Module proj 

Projection matrix constructors.

Expects right-handed Y-up view space input.

Each sub-module targets a specific graphics API convention:

• opengl - NDC Z range [-1, 1], Y-up
• directx - NDC Z range [0, 1], Y-up
• vulkan - NDC Z range [0, 1], Y-down

Modules

directx

DirectX and WebGPU NDC convention: Z range [0, 1], Y-up.

opengl

OpenGL NDC convention: Z range [-1, 1], Y-up.

vulkan

Vulkan NDC convention: Z range [0, 1], Y-down.