Runtime Virtual Texture renders black

Development Rendering
1

Hi,

As it said in the tile, I did all the settings to create some RVT (just to try and learn it so never mind of the very bad textures) but it renders all black. The weird is the colours was good just before but I had some weird lines on the mesh (it’s the rock asset from the StarterContent). I have clicked on “copy rotation” and “copy bounds” on the 2 RVT that I created and the ugly line disappeared. You can see the changing here : Screen capture - 948bf8b68b50c457fb122a80c4eba55b - Gyazo

But then it became black, just like this :

Capture d’écran 2020-12-03 055830.jpg
Capture d’écran 2020-12-03 055830.jpg1027×655 93.7 KB

This is the shader of my first mat (the landscape) :

Capture d’écran 2020-12-03 060339.jpg
Capture d’écran 2020-12-03 060339.jpg1599×792 214 KB

And this is my second mat (for the rock and the sphere) :

Capture d’écran 2020-12-03 060403.jpg
Capture d’écran 2020-12-03 060403.jpg1599×753 259 KB

2

Ok, problem solved : The reason was the RVT Volume, as I suspected. The “copy bounds” thing has set the Z height on 0 so it could not see any texture. I have just upscale it a bit. But now, I come back with the weird color lines, just before. And I don’t know where it come : Screen capture - fed7ae60b3f2ec02ec39e1e2de27484f - Gyazo

2 Likes
3

Ok, problem solved also : The reason was the saturation. Did not understand why exactly but as far I got it, the alpha must not exceed 1. Though, it did. I added another saturate node juste before the alpha pin of the BlendMaterialAttributes. Now it works : Screen capture - 177e6fdeb8cbc4a100a567a92ed4ba37 - Gyazo

2 Likes
4

Hi,

Yep, this work. For those of you that are new like me…in the World Outliner, top right (by default), search for RuntimeVirtual TextureVRuntime…(the volume box), and under the Virtual Texture section, select your virtual texture. Solved.

1 Like
5

I tried everything… but my Virtual Texture always appears black.

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3 Likes
6

Did you find solution?

7

I had the same problem, i disabled nanite on the model and then it worked for me.

1 Like
8

Got the exact same issue.
It worked for me the first time and then all turned black when I’ve reload the project.

I didn’t find the solution yet.

9

same issue, did anyone find a solution yet? this is deal-breaking for landscapes

10

Thanks! This was my issue also, using it on a large static mesh, not landscape.

11

Unreal 5.5 does not enable virtual texture support by default, you need to check whether this is checked

1 Like
12

i just found something i wasnt aware of before:

some landscape components rendered black and some other not…in the same landscape with a proper bounding volume.

i found the setting on the landscape component: “draw in virtual textures” enabled on the ones that rendered black. turning it off sets the value to the setting on the main landscape actor (it is enabled there as well)…seems this double enablement actually turned the feature off :wink:

i didnt enable RVTs in my shaders for over a year since i couldnt figure out why it rendered black..embarassing :smiley:

13

then how does the material figure where to send RVT nodes values to