These textures could be hacked and referred to that single transparent grid texture. My final release of the BKMODS CSS hack to the public included a complete directory structure covering most of the environmental textures for all the default maps. This meant that the distributability was high as I could keep the file sizes low. I only ever needed to change the VMT files to refer to the a single blue semi-transparent grid texture. The source engine at the time utilized two files for every individual texture, a VTF - Valve Texture File that contained the image, and a VMT - Valve Material Type which was a small text file the source engine referred to for the location of the texture on disk and all the properties of it. Valve Anti-Cheat will not detect content hacks such as invisible wall textures or bright-colored player models. The material wall hacks never were detectable and while there was some skepticism in the community, Valve released this statement on their developer blog which calmed some nerves: These were high-risk and inevitably detectable. Prior to this, hacks were dodgy executables that hooked your game client (like HL2HOOK) and gave your things like aimbot, walls, anti-recoil, etc.

The blue texture was included in the original iteration of the hack to go along with the blue-branded theme I was trying to achieve with BKMODS at the time. It started a trend of new hacks coming out which did similar things. The first iterations were only released on my freehosted vbulletin website and downloaded through MEGAUPLOAD. I came up with the idea while playing ScoutzKnivez and the first iteration of my hacks replaced the sandstone and plaster textures of that map to glass as a proof-of-concept.

I applied the method of installing custom skins for guns by instead replacing the textures on walls and floors to glass or a semi-transparent material. I authored hacks and hosted a modest community almost a decade ago called which started a new wave of safe and VAC-proof wall hacks. I AM MERELY HERE FOR STORY TELLING, THESE METHODS WILL NO LONGER WORK I'm going to attempt to tell you a brief story about my history of hacking CS:S. I believe I am the first person that inevitably prompted Valve to enforce sv_consistency, a command that checked to see if certain material files (skins) were consistent with the host, by default on all CS source servers. I deeply consider CS:S my golden era of gaming. Please forgive me if this is slightly off topic, but this goes back some time during my days of Counter-Strike: Source gaming, roughly 9 years ago.

Counter strike source wallhack textures