Isolate shadow shader

[jessepmason]

Hello, would anyone know how to create a shader where you can just have a flat texture with shadows... no lighting information?

So basicly an emissive texture with shadows overlaying it... i hope that makes sense

I have tried modifying the StandardMaterial with no luck.  

[GameMonetize]

Why not simply using the StandardMaterial? Set specularColor and DiffuseColor to black, set emissiveTexture and you're good to go

[jessepmason]

unless I am missing something, I dont think the shadows go over top the emissiveTexture :S

 

This is a code from the default.fragment.fx

all the shadows/diffuse go into the diffuseBase and the emissive stuff go into the emissiveColor

 // Composition
vec3 finalDiffuse = clamp(diffuseBase * diffuseColor + emissiveColor + vAmbientColor, 0.0, 1.0) * baseColor.rgb;

[Wingnut]

Hi JM!   Hi DK!  

JM:  http://playground.babylonjs.com/#1NVRFH#1  Shadows on emissiveTextures.  *shrug*  Be well.

[jessepmason]

Hey Wingnut!

 

thanks for the example but unfortunately doesn't work for what I am trying to do

 

even though its balancing the values between the diffuse and emissive levels its grabbing the light information and adding it ontop of the diffuse

 

thus not making it just the emissive texture and the shadow from the torus

[GameMonetize]

Ok understood. In this case you were right. the best way is to start from stdMaterial code and only keep shadows.

 

But beware: Shadows now work with diffuse so you will have to change the way it generates the final color

[jessepmason]

Darn! I'll continue to try and dissect the stdMaterial

Thanks for the help!

although it might be a cool feature to add for people who have textures with baked lighting information and just need the shadows from an animated object