I come to share with you something a little unusual, and it is a
ReShade compatible with Half-Life 2 and any game with Source Engine!
do not know about you, but it cost me a lot to get this reshade, or at
least one that was compatible with HL2, at least I want to get it,
originally from the Cinematic Mod 2013, I started to see the files and I
realized that they can modify and change to make HL2 look different and with effects that the source would not support on its own.
I have added optional Presets in case you do not like the HQ Bloom or Lens Dirt, there is also a preset that removes both.
Well, create your own Preset, how? easy.
Open the MasterEffect.h as a notebook, and there will be several options that you can use for the HL2.