Community
Arnold General Rendering Forum
abbrechen
Suchergebnisse werden angezeigt für 
Anzeigen  nur  | Stattdessen suchen nach 
Meintest du: 

How to get transforms of a LightFilter?

1 ANTWORT 1
Antworten
Nachricht 1 von 2
rolmuller
261 Aufrufe, 1 Antwort

How to get transforms of a LightFilter?

Hi,

I'm trying to figure out how to get the transform matrix of a light filter.

I found I could get the matrix of the light that the filter is attached to with AiNodeGetMatrix(sg->light_filter->Lp, "matrix"). I am planning to do local overrides to Liu independent of the light transform tough so I'm wondering how to pass the transformation of the light filter itself into the shader? I found in Maya I cannot transform the blocker in the viewport at all and in Katana the transforms of the blocker won't get passed onto the .ass file.

Surely there's something I'm missing :leicht_lächelndes_Gesicht:

Any help would be appreciated!

Thanks

Beschriftungen (3)
1 ANTWORT 1
Nachricht 2 von 2
pal.mezei
als Antwort auf: rolmuller

Hi @Roland Muller !


By default, light filters don't have a transformation matrix, so it's a parameter you have to create and make sure it's available along to the light filter. You can query it in node_update and store it in a local data struct.


I don't recommend using "AiNodeGetMatrix" in shader_evaluate, AiNodeGetXXX functions are generally too "slow" for shader evaluation(except AiNodeGetName). Why do you need the transformation of the light?

Cheers,

Pal.

Sie finden nicht, was Sie suchen? Fragen Sie die Community oder teilen Sie Ihr Wissen mit anderen.

In Foren veröffentlichen  

Autodesk Design & Make Report