Material node changed behavior after introduction of PhysicalMaterial/UnlitMaterial about view3dscene HOT 4 CLOSED

Fixed (in commit castle-engine/castle-engine@e6d96db ). It was broken for older GPUs (where we have to use an older "fixed-function" pipeline for rendering), it was working on new GPUs so I didn't notice this regression.

Thanks for testing!

The new version should be on http://michalis.ii.uni.wroc.pl/view3dscene-snapshots/ in ~15 minutes.

BTW, note that there have been some changes in how we treat Material diffuse and emissive. In short, it is now more correct, with respect to the X3D 3 specification. See https://castle-engine.io/wp/2020/03/07/physically-based-rendering-and-lots-of-other-lighting-materials-upgrades-in-castle-game-engine-and-x3d-4-0/ , section Backward compatibility. Of course it was never intended to break the working of Material.emissiveColor :)

As for glTF: This is a work in progress. Both PBR materials and animations will be optimized in the future. Please feel free to report bugs/slowness on particular glTF models, as separate tickets.

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@elmkni I've been doing lots of improvements and optimizations to glTF lately (see recent news https://castle-engine.io/wp/ ). In effect the Bee model, that you linked above, now correctly opens, with texture, and it animates with 60 FPS :)

It can be already tested with latest view3dscene on https://michalis.ii.uni.wroc.pl/view3dscene-snapshots/ .

Note that it doesn't (yet) look exactly like it should -- because it uses PBR specular-glossiness parameters, and doesn't contain PBR metallic-roughness parameters. We support it only partially. A warning about it is done. For now, one should provide materials using PBR metallic-roughness parameters, which is part of glTF 2.0 specification (PBR specular-glossiness is only an extension).

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Hi Michalis,

I have tested view3dscene-3.18.0-win64-x86_64.zip - 2020-04-02 12:48 and everything is OK now!

Thanks a lot for the quick respond and fix!

With best regards,

Elmar

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Hi Michalis,

it's me Elmar.

Sorry for the late response, I had not checked my emails for some time, so that I overlooked your message, but I already have tested the latest (3.19.0-win64) version of View3DScene and indeed
the bee now has a texture and moves really fast and smooth!

Thanks very much -- View3DScene is great!

Elmar

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