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Instead, add tags to the geometry of the reflective and/or transparent objects (like the car windows), and disable the features you don’t want (specular, reflection, diffuse, reflection, specular transmission, diffuse transmission). Make them “0” if you want the HDRI not to show up through transparent objects or in reflections.īut this will cut off those qualities for all objects in the scene, which you may not want. In this case you want to adjust the sliders for (most probably) the transmission and specular contributions of the skydome light. Sorry, you don’t need to add a parameters tag to objects that are already “Arnold” objects, like the Skydome light they are redundant. My deadline is approaching and because of this I’m unable to send the scene to render. Either it’s staring me in the face and I’m a total idiot or not simple at all. I’m very confused and I’ve been searching for a solution for two days. I understand that part but when I add the tag it doesn’t handle primary visibility like for a mesh. I need to have the backplate showing up.Ī quick resolution would be favourable, I will take any advice at this point. The glass surfaces still show the hdr in the bg.

The left side is the hdr skydome and the right side is just a quick mockup of the backplate that should be in the final composite. I added a render with the hdr and the backplate in a mockup to illustrate the point. Is there a way to turn the hdr in the background in a way that it still affects the reflections but the cars glasses are transparent and not show the bg? I thought that a simple switch can help me but it turns out it doesn’t function like that. I used a similar hdr to light the car and used it for my initial renders as a background but for my final sequence i want the background hdr (skydome light) turned off. I worked on the car and while it still needs some kinks worked out I wanted to see it on the backplate that is provided. I have a camera move backplate that needs to feature a car on it. I’m new to the Arnold render world and quite happy with the results it produces.