Half Life 1 (Source) Reshade RT Screen Space Path Traced GI & AO 9900K 2080 Ti 1440p

Using Reshade SSGI alpha shader Alpha version available here: ($20 pledge required as of May 2019, free version should be available when it’s done) Source, since I couldn’t get default HL1 running. You have to turn r_drawvgui to 0 to get depth effects to work in Source. I would recommend binding this to a key (both 0 and 1). HUD isn’t drawn in this video so when it freezes its loading and sometimes I enter stuff into the console blindly.