#archived-shaders

1 messages · Page 110 of 1

quaint grotto
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you mean a replacement type shader?

north rampart
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Similar to what is done in the VFX Graph Spaceship demo

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Right, a replacement sort of, before we where doing a ZTest with a second pass, but now there's no way to do that within shadergraph

quaint grotto
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isnt that done in the visual effects graph

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that spaceship demo was all about that feature

north rampart
frigid zinc
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not everything, someone from unity verified the other day that that particular xray effect wasn't using vFX

quaint grotto
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oh thats probably just ordinary shader stuff

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transparent is drawn after opaque so put them into transparent shader

north rampart
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My first guess was doing a transparent shader with a higher render queue but then of course that's still being clipped by opaque geo

quaint grotto
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oh true, hm thinking

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oh wait i know a video on this

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this guy explains how to do it

north rampart
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Yeah! Went through that one already, the thing is that all that wizardry doesn't really applies in HDRP

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Or at least I couldn't manage to get it run =/

quaint grotto
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ive not used hdrp yet, but cant you use ordinary unlit shaders with it ?

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since its unlit i imagined it would be fine

north rampart
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Unfortunately no =/ pink shaders everywhere

quaint grotto
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oh wow

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i dont know the technicals on that sadly - not sure why an unlit would be incompatible

frigid zinc
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there's an upgrade thing on the menu

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will automatically put the new shaders in place of the old

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and the textures nearly use the same channel order, so the work to change over is minimal

quaint grotto
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does hdrp provide any good debugging tools

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because debugging shaders is a nightmare

frigid zinc
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on par with legacy, which is to say not really heh

quaint grotto
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damn

frigid zinc
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but it does have Shadergraph

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which is like Shaderforge/Amplify shader

quaint grotto
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i want to know how much time is spent on my algorithms vs rendering

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so i can try to improve it

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fourier takes a lot of processing

frigid zinc
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yeah you'd just have to test like you do know

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by rendering a lot of something using it and compare times

quaint grotto
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the only way i can think of to improve it at the moment is reduce the grid detail by distance

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but its not great either way

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i'd need a circular grid aswell

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my documentation is second to none

still carbon
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@quaint grotto to be fair, Compute Shaders aren't Unity's invention, don't blame them :v

quaint grotto
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neither is c# or shaders in general 😛 but the docs are a bit woeful

still carbon
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yeah it's gonna be until stuff starts to stabilize more, can't be spending lots of time on docs for stuff that could be changing frequently 🤷

quaint grotto
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does hdrp change compute shaders?

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i thought they were seperate from all that

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i want to move my fft into compute rather than have it in my vertex shader

still carbon
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they don't change the concept of them, but the helper functions and approach they take can still be in a bit of flux

quaint grotto
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ah i see

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i was not expecting it to be so performant heavy

frigid zinc
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there's a reason most oceans use Gerstner or something a little more performant. 😛

quaint grotto
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yeahh but sea of thieves managed it

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i don't know how

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they must have found some ways to squeeze performance that they refused to share in their paper

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i might email them and see if i can get a reply

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v. unlikely how ever they will reply 😛

frigid zinc
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twofox released his FFT ocean here

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i have a copy it's not bad

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i think there's a newer version later in the thread

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yeah that's it

quaint grotto
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ill take a gander see what he is doing in his

frigid zinc
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last i tried it was on 2017

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i haven't fired it up on 2018

quaint grotto
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oh that uses c# for FFT

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🤢

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that surely isn't faster than vertex shader =/

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ah they used look up tables

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that could be faster

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kinda difficult to really know

frigid zinc
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yeah it's been a long while since i ran it, i forget what kind of perf it had

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doesn't seem horrible but

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it honestly doesn't look that great either

quaint grotto
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yeh i mean most of their resulting pictures dont seem to suggest FFT is needed

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the water is so calm in nearly all examples 😛

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ive not delved into their code fully im wondering if they have not included choppiness and dispersion equations into it as that might explain it

frigid zinc
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yeah

still carbon
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what do you mean by you're using vertex program for it? as in you just have a giant super dense mesh? Or are you actually using tessellation?

quaint grotto
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its less dense the further from the camera with tesselation @still carbon

still carbon
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ok good just making sure lmao

quaint grotto
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but even tesselation adds overhead so ill make one in blender at some point

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as a fixed mesh and move it with camera

still carbon
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you'd still want some tessellation, too dense of a base mesh is a performance hit as well, gotta find a balance

quaint grotto
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how so ?

still carbon
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well, if on a fermi or later nvidia gpu, it has some dedicated units for tessellation, so those are just going to waste if you're going to work with a super dense raw mesh. Plus tessellation can focus detail where it needs to be even if you're rotating your camera different ways, which you're not going to get with a high density mesh

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you can also form better levels of detail/quality settings when doing the deformations through tessellation or compute

quaint grotto
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ah i see

broken field
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honestly, oceans and bodies of water aren't that hard if you know your exact requirements and are willing to settle for compromises... assets for water will always be a bit more crap than they could be due to having to work with absolutely everything and possibly have a bunch of features to sell it rather than precisely what you wanted. So that's why I think it's worth doing your own water, and it's not that hard

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Plus water seems to be the thing that scams people the most

quaint grotto
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water is surprisingly made up only of a few simple concepts

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the animation is definately the harder part - at least for making it look half decent

broken field
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far harder is what happens when you have anything transparent going in and out

quaint grotto
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what do you mean

broken field
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something like ECS for those effects is not a bad idea

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transparent sorting

quaint grotto
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one thing ive not worked out yet is how you do above and below water at the same time

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is that all done in one shader =/

broken field
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when you use something like particle system it can get batched and will either mostly be on top ot behind the water

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with separate rendered particles it's not much of an issue

quaint grotto
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is that just one shader doing both above and below or something else

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i dont even know how you know when you're under the water if there are waves

broken field
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dying light has good water division like that, but GTA V prefers to onyl render above or below, masking the transition

quaint grotto
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ill have to find a paper on it at some point

broken field
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For that sort of effect maybe a post process

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with some fogging etc

quaint grotto
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so its screen based?

broken field
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I think so yes

quaint grotto
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i see

broken field
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the actual triangles of the water are near clipped, nothinghappens there

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it's just a post effect

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draws a little higher and further back than the near clip

still orbit
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Also generally just watch this

frigid zinc
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Crest has meniscus control like that

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you could see how they did it

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pic I took from crest a few days ago

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they have a camera component called Meniscus controller, that's where to look

still orbit
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i havent looked at how they do it, but for what its worth, its probably sub optimal

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not their fault

frigid zinc
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i'm sure, I'm guessing they render the scene twice, and use pieces of both

still orbit
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its somewhat impossible in builtin renderer

frigid zinc
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but I haven't looked at it yet either

still orbit
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yea, im also guessing they render the entire scene twice and composite

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when you should really write this functionality right into the renderer

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a damn good use case for SRP...

frigid zinc
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i will look to see what they do, since i'm thinking about it

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(and eager to procrastinate 😛 )

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yeah i see

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Pass
{
// The ocean surface will render after the skirt, and overwrite the pixels
ZWrite Off

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so they draw the underwater first

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then the rest of the scene on top

still orbit
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overwrite the pixels

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sadface

frigid zinc
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// Goal of this vert shader is to place a sheet of triangles in front of the camera. The geometry has
// two rows of verts, the top row and the bottom row (top and bottom are view relative). The bottom row
// is pushed down below the bottom of the screen. Every vert in the top row can take any vertical position
// on the near plane in order to find the meniscus of the water. Due to render states, the ocean surface
// will stomp over the results of this shader. The ocean surface has necessary code to render from underneath
// and correctly fog etc.

