How to make model more "sharp"?

[bingo-soft]

By default my model looks very pale or vague. Just like this:

For example, compare that to xeokit viewer:

How can I get a look similar to xeokit with more contrast and more sharpness? Thank you in advance!

[elalish]

You are comparing to a non-physical rendering. The sharpness is due to rendering black lines on edges, which is not something glTF supports. Your colors are also probably not being exported correctly - maybe missing sRGB conversion or ignoring some other transform applied in your baseline renderer. Your materials also appear to be fully matte, which isn't very realistic - you'll get more realism by choosing appropriate roughness and metalness values.

[adamwolf]

I had a similar problem, actually, (not with colors, but with outlines). I built a fragment shader that uses depth and normals to detect edges, and adds an outline. (This approach can't be absolutely perfect, but I think it worked out well enough for what I need it for.) I rigged it into a custom pmndrs postprocessing effect, and then into a custom element so it works mostly like the built-in model-viewer-effects. Unfortunately, I'm a little swamped this week with a deadline so I can't set it up for sharing right this moment.

(I think there's something I am missing with color-grading here, but I haven't looked into it yet.) Here's the same model with and without the new shader.

[elalish]

That's amazing! Looking forward to taking a look when you're ready to share. In fact, this would make a wonderful addition to our examples if you'd be willing to make a PR. I've seen several requests from people wondering how to make their own custom post-processing effects.

[bingo-soft]

Agree. It looks really fantastic!

[george-martinec]

Please share code 🙏🏻 @adamwolf