finally got it working in openCL:
Attachments in this post:
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/20241412/28/24/image.png
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/20241412/28/24/CAMERA_PROJECTION_COPS_OCL.hipnc