            // Potential optimisations (note that this shader runs over a few dozen vertices, not over screen pixels!):
            // - when looking down through the water surface, the code currently pushes the top verts of the skirt
            //   up to cover the whole screen, but it only needs to get pushed up to the horizon level to meet the water surface
still orbit
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hmm yea makes sense

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pretty clever considering the constraints

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but definitely suboptimal

frigid zinc
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well floating between up and down probably isn't where someone would spend most of their time

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hopefully it's better once you're fully up or fully down

quaint grotto
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@frigid zinc you mean they have two camera for underwater?

frigid zinc
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no

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they have that controller on the camera and it pulls up a curtain like they describe there in the comments

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pulls it up to the boundary, draws the underwater, then finishes drawing the rest of the scene overtop

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i was wrong the curtain controller handles that

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and the meniscus controller actually handles drawing the thin line between

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it's a pretty light shader just gives it that 'water on glass' look at the border

quaint grotto
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im trying to visually understand those comments

frigid zinc
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yeah well best to just look at the code and shaders

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my lovely diagram ;p

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a meniscus is a curve formed due to water's surface tension

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the little lip of the curve causes a distortion at that point

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so they are replicating that so it looks more realistic

quaint grotto
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ok i understand that part

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so they apply the post process on to that mesh only ?

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or are they doing something different

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oh wait, is it basically like a vertical sheet or water?

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then using depth textures and the like - similar to the actual surface of the water

fervent tinsel
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those stalls after each change in SG has been pretty annoying

broken field
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Cyan dreams

foggy falcon
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and marctem spaketh, and low, the pink was replaced by cyan, and the shaders did compileth asynchronously.

And there was much rejoicing

still orbit
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Sorry to disappoint you but they don't turn cyan :P

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Each node has its own preview shader so they're super small. The update is so fast that a flash of cyan was annoying. I think we just don't update the preview until the compile is done.

frigid zinc
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sounds like a plan

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so i'm messing with a shader that uses vertex offset, but I find as I move these faces out, they break apart at the seams

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is there something that can be done about that?

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I mean, I want it to break apart between the hexagons

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but the faces that make up the hexagon split apart

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and I don't want that

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would leaving each face an Ngon prevent that? I wasn't sure if unity could handle 6 sided faces

still orbit
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Nope, all triangles

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But it should work as its normals based

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so your normals are slightly off?

frigid zinc
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maybe i'm not sure

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i'm using UV position

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maybe UV precision isn't that great

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vertex to vertex

still orbit
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yea maybe its an FP error in the UV?

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or your UVs arent welded

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something is wrong lol

frigid zinc
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or both heh

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i'll check the UVs first

still orbit
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out of interest why UVs for this? unless youre not pushing them outwards in the end

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looks like you are right now 😛

frigid zinc
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you can change the effect vertically

still orbit
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yea but you could do that with normals and object position

frigid zinc
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world normals then?

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I guess i'm not sure how that would work

fervent tinsel
frigid zinc
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yeah i'm on std pipeline so using Amplify 😛

still orbit
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if youre on amplify dont add it to object position at the end (SG is absolute vertex position input)

fervent tinsel
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you'd also think amplify would have example for this

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they got tons of samples shipped with it

frigid zinc
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they may but it's a lot to look through

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they only have like 100 examples

still orbit
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lazy, learn to do it yourself 😛

frigid zinc
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well I am :p

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I was just curious about this split face thing, it does seems to be UV precision

still orbit
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wouldnt be suprised

frigid zinc
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i made a new sphere but didn't run relax on the UV

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and it works fine

still orbit
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theres you go

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weld those UVs

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always weld your UVs

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for performance also 😉

frigid zinc
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well I learned something new. I figured if they looks welded they are :p

still orbit
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oh god no 😛

frigid zinc
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but apparently not

still orbit
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and you pay for those extra UV vertices

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granted its just vertex attributes, but every little helps

frigid zinc
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doesn't ever vertice have it's own set of UV coordinates anyway?

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or are you saying if two vertices share the exact coordinates, they share those coordinates?

still orbit
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in the runtime mesh data yes

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but not necessarily in the asset

frigid zinc
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i really had no idea, it's neve been factor that impacted anything I did

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at least that I knew of 😛

still orbit
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haha yea probably wouldnt have been

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but this is a good example of why 3d art fundamentals exist 😛

frigid zinc
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yeah, i'm 100% self-taught when it comes to 3d modeling

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so i'm sure i'm missing a few fundamentals

stone sandal
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always good to spend the time on proper UV wrapping and welding and packing, if nothing else than to learn what’s good and what isn’t

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then you can judge the quality of auto scripts that try to do it for you :p

frigid zinc
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yeah i mean I'm strong with a lot of things, unwrapping included.

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but this weld factoid escaped my notice hah

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can't say I've ever seen it mentioned anywhere

still orbit
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so many things like that, almost never mentioned

frigid zinc
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maybe it's so fundamental people think it goes unsaid lol

still orbit
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it often comes up when talking about baking normals

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as you want split edges when baking hard edge normals

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but you want as few shells as possible really for mesh optimisation

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so its a trade off ya know

frigid zinc
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yeah I mean i do often weld vertices when i'm playing with them by hand

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but i just saw it as an expedient way to line them up

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i figured if i didnt' touch them they were fine

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but i'm guessing the 'relax' function must have undwelded them

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it's something i don't use much but i wanted to get this hex UV map to fit nicely in the texture rectangle

still orbit
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understood, im facing similar tasks

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but im procedurally generating mine so its a bit simpler in this case

frigid zinc
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this is the naughty relaxed one

still orbit
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JESUS

frigid zinc
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this is the raw unwrap

still orbit
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imo you should still switch to normals

frigid zinc
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i was using relax to get the cells the same size

still orbit
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this is just a waste of texcoords 😛

frigid zinc
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well it still needs to be uv mapped for other reasons

still orbit
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yea ok, if youre going to texture it with these UVs anyway

frigid zinc
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yep

still orbit
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but then maybe you should triplanar it anyway

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result will probably be better

frigid zinc
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well it will have a gradient running up it as it does it's thing

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so triplanar won't really do the trick

still orbit
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ok but if its just a gradient then why not just sample that with the object position as well?

frigid zinc
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that's a good point, probably could

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i will try some stuff and see, now that I've fixed the faces splitting

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but i guess i'll have to try implementing a non-UV way of doing it first hah

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Vector1, really? 😛

frigid zinc
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so your example works but

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splitting still happens on the bad mesh with your setup

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so i guess it wasn't the nodes after all, just something about the mesh

still orbit
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:/

frigid zinc
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there is one other difference between the meshes, i exported the bad one pre-triangulated, and the good one i left as Ngons, and let Unity handle it

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so that may be a factor too

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Unity still triangulated it, so i dunno, head scratcher

still orbit
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yep, somethings up with that mesh...

frigid zinc
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i appreciate the assist though, I learned quite a few important things 😃

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this is how I do the remap and fade though to get that mushroom look

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yours wasn't much different than mine, only i was using UV instead of Vertex Position 😉

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you can plug it's output directly into the saturate

still orbit
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yep makes sense

still carbon
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the normals on that mesh are flat so the verts are gonna be split

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you'd either have to switch to averaged normals on your model and calculate flat shading in your shader, or bake softened vertex normal directionality into vertex color or a uv channel

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though since it's a sphere... maybe you could get away with just calculating angle of vert from mesh center and offsetting based on that direction..

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oh I didn't read back far enough.. your issue was just the minor splitting within the hexagons.... That could still be because the edges inside those hexagons aren't all soft-edged. I'm guessing you ran a harden edge/normals across the whole mesh instead of just the edge perimeter of the hexagons?

steel notch
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ok boyos

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I return to the world of Shaders for another round o' mind fuck

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I'm basically looking to make a shader where intersections end up taking on a fresnel effect

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like ths

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I have a graph currently made by I believe 0lento a bit back

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which currently looks like this

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but I'm having trouble with changing the color

still carbon
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changing the color of just the intersection glow or the fresnel color too?

steel notch
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Well I'd like them both to be the same

still carbon
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ok well then all you'd need to do is change the color value on the master node in that graph to do that

steel notch
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the intersection glow should really just look like an extension of the regular fresnel glow

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the albedo or admission?

still carbon
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albedo

steel notch
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because I've tried to change both and no dice

still carbon
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all your graph is doing is changing the transparency, and what happens to areas that aren't transparent? they show they albedo/emission, or if highly glossy a reflection (which wouldn't be the case here)

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make sure you're changing it on the actual material and not in the master graph, master graph is just the default color it would start with

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make a color property on the left and plug it into your albedo

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and make one for emission too

steel notch
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alright i'll give it a go >_>

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oh uh actually just one more thing in the meantime

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how would you go about making arrows like these?

