https://forums.autodesk.com/t5/arnold-for-cinema-4d-forum/transparent-background-in-gpu-mode-arnold-c4d/m-p/13936071#M10283 <P>how can i get a transparent background while using arnold gpu render, in transparent areas i get a black background. if i switch it go arnold cpu mode then it works fine. since cpu is slow so i want to use gpu mode. i am using arnold version 7.3.6 with cinema 4d 2025</P> Mon, 08 Dec 2025 08:55:09 GMT chandan1nift 2025-12-08T08:55:09Z https://forums.autodesk.com/t5/arnold-for-cinema-4d-forum/transparent-background-in-gpu-mode-arnold-c4d/m-p/13936071#M10283 <P>how can i get a transparent background while using arnold gpu render, in transparent areas i get a black background. if i switch it go arnold cpu mode then it works fine. since cpu is slow so i want to use gpu mode. i am using arnold version 7.3.6 with cinema 4d 2025</P> Mon, 08 Dec 2025 08:55:09 GMT https://forums.autodesk.com/t5/arnold-for-cinema-4d-forum/transparent-background-in-gpu-mode-arnold-c4d/m-p/13936071#M10283 chandan1nift 2025-12-08T08:55:09Z https://forums.autodesk.com/t5/arnold-for-cinema-4d-forum/transparent-background-in-gpu-mode-arnold-c4d/m-p/13936738#M10284 <P>There's black in both, and they are rendered from different camera angles, so I can't tell what's going on. What's the background?<BR />My own simple test scene works ok with the latest Arnold.</P> Mon, 08 Dec 2025 18:04:36 GMT https://forums.autodesk.com/t5/arnold-for-cinema-4d-forum/transparent-background-in-gpu-mode-arnold-c4d/m-p/13936738#M10284 Stephen.Blair 2025-12-08T18:04:36Z https://forums.autodesk.com/t5/arnold-for-cinema-4d-forum/transparent-background-in-gpu-mode-arnold-c4d/m-p/13937460#M10286 <P>Here you can see the difference, the angle is same in both. But see the difference in the alpha and final render. i am getting black where i supposed to get transparent background like in the cpu mode. i also attached the c4d file. have a look and if possible send it with the solution. you can also see the final renders.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="transparancy problem.jpg" style="width: 400px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1603199i2486AD8CCD7D6402/image-size/medium?v=v2&amp;px=400" role="button" title="transparancy problem.jpg" alt="transparancy problem.jpg" /></span></P><P> </P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="cpu render.png" style="width: 400px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1603201i00669A522D151460/image-size/medium?v=v2&amp;px=400" role="button" title="cpu render.png" alt="cpu render.png" /></span></P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="gpu render.png" style="width: 400px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1603200i74D42DD350D06E27/image-size/medium?v=v2&amp;px=400" role="button" title="gpu render.png" alt="gpu render.png" /></span></P><P>  </P> Tue, 09 Dec 2025 07:59:44 GMT https://forums.autodesk.com/t5/arnold-for-cinema-4d-forum/transparent-background-in-gpu-mode-arnold-c4d/m-p/13937460#M10286 chandan1nift 2025-12-09T07:59:44Z https://forums.autodesk.com/t5/arnold-for-cinema-4d-forum/transparent-background-in-gpu-mode-arnold-c4d/m-p/13989599#M10345 <P>yes how to do it if i want to use it in another application</P> Sun, 25 Jan 2026 06:51:38 GMT https://forums.autodesk.com/t5/arnold-for-cinema-4d-forum/transparent-background-in-gpu-mode-arnold-c4d/m-p/13989599#M10345 chandan1nift 2026-01-25T06:51:38Z