Display.ResolutionMode is the window (PSP, Scale, Custom, or Desktop). Rendering.InternalResolutionMode is the GE render target, with the same four choices. Desktop uses the monitor on Windows and on Linux. Rendering.TextureLodBias shifts texture mip selection; negative values keep textures sharper at a distance.

Linux

The native build uses Vulkan for the GE and SDL2 for the window and audio. It needs glslangValidator, plus the Vulkan, SDL2, and FFmpeg development packages. The Linux build also compiles a small tool that packs lcs/host/font5x7.txt into the F10 menu font. The Windows build does not run that step.

lcs/scripts/build_linux.sh
lcs/scripts/play_linux.sh

That build compiles lcs/host/vulkan/ge.vert and ge.frag to SPIR-V with glslangValidator. Editing either shader rebuilds it into LCSNative.

lcs/config/LCSNative.ini is shared with Windows, so the checked-in setting stays Backend=DirectX12. On Linux that value selects the Vulkan GE. Backend=Vulkan selects it explicitly, and any other backend name keeps the software rasterizer. LCS_VULKAN_VALIDATION=1 turns on the Khronos validation layer and prints its warnings and errors.

Docker

You also can utilize Docker to build the Linux version.

cd docker
./build.sh

Available options:

        archlinux       compile the source code on Arch Linux
        debian          compile the source code on Debian

Usage: ./build.sh <option>

That way you will get a pre-confugred build environment which also utilzes ccache for faster building times.

License

MIT, see LICENSE. Third-party notices: lcs/THIRD_PARTY.md.