Problem about transparency rendering

Emre · December 12, 2022, 9:39am

Hello, I’m having a strange problem. I wanted to add shore to the water. I made a separate model for this and assigned it a transparent surface material. For some reason it doesn’t appear when he’s above the water. It only appears in the refraction camera. If the water is opaque, there is no problem. But if it is transparent I have this problem. I made a video to explain the problem better.

I have depth, refraction and reflection cameras for the water effect. I think it has something to do with them, but I don’t understand why. What do you guys think could be the reason?

mafiesto4 · December 15, 2022, 10:54am

Maybe transparency sorting by depth (objects are drawn from back to front) is the problem here? Maybe manual transparency order per-material would help?

Emre · December 15, 2022, 12:38pm

Thanks. So how do I set the manual transparency order for each material? I couldn’t find any information in the manual.

Preben · December 16, 2022, 7:46am

Emre you cant at the moment, it will require a material/header update to the shaders , mafiesto4 i could add it to this pull if you like ? it already require a update so would fit perfectly there , let me know On top rendering using MinDepth and MaxDepth. by plemsoft · Pull Request #839 · FlaxEngine/FlaxEngine · GitHub

Preben · December 16, 2022, 7:54am

This is what i could add , would only take 1 hour or so , let me know ?

Emre · December 26, 2022, 6:27pm

Hi, any progress? Have you guys forgotten me already?

mafiesto4 · December 28, 2022, 7:04pm

I added Transparency Sort Priority - ability to sort translucent objects to the roadmap for the upcoming 1.5 update (soon). I think it should help with this problem.

Emre · December 28, 2022, 8:27pm

Great! Thanks!

Preben · December 29, 2022, 12:35pm

Great added it to this pull , as it also need a material update

github.com/FlaxEngine/FlaxEngine

On top rendering using MinDepth and MaxDepth.

FlaxEngine:master ← plemsoft:PE-1.4-7

opened 08:42AM - 29 Nov 22 UTC

plemsoft

+342 -27

PE: csharp allow setting material minimum and max depth, for on top rendering. …PE: allow setting material minimum and max depth, for on top rendering. PE: Also support on top SpriteRender for crosshair... PE: Reserve some floats in materialinfo11 to allow new features in the future without changing header version and upgrading shaders. PE: Static FOV, material will always have this static FOV even if camera change FOV. Usage: Min Depth: 0.0 , Max Depth: 0.1 Usage: Static FOV: 60 @mafiesto4 Added Static FOV to this pull as it fit with the material/header upgrade, so it now fix both weapon clipping and weapon FOV issues. @mafiesto4 Added distance bias to control draw order, can be used to set transparency sort priority. Added to this pull as this also require a material update :) ![distancebias](https://user-images.githubusercontent.com/18662417/209951659-64e712fa-2625-4664-ac0d-39e32ebb9254.jpg)

mafiesto4 · January 26, 2023, 5:39pm

Added transparency sorting property per-object (eg. model, particles, sprite, 3d text) to support manual sorting: Add `SortOrder` to drawable object types for transparency sorting ove… · FlaxEngine/FlaxEngine@adfe3ad · GitHub (for upcoming 1.5 update)

Emre · January 26, 2023, 10:43pm

Awesome! Thank you!

Emre · January 27, 2023, 11:36am

Just to be sure, I’m asking; I will be able to change the transparency order of the two models(or two different materials) with this update, right?

mafiesto4 · February 1, 2023, 12:51pm

Each model can have separate Sort Order - so you can for example put water surface to be rendered before particles (or vice-versa).

Emre · February 6, 2023, 12:12pm

I tried it and it works really great. Thank you very much!