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from MTG Arena

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something something line renderer?

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does it matter if I set the color as HDR?

still carbon
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the improved line renderer might get you something close to the blue one, but vfx graph might be better equipped
and set what to hdr?

steel notch
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the color property

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ya its the blue one I'm going for

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(for the arrows)

still carbon
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though could probably make a shader that simply draws the line on a plane, calculating line width in screen space instead of UV space

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and can just scale the plane with its pivot on an edge

steel notch
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so I've got this strange behavior at the moment

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where albedo changes the main color

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but emission seems to only change the back intersection?

still carbon
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and if you make the albedo black?

steel notch
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ooo

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but why 🤔

still carbon
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dunno, what pipeline are you using? maybe K3D will know

steel notch
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lightweight

still carbon
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also if all you're using this shader for is that effect i'd suggest changing your PBR master node to an Unlit one, as there's no reason for it to be dealing with PBR lighting, it's just using emission

steel notch
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can I do that within the same graph or do I need to make a new one and copy/paste it all over?

still carbon
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can do it within, i believe it's under the master section

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of the node menu

steel notch
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kk changed it

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ty

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hmmm looking alright I think

still carbon
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yeah only issue is that it doesn't seem to be overlaying your sprites, unless that's how you want it

steel notch
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hmm?

still carbon
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notice the red color isn't on top of the characters? they appear on top of your bubble at all times

steel notch
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oooh

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you think it's that shader you made for me >_>

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because they all have it

still carbon
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uhh probably, dunno if you can increase the render queue on your bubble shader to get around that in lwrp, i havn't messed with lwrp too much

steel notch
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honestly it's fine

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not toooo concerned with visual atm

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tooooooooo concerned >_>

still carbon
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@steel notch it's not an issue with the shader I made you pretty sure, it seems to just be due to the transparency sorting with the sprite renderer you use for the characters. If you lower the order in layer of the characters you'll see the sphere overlap them

steel notch
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couldn't I just change the order of the sphere too 🤔

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oh... wait

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meeeeesh

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can I do something to the spheres though?

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the characters are ordered specifically relative to other things already

still carbon
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if you click on the material for the glow shader you can change the render queue on that

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increase it

steel notch
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its already at 3000

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how big are we talking?

still carbon
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just like 10 or 20 more should be fine. 3000 is where transparency queue starts.

steel notch
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I increased it by 1000 and they still appear in front unfortunately

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its k though, its a low priority atm

still carbon
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it worked fine for me :S did you make sure to click away from the render queue input box to initiate an update of the values?

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also to truly sell the effect you'd want two different materials of it on the glow sphere, first one would only render back-faces at normal transparent queue, and then second material would render just front at a slightly increased queue, so the sprite would actually overlap the rear of the bubble but not the front

steel notch
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bruh do you work professionally in gamedev? What are you? I feel like I've asked this before but I forget.

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I know you modelled before (that Lizard)

still carbon
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I do freelance work yeah modeling/programming/shaders

steel notch
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well let me just say that I appreciate how helpful you are

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seriously

still carbon
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it's no problem, helping others helps keep yourself sharp on topics and often learn little things here and there 😃

dry island
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How much do I need to pay for a realistic hair shader that works in LWRP? 😄

fervent tinsel
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can't you port the HDRP's hair shader for it?

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altho I do admit I haven't checked how complex it is

echo badger
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It doesn't seem like it is possible right now to make a a toon shader with HDRP and SG without making custom nodes. Does this sound correct? Am I missing something?

dry island
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LWRP shaders are not toon shaders.
They just do not use compute shaders like HDRP does.

Sadly HDRP shaders do not convert to LWRP. (Or the other way around)

One would think they should, but the choice was made for whatever reason to create a split between the two.

Custom nodes are very much necessary. I am using some nice skin nodes for LWRP.
https://assetstore.unity.com/packages/vfx/shaders/nodes-for-shader-graph-124611

However not many bother to make any since they are still in Preview.

Nodes for Shader Graph - Asset Store

14 Nodes:

  • SSS Color,
  • SSS gradient,
  • Parallax mapping,
  • Parallax Mapping iterrations,
  • Parallax Occlusion Mapping,
  • PerturbedNormals (World normal with NormalMap),
  • FixedViewDirectionTangent,
  • CreateNormalChannel (for individual texture channels),
  • Crea...
steel notch
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hmm this has a significantly less appealing look when placed on a box

still carbon
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yeah cause there's no curvature haha, i'd create a different shader that swaps out the view angle glow with a height based one

steel notch
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errrr

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and that would be which node?

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going to gueeeeess scene depth?

still carbon
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just Position node, in object space mode

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take the Y component from it, add +1 and divide by 2, then put it through a One Minus node and use it to adjust transparency by plugging it into the A slot of that final Maximum node

steel notch
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oh and the fresnel isn't needed?

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because no curvature?

still carbon
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yeah

steel notch
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ultra dumb question, how do I take the y from the position?

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split node?

frigid zinc
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yep

steel notch
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kk

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errrr

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it lost the intersections too

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honestly instead of this transparent color I'd just like the edges to have the same look as when it was a circle

still carbon
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well you'd probably want a power node after the one minus so you can increase the vertical gradient falloff, and you might want to instead of using Maximum use Multiply or Add

steel notch
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it kinda disappeared

still carbon
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yeah use add not multi, cause with the depth fade it's going to end up overriding the other one with its 0 trans

steel notch
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k this is with add

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wait wtf

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that's gnarly

still carbon
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ahh yeah the effect isn't going to work well if the cube is penetrating ground that much

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if you had a script on the object feeding the world space Y value of the surface under the cube into a float parameter on the material it would make the effect fairly trivial though, nice consistent, non-screenspace-derived value to compare to

steel notch
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alright you know what

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imma go learn wtf a shader is

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and how they work

umbral cargo
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hey, I am trying to draw a billboard, orthographic sprite into a world that uses a perspective camera

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is there a way for me to alter my shader so that the sprite gets drawn correctly as I pan the camera around without changing my camera to orthographic?

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Here is what my billboard sprite currently looks like with a perspective camera

frigid zinc
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well that's what a billboard does. It keeps the same rotation no matter camera angle

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i.e. always facing toward caemra

#

if you want it to stay still when you rotate the camera, you shouldn't use a billboard

umbral cargo
#

right, but i'm not rotating the camera here, just panning

frigid zinc
#

oh hmm

#

i know what you mean

umbral cargo
#

it's the fact that the camera is perspective, it's a distortion

frigid zinc
#

i had this with a few attempts at billboards

umbral cargo
#

if i switch to orthographic, the billboard lines up no matter how I pan

#

but I don't want to use an orthographic camera if I can avoid it

frigid zinc
#

are these 2d sprites?

umbral cargo
#

yes, they are 2D isometricly drawn sprites

#

the terrain is a 3D mesh

frigid zinc
#

are you using shadergraph to do your shader or something else?

umbral cargo
#

i just wrote the shader myself

frigid zinc
#

good because all the billboard shaders i have are written by hand LOL

#

let me pull up my project and look at them, i forget which works right

umbral cargo
#

in this case I probably followed an example, I'm not a from scratch shader wizard

#

i am sure this is the relevant part, but am not an expert in knowing what all of the shader macros do or are for

frigid zinc
umbral cargo
frigid zinc
#

this is basically the problem, as i rotate to the left, it's like that

#

but as I rotate to the right:

