Originally posted by

**Bisu**View Post
1024x1 pixels resolution ? Is this your argumentation ? For real ?

What you call shortcuts are fundamental data limitations that permit to use another more efficient algorithm than ray tracing.

In this last explanation you get the point. If you have 2d rays in a 2d space, you can only render a horizontal line of pixels with rays intersection

You described photon mapping but this is not a shortcut, it is a totally different algorithm, in common there is only the fact that all use rays.

The point is that wolfenstein do not use raycasting but something like a scanline and for sure do not use rays like raytracing.

## Comment