Multi‐Pass shader system

D2GL uses RetroArch's slang (for vulkan) shaders.
 
All included shaders are data\shaders folder in default archive (d2gl.mpq).
You can put extra shader presets (with shaders) in data\shaders folder d2's installation directory and run game with -direct argument.

FSR 1.0 requires opengl version 4.2 or up.
If you are on MacOS (using wine) FSR with 2 passes will not work. Instead use single pass fsr-easu.slangp preset.
Since v1.3.2 FSR 1.0 will work any version of opengl.
 

** Shader with access to previous frame data will not work!
** Becareful choosing shaders with many passes. It might stuck in loop!