atmosphere	CV.*
Light Selects
Direct Illumination	CRL
Direct Diffuse	C<RD>L
Direct Specular	C<R[GS]>L
Full	C.*L
Indirect	CR.+L
Indirect Diffuse	C<RD>.+L
Indirect Specular	C<R[GS]>.+L
Misc
Self-illumination, no lights	CO
GI from Self-Illumination	C<RD>.*O
GI from Environment	C<RD>.*B
Object/Material Select
Indirect for Object ID 1	CR'1'.+L
Indirect for all Object IDs but 1 and 2	CR[^'1''2'].+L
RGB for Material ID 1	C.'m1'.*
Self-Reflections by Material ID 1	C<R[GS]'m1'>.'m1'+L
SSS
Scattering from Objects directly visible to the Camera	C<TD>.+L
Scattering from Objects occluded behind reflections and refractions	C<[RT][SG]>+<TD>.+L
Scattering from Objects both directly visible or occluded behind reflections and refractions	C<[RT][SG]>*<TD>.+L

UI Text Box

type	tip

It will be faster and more efficient to use the already available render elements instead of their LPE equivalents in the presets, of course - the examples are there as a point of reference.

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