Tachyon Shaders do Minecraft 1.21.1, 1.21

Tachyon is a highly customizable shader, with HDR, POM, reflections, Volumetric fog and clouds, shadows, Tonemapping, AO, and many other features. It's optimized to be incredibly fast, often getting higher fps than even light shaders like fastPBR. I designed it to be able to both be a vanilla+ style shader for those who prefer more minimalistic improvements (in this mode it is even faster), as well as a more traditional high-visuals style.

Known Issues

• the end and nether don't have dedicated shaders yet so they're really broken. working on a fix but it's gonna take a bit

Update Status

I know it's been a bit since the last update, I was busy with school and other stuff but now that it's summer break I hope to release the next update very soon! Stay tuned!

Customizability

With every feature a shader adds, there's one more feature you may not want. So Tachyon lets you customize everything. You don't like shadows? Off. You find POM distracting? Off! You can customize Tachyon from just vannilla with shadows, to a full shader with reflections, HDR, ACES tonemapping, POM, etc.

PBR Resource Pack

This shader looks way better with a PBR resource pack, since they provide extra details like how reflective each pixel is or a depth map. My favorite one to use is sPBR, as it remains 16x16 and very true to vanilla.

PVP

This shader is fast enough and not nearly as distracting as others, so it's actually usable in pvp, unlike many others. I know a lot of people (especially people who care about fps a ton) will not use this anyway, but I find that with high profile, visuals preset (and "nice water" under materials turned off as it makes it really hard to see shallow pools in pvp), my fps is consistently at my monitor's max refresh rate.

Credits

This is my first shader, and while I'd love to claim I wrote this all myself with no help, I did look at other shaders' code for reference. Most notably:

• Solas Shader, which I based the clouds and water off of. The noise texture is a direct copy from this shader, so huge thanks to solas.
• XorDevs-Default-Shaderpack for a lot of the basic rendering, as it is basically a shader implementation of vanilla. Some code is very closely copied from this.
• Complementary Reimagined, As I used it as a reference for screen space reflections and DH support.
• IterationT for some POM reference. I am aware that this shader copied a lot of shaders, but I didn't directly copy anything from this shader either.
• This Youtube Tutorial for shadows and other basics for how minecraft shaders work.

Other than the noise texture from solas, and I got explicit permission from Solas' developer for that, I didn't actually copy anything, so it doesn't violate any of the shaders' licenses.