lightsources

[radiance]

Hi,

Octane will support mesh emission as a material property, just like maxwell and most other unbiased engines.

Radiance

[tomacmuni]

I would like to see an Octane emitter material applicable in 3Dsmax before export that has a visual viewport guide for the effect of falloff and intensity, kind of like the attenuation sphere on regular 3dsmax lights. I know that in Octane they'll be updatable in 'real time' while rendering, but since scene assembly is done before rendering it'd be nice to specify during the building stage so there's less to do during the rendering (which is more taxing on the computer).

With Vray for instance, one can't easily guess the effect of changing the intensity value which defaults to a miserly 1 and it is always a guess whether to throw at it 100 or 1000 (at least for me it's a guess). In Maxwell, which uses efficacy and wattage it's even harder, though it is cool to adjust in multilight (except the hit on the sampling update is always introducing refresh lag, so a simple scaling sphere helper around the textured object would be a nice little add on, supposing the falloff distance from the object could be calculated reasonably well).

[GeoPappas]

I would like to see an Octane emitter material applicable in 3Dsmax before export that has a visual viewport guide for the effect of falloff and intensity, kind of like the attenuation sphere on regular 3dsmax lights. I know that in Octane they'll be updatable in 'real time' while rendering, but since scene assembly is done before rendering it'd be nice to specify during the building stage so there's less to do during the rendering (which is more taxing on the computer).

With Vray for instance, one can't easily guess the effect of changing the intensity value which defaults to a miserly 1 and it is always a guess whether to throw at it 100 or 1000 (at least for me it's a guess). In Maxwell, which uses efficacy and wattage it's even harder, though it is cool to adjust in multilight (except the hit on the sampling update is always introducing refresh lag, so a simple scaling sphere helper around the textured object would be a nice little add on, supposing the falloff distance from the object could be calculated reasonably well).

Instead of adjusting lighting inside the 3D app, it would make more sense (to me at least) if we could adjust lighting within Octane itself (sort of the way we can adjust an HDRI image).

[kubo]

I was thinking on doing an animation of my current project with the sun setting and the lights turning gradually on, right now it would be pretty hard to do it, cause I would have to animate light power frame by frame, which would be a pain, but I'm thinking that it could be something that a script could do, identify a material in your 3d app, and relate a value to the power in octane's emmitter, then at import change the material's node value accordingly and render happily away. I'm no programer, but I'm sure the gifted plugin scripters could find a way around it.

[radiance]

the beta 2.3 final exporters will allow you to bind any octane parameter to any anination curve in your 3d host app.

Radiance

[kubo]

the beta 2.3 final exporters will allow you to bind any octane parameter to any anination curve in your 3d host app.

you always make my day a little brighter! I'm seriously thinking you guys are like the genius in a bottle but without the wish limit!

[photonf]

will the mesh lighting be able to work in direct lighting mode also ?

since this is working per pixel...
Do you have any plans for a pseudo indirect 2nd light bounce trick for the direct light rendering mode ?
in order to get some cheap and fast GI looking results

for example create a mesh-texture or point-cloud light source from the surfaces where direct lighting hits and re-render the scene including that light source.

just an idea

But i am sure you have a lot in your mind radiance

[brecht]

will the mesh lighting be able to work in direct lighting mode also ?

It should already be working in direct light mode.

Do you have any plans for a pseudo indirect 2nd light bounce trick for the direct light rendering mode ?
in order to get some cheap and fast GI looking results

for example create a mesh-texture or point-cloud light source from the surfaces where direct lighting hits and re-render the scene including that light source.

These would be biased rendering methods, I think the plan is to focus on unbiased / incremental rendering for now. Having some sort of pre-baking step also makes things less interactive.

[ROUBAL]

Hi Brecht ! Welcome here !

I think for my own that the most important thing in a close future is to get the light emitted by meshes able to pass through glass and reflect in mirrors.

As I mostly do external scenes, I'd really like the ability to build spot projectors with a light source, a parabolic reflector and a front glass. It is absolutely necessary for cars front lights, lighthouses, scene spots, and other light sources requiring a narrow beam of light.

Best regards,

Philippe.

[vanlicht]

I second that suggestion. Currently it is very difficult to create dramatic lighting. I tried pre 2.3 to create a theatrical lighting setup, which spotlight effect is very hard to achieve. I eve create the barn doors for the light source, still the is not effective enough. Area light simply does not provide concentrated light source, comparing to a spotlight. In addtion I create someflat cubes with specularity and low roughness, in order to simulate bouncing light source... since we're talking about unbiased render here. Though, In this case there is simply no bouncing lights at all.

To conclude, i agree that something similar to spotlight is critically important feature to have. And hopefully with the upcoming update, the reflection issue is to be taken care of as well.