#

you want it to stay the same relative to the 'terrain' at the bottom

umbral cargo
#

i expect it to always face the camera when rotating

#

my camera does not rotate

frigid zinc
#

i'm lost then

umbral cargo
#

it's at a fixed rotation

frigid zinc
#

straight panning shouldn't alter anything

umbral cargo
#

when I pan the camera to the left and right, and the sprite appraoches the edges of my screen, the perspective camera draws the terrain differently due to the distortion of the perspective camera

frigid zinc
#

yes perspective.

umbral cargo
#

yeah, I was to add perspective distortion to my billboard, basically

frigid zinc
#

i don't think you can have both

#

either it's going to be drawn in perspective, or as a billboard

umbral cargo
#

i wonder how the many JRPGs that exist do their games with 2D sprites on 3D backgrounds

frigid zinc
#

you can try my billboard shader and see if it's any different

#

but i don't think it will be

umbral cargo
#

sure, I'd like to see your code at least

frigid zinc
#

it's a standard surface shader but as a billboard

#

just diffuse, no normal or metallic map

#

but it does have sliders for smooth/metallic

umbral cargo
#

looks like we must have started with the same example shader

frigid zinc
#

dunno about that, i made this by trial and error lol

#

still has some of my attempts commented out

umbral cargo
#

your commented out attempts are the same code as my shader

#

i don't remember where or when I started with my shader, though. it's been awhile

frigid zinc
#

well it's not like there's a lot of ways to do it heh

#

the one i found by searching used a script on the camera

umbral cargo
#

same indentation too, I mean

frigid zinc
#

and that really wasn't acceptable to me

umbral cargo
#

and properties _ScaleX and _ScaleY

#

maybe I found an old shader you shared somewhere 😛

frigid zinc
#

yes those are common in a lot of examples

#

i taught myself via the internet, so i'm sure i saw a ton of examples like that hah

#

anyway, yes i don't think you're going to get what you want, because the two concepts are diametrically opposed.

#

billboard is meant to ignore perspective

#

someone here is asking the same question you are.

#

it's unclear if any information there is helpful but worth reading

umbral cargo
#

i just found this too

#

it's possible I want viewpoint billboarding instead of viewplane

frigid zinc
#

that post is interesting. it sounds like what you want is the World Oriented Billboard

#

which is a new one on me really

umbral cargo
#

yeah, they also just call them imposters

frigid zinc
#

they don't explain how it's done though

#

but at least we know a name now

#

i'm guessing instead of orienting it to the view plane

#

it would be oriented to the camera position

umbral cargo
#

may have found something here

#

he's doing stuff with corners though that I probably don't need

#

yeah, he's doing scaling with UV2 and applying it in the shaders

#

unfortunately doesn't seem to be what I am looking for either. hm

still carbon
#

could you post a video clip of something you know performs the way you're trying to replicate?

frigid zinc
#

that shader doesn't quite seem to work

#

almost

#

it assumes the camera isn't rotated

#

as soon as you rotate the camera it breaks

umbral cargo
#

sure, one sec

#

yeah, I was going to look for the camera's relative Y-axis instead of the world y-axis

frigid zinc
#

but if your camera has no Y rotation you could try it

umbral cargo
#

then it might work

#

but I'll make that gif first

frigid zinc
#

even then it seems broken to me

umbral cargo
#

this is where it uses the world-space Y axis

#

float3 A = cross(UNITY_MATRIX_V[1], N);

#

at least I think it is

#

here is the behavior I want

still carbon
#

this isn't a 3D game

#

it's just isometric

umbral cargo
#

it's an orthographic camera

#

the terrain is 3D

frigid zinc
#

it's a 2D billboard in a 3d scene

still carbon
#

it's still essentially an isometric view though

frigid zinc
#

and he wants the billboard to angle with perspective at the edges of the screen

umbral cargo
#

yes, it is

frigid zinc
#

just as the terrain does

umbral cargo
#

I want the camera to be a perspective camera, at an orthographic angle

still carbon
#

the surface doesn't appear to be wwarping to perspective either though?

#

it all appears to be flat

umbral cargo
#

it's not because it's an orthographic camera

frigid zinc
#

i wasn't sure it could be done, but there's a type of billboard call a world-oriented billboard that might do the trick

umbral cargo
#

you asked for how I wanted the sprite to look

frigid zinc
#

however finding an example is proven hard

still carbon
#

so you want the effect of the pillars, but with a perspective ground..

umbral cargo
#

i can record a perspective camera too

frigid zinc
#

about halfway down the page they discuss it

#

it's basically a billboard that faces camera location, not the screen plane

#

'viewpoint oriented' as they put it

umbral cargo
#

at least we think that might be the answer

#

Here's an example of it looks like with a viewplane billboard and a perspective camera

#

which is what I am trying to avoid

frigid zinc
#

i actually just remembered

#

the script based version i have does exactly what you want

#

it was why i didn't like it heh

umbral cargo
#

is it the camera.Lookat?

#

or whatever it is

frigid zinc
#

pretty much yes

umbral cargo
#

haven't looked at that in a long time, can't recall how it looks

frigid zinc
#

with "AlignNotLook" on it behaves like the shaders

#

but with it off, it rotates to face the camera

#

which sounds like what you're after

umbral cargo
#

nah, this thing is too extreme

frigid zinc
#

well that's going to be the problem, no solution is going to perfectly match the perspective of the 3d elements

#

the real solution is to pick a style

#

either go full 2.5 Orthbgraphic

#

or full 3d perspective

#

i.e. either make the terrain a perspective drawn texture

#

or make the wall a 3d cube with pixel art on it

#

trying to mix the two is only going to leave you unhappy i feel

umbral cargo
#

i feel like certain JRPGs have had 3D maps with 2D, isometric characters sprites on them for ages

#

with using a perspective camera

still carbon
#

if you don't mind being restricted to shader model 4 and up, you could perhaps rotate towards camera view and use noperspective interpolator semantic on the vertex value of your v2f struct in the shader

umbral cargo
#

i have been trying to keep it in shader model 3.5 for webGL

#

i think 3.5 is the webgl limit

#

but I'm not entirely married to it

#

what is the noperspective interpolator?

#

oh, i would do this on my map?

still carbon
#

on the billboarding sprites

#

unless you don't want perspective distortion happening to your map either

umbral cargo
#

perspective distortion is not happening on the billboard sprites though, right?

#

that's the problem

#

it needs to happen

#

it's happening on the map, but not the sprites

still carbon
#

I coulda sworn this conversation started off with you asking to not have that happen on those pillar sprites, alright

umbral cargo
#

this is the image I posted starting off

#

this is with my perspective camera on

frigid zinc
#

i understood it as he wants the perspective shift to match

umbral cargo
#

I asked if there was a way to draw the sprite "correctly", which was vague. But by correctly, I meant with perspective distortion.

frigid zinc
#

but not having it would probably be an equal solution

umbral cargo
#

well if I did not have it on the map...I don't know how that would look, heh. Can't visualize that.

frigid zinc
#

like orthographic lol

umbral cargo
#

feels like everything would be orthographic, yeah

frigid zinc
#

the shader would have to not only factor in the camera position, but the object's position too

#

i just can't get past the part that's basically drawing it with perspective, but you want a billboard

umbral cargo
#

here's an example of a game that uses 2D sprites on a 3D map with a perspective camera

still carbon
#

those sprites aren't being perspective distorted though, and the camera has no actual perspective I don't think

frigid zinc
#

well sure you can do that, but they aren't trying to match any perspective rotation

#

they are just changing the sprites based on view angle

#

so you see side, front, back etc

umbral cargo
#

of course, I know they are switching sprites depending on which way they are facing

#

what i'm saying is, their 2D sprites don't look like they are floating around when they get near the edges of the screen

#

but yes, whether or not they are using a perspective camera I can't prove, I can only postulate that it looks like the 3D map has parallax based on shots like this moment

frigid zinc
#

it's 2.5 D view. i think basically the camera is orthographic

#

let me see if i can replicate that

umbral cargo
#

one minute while I make a gif of the camera shot I am talking about

#

that does not appear orthographic to me

frigid zinc
#

it does to me

#

it's just rotating around the scene

#

orthographic doesn't mean it has no perspsective

#

it just means it has flat perspective

#

or maybe i use the wrong term

#

not orthographic

#

isometric

umbral cargo
#

i'm not sure of the difference myself. Unity uses the term isometric in the scene view, and orthographic in the camera inspector.

