I am building a model of The General Lee from Dukes of Hazard, and trying to shrink wrap an image with transparent background to the side of the car which works up to the point of rendering. When rendered, it appears that the shadow of the transparency is showing on the car as well as the desired image. I've tried clicking transparency in the render settings with the same result. Any ideas please? TIA
$\begingroup$ $\endgroup$
4 
- $\begingroup$ PS, this is a cycles render image, I've tried it in eevee and it comes out ok, but i want it in cycles. $\endgroup$LastOrders67– LastOrders672025-09-03 21:35:24 +00:00Commented Sep 3 at 21:35
- 2$\begingroup$ Instead of shrinkwrapping it, mix it in the main material itself and use the alpha channel of the image as mix factor. Watch tutorials about creating complex materials and texturing. $\endgroup$Gordon Brinkmann– Gordon Brinkmann2025-09-03 22:09:34 +00:00Commented Sep 3 at 22:09
- $\begingroup$ Welcome. Please use a title that matches the content of the question. It should be descriptive but succinct, unique and identifying, summarizing the issue in such way that anyone searching for a similar problem may easily find it. Use the edit link above, remove anything superfluous, avoid words like "this","issue with" or "question about". Remember, your title is the first thing potential visitors will see, answers you get depend heavily on how inviting it is. See "What is the problem of asking “How do I do this?" $\endgroup$Harry McKenzie– Harry McKenzie ♦2025-09-04 06:46:42 +00:00Commented Sep 4 at 6:46
- 1$\begingroup$ If none of the answers so far work, you might need to post a Blend file that illustrates the problem using blend-exchange.com $\endgroup$K. A. Buhr– K. A. Buhr2025-09-04 18:13:09 +00:00Commented Sep 4 at 18:13
Add a comment |
2 Answers
$\begingroup$ $\endgroup$
1 I suspect that in your Shrinkwrap modifier, you might have the Offset value set to zero.
Try increasing it to a small positive value, like 0.001 (i.e., 1mm above the surface). That should fix the issue.
In my testing, I was able to reproduce the problem with a zero offset (left), which was fixed when I added a small positive offset (right):
- $\begingroup$ Thank you, but it's definitely not the offset, I've had it up to .01 and still the same issue. I will have a look into the positive though since i think it is checked negative, I'll let you know when I finish work. $\endgroup$LastOrders67– LastOrders672025-09-04 07:20:17 +00:00Commented Sep 4 at 7:20
$\begingroup$ $\endgroup$
You can also just disable shadow rays for the object that is shrink-wrapped:
Also make sure you have enough bounces in the light paths for transparent rays in the render settings:
2 should be enough for a single transparent plane, but you can set it to a higher number in case you have a few transparent objects overlapping. It really doesn't affect render times that much.
