"Stained Glass" Shader

[RebelChum]

Seems I've tried a dozen different variations to try and make a colored .tga design look like a stained glass window.

 

I've tried mapping in a Tcgen environment, mapping in a reflective glass. 

 

Even tried making the colored texture transparent and putting a pane of base glass behind it.

 

The best I've come up with is a surface light shader but then it just looks like a glowing wall rather than a window with light coming from behind it. Any ideas?

 

 

 

Best iteration so far:

 

 

 

textures/the_enclave/stglass

{

q3map_material Glass

surfaceparm nonopaque

surfaceparm trans

surfaceparm alphashadow

cull twosided

qer_trans 1.0

    {

        map textures/the_enclave/stglass

        alphaFunc GE128

        blendFunc GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA

        depthWrite

    }

    { 

        map $lightmap 

        rgbGen identity 

        blendFunc GL_DST_COLOR GL_ZERO 

        depthFunc equal 

    }

    {

        map textures/the_enclave/stglass

        blendFunc GL_ONE GL_ONE

rgbGen identity

glow

    }

}

 

 

Just looks like a glowing wall. Is this the best I can hope for with the engine?

 

[MoonDog]

surfaceparm lightfilter

Causes the Q3Map2 light stage to use the texture's RGB and alpha channels to generate colored alpha shadows in the lightmap. For example, this can be used to create the colored light effect cast by stained glass windows. This can be used with surfaceparm alphashadow.

[RebelChum]

surfaceparm lightfilter

Causes the Q3Map2 light stage to use the texture's RGB and alpha channels to generate colored alpha shadows in the lightmap. For example, this can be used to create the colored light effect cast by stained glass windows. This can be used with surfaceparm alphashadow.

 

 

So far as I can tell that didn't change anything. I even removed alphashadow to see if it was conflicted at all.

 

 

Current .shader settings

 

 

textures/the_enclave/stglass

{

q3map_material Glass

surfaceparm nonopaque

surfaceparm trans

surfaceparm lightfilter

cull twosided

qer_trans 1.0

    {

        map textures/the_enclave/stglass

        alphaFunc GE128

        blendFunc GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA

        depthWrite

    }

    { 

        map $lightmap 

        rgbGen identity 

        blendFunc GL_DST_COLOR GL_ZERO 

        depthFunc equal 

    }

    {

        map textures/the_enclave/stglass

        blendFunc GL_ONE GL_ONE

rgbGen identity

glow

    }

}

[MoonDog]

Much like a shadow casting grate, you'll need a lightsource behind the material pointing in the desired direction.

 

Is your source material setup properly for transparency? I imagine it'd have to be for lightFilter. I've never used lightFilter tbh.

[RebelChum]

Thanks for all your help, moondog. I think it's fine the way it is. I coupled it with some nice entity lights and decals and it looks fairly convincing.

 

Appreciate your help!

[MoonDog]

No problem! I wouldn't mind seeing a shot or two of your results. I've never used lightFilter, curious to see how it turns out.

[RebelChum]

No problem! I wouldn't mind seeing a shot or two of your results. I've never used lightFilter, curious to see how it turns out.

 

 

Not sure if I should keep the light ray in there.

[RAILBACK]

Have you tried using ShaderED? I find it helps sometimes.

[RebelChum]

Have you tried using ShaderED? I find it helps sometimes.

 

Never heard of it/seen it.

[MoonDog]

Never heard of it/seen it.

 

It's a deprecated shader preview utility, that is supremely out of date.

[RAILBACK]

ShaderED should be in your tools folder with the JK editing tools and/or Radiant 1.4 or 1.5 etc.