frigid zinc
#

you can see this by clicking iso in the scene view

#

making a gif

umbral cargo
#

but you're right, their camera could very well be ortho/iso

frigid zinc
#

chug chug, (big gif)

#

ok first half is perspective

#

then i flip it to isometric

#

isometric basically has no perspective

#

but it's still 3d

umbral cargo
#

I guess I'll just have to e-mail square enix engineers

#

from 1997

frigid zinc
#

hehe

#

well the video you provided looks a lot like isometric to me

#

there's some info here on how to make the game camera isometric

#

you can give it a try and see what you think

#

(brownie points if anyone knows what the pink island above is from 😛 )

umbral cargo
#

unity's old island demo?

frigid zinc
#

yes lol

#

came from like, unity 3

#

i figure most people haven't seen it

#

i made that iso camera like on the page, works pretty sweet

umbral cargo
#

i already did have a camera set up at an isometric angle

#

but I still haven't tried their method

frigid zinc
#

well i hope it gives you what you're looking for

#

i have a good feeling about it

umbral cargo
#

thanks for talking things through with me

slate patrol
#

I wonder why in the world PPSV2 has initial and final passes?

#

Can't it operate on the main camera RT?

#

And on that note, final pass is not rendered if only the Uber shader is used

#

What's the deal with that?

#

It seems like an obvious performance waste regarding fillrate

slate patrol
#

Well, I get it, final pass has stuff like dithering and such, that's why dithering is injected into the uber shader in case if there are no effects afterwards.

Why is the initial pass required though?

left stream
#

guys

#

what is that error

frigid zinc
#

looks like you're trying to use a LWRP master node in HDRP, or a HDRP master node in LWRP

stone sandal
#

or you don’t have a render pipeline assigned at all

quaint grotto
#

or shadergraph is incomplete and has bugs

fervent tinsel
#

that would be most unlikely alternative here

#

(for that error I mean, but it does have bugs)

frigid zinc
#

or the earth left it's axis and we all gonna die (now that's the most unlikely scenario 😛 )

broken field
#

The Earth screamed, a sound all heard because it was the sound of a world being torn by gimble lock, a terrible and final end for mankind in it's pathetic little simulation.

frigid zinc
#

fatefully just moments before, the earth had escaped total annihilation when a large comet went right through it due to not having continuous collision detection on.

noble pagoda
#

please don't summon the Kraken

grave flare
#

this isn't totally shaders, but is there any way in c# to efficiently copy a smaller texture into a larger texture

quaint grotto
#

summons kraken

frigid zinc
#

i'm sure there is, i see enough texture atlas creators and sprite sheet packers around

#

like that one

rotund tusk
#

Graphics.CopyTexture if supported

quaint grotto
#

i had such a headache with texture atlas

#

used to have the edges of different textures bleeding across

#

annoyed the shyte out of me

grave flare
#

the issue is that i want to copy a 64x64 into a 515x512 and the program is hanging

#

which is weird, because looking at this repo this is basically what im doing

quaint grotto
#

well just think of it like a grid of textures

grave flare
#

repo:

           for (int x = 0; x < texture.width; x++)
            {
                for (int y = 0; y < texture.height; y++)
                {
                    Color pixel = texture.GetPixel(x, y);
                    int posX = Mathf.FloorToInt(x / ratioWidth);
                    int posY = Mathf.FloorToInt(y / ratioHeight);
                    texture2D.SetPixel(posX, posY, new Color(pixel.r, pixel.g, pixel.b, pixel.a));
                }
            }
            texture2D.Apply();
#

me:

for (int i = 0; i < Terrains.Length; i++)
            {
                Clog.L($"handing texture {i}");
                var t = Terrains[i];
                var tilemapdim = t.tilemap.texture.width;
                //blit the textures from the tilemap onto the max size texture
                var newTex = new Texture2D(512,512,TextureFormat.ARGB32,false);
                var newCol = new Color[512*512];
                var tilemapCol = t.tilemap.texture.GetPixels();
                Clog.L($"color length {tilemapCol.Length}");
                //populate with offset colors
                for (int tc = 0; tc < tilemapCol.Length; i++)
                {
                    //0,0 top left
                    var colorX = tc % tilemapdim;
                    var colorY = tc / tilemapdim;
                    newCol[(colorY * 512) + colorX] = tilemapCol[tc];
                }
                // Graphics.CopyTexture(Terrains[i].tilemap.texture,newTex);
                Clog.L($"setting pixels for texture {i}");
                newTex.SetPixels(newCol);
                newTex.Apply();    
                // Texture2D terrainTexture = Terrains[i].tilemap.texture;
                textureArray.SetPixels(newTex.GetPixels(), i);
            }
quaint grotto
#

are these textures procedurally generated before hand?

#

if not why not just make the atlas in photoshop

grave flare
#

they are procedurally generated at runtime

#

and baked into a texture array

quaint grotto
#

ok well its simply applying colour data based on a grid. are your textures all 64by64?

grave flare
#

no - the issue is that the incoming textures can be 64x ,128x,256x,512x

quaint grotto
#

oh

grave flare
#

so im trying to build a 512x512 texture array

quaint grotto
#

i mean most texture atlas' are usually uniform

grave flare
#

and then "resize" the incoming textures to be 512x512 as well to conform to the array

quaint grotto
#

its more tricky when they are not uniform as you'll need to remember what you already added

grave flare
frigid zinc
#

this is the core of their texture reading/writing

#

so yeah they use readpixel setpixel

grave flare
#

yeah thats where i pasted the above from

frigid zinc
#

oh ok

#

i was buried in the code reading lol

grave flare
#

well shit this seemed to at least maybe work??

frigid zinc
#

another one

grave flare
# 
        var newt = new Texture2D(tilemapdim,tilemapdim,TextureFormat.ARGB32,false);
                newt.SetPixels(t.tilemap.texture.GetPixels());
                newt.Resize(512,512);
                newt.Apply();
#

basically blit to a new texture of the same dimms, resize, then apply

#

it also skips needing to forloop over 512x512 indices X number of times

frigid zinc
#

seems mostly the same, setpixel32/readpixel32

#

just using the 32 bit variant

grave flare
#

yeah seems to be the way

#

its not rendering "right" yet, but the program isn't hanging anymore and im not getting array size errors anymore

#

oh wait

#

After resizing, texture pixels will be undefined. damn

frigid zinc
#

hmm

#

so you have to resize first

#

and if you want to upscale a small texture i guess you have to do it yourself during the copy process.

#

like if source is 64x64 and destination is 512x512, you'd need to write every source pixel 8x8 times

#

looks like someone found this limitation and made a solution

#

thank god it has a C# version down the page

#

someone else made a GPU based version that's faster (and quite a bit simpler)

grave flare
#

oh i see what i was doing, my shit was hanging because i was incrementing the outer for loop, not the color one -_-

#

the issue is that i don't actually want to "scale"

#

i basically want to increase the texture "canvas" size but keep the pixels in the same place

frigid zinc
#

yeah then might be best to just make a new texture and copy the original into it

steel notch
#

is there a way to "shave off" certain sections of a mesh with shadergraph?

