Perspective projection?

[abbec]

Hi, this is not so much of an issue as it is a question.

In the mesh example here you use nalgebra to create a perspective projection matrix. Looking at the nalgebra code here though, it seems like this is creating a matrix for OpenGL NDC (depth -1 to 1), not Vulkan NDC (depth 0 to 1) and I thought gfx-hal was based on Vulkan conventions. Am I missing something here or how does this work? It seems like it would map objects on the near plane to -1 in clip space?

[zakarumych]

This can actually be the case, but the only downside is that actual near plane becomes bit farther, so it is unnoticed in the example.

[abbec]

Okok, yeah it would not really cause any major issues of course, thanks!

[zakarumych]

IIRC you can set whatever depth bounds in vulkan
gfx-hal sets [0, 1) by default.