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Support,
I just purchased a new machine and running 3ds max 2022 ...VRay 5 update 2.2.
I am loading in my old 3dsmax files created created in 3ds max 2014 using VRay 3.5 into 3dsmax 2022 with VRay 5 update 2.2.
I am using the Daylight system with VRay Sun which sets up a DefaultVRaySky in the Environment Map...Skylight set to NO Skylight as well. VRay Sun is Invisible.
When using VRay 3.5 I always checked Sub pixel Mapping and Clamp Output.
I know this is clamping the white values and is a "Hack" to remove Fireflies but it worked for me and I did not see any Fireflies in my renders.
This option "Clamp Output" is now Removed from VRay 5...I have been told by support that this option has been removed.
As a result...I am now seeing Fireflies a lot.
I am not that Technical but I will try to explain.
I believe that when using Reinhard...the white values are being blown out...so you get fireflies.
Whether you use VRay Sun or an HDRI you WILL get Fireflies!...you just don't see them as much in an HDRI..probably because the image has much more of a dispersion of white intensity values than using VRay Sun....but they are present around the edges of the glass and in
an animation you will see it clearly.
See below.
PrtScn_HDRI_Reinhard.jpg
PrtScn_VRay_Sun_Reinhard.jpg
That was the purpose of the Clamp Output option in VRay 3.5...this option prevented the White values from going too high in value and clamped the image so that you
would not get Fireflies....though I agree clamping the image is not the best and causes other issues...for example you can't use Lens Effects because you don't have the bright white values anymore.
This was a quick fix to solving the Firefly issue.
I rather have a render that doesn't have fireflies in it having a render with a ton of white specs flickering all over the place.
This is what I have found...which is depressing!
When you have ANY shader that has less than 1.0 in glossiness...probably between .85 and 1.0...fireflies will occur...
I emailed this problem to Support and the answer I got was to Lower the glossiness!
I have to be honest...I am really shocked that more people are NOT talking about this problem...and shocked that VRay does NOT have a fix for this issue.
To either sample those hot spots or something...Changing the shaders to go below .7 is not a fix!...doing this changes the look!
Denoiser does nothing!
Subpixel Sampling does nothing!
Its in the Shader when using Reinhard.
Vlado and everyone must know this...So what's the Solution?
This is Rendering 101....how can ANYONE not see this in their renderings...its very clear and obvious!
When using ANY Rendering engine its one the Basic Questions I always ask myself:
How does it solve for Chatter, Noise, anti-aliasing, GI Flicker, and Fireflies?
And what are the costs to solving these issues? What are Rendering times looking like to solve these issues?
Pretty Basic Questions...
Please get back to me ASAP.
Much appreciated...
thanks,
Ed
I just purchased a new machine and running 3ds max 2022 ...VRay 5 update 2.2.
I am loading in my old 3dsmax files created created in 3ds max 2014 using VRay 3.5 into 3dsmax 2022 with VRay 5 update 2.2.
I am using the Daylight system with VRay Sun which sets up a DefaultVRaySky in the Environment Map...Skylight set to NO Skylight as well. VRay Sun is Invisible.
When using VRay 3.5 I always checked Sub pixel Mapping and Clamp Output.
I know this is clamping the white values and is a "Hack" to remove Fireflies but it worked for me and I did not see any Fireflies in my renders.
This option "Clamp Output" is now Removed from VRay 5...I have been told by support that this option has been removed.
As a result...I am now seeing Fireflies a lot.
I am not that Technical but I will try to explain.
I believe that when using Reinhard...the white values are being blown out...so you get fireflies.
Whether you use VRay Sun or an HDRI you WILL get Fireflies!...you just don't see them as much in an HDRI..probably because the image has much more of a dispersion of white intensity values than using VRay Sun....but they are present around the edges of the glass and in
an animation you will see it clearly.
See below.
PrtScn_HDRI_Reinhard.jpg
PrtScn_VRay_Sun_Reinhard.jpg
That was the purpose of the Clamp Output option in VRay 3.5...this option prevented the White values from going too high in value and clamped the image so that you
would not get Fireflies....though I agree clamping the image is not the best and causes other issues...for example you can't use Lens Effects because you don't have the bright white values anymore.
This was a quick fix to solving the Firefly issue.
I rather have a render that doesn't have fireflies in it having a render with a ton of white specs flickering all over the place.
This is what I have found...which is depressing!
When you have ANY shader that has less than 1.0 in glossiness...probably between .85 and 1.0...fireflies will occur...
I emailed this problem to Support and the answer I got was to Lower the glossiness!
I have to be honest...I am really shocked that more people are NOT talking about this problem...and shocked that VRay does NOT have a fix for this issue.
To either sample those hot spots or something...Changing the shaders to go below .7 is not a fix!...doing this changes the look!
Denoiser does nothing!
Subpixel Sampling does nothing!
Its in the Shader when using Reinhard.
Vlado and everyone must know this...So what's the Solution?
This is Rendering 101....how can ANYONE not see this in their renderings...its very clear and obvious!
When using ANY Rendering engine its one the Basic Questions I always ask myself:
How does it solve for Chatter, Noise, anti-aliasing, GI Flicker, and Fireflies?
And what are the costs to solving these issues? What are Rendering times looking like to solve these issues?
Pretty Basic Questions...
Please get back to me ASAP.
Much appreciated...
thanks,
Ed
