On 26.07.2006 14:31, H. Verbeet wrote:
However, you do know the register into which the output position will be written by the VP. Could flipping the Y of the output position at the very end of the VP work?
Well, you can't really do that, since it's not guaranteed the mvp matrix will only be used for position transformations. A shader could use it for eg. lighting calculations.
I thought more along the lines of "flip result.position.y", not changing the MVP matrix.
-f.r.