Loss of Detail in Render Iray vs 3Delight

BKPhoenix

How do I get the "Iray Sample" to look like the 3Delight Sample"? As you can see, render the image using the Irray engine there is a lot of loss of detail in the suit as opposed to when I render the image using 3Delight.

I am extremely new to 3D Art.

Thanks in advance.

Catherine3678ab

BKPhoenix said:

How do I get the "Iray Sample" to look like the 3Delight Sample"? As you can see, render the image using the Irray engine there is a lot of loss of detail in the suit as opposed to when I render the image using 3Delight.

I am extremely new to 3D Art.

Thanks in advance.

The 3Delight and Iray shaders work very differently. For the Iray materials, check through the various dials for bump, displacement, cutout [instead of opacity] which go by some different names and amounts. {depends upon the shaders used}. Apply the correct images into the various slots and the details will return.

BKPhoenix

Ok. So the materials for the Suit need to be created with Iray rendering in mind, like hair and skin to render correctly?

Found the info. Thanks for the help! 

chris-2599934

Select the suit, and open up the Surfaces tab. Click on the surfaces.

Right at the top, it tells you which shader the surface uses. If it's a 3Delight item, it probably says "Shader: Daz Studio Default." It needs to say "Shader: Iray Uber."

To change shaders, select all the surfaces in the surface tab, then in your Content Library run "DAZ Studio Formats > My DAZ 3D Library > Shader Presets > Iray > Daz Uber > !Iray Uber Base."

(Actually, while you're there, right click on !Iray Uber Base and choose "Create Custom Action..." That will add it to the menu, because you use it all the time and it's a real pain to have to drill down to it.)

Now you have your materials translated to iray, it's time to go looking for that detail. Check out the "Base Bump," "Normal Map" and "Displacement Strength"

If your material has a displacement map defined, that may very well be the cause of your missing detail. Iray doesn't handle displacement in quite the same way as 3DL. To get it to show up, you generally have to increase the "SubD Displacement Level" - but high levels can be expensive in terms of render time.

An alternative, if the surface doesn't currently have a normal map is to find the image used to provide the displacement map and convert it into a normal map. You can do that online here: https://cpetry.github.io/NormalMap-Online/ . Save the converted file somewhere (don't overwrite the original displacement file!) and apply it as a normal map. It's not quite as good as displacement, but may be good enough for this purpose.

Theme3D

The specular highlights in 3delight are fake. You should get real area lights with iray, transform yout point or spots into area lights.

Them go to the iray material and use glossiness to achive the same effect you see in the 3delight.

Sven Dullah

Theme3D said:

The specular highlights in 3delight are fake. You should get real area lights with iray, transform yout point or spots into area lights.

Them go to the iray material and use glossiness to achive the same effect you see in the 3delight.

Define fake!

Theme3D

Sven Dullah said:

Theme3D said:

The specular highlights in 3delight are fake. You should get real area lights with iray, transform yout point or spots into area lights.

Them go to the iray material and use glossiness to achive the same effect you see in the 3delight.

Define fake!

The highlights in 3d are suppost to be reflections of real lights. When point lights and spots lights were used back in the day, the way to fake the lights reflection (since they were just points in 3d space) was to fake the highlights using a fake reflection, that you could alter its size and some properties, and looks like a ball of light. Thats why they are fake, these are not real reflections of the light.

Sven Dullah

Theme3D said:

Sven Dullah said:

Theme3D said:

The specular highlights in 3delight are fake. You should get real area lights with iray, transform yout point or spots into area lights.

Them go to the iray material and use glossiness to achive the same effect you see in the 3delight.

Define fake!

The highlights in 3d are suppost to be reflections of real lights. When point lights and spots lights were used back in the day, the way to fake the lights reflection (since they were just points in 3d space) was to fake the highlights using a fake reflection, that you could alter its size and some properties, and looks like a ball of light. Thats why they are fake, these are not real reflections of the light.

Fair enough;) But one could argue wether a spot/pointlight with a meter radius is a good representation of a real life light scenario.

nemesis10

Sven Dullah said:

Theme3D said:

Sven Dullah said:

Theme3D said:

The specular highlights in 3delight are fake. You should get real area lights with iray, transform yout point or spots into area lights.

Them go to the iray material and use glossiness to achive the same effect you see in the 3delight.

Define fake!

The highlights in 3d are suppost to be reflections of real lights. When point lights and spots lights were used back in the day, the way to fake the lights reflection (since they were just points in 3d space) was to fake the highlights using a fake reflection, that you could alter its size and some properties, and looks like a ball of light. Thats why they are fake, these are not real reflections of the light.

Fair enough;) But one could argue wether a spot/pointlight with a meter radius is a good representation of a real life light scenario.

Granted... buy iray reflections are reflections and the specular highlights in 3dl are paintings of reflections.  There are reflections in 3dl but often artists took shortcuts and painted in reflections in things like metal, cornea's, and hair highlights...