"Undersampling" filtering option causes game to fail to render under opengl1.3

[userse31]

Minetest version

5.3.0

OS / Hardware

Operating system: Debian 11.6 linux 5.10.0-20-686
CPU: (Almost certainly doesn't matter but...) Pentium M @ 1.7Ghz

GPU model:Intel 82852/82855GM
OpenGL version: 1.3

Summary

When running under opengl 1.3 the game fails to render when the "undersampling" option is set to a value larger then 1.

Steps to reproduce

1.) Insure minetest runs under opengl 1.3

2.) In the "minetest.conf" file set "undersampling" to "2" or larger.

Please note: undersampling works properly under opengl 3.0. This is not an issue with running under non-longmode (64bit) linux.

Possible solution: Issue a compatibility warning about "undersampling" when running under opengl1.3.

[TurkeyMcMac]

Could you test that the bug still exists with the most recent version of Minetest (and Irrlicht)?

[rubenwardy]

As said, Minetest 5.3 is not a supported version. Please test with 5.6.1. You can get it through Flatpak if your distro's repos are outdated