directional light shadow issue?

[jasonhuang1115]

Hi,

I tried to adjust the Light Angle with corresponding Shadow Rays to get softer shadow for Maya's default directional light but is getting odd-looking shadow. Please refer to the screen cap below.


directional light, light angle: 0, shadow rays: 1.


directional light, light angle: 5, shadow rays: 10.


Vray Rect light for comparison

I have tried cranking up the setting of Shadow Rays or using different Sampler types, but none of them help getting good-looking softer shadow when the directional light is used. Does it have to do with the FastSSS2 shader setting?

[stezza]

if your using the maya directional light you do need more samples if you are using angle of 5 at least 20-30 I would say.
I use the directional pretty much all of the time with a dome light for all our animation scenes and seems to give a good result in all cases.
Dome light needs to have at least 25 subdivs also.

[ivaylo.ivanov]

Yup, there was a problem with FastSSS2 and directional light with soft shadows. It's fixed with revision 13250. You must wait for the new nightly build

[jasonhuang1115]

if your using the maya directional light you do need more samples if you are using angle of 5 at least 20-30 I would say.
I use the directional pretty much all of the time with a dome light for all our animation scenes and seems to give a good result in all cases.
Dome light needs to have at least 25 subdivs also.

Thanks for the tip. Guess like what ivanov mentioned, there is an issue with the FastSSS2. I've tried with higher Shadow Rays value, but the result didn't change a bit.

Yup, there was a problem with FastSSS2 and directional light with soft shadows. It's fixed with revision 13250. You must wait for the new nightly build

Great. Thanks for letting me know.