How often do graphics pipelines typically do the divide by extra coordinate step? It seems like it's important to do the division when doing perspective projection, are there other transformations where its important to do the division immediately rather than delaying?
motoole2
The perspective division step is done once for every vertex, in order to go from homogeneous coordinates to 2D coordinates. This is done after all other 3D transformations.
How often do graphics pipelines typically do the divide by extra coordinate step? It seems like it's important to do the division when doing perspective projection, are there other transformations where its important to do the division immediately rather than delaying?
The perspective division step is done once for every vertex, in order to go from homogeneous coordinates to 2D coordinates. This is done after all other 3D transformations.