Author Topic: Adaptive enviro sampler playground!  (Read 22830 times)

2020-05-26, 01:56:39
Reply #45

cecofuli

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Hello,

this is a very simple scene, but v5.0 with Portal is much, much better...
I also reset all parameters, but the result is the same. Noise is more evident and fireflies everywhere...
Corona Sky (Hosek) + Corona Sun
1 minute render time with an i7 970.



« Last Edit: 2020-05-26, 02:04:47 by cecofuli »

2020-05-26, 10:03:33
Reply #46

tallbox

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Hello,

this is a very simple scene, but v5.0 with Portal is much, much better...
I also reset all parameters, but the result is the same. Noise is more evident and fireflies everywhere...
Corona Sky (Hosek) + Corona Sun
1 minute render time with an i7 970.


We have the same observations with the latest delay build, on top of the random crashes and freezes.
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2020-05-26, 13:39:54
Reply #47

rowmanns

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Hi,

Thanks, we will look into this!

Rowan

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2020-06-08, 07:53:51
Reply #48

cecofuli

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2020-06-30, 04:04:42
Reply #49

cecofuli

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Hello,

here my new test with DB 18 June, with 5 minutes rendering time (i7 970 six cores)
I know that 4K Cache is under optimization =) but, why not to test it?
So, we can compared the improvements.

---------------------
(*) CoronaSun + CoronaSky (v5.0)
(*) CoronaMtl light gray
---------------------


(*) v5.0 + Portal has the best quality (less noise and no fireflies).

(*) v6.0 + UHD has some fireflies. NL is a bit higher.

(*) v6.0 + 4K has absurd Precomp time (x25 times = 2 seconds vs 50 seconds).
(*) v6.0 + 4K has very strange noise under the balcony.
(*) v6.0 + 4K has  some fireflies as with UHD Cache.
(*) v6.0 + 4K has the higher noise level.


2020-06-30, 10:09:00
Reply #50

romullus

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Why is the colours so much different in 4K version? Did you use new sky model? Can you repeat the test with same sky model, or HDRI? Maybe also include PT+PT version for comparison?
I'm not Corona Team member. Everything i say, is my personal opinion only.
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2020-06-30, 15:22:04
Reply #51

maru

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Just a heads-up @cecofuli: in the upcoming daily build we will have new optimized 4K Cache (including some fixes based on your reports), so we will re-do the tests and see how it compares. As usual, you are welcome to conduct your own tests, and send us your scenes for investigation.
Thanks! :)
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2020-06-30, 15:44:49
Reply #52

cecofuli

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Hello romullus,

--- CORONA SKY (v5.0) ---

I used the old v5.0 Sky & Sun, since I wanted to compare v5 and v6.
I did a lot of test this morning with v6.0 and:

(*) PT and UHD give me the same exact result (except for the noise, obviously).
(*) 4K is very different (as lighting) from PT and UHD Cache.
(*) 4K produces strange noise under the balcony.
(*) 4K is very slow!





--- HDRI VERSION ---

I also tried CoronaSky + CoronaSun vs HDRI.
Here you see the HDRI version:

(*) PT and UHD give me the same exact result (except for the noise, obviously).
(*) 4K is very different (as lighting) from PT and UHD Cache.
(*) 4K doesn't produce any strange noise and the fireflies are much less (good).
(*) 4K is very slow!

So, I think that something is wrong in the 4K Cache + CoronaSky/Sun









2020-06-30, 15:46:52
Reply #53

cecofuli

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maru:

I think Rowan has the source file =)
« Last Edit: 2020-06-30, 16:26:07 by cecofuli »

2020-07-22, 12:19:53
Reply #54

cecofuli

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Ok, I installed the new DB (21 July) and nothing changed :/ ...

4K Cache is still super slow compared to UHD Cache in this simple scene. With my I7 970, 4K is x14/15 times slower.

To make 4K faster as UHD Cache, I need to change the 4K Quality to 0.1.




Also, I still see different lighting in the scene I posted here. Using 4K Cache, the interior is darker. With PT+PT or PT+UHD Cache I can get the same, identical result.

2020-07-22, 13:07:53
Reply #55

Ryuu

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Thanks for the testing. We're still tweaking and optimizing the 4K cache, it should be much better in next build.

2020-07-23, 07:04:27
Reply #56

cecofuli

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Hello, Ryuu,
yes, 4K needs optimization.
Could you try exactly with this scene (the corridor you see in my previous message)?
I installed the new DB (21 July) to my 1 year old laptop. It's an i7 8750H (six cores). It's 2.5X faster than one of my old desktop PC (i7 970- six cores too).
In fact, I have almost zero seconds "Precomp time" using UHD Cache and 6-7 seconds with 4K Cache, when I had 15 seconds with my i7 970 using 4K and only 1 second with UHD  (exactly 2.5X slower).
In IR, with laptop, I have 1 FPS with 4K and 10 (yes, 10!) FPS with UHD Cache.
So, I think something is wrong in the 4K Cache.

Obviously, with a 64 CPU core, 4K cache will be super fast, but that' not the point  ^__^


« Last Edit: 2020-07-23, 07:13:50 by cecofuli »

2020-07-23, 09:52:26
Reply #57

rowmanns

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Hi cecofuli,

Thanks for the scene, we are already aware of this issue and we are investigating a fix for it.

Cheers,

Rowan

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Send me your scene!

2020-07-23, 09:56:46
Reply #58

cecofuli

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Thank  you Rowan =)

Here another test I did.
The more RGB white color, the slower the 4K Cache Precomp time.


2020-07-30, 10:43:59
Reply #59

cecofuli

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