Reflection Shader - does Blur do anything

[mjm]

Ok;  I just got done trying the blur portion of the Plastic reflectivity shader, danged if I can see a difference. What do I not understand?

BLUR Thought experiment.vwx

[Andy Broomell]

It won't do anything unless Blurriness is turned on in your render style. In the case of Custom Renderworks which you're using, click the "Background Render Settings" button in the viewport's OIP and check the Blurriness checkbox:

 

[mjm]

2 hours ago, Andy Broomell said:

It won't do anything unless Blurriness is turned on in your render style. In the case of Custom Renderworks which you're using, click the "Background Render Settings" button in the viewport's OIP and check the Blurriness checkbox:

 

@Andy Broomell, thank you. Had a huge blind spot around this but knew I was missing something.

 

[mjm]

3 hours ago, mjm said:

@Andy Broomell, thank you. Had a huge blind spot around this but knew I was missing something.

 

Yep, thanks again!

[Andy Broomell]

No problem. Note also that blurriness adds render time, which is why there's a checkbox to be able to quickly turn it off when it's not important, and turn it back on for final renderings (or you can create your own Render Styles to take control of this).

 

And while there's a Blurriness "quality" setting, in my experience this doesn't really affect surface blurriness, only translucency blurriness. Instead, the quality/smoothness of the blur effect is controlled by the Anti-Aliasing quality level. Of course higher quality takes longer, but it's also smoother. 🙂

 

[Mike Lamb]

Nice test file mjm, thanks for including it!

[mjm]

3 hours ago, Mike Lamb said:

Nice test file mjm, thanks for including it!

Thanks Mike. I hadn't worked with the blurriness option before that test file. Hugely informative. I used the attached pic as a IRL goal to approach. As yet I have not dug in along the lines @Andy Broomell suggested above.