Figure 5.9 I thought the plane rendering of per-pixel shading version was wrong.

[PhilianZ]

https://www.realtimerendering.com/figures/RTR4.05.09.png
The left top image appears weird, but as the book mentioned, this column represents per-pixel shading and the result is right. I know the teapot comparison is clear and easy to distinguish right and wrong. But the rendering of the plane got me confused.

[erich666]

Thanks for writing, and I sort of see what you mean - we don't really show how shading is getting done per pixel here.

Do you have any suggestions for what might make it clearer? I'm coming up a bit blank on how to make a better figure here (might mean an entire rewrite of the figure).

[erich666]

I guess I'll keep this one open, as something to consider for the next edition. Ping on any ideas to improve it.