Source SDK 2013 VS2022 Deferred

What is this?

This is a fork of the source-sdk-vs2022 repository merged with SCell555's port of Biohazard90's deferred lighting implementation based on Alien Swarm's deferred shading, via Lambda Wars. I tried to minimize the amount of changes made to the original repository to make it as painless as possible to implement, with some of my own minor tweaks/fixes/workarounds. Still very much a proof of concept rather than a full implementation.

How do I compile this?

It should work out of the box with VS2022. This tutorial uses this repo as its base. I would recommend migrating the shader pipeline to SCell555's Shader Compile tool, but that's up to you.

Notes

• Most things don't work right. Water, alpha masking/transparency, specular, etc. are not particularly functional.
• The server converts existing static lights into light_deferred_global and light_deferred entities on map load, but this is quite rudimentary. The intended use is to build maps based on deferred lighting (see deferred.fgd) from the ground up.
• Lights and shadows flicker often. Disabling visleaf culling (r_deferred_light_visleaf_cull) helps with the lights, but decreases performance.
• This implementation also supports basic, unstable radiosity (r_deferred_radiosity) as well as volumetrics (per-light flag) which actually look alright and don't bug out too much.
• Use the -nodeferred command line argument to disable deferred lighting. This causes some decals to flicker, although they also flicker with deferred lighting on, but in a different way.
• Console commands related to deferred lighting start with r_deferred. I added notes to some of the commands to better explain what they do (as far as I know).
• The repo includes diff patches (in unified format) to possibly help implement the changes to the files from the original repository.
• See the LICENSE file for more information regarding Valve Software's original Source SDK.