Chaos Corona Forum
Chaos Corona for 3ds Max => [Max] Feature Requests => [Max] Resolved Feature Requests => Topic started by: JCdeBlok on 2018-01-04, 10:33:35
-
The LightMtl has a 'emit light' toggle which is quite handy in certain situations where you want something to be self illuminated but not add the the overall light contribution.
Would be nice to have that option for the self illumination property op the normal corona materials as well.
-
I don't think this is necessary as self illumination is designed for different purposes and it should never emit strong light anyway (it will be cut off by MSI).
For more info check out https://coronarenderer.freshdesk.com/support/solutions/articles/5000515603
-
I'm aware of that, but sometimes I need objects in an animation to be highlighted for example. It's easy to render out a mask and raise levels in post, until it goes behind glass or something. For things like that you want the full material + self illumination but without emitting actual lights.
Lots of times I now use the LightMtl to render objects with baked textures for example, put the texture in the light material and disable emission and you have a nice way to render texture as they are without being affected by any lights. But let's say you do want some reflections on it you can't do that easily. You have to do the same trick with a normal material which will always emit actual light. .
So that's why I asked for that checkbox.
-
I'm aware of that, but sometimes I need objects in an animation to be highlighted for example. It's easy to render out a mask and raise levels in post, until it goes behind glass or something. For things like that you want the full material + self illumination but without emitting actual lights.
Lots of times I now use the LightMtl to render objects with baked textures for example, put the texture in the light material and disable emission and you have a nice way to render texture as they are without being affected by any lights. But let's say you do want some reflections on it you can't do that easily. You have to do the same trick with a normal material which will always emit actual light. .
So that's why I asked for that checkbox.
In both you can plug your self illuminated material into a rayswitch material (direct visibility, reflections, refractions), and plug a different material (e.g. grey or black) into the GI slot. Checkbox would be a faster solution, but I am not really sure if we need it as it would be one more item in the UI.
-
In both you can plug your self illuminated material into a rayswitch material (direct visibility, reflections, refractions), and plug a different material (e.g. grey or black) into the GI slot. Checkbox would be a faster solution, but I am not really sure if we need it as it would be one more item in the UI.
Ahh yes, that should work too. Forget the checkbox.
-
Actually, what I do to simulate V-Ray's checkbox is to use RaySwitch map instead of RaySwitchMTL. That way it's even easier to set up. Just plug CoronaRaySwitch map into your material's self illumination slot, and set all colors to the color you want your self illumination to be, but set GI color to black :) If it needs to be animated, then use for example CoronaColor map plugged into all the slots except GI slot, so that you don't have to animate all these 3 color swatches individually.
(https://forum.corona-renderer.com/index.php?action=dlattach;topic=18775.0;attach=77137)
-
that's actually a great idea
-
Awesome! :)