pay attention with Octane lights!!!

[gabrielefx]

As I explained in the 3.0d discussion here I want to show what happens using the new 3.0 lights

With the introduction of instances and movable objects/lights we will experience an heavy performance loss (rendering computation).

This happens also when our lights are visible in the scene but turned off.

This is valid for sun too.

Now the only way to get decent performance from Octane is to use mesh lights, temporarily enable the proxy state to tweak the orientation and then switch it off.

In the case we have to orient many ies lights in different directions we have to use proxy lights but if we have a wall with several pictures we can use one only light material oriented facing the wall and applied to several aligned emitters.

Regards.

[Karba]

As I explained in the 3.0d discussion here I want to show what happens using the new 3.0 lights

With the introduction of instances and movable objects/lights we will experience an heavy performance loss (rendering computation).

This happens also when our lights are visible in the scene but turned off.

This is valid for sun too.

Now the only way to get decent performance from Octane is to use mesh lights, temporarily enable the proxy state to tweak the orientation and then switch it off.

In the case we have to orient many ies lights in different directions we have to use proxy lights but if we have a wall with several pictures we can use one only light material oriented facing the wall and applied to several aligned emitters.

Regards.

With suns it doesn't work. Plugin uses only first enabled sun. All other are ignored.

Do you use any other proxies except light sources?

[gabrielefx]

many off suns present in a scene will slow down performance, this is valid for every type of light (not mesh)

my tests confirm the issue.

[Karba]

many off suns present in a scene will slow down performance.

It is impossible.

Actually proxy count can affect speed. no matter it is light source mesh or regular mesh.

[gabrielefx]

many off suns present in a scene will slow down performance.

It is impossible.

Actually proxy count can affect speed. no matter it is light source mesh or regular mesh.

Hi Karba,

in slide 01 as you can see I have 3.005 M samples/sec with one single sun visible and ON

in slide 02 I have 2.6 M samples/sec with with all suns visible but only one can emits light

try yourself and put 100 suns in a scene, then move them into a layer and switch it on and off, leave only one sun ON
Let me know what are the performances. If you get the same performances I will send my scene.

[Karba]

many off suns present in a scene will slow down performance.

It is impossible.

Actually proxy count can affect speed. no matter it is light source mesh or regular mesh.

Hi Karba,

in slide 01 as you can see I have 3.005 M samples/sec with one single sun visible and ON

in slide 02 I have 2.6 M samples/sec with with all suns visible but only one can emits light

try yourself and put 100 suns in a scene, then move them into a layer and switch it on and off, leave only one sun ON
Let me know what are the performances. If you get the same performances I will send my scene.

Are you sure difference was only that suns?
I tried it with 10 suns, no speed difference.

[gabrielefx]

Hi Karba,

you tried with a complex scene?