More shaders for painter ?

AshuraDX · Jan 2015

Hey folks, I was wondering if anyone had a few additional custom shaders for substance painter ?
I found a sepc/gloss pbr shader here somewhere but what I'd really need is a simple blinn shader (working with last-last-gen assets from time to time)

I tried copieing shaders from Substance Designer over to Painter but with no success

final_fight · Jan 2015

I think, you work in Painter with Metalness/Roughness workflow but when you're done can export texture in Specular/Glossiness.

final_fight · Jan 2015

Also, there's an article on Toolbag site that covers process of manual converting M/R maps to S/G maps.

http://www.marmoset.co/toolbag/learn/pbr-conversion

AshuraDX · Jan 2015

final_fight wrote: »

Also, there's an article on Toolbag site that covers process of manual converting M/R maps to S/G maps.

http://www.marmoset.co/toolbag/learn/pbr-conversion

I know about that BUT
these maps are too designed for a PBR Spec/gloss shader
not a true last gen shader, while this certainly will be closer to what I need it still isn't exactly right

substance designer coudl also convert the maps for me

h2olt · May 2015

Does anyone have any more information on this, or is Painter a strictly PBR environment?

I'd like to use painter to quickly layout some last gen models. I need a Diffuse (lighting baked in, not an albedo) a specular (Not quite the same as the specs used in s/g shaders)

And on a final note s/g is no more last gen than m/r. Those marmoset docs are explaining the differences between them and why you would use one over the other. For those that thought tldr, my takeaway is that s/g is a little more expensive, bit higher fidelity at the material transitions than m/g.

I may end up screenshoting the shader view, and compiling what I need to bake in some lighting.

Jerc · May 2015

I'm working on a Blinn Phong shader for Painter, I should have something by the end of the day.

Fwap · May 2015

That would be awesome Jerc, perfect timing too, just started a project for last gen graphics.

Jerc · May 2015

Hey just an update, the shader is still in the works, will post it here soon

elec²ron · Jun 2015

Any update on this? would be handy to have.

Jerc · Jun 2015

Here it is. It uses a Specular and Gloss channel, and supports transparency, emissive and AO channels additionally.
The light position is not tied to the environment and has to be moved around manually through the shaders parameters for now.

https://dl.dropboxusercontent.com/u/9804576/BlinnPhong.glsl

Fwap · Jun 2015

Thanks Jerc gunna have a play around tonight when i get home.

elec²ron · Jun 2015

Thanks vmuch

you guys are the best.

ScottJ · Sep 2015

I had a few issues with this shader, first off when right clicking and save as it just wounldnt work, Jarc gave me this link https://share.allegorithmic.com/libraries/84 - the code looks the same so my guess was possibly an encoding issue with chrome when saving as?

So if you have issue try that link

My next issue was the shader didnt act correctly, it seems to have an issue with the specular rendering, I have been playing around with this the last few hours and using the internet came up with a fix.
What it actually does I am not 100% sure but it calculates the way the specular is applied to the mesh
replace code from line 146 - 153 with the following

vec3 contribspec = vec3(0,0,0);
  if(dot(N, L) > 0)
   {
      // half vector
      vec3 reflectDir = normalize(L + V);
	float specAngle = max(dot(reflectDir, N), 0.0);
    contribspec = pow(specAngle, glossiness*64)*specularColor;
   }

it works much better for me, though it may still need changes / tweaks

More shaders for painter ?

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