I am really new here and I see this tool is very interesting, but once I try to use with my project; it seems it doesn't work properly as like video.

What I notice is when I make Raynarch object, it gives me the Raymarch in hirarchy and object, but in object doesn't show any mesh render. I end up try everything and it doesn't work so I wonder it is about Unity version or script doesn't support Unity that later than Unity 2017 thank you

In my test example, I have two unit sphere raymarch objects spaced a unit apart. The blend intensity is set to 10, which shows the balls merge nicely. But it starts to clip at a camera distance of about 13 regardless of the camera clipping plane or the Raymarcher draw distance. It follows a pattern where doubling intensity halves the max camera distance. With intensity 20, it starts to clip around 6.9. At intensity 40, it clips around 3.7. At intensity 5, it clips close to 26. None of the parameters in the editor seem to affect this, and I find myself unable to see how to change it in the .cginc files, since I don't understand it. Any help appreciated! 

Here is the blend snippet:

    float res = exp2(-$intensity*a) + exp2(-$intensity*b );
    return -log2( res )/$intensity;

To be concrete about what I need: I want to be able to have large intensities and render them at large camera distances, just like is possible with the default polynomial smooth min. I'm using this to output video frames, so I'm not too concerned about performance.

When the camera's field of view is narrowed, the result of the raymarching is sensitive to camera distance, causing the blob's skin to go outside its eyes when the camera is far away, making the eyes disappear (in gif below). I want the narrower field of view to give scenes a small, toy-like look, but I also want to be able to bring the camera close or far without changing the effective shape of the blobs. 

I tried increasing resolution and adding steps and extra accuracy, but I was unable to fix. Any ideas?

I'm trying to use this to create some experimental effects and would love a way to use a rendertexture as a texture source - is there any way to do this currently?

Before I found the toolkit I was working on my own raymarcher. I learned a ton from it and got some pretty good results, but the toolkit does (mostly) everything I want to do and is far more performative and easy to use.

That said I had a few effects that I built in my own raymarcher that aren't present in the toolkit which I now want to port over.

Fortunately the workflow you've provided with snippets allows me to do this, but when it comes to unity programming (especially shaders) I am very much at the level of a monkey banging their head against the keyboard, so I'm struggling with a few bits.

In my raymarcher I had a simple specular highlight function that would add gloss based on the position of the scene's light (I could only support one light for my raymarched scene.) The code looks like this:

float3 applySpecular(float3 col, float3 ray, float shadow) {
    float3 reflected = ray.xyz - 2.0 * dot(ray.xyz, n) * n;
    float specular = max(dot(reflected, _lightDir), 0.0);
    specular = pow(specular, _specularHighlight);
    col += specular * _lightCol * shadow * _specularIntensity;
    return col;
}

_lightDir is a

lightObject.transform.forward

of a light object which is passed to my raymarching shader as a float3

I experimented with the transform snippet input type but wasn't able to get a useful result.

So all of this is a long winded way of asking. Do you have any suggestions for how I might get that

lightObject.transform.forward

Into my material snippet or use the resulting float4x4 from the transform input to extract the vector I need?

Thanks.

>>In Properties:
[Enum(Equal,3,NotEqual,6)] _StencilTest ("StencilTest", int) = 6

>>In Subshader:

        Stencil{
            Ref 1
            Comp [_StencilTest]
       
        }


but it just breaks when i change it to equal ie-3. is it possible to create something alike?

Thanks

Thanks for the help, this is so amazing and I'm jumping in joy :)

Can you confirm that *all* of the "snippets" (not just materials?) have the Cg standard functions available?

Can you document the additional symbols/functions which we can assume are present in the snippet namespace? Alternately, is there a file somewhere that we can browse their names?

Finally, some of the input types for MaterialSnippet are not documented. The one which interests me is "Texture 3D", which I would love to use. What file format does this expect for its input? Unity does not as far as I know have a standard file format for 3D textures.

Thanks.

https://kev.town/raymarching/reference/snippets/

…and I have tried creating a material snippet by duplicating one of the material snippets in Snippets/Materials.

I find that I can return a single color, and that color will be dutifully shaded according to lighting and then shadowed.

But let's say I want to write my own shading— I want to draw a solid color, or cel-shade, or rim shade or whatnot. Can this be customized?

Are there any plans to release the source?

-Ryan

I would really like to buy this plugin, but I can't use Paypal. Is there another payment method you could enable? I know I've paid through itch.io before without having to go through Paypal.