Indigo Renderer Forum

Without checking "Emission scale" in Blendigo the default values that get exported are:
Power: 1500.0
Gain: 1.00 * 10^0

This gets exported as:
When setting the check mark at Emission scale one can choose to use different physical units such as lumen [lm] candela [cd] or lux [lx]. So I chose:
Value: 1.68 *10^2
Unit: lm

However, that also gets exported as exactly the same thing. If this in not a bug then it is very counterintuitive and would deserve a little explanation.

Software Versions:Blender 2.72a, Blendigo 3.8.25.0, Indigo 3.8.26

Another huge blendigo issue: light layer settings from Blender not making any difference in Indigo. The panel seems to be completely broken. If you devs are thinking about fixing that, I'd love it if you'd include the ability to change RGB/Blackbody values for the light layers as well.

Sorry for hijacking the thread.

Headroom wrote:Without checking "Emission scale" in Blendigo the default values that get exported are:
Power: 1500.0
Gain: 1.00 * 10^0

This gets exported as:

Code: Select all

<base_emission>
	<constant>
		<uniform>
			<value>1500.0</value>
		</uniform>
	</constant>
</base_emission>

When setting the check mark at Emission scale one can choose to use different physical units such as lumen [lm] candela [cd] or lux [lx]. So I chose:
Value: 1.68 *10^2
Unit: lm

However, that also gets exported as exactly the same thing. If this in not a bug then it is very counterintuitive and would deserve a little explanation.

Well, emission scale is not a material property (it's just represented as one in blendigo).
It scales emssion, regardless of spectrum type and magnitude of that spectrum.

Emission scale is a per material property on models.

You could look at the technical reference p 97 for details.

Aha. More of this puzzle emerges. Thanks for the tip. I can see now why it was implemented like this in the Blendigo interface but it is pretty misleading.

As you already mentioned some of the scaling values depend on surface area (lux for example). No surface without object. On the other hand it can be argued you can't really have an object without materials in Indigo.

I'll comment on the side effect of this in the LED thread.



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Also, I can confirm Oscars observation that the light layer gain settings in Blendigo have no effect when exported to indigo.


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