U/V Flip Mode

Enable or disable U/V flipping on the PVR More...

Enumerations
enum	pvr_uv_flip_t { PVR_UVFLIP_NONE , PVR_UVFLIP_V , PVR_UVFLIP_U , PVR_UVFLIP_UV }

Detailed Description

Enable or disable U/V flipping on the PVR

These flags determine what happens when U/V coordinate values exceed 1.0. In any of the flipped cases, the specified coordinate value will flip around after 1.0, essentially mirroring the image. So, if you displayed an image with a U coordinate of 0.0 on the left hand side and 2.0 on the right hand side with U flipping turned on, you'd have an image that was displayed twice as if mirrored across the middle. This mirroring behavior happens at every unit boundary (so at 2.0 it returns to normal, at 3.0 it flips, etc).

The default case is to disable mirroring. In addition, clamping of the U/V coordinates by PVR_UVCLAMP_U, PVR_UVCLAMP_V, or PVR_UVCLAMP_UV will disable the mirroring behavior.

Enumeration Type Documentation

pvr_uv_flip_t

enum pvr_uv_flip_t

Enumerator
PVR_UVFLIP_NONE	No flipped coordinates.
PVR_UVFLIP_V	Flip V only.
PVR_UVFLIP_U	Flip U only.
PVR_UVFLIP_UV	Flip U and V.