#

like if I have a sphere and want to turn it into a hemisphere

frigid zinc
#

this is a pretty cool package showing how to use a plane as a 'cross section' viewer for 3d models

#

obviously it doesn't use shadergraph, but the same technique could be created in shadergraph

grave flare
#

@frigid zinc as a follow up, i just ended up making multiple terrainarrays on my shader lol

frigid zinc
#

ah I see.

grave flare
#

its prob more efficient anyways - in the resize system you needed to have a single 64x64 sprite you had to store a 512x512 tex in memory

frigid zinc
#

well glad you found a solution 😃

grave flare
#

👍

#

rip

UNITY_DECLARE_TEX2DARRAY(_OnesSpriteArray);
            UNITY_DECLARE_TEX2DARRAY(_TwosSpriteArray);
            UNITY_DECLARE_TEX2DARRAY(_FoursSpriteArray);
            UNITY_DECLARE_TEX2DARRAY(_EightsSpriteArray);
            
            fixed4 frag (v2f i) : SV_Target
            {
                // float FOG = i.color.r;
                float FOG = i.fog.r;
                fixed4 col = fixed4(0,0,0,0);
                if(i.color.r == 0.2) //64 - ones
                {
                    col = UNITY_SAMPLE_TEX2DARRAY(_OnesSpriteArray, i.uv) * FOG;
                }
                if(i.color.r == 0.4) //128 - twos
                {
                    col = UNITY_SAMPLE_TEX2DARRAY(_TwosSpriteArray, i.uv) * FOG;
                }
                if(i.color.r == 0.6) //256 - fours
                {
                    col = UNITY_SAMPLE_TEX2DARRAY(_FoursSpriteArray, i.uv) * FOG;
                } 
                if(i.color.r == 0.8) //512 - eights
                {
                    col = UNITY_SAMPLE_TEX2DARRAY(_EightsSpriteArray, i.uv) * FOG;
                }
                clip(col.a - _Cutoff);
                return col;
                // return i.color;
            }
umbral cargo
#

@frigid zinc can you post your Shader "Custom/BillboardSurface" again? The pastebin expired, and I wanted to borrow something from it to see if it works with Sprites.

#

for some reason my shader doesn't work with 2 sprites from the same spritesheet, and it seems to possibly be the way I calculate the vertex position

#

as soon as I make a 2nd sprite from the same sprite sheet that uses the same material, they both disappear

#

unless I zoom in really close. it's bizarre.

#

actually nevermind, I had your shader open in an old tab

#

tab hoarding for the win

#

hm, I couldn't get your shader to actually do billboarding

#

oh, it's probably because I am in LWRP

fervent tinsel
#

not sure if there's any node for getting the side but you could probably figure that out with some logic

frigid zinc
grizzled prairie
fervent tinsel
#

The fresnel doesnt work double sided for that effect. It was the reason why I omitted fresnel from the backside on that SG example

frigid zinc
#

yeah I've made something similar awhile back, it's very doable in ASE

grizzled prairie
fervent tinsel
#

@grizzled prairie that looks like you have the wrong face for the fresnel still

#

unless you are going for effect like that 😃

grizzled prairie
#

yeah, it's a little bit backwards right now 😬

jovial willow
#

Hello everyone! Quick question, I have a custom shader, and I'm trying to update one of its parameters (a color) when the GameObject is disabled, without success.

#

Does the game object need to be enabled for the change to work? Can't find this anywhere

still carbon
#

How are you checking if the color changed if it's disabled (and thus not rendered)?
How are you setting the color as well? It shouldn't matter if the GameObject is disabled, since what you're setting is a material/shader property which is a separate object from the GO.

jovial willow
#

I'm doing this:

#

m_image.material.SetColor(m_colorPropertyId, newColor);

#

And I know it doesn't work because when the GO is active again, the color hasn't changed to the newColor value

#

Something worth noting is that only that GO has that material, so when its disabled none other GO is using it

fervent tinsel
#

just swap the color property to vertex color on yours

#

you can of course add more things to the max before opacity if you want some surface effect to that

grizzled prairie
#

Okay, cool 😃

tame topaz
#

Hi guys, we're having some weird artifacting using ASE. In this test image (zoomed in), you can see black specs on the model when giving it an absolute barebone fresnel effect.

📎 image.png
#

It's just a color into Albedo and Fresnel Node straight into Emission.

fervent tinsel
#

you used to get those a lot on the old Unity 4 shaders with high specular values

#

no idea what is causing that on your image tho

tame topaz
#

Ugh. Yeah, it's pretty noticeable, and the client definitely will too.

fervent tinsel
#

can you put like min node on the emissive, just to make sure there's no negative values being fed to it?

tame topaz
#

Sure, be back in a moment with results.

fervent tinsel
#

or clamp but min with other input set to zero would do

tame topaz
#

Nah, same issue. We did saturate the original shader too.

fervent tinsel
#

maybe some issue on PP then

steel notch
#

so Ive got two sphere meshes here

#

the one on the left has a much higher polygon count (if thats what its called)

#

than the one on the right (the basic unity one)

#

when I apply the same material to it though

#

it doesnt look the same (the one on the right is correct)

#

what do I need to do

frigid zinc
#

need a bit more information. how are each of the spheres UV Mapped? what is the material exactly? can you show the Material inspector?

steel notch
#

heres the whole graph

#

but you're probably interested in this region

frigid zinc
#

so it does have a bumpy normal map

#

either there's a huge difference in the UV mapping of the two spheres, or there's a tiling difference (or both)

#

but you should be able to make a copy of the material for the small sphere, and turn up the tiling

#

if it's 1 x 1 try 5 x 5 or 10 x 10

steel notch
#

I think the sphere I have is like 100 by 100 in blender

#

for vertical/horizontal

#

is that too much

frigid zinc
#

yes but it's the UV map i'm interested in

#

did you even UV map it?

steel notch
#

....

#

proooobably not >_>

frigid zinc
#

ok well that would explain the difference also

steel notch
#

how do I do that

frigid zinc
#

is it an ICO sphere or UV sphere

#

which option did you use in blender

#

if you can't remember can you show me a wireframe view of the sphere?

#

I can tell by sight hehe

#

each type would be uv mapped a bit differently

#

and we should probably go to the 3d channel since this isn't about shaders anymore

steel notch
#

kk i'll head over to 3d

brave ore
quaint grotto
frigid zinc
#

fluffy conveyor belt

#

@brave ore as I understand all the HDRP shaders are available as shadergraphs, so it should just be a matter of cut and paste, I think?

#

i haven't actually looked for the graphs

brave ore
#

@frigid zinc the terrain shaders look very different from regular lit shaders.

frigid zinc
#

help me a bit, where do you find the shadergraph versions?

fervent tinsel
#

there's no terrain graphs for HDRP yet

frigid zinc
#

ahh

fervent tinsel
#

it does sound like that's coming eventually but it's not there today

frigid zinc
#

for future reference where do they keep the shadergraph versions, in the HDRP folder?

brave ore
#

I made the shadergraph shader my self. I need to convert it to hlsl code that the TerrainLit shader is using

frigid zinc
#

(in still installing hdrp)

fervent tinsel
frigid zinc
#

ah ok

fervent tinsel
#

there's basically three main things missing right now from shader graph templates

#
  1. terrain graph
  2. ability to do tessellation on shader graphs
  3. layered lit graph
frigid zinc
#

as I recall you can view the HLSL by right clicking on the master node

brave ore
#

I am not looking for making a terrain shader in shadergraph.

fervent tinsel
#

altho technically the third one can be done on lit master node

brave ore
#

I need to find a way to modify the TerrainLit shader so that it could have the a vertical world space gradient

fervent tinsel
#

porting that graph to shader code isn't hard part here

frigid zinc
#

yeah just so they know:

brave ore
#

I know, I can make it as a Surface shader in CG code. but Terrain shader looks structurally different from a regular surface shader.

frigid zinc
#

they usually are

#

terrain shaders that is

brave ore
#
  • the Show generated code is 3k lines
frigid zinc
#

but if you can't point me to the shader i can't help heheh

#

since it's not in shadergraph there must be a shader file you're looking at. where is it?

brave ore
#

while the desired behaviour can be written in less than 100 lines as a surface shader.

frigid zinc
#

right you have to extract the part you need out of the rest

#

i'll have to reconstruct your node setup so i can see what is generated, give me a few min

brave ore
frigid zinc
#

(ugh, does it really compile every time you connect a node 😦 )

brave ore
#

here is the output

still orbit
fervent tinsel
#

I actually tried that but I think I broke something on the merge as it was still as painfully slow to do new operations on the SG 😄

frigid zinc
#

@brave ore, the actual code from your graph is between the comments:
//-------------------------------------------------------------------------------------
// Graph generated code
//-------------------------------------------------------------------------------------
and
//-------------------------------------------------------------------------------------
// End graph generated code
//-------------------------------------------------------------------------------------

