// Used for 2D rendering, Y is down
// orthoScale = 1.0f / pixelsPerTanAngleAtCenter
// orthoDistance = distance from camera, such as 0.8m
public static ovrMatrix4f GetOrthoSubProjection(ovrMatrix4f projection, ovrVector2f orthoScale, float orthoDistance, float eyeViewAdjustX)
{
return new ovrMatrix4f(ovrMatrix4f_OrthoSubProjection(projection, orthoScale, orthoDistance, eyeViewAdjustX));
}
private static extern ovrMatrix4f_Raw ovrMatrix4f_OrthoSubProjection(ovrMatrix4f projection,
ovrVector2f orthoScale,
float orthoDistance,
float eyeViewAdjustX);