Vex gather question

[davylew]

I find the "samplepattern" with first parameter in Prman gather function.

Prman Doc:

"samplepattern" causes gather() to generate correctly stratified and distributed rays within the sample cone described by the subsequent arguments, but gather itself will not actually shoot any rays.

Does houdini vex gather function implement this?

[Jason]

I find the "samplepattern" with first parameter in Prman gather function.

Prman Doc:

"samplepattern" causes gather() to generate correctly stratified and distributed rays within the sample cone described by the subsequent arguments, but gather itself will not actually shoot any rays.

Does houdini vex gather function implement this?

I thought it could, somehow... I'll take a look to see if I can find it.

[davylew]

I thought it could, somehow... I'll take a look to see if I can find it.

Thx Jason.

I using gather function whitout raytrace to create selfshadow ,

but i using houdini gather function got slowest rendering.

[Jason]

Thx Jason.

I using gather function whitout raytrace to create selfshadow ,

but i using houdini gather function got slowest rendering.

I'm trying to recall a mail a conversation I has with SESI regarding this a while ago... I think what you need to do is give it a blank raytrace scope. Are you using the Gather VOP? Or coding in VEX? (ie, I think you could gather(P,dir,"scope,""))

http://www.sidefx.com/docs/houdini10.0/vex/functions/gather