/// <summary>
/// Computes updated 'uvScaleOffsetOut' to be used with a distortion if render target size or
/// viewport changes after the fact. This can be used to adjust render size every frame if desired.
/// </summary>
public Vector2f[] GetRenderScaleAndOffset(FovPort fov, Sizei textureSize, Recti renderViewport)
{
Vector2f[] uvScaleOffsetOut = new Vector2f[] { new Vector2f(), new Vector2f() };
ovrHmd_GetRenderScaleAndOffset(fov, textureSize, renderViewport, uvScaleOffsetOut);
return uvScaleOffsetOut;
}
private static extern Matrix4f_Raw ovrMatrix4f_OrthoSubProjection( Matrix4f projection, Vector2f orthoScale, float orthoDistance, float hmdToEyeViewOffsetX);
/// <summary>
/// Used for 2D rendering, Y is down
/// orthoScale = 1.0f / pixelsPerTanAngleAtCenter
/// orthoDistance = distance from camera, such as 0.8m
/// </summary>
public static Matrix4f GetOrthoSubProjection(Matrix4f projection, Vector2f orthoScale, float orthoDistance, float hmdToEyeViewOffsetX)
{
return new Matrix4f(ovrMatrix4f_OrthoSubProjection(projection, orthoScale, orthoDistance, hmdToEyeViewOffsetX));
}