#

you can mostly ignore the rest

#

the problem is going to be, they have each pass in an include file

#

so there's nothing in TerrainLit.shader to really modify

fervent tinsel
frigid zinc
#

@brave ore it looks like the actual pass code is in #include "Packages/com.unity.render-pipelines.high-definition/Runtime/Material/TerrainLit/TerrainLitSharePass.hlsl"

fervent tinsel
#

it's nice to have these all exposed finally

frigid zinc
#

so yeah it gets complicated to do this kind of modification

brave ore
#

@frigid zinc so do i just pass my shader as an include?

frigid zinc
#

no...

brave ore
#

: (

frigid zinc
#

it's not anywhere near that simple

#

the code would be somewhere in the includes

#

but i'm not sure where

still orbit
#

Yea, its actually a side effect @fervent tinsel . All I wanted to do was expose all the slot value types in subgraphs

#

but it was easier to add the remaining property types to all blackboard and keep the code that converts property > port, than to refactor the blackboard to work differently in subgraphs

#

500 LoC rather than ~4000

fervent tinsel
#

I don't really see why one would even want to limit those out by design

brave ore
#

@frigid zinc TerrainLitSharePass.hlsl"?

frigid zinc
#

@brave ore it looks like it may be in TerrainLitSplatCommon.hlsl

fervent tinsel
#

but yeah, I don't really complain about the current setup once these are merged (as far as the properties go, I still got my nag list on SG's other issues :/)

frigid zinc
#

but this is heavy stuff. you'd need to be a real shader exert to modify this

fervent tinsel
#

I'd really want subgraphs inside subgraphs really badly 😄

still orbit
#

Well it gets sort of dicey as you cant expose them to the property block. But its less that we werent going to have them on the blackboard, and more that we eventually need the blackboard contents to be contextual to the graph type.

#

But backporting that work to 19.1 was deemed too risky

#

And yes, nested subgraphs are coming 😛

fervent tinsel
#

could do a lot more custom nodes with them

still orbit
#

Yup, life should be a lot better when we land these changes weve got coming...

fervent tinsel
#

this is also what UE4 does for like half of their material nodes, they are just their own material functions (which is their equivalent to sub graphs here)

brave ore
#

Oh well, thank you for the help @frigid zinc

frigid zinc
#

TerrainSplatBlend(float2 uv, float3 tangentWS, float3 bitangentWS,
out float3 outAlbedo, out float3 outNormalTS, out float outSmoothness, out float outMetallic, out float outAO)

#

this function has a lot of 'out' variables, including albedo

#

you might could alter the outAlbedo inside there, but it would be a real experiment to see if it works 😃

#

that's the function that blends all the splats together

#

the properties you want to have would have to be in the top level shader

#

so would take some coordinating of edits to both files

brave ore
#

;-; That is way beyond my programming abilities .

frigid zinc
#

i'd pretty much be like a monkey beating on a rock with a bone myself, hoping something worked 😛

#

i have a good idea something would happen, i just don't know what LOL

brave ore
#

I am more like a fish in this analogy.

frigid zinc
#

😃

brave ore
#

XD

fervent tinsel
rotund tusk
#

@brave ore you could modify TerrainSplatBlend function and set outAlbedo to whatever the result is from your gradient calcs. You could also open TerrainLitData.hlsl and in GetSurfaceAndBuiltinData function, modify "surfaceData.baseColor" after the call to TerrainSplatBlend

#

you'd also probably want to do the same changes for the generation of the basemap shader (rendered as the lowest LOD for the Terrain). that code is in TerrainLit_Basemap_Gen.shader. The first pass there is what you would want to modify, again after the call to TerrainSplatBlend. You'd set "albedo.xyz" to your color

#

if you modified the TerrainSplatBlend function, you'd only have to add the changes once

ornate blade
#

sorry for X post, but I thought this fit here (and no one answered in #archived-hdrp ). Does anyone know why the text has a weird delay? 2 Cameras. First is perspective, and renders everything but the UI layer (which text and panels are on). Second is orthographic and renders nothing but UI. HDRP, happens with multiple fonts

📎 2019-02-27_10-42-03.mp4
brave ore
#

@rotund tusk thank you for the advice, I will give it a try

honest dirge
#

anyone know why there is banding artifact in the Game render when in the scene i have no problem ?

frigid zinc
#

@ornate blade I saw your previous post, but the fact is I have no earthly idea why that's like that, and I suspect nobody else does either.

#

if I had to hazard a guess, something to do with some camera effect you are using?

ornate blade
#

Hmm Bugger. Was hoping it was just me being dumb. Thanks anyway ceebee :)

fervent tinsel
rain scaffold
#

Hi there, i get an error when i use terrain tree pain to add some trees (treee must use the Nature/Soft Occlusion shader. Otherwise billboarding/lighting will not work correctl)

Im using a costume shader, why does it force me to use a other one??

still carbon
#

because it likely has certain shader properties it wants to set on the shader to give them the full possible effects and per instance differences. Though it is strange that it would restrict it instead of just test if the shader has those properties

solar brook
#

Is there any documentation on how to create my own master node?

mental helm
#

Hi guys, Is it feasible to pass a Texture2DArray to a shader and "collapse" the array into a composite image? (i.e. the topmost layer overwrites the one underneath and so on). The texture size im targeting is quite small (128x128), but I need 10 layers.

still carbon
#

If i'm understanding you correct yeah, you can loop through the array and keep adding the sampled colors of each together however you like until you've looped through

#

Is it that you want a returned copy of the combined texture though? or is this to be purely for rendering on an object

mental helm
#

Purely rendering. I am preparing the texture2DArray at runtime to combine sprites into a composite from layers of outfits/appearances. The 128x128 textures is a small atlas for a single animation so the array only has to be rebuilt when the "animation" changes.

#

I'm currently just prototyping this, but its working through shadergraph with 5 layers by using 5 seperate sample2DTextureArray nodes each sampling incremented indexes and using the artistic Overwrite node to combine the next layer using the previous' alpha channel combined with the current alpha channel. I assume this could be optimized by writing actual shader code though...

still carbon
#

if you wrote a compute shader for it sure, but that would greatly restrict platform support. The regular shader code SG would produce for those operations isn't any less performance than how you'd write it manually in a shader.

mental helm
#

Fantastic. So upwards of 10 different Sampling nodes isn't something to be afraid of? Thank you for the info.

#

I suppose the total number of pixels of 10 (128x128) textures that the shader is sampling is still less than a single 512x512 texture.

still carbon
#

the amount of pixels sampled is determined by the screen resolution and the area the object you're rendering is covering of it, not the size of the textures

#

so for each pixels your sprite is covering, each of those samplers are executing for each texture in the array

#

This might be a bit heavy on mobile platforms, but always best to just do a test and see how it performs

#

will your screen with a bunch of them

mental helm
#

This is literally ONLY going to be used on characters. So only characters that have the option to be customized (NPC's and player character). Enemies wont need to dynamically change appearance and can be handled regularly. So it shouldnt be many on the screen at once.

still carbon
#

yeah should likely be fine then

#

also keep in mind if targeting mobile, only opengl es 3.0 supporting phones can use texture arrays, not es 2.0

mental helm
#

Thank you so much! Testing is next on my list but I just wanted to ask someone with shader knowledge if this was a bad idea. The work flow is much better than using mecanim for me, only having to make a simple editor to manage lots of atlases and a single quad for the player rather than 10 seperate spriterenderers.

