psx_retroshader VS UnrealRetroShaders

For Unity you can use - https://github.com/dsoft20/psx_retroshader

It's a PSX shader I found. There's actually three that I know of (1, 2, 3), but I only used the first because it seemed simplest to get running. I'll probably mess with the others down the line, too.

A link to the shader itself

psx_retroshader

There is a PSX shader made by José Guerreiro in 2015. Not saying that's what this is but the results with it come pretty close. It was used in version 103B of Ultrakill. it can be found here: https://github.com/dsoft20/psx_retroshader

// https://github.com/dsoft20/psx_retroshader/blob/master/Assets/Shaders/psx-vertexlit.shader const vec2 base_snap_res = vec2(160.0, 120.0); vec4 get_snapped_pos(vec4 base_pos) { vec4 snapped_pos = base_pos; snapped_pos.xyz = base_pos.xyz / base_pos.w; // convert to normalised device coordinates (NDC) vec2 snap_res = floor(base_snap_res * precision_multiplier); // increase "snappy-ness" snapped_pos.x = floor(snap_res.x * snapped_pos.x) / snap_res.x; // snap the base_pos to the lower-vertex_resolution grid snapped_pos.y = floor(snap_res.y * snapped_pos.y) / snap_res.y; snapped_pos.xyz *= base_pos.w; // convert back to projection-space return snapped_pos; }

However, a big part of the art inspiration for this project is PS1 style graphics. Because of that, I would really like to use this PS1 style shader for Unity.

I don't know if I should add this shader to make the textures look like the ones on PS1 even though petscop clearly doesn't look like this: https://github.com/dsoft20/psx_retroshader

Retro shaders for unreal

For Unreal Engine most people use - https://github.com/DaveFace/UnrealRetroShaders

In the end I gave up trying to migrate this correctly. I searched long and hard and found tutorials / examples on the shaders I wanted to make (link) and a free alternative to Marcis' one (link). I opened these in a later version 4.25 and then tried to copy that BPlogic back to 4.16. Luckily it all worked.