Radeon ProRender

rprCameraSetFocalLength

Sets camera’s focal length.

The Focal Length setting determines the Field Of View (FOV) for a camera. A small focal length gives a wide-angle FOV. A large focal length results in a narrow-angle FOV. Although any floating point value is acceptable, choices that correspond to physical lens measurements would be logical, because AMD Radeon ProRender emulates real-world camera lenses.

rpr_status rprCameraSetFocalLength( rpr_camera camera,
  rpr_float flength);

Parameters

Parameter Description
camera The camera to set the focal length for.
flength Focal length in millimeters, default is 35 mm.

Notes

Only used with RPR_CAMERA_MODE_PERSPECTIVE.

Return

Returns RPR_SUCCESS in case of success, or RPR_ERROR code if a problem was encountered.

To learn how to handle errors in AMD Radeon ProRender SDK, see Error Handling.