#

Great, thanks! but this will be windows only. 😃

still carbon
#

ahh ok no worries for sure then

mental helm
#

The only thing that I wish I could change is I cant have any variable number of "layers" being sampled, as I have to add a sample node for each index. I guess there would have to be some sort of looping node to accomplish this.

still carbon
#

yeah that's one way you'd be able to write it a little cleaner since you could just loop through it in shader code using the same sampler

quaint grotto
#

do shaders use look up tables for trig functions

#

or will i have to make them

still carbon
#

what do you mean specifically

quaint grotto
#

well im using a lot of trig functions because i use complex numbers in polar form, and im trying to optimize, so i thought about making a lut and lerping

#

if they already do this though then it would be a waste of my time

still carbon
#

that's not enough to go on, what's the context, are you doing this in vertex shader or frag? you could put your complex numbers into the vert struct and let it interpolate it for you between the verts for example

quaint grotto
#

well im currently using DFT and converting to FFT ideally in fragment shader

#

some one else told me they did it in pixel shader rather than vertex shader so i just planned to do the same

still carbon
#

yeah most of it would have to be, but some data can likely be computed in the vertex and let the interpolator feed you the adjusted value for your fragment. I'm confused about what the lookup table would do for you though, how many different numbers are we talking about here and what kind of data would you use to determine where to grab from in the table?
You can write constants in the shader if needed which is often done when people need magic numbers

quaint grotto
#

i would plan to have an array of angles every 0.5 degrees and then say i had 0.67 i'd lerp between .5 and 1 in the array. rather than actually have it compute the trig value

#

its the only major heavy lifting the algorithm does

#

besides iterating, but thats usually unrolled anyway

#

but i equally dont know if its warrented on modern gpus

still carbon
#

ahh yeah that could be a performance boost, only way to know is test. That's going to involve grabbing values from an array or sampling textures though versus extremely fast inlined instructions that don't need to grab data from elsewhere.

#

But I guess the answer to your question would be that no, the shader compiler isn't quite that smart to know to construct some sort of lookup table from your various equations, your table would still be a fairly user defined construct using rules that only you're aware of due to knowing your needs.

quaint grotto
#

ah okay thanks for letting me know, i'll look into it then 😃

odd pilot
#

Would anyone be able to point me in the right direction to creating a world space coordinate shader; just like the one that comes with the prototyping asset pack, but double sided, and transparent?

amber saffron
#

@odd pilot Couldn't you just copy that shader and change the culling and blend mode ?

odd pilot
#

That's what I am trying to figure out how to do. I got the cull Off command to make it double sided. Now working on the blend mode. How do I do that?

amber saffron
#

In particular the "Alpha blending" part

odd pilot
#

@amber saffron Thanks very much! I'll look into that

amber saffron
#

At "Optional parameters", there's the "alpha" keyword, to auto-enable alpha blending

rain scaffold
#

Whats the problem with the terrain trer brush, i cant brush because my tree has a different shader, when i try to brush it comes this error : (treee must use the Nature/Soft Occlusion shader. Otherwise billboarding/lighting will not work correctl )

amber saffron
#

The error is self explanatory. Your tree should use the proper shaders.

rain scaffold
#

Why cant i use a costume one, i made

amber saffron
#

Maybe also check the terrain settings, and set the tree bilboard start to the maximum.

#

You can use a custom one, but you may encounter lighting issue, and will probably no have billboard working.

rain scaffold
#

Can't i just inlude the code in it.

#

The shader i made isn't well, but thr best i could finde for pixels

#

Someone know what's the best shader for this tree?

amber saffron
#

Unlit ?

rain scaffold
#

It makes it all transparent

#

From the other side i mean

amber saffron
#

Then make an unlit without face culling shader ?

#

I say unlit because the asset you're showing already has lighting painted

rain scaffold
#

You mean to edit the until shader?

amber saffron
#

Or create a new unlit shader and just change the cull mode

rain scaffold
#

I tried with the unlit shader that exists already, but i have the same issue i had before

#

It says use only nature/soft occlusion shader

#

If you like i could send you the tree and try it out

fervent tinsel
#

got SG POM working now on latest wip branch for it 😃

#

I hope SG will follow up

#

too bad that will not work on HDRP anymore due to PPv3

#

build-in PP Graph would be fancy, kinda missing that after getting used to it being always there on Unreal

frigid zinc
#

yeah that's a neat addition

amber saffron
#

@rain scaffold Like I said, the nature/soft shadow is just a warning, it should still render. Not when the tree is displayed as billboard, and probably with broken lighting (but you don't care for that)

dry island
#

[Paid] Need someone adventurous and creative to help me with a shader compatible with LWRP in Unity 2018.3

The shader should have (if possible) an effect like microfibre for woolen cloth similar to this:
https://youtu.be/3tcVzlUbNDc?t=88

Please PM and provide a link to the best examples of your custom shader work.

Thank you.

YouTube
Yibing Jiang
Real-time render test for GDC 2018 - Unity's short film 'Windup'

Hey guys, it's been a while. I have been working on our upcoming animated short film called 'Windup'. And this is a test scene from it! The test scene is a c...

▶ Play video
rain scaffold
#

@amber saffron ok, im using now the shader that its calling for, the normal tree soft occlusion leaves, but the problem is it doesn't receive lightning

fervent tinsel
#

@dry island is that effect on the video really done in shader? I looks like manually placed cards (ok bad wording on this, meant cards in general)

dry island
#

Perhaps.

I have a potential other solution in mind if possible, doing it with particles.

Placing cards manually... mmm we are talking about hundreds if not thousands. Sounds very inefficient. You will also notice there is some similar effect on her hair. Therefore I assume it is some shader effect.

fervent tinsel
#

you don't have to place them manually, still can do proc gen on tools, in houdini etc

dry island
#

Yeah could be. That is my plan C. doing it with some scattering tool in 3dsmax.

frigid zinc
#

yeah i'm pretty sure those are cards

#

if you watch the inspector closely there's 4 instances of the fabric shader on that sweater, Purls, KnitS, DetailS, and BorderS

#

likely one of those is for the fuzz, (Purl?)

#

ah seems purl is fancy stitching, so that must be the design part

stone sandal
#

those are knitting terms, knit stitches go forwards and purls go backwards

frigid zinc
#

maybe detail then

stone sandal
#

therefore would be two different types of lighting reactions

frigid zinc
#

yeah we're just trying to figure out the fine fuzz sticking out

stone sandal
#

who knew that my knitting obsession would be helpful in graphics? 🤔

frigid zinc
#

probably mesh cards, right?

stone sandal
#

i would guess mesh cards for those yeah, probably in that details instance

frigid zinc
#

nods

dry island
#

Possibly. It definitely is an experimental HDRP fabric shader. It says so. And there is an object called "fur_orig:Group2".

Now if this material is applied on planes, it is something we can't say from that video. I wish there was someone to let us know how this was done.

These are the kind of videos and tutorials many people need, instead or re-iterating the documentation combined with some marketing speech with nice images.

I was looking at the Unity Japan channel on youtube and the tutorials and workshops there are much more advanced compared to what we typically see in English. Too bad they are only in Japanese and there were no subs.

frigid zinc
#

well i can say with 98% certainty it's cards. that's pretty much the industry standard way to do it

fervent tinsel
#

HDRP Fabric Graph only does fuzzy like surface with wool option

#

but it doesn't change the geometry

frigid zinc
fervent tinsel
#

by the time that demo was presented it was separate shader

#

now it's ported to SG template

frigid zinc
#

games with similar effects used hair cards, like this game, Until Dawn

#

all those cards were the 'fuzz' on the beanie

fervent tinsel
#

DICE uses that for moss on battlefront rocks 😃

frigid zinc
#

it's cheap and effective technique

#

not easy to see in a badly compressed youtube video but you can kind of get the 'fuzzy' feel on the profile

dry island
#

Awesome. Then it is easier than I thought an won't cost me a dime! 😄

broken field
#

moss mapping

fervent tinsel
#

hmmmm, FPS Sample now has weapon FOV hack in shader graphs

#

also no hacked together shuriken particle shader for furnace, they've moved furnace effect to vfx graph (it was most demanding part of the level anyway due to expensive effect)

frigid zinc
#

fov hack?

fervent tinsel
#

for the gun

#

they used that have that on the modified HDRP before

#

I haven't checked if there's still some remainders of that there