: The cheat often uses the glDepthFunc function. Normally, OpenGL only draws objects in the foreground. By forcing the depth function to GL_ALWAYS , the game renders all elements—including player models—regardless of whether they are behind a wall.
: Cheaters replace the standard library with a custom version that includes the "wallhack" logic. This file typically resides in the same folder as hl.exe . opengl wallhack cs 1.6