The new hair shader looks really good, and the new AA sample system is very impressive. However I am finding the new hair system to be extremely memory intensive. I have a 580 3gb card, and i can no longer render hair with the same settings as I could in 2.68. It is really eating up my Vram to the point where I don’t think that I can render a full head of hair on my GPU :eek:
I am hoping that the answer lies in the new hair settings, and I hope that someone here who is more knowledgeable then I can help me understand why this is. Even when I cpu render the hair, it is eating up 4 GB of ram at 200 display children per strand on only 200 emissions and 3 segments.
At present I i have primitives set to Triangles and Ribbons.
Update - It is not just the hair that is causing this problem
If I take an old file and render it in Path tracing I see 530mb, then when I switch it to branched it changes to 936mb. However switching it back to Path Tracing does not = a reduction and it stays at 936mb. And not just with hair either… it is like this with any scene.
Hmmm… I am not sure if I am liking this. May have to switch back to 2.68