Raymarching Resourcepack

To see the shader, equip the resourcepack, load into a world, and summon a glowing end crystal with a beam. The end of the beam will be the center of the rendered scene.

summon end_crystal x y z {Glowing:1b,BeamTarget:{X:x,Y:y,Z:z}}

make sure to replace the x y and z with your own coordinates.

the scene is rendered using sphere marching

this was a learning project for me, i mostly followed the articles and examples from Inigo Quilez, which are all amazing and you should check them out if you're interested in how it works here:

https://iquilezles.org/articles/

editing the shader

adding shapes

to add new shapes, make sure that the sdf function for that shape is defined, then it is as simple as following the format, setting a position, size, and material in the hit function.

for example, adding a new two unit tall cube with pink material:

o = Add(o, Cube(pos + vec3(-2,1,-3), vec3(1,2,1), 2));

adding materials

in the render function, find the switch on o.type and add a new case. you can change the color there, and apply shadows or sunlight to it.

in the hit function, you can change any object added to the scene to the new material.

dynamic objects

a working prototype is in the pack, just summon an invisible armorstand wearing dirt on its head and it should show up as a sphere in the rendered scene

however, performance of these dynamic objects is pretty bad lol. i thought i could make some sort of sculpting demo with them but fps drops noticeably with just a few.