Glare problems

[chocochoc]

Hi,

I'm experiencing problems with aperture diffraction.

I compute one scene at different resolutions,

2554 x 1240 works


5108 x 2480 there is no glare at all and the aperture diffraction checkbox doesn't change a thing to the image:


Why is this happening ? How can I solve this ?

[OnoSendai]

Hi,
At very high resolutions, aperture diffraction may fail (due to not enough mem) and be disabled. Check the render log for any messages.

[chocochoc]

Hi OnoSendai,

Here the log :

"ERROR while performing aperture diffraction: Failed to allocate buffer."

So I guess that's it....I knew I should have taken 16 gb of Ram !