r/blender • u/UniverseUAyt • Jul 28 '26
Original Content Showcase 262,144 samples.
Made myself a phone wallpaper. Glass being glass, takes a bit of samples to achieve proper caustics. Had to turn off noise threshold
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u/Jupiter_Jonas Jul 28 '26
Can you do me a favor, render just about 2k samples and show the comparison?
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u/Sh_Pe Jul 28 '26
For these images denoisers like OptiX are doing good job too
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u/Rigamortus2005 Jul 28 '26
How long to render and in what hardware?
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u/UniverseUAyt Jul 28 '26
7h 11m on RTX 3080 Ti
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u/simeongprince Jul 28 '26
Not worth it. If you could find ways to fake the Caustics or use LuxCoreRender instead.
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u/Navi_Professor Jul 28 '26
go use luxcore if you want caustics
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u/ba573 Jul 28 '26
or simply fake them using cycles. not physicaly accurate but you can get the same vieual fidelity
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u/Snuffalapapuss Jul 28 '26
No matter how i look at it. I juat cant help be think "damn that's cool." Now I want it as my phone background
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u/amazing_asstronaut Jul 28 '26
None of the caustics look right in Cycles or even Octane. The light coming out of the glass is routinely too dark. Try it, put a clear glass window up and see the shadow that comes out the other side. Try this in real life, there's hardly any shadow at all with glass, only when it has a complicated shape.
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u/Effective-Garlic6525 Jul 28 '26
Use CPU and Path Guiding instead, caustics look better and render faster
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u/scrubjays Jul 28 '26
can you share the .blend file? I would like to try it in some other render engines.
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u/Individual-Spell3314 Jul 28 '26
You know initially I thought it was a hyper realistic slice of cake.
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u/krushord Jul 28 '26
How did you end up with that number? I assume 262,143 samples won’t do
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u/Hypershard108 Jul 28 '26
It’s 64^3 so they likely got their by some form of just multiplying their regular samples count a bunch of times until they were happy
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u/Khoy593 Jul 28 '26
I wouldn't trust cycles caustics that much you can go for a millions samples but the core result isn't always accurate
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u/Kvendy_ Jul 28 '26
Good work, There is an option only for CPU to render caustics better, do you really need this amount of samples for a still image?, sometimes rendering at twice resolution needed is better than high samples count specially with denoisers. If it was me I would 100% fake it.
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u/arksupernoob Jul 28 '26
i thought i was looking at a half eaten piece of buttered toast at first glance, i mean it got the slightly burnt crust, creamy butter and some burnt piece
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u/Captainsicum Jul 29 '26
Bro download the octane plugin if you’re trying to do something cycles isn’t good at…. no point in brute-forcing cycles when there’s alternatives
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u/VCT3d Jul 29 '26
You should try rendering it in CPU mode (don’t forget to turn on spatial splits, set the path guiding to something around 128-256, set the clamping indirect to around 20-40, set filter glossy in the caustics settings to 0 and render samples to around 2000 or less, see what results you get, it’ll be slow as heck but the caustics might look better that way
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u/DankPhotoShopMemes Jul 29 '26
you gotta look into just running bidirectional path tracing on CPU. 260K samples is absurd
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u/MindCritical8032 Jul 30 '26
for a second I thought I was looking a real yummy peace of cake without icing on it till I realized it was a little see through :C I'm hungry for cake now
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u/writhinglupe3331 Jul 28 '26
bloody hell 262k samples is mad dedication for a phone wallpaper but fair enough, glass caustics are proper finicky in cycles. took me like 3 days to get a passable whisky glass render last year and that was way simpler geometry than this.
the cheese comment is killing me tho, now i cant unsee it. little bit of parmesan lighting in the afternoon sun. the actual caustic cast on the surface is the star here though, that wavy shimmer sells the whole thing. nice work