Blobby Surface - particle transparency

[noxy]

Sure, since blobbies use a typical Maya shader, create a particle sampler info node and connect the outTransparency into the transparency of the shader. Any OpacityPP rules will be piped into the shader. works great for custom userScalarPP and userVectorPP into various shader attributes.

noxy

[daliwonga]

@noxy: thanks for replying.
Unfortunately I cannot get this working for 'Blobby Surface' particles.
I tried the tutorial 'Create raytraced shadows with particles - Example: Using the particles age to color particles' (avail from help section) but this only works for 'Clouds (s/w)' and 'Tubes (s/w)'. When I change particles to 'Blobby Surface', the colouring no longer works.
It would be great if someone could tell me how to get this tut working for blobbies.

[noxy]

It sounds like you're using the particleCloud shader, which can't be used for blobby particles, only a typical surface shader (like blinn or lambert). If you set up an age ramp in the particle shape throught the rgbPP attribute, you can then use the ParticleSamplerInfo node to pipe that into the shader on the particles. Remember, everything hinges on the ParticleSamplerInfo node, so read up on that in the docs.

Noxy

@noxy: thanks for replying.
Unfortunately I cannot get this working for 'Blobby Surface' particles.
I tried the tutorial 'Create raytraced shadows with particles - Example: Using the particles age to color particles' (avail from help section) but this only works for 'Clouds (s/w)' and 'Tubes (s/w)'. When I change particles to 'Blobby Surface', the colouring no longer works.
It would be great if someone could tell me how to get this tut working for blobbies.

[daliwonga]

@noxy: thx for explaining again; all is ok now.

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