Trying to get a freebie prop to glow in iRay like it shows in the product page
nomad-ads_8ecd56922e
Posts: 1,960
I recently placed a freebie sci-fi computer prop (Portable Computer, by DanGer, over on ShareCG) into a scene and went to render it in Iray, but it came out way dimmer than what is shown in the images on the page it came from. In viewport, it shows a hint of a glow, but when rendered its coming out the same level of ambiance as the rest of the scene. I.e. it shows like its merely being lit by the ambiant light around it, the same as the furniture and walls in the scene are. It is supposed to look like the keyboard and the monitor display are holographically projected, but without the glow, that just doesn't come across in the image.
I converted the shaders in it over to Iray by applying the Iray Uber Base to everything (which prompty killed the slight, seaming-glow that it had) and then I tried setting something manually under Emission for each of the relevant parts. Basically, I set something other than black on the Emission Color, and then over subsequent test renders I started raising the Luminance value up and up, but while the relevant parts of the prop now showed more glow about them, the higher I pushed the Luminance, the less vivid and less sharp the images on the video screen became, as if there was a white fog clouding over the image on the monitor. I had it all the way up to 7000 Luminance before I put the project aside.
Evidently I must be doing this wrong.
Daz 3D is part of 
Connect
DAZ Productions, Inc.
7533 S Center View Ct #4664
West Jordan, UT 84084
Licensing Agreement | Terms of Service | Privacy Policy | EULA
© 2025 Daz Productions Inc. All Rights Reserved.
Comments
Try putting the diffuse/base texture map in the Luminance and Emmisive channels.
Yeah, that seems to have solved it. Thank you.
Neat idea.... did a little experimenting. Used the geometry editor in DS to split the object in 3 parts (base, screen, keyboard). This enables some contorl over the size of the keyboard and the size/distance of the screen. Used the 'glass' shader as a base for the keyboard and screen, added the image maps to 'transmitted color' and 'Emission color', set 'glossy layered weight' to zero (to avoid reflections of other scene objects) and a very low opacity value (to avoid that the projections themselves cast a visible shadow when lit by other lights in the scene).
Maybe nor perfect yet... but getting there......
Kewl, do keep me posted as to how that's going. :D
A little side-tracked atm, but if there are improvements, I'll post....