The vertices operated on are all in the range 0 to 1, not in
Normalized Device Coordinates (-1 to +1). Transforming points in this space
are assumed to have an origin at (0.5, 0.5, 0.5) in a left-handed coordinate
system with the x-axis moving horizontally (positive values to the right),
the y-axis moving vertically (positive values up the screen) and the z-axis
perpendicular to the screen (positive values into the screen).
Extra buffer metadata for performing an affine transformation using a 4x4 matrix. The transformation matrix can be composed with gstvideo.video_affine_transformation_meta.VideoAffineTransformationMeta.applyMatrix.
The vertices operated on are all in the range 0 to 1, not in Normalized Device Coordinates (-1 to +1). Transforming points in this space are assumed to have an origin at (0.5, 0.5, 0.5) in a left-handed coordinate system with the x-axis moving horizontally (positive values to the right), the y-axis moving vertically (positive values up the screen) and the z-axis perpendicular to the screen (positive values into the screen).