Problem painting landscape

[bvk]

Hi All

I am in the Unreal Engine 5 Environment design course and am using Unreal Engine 5.2. I’m having a problem painting the landscape.

I have loaded the textures and created the landscape material. I can paint fine for a while, and then one of the quads goes missing. I can paint into the quad with other layers before it goes missing, and I’ve been able to paint with each of the various layers. As such, I don’t think it’s a problem with any specific layer.

Any idea what might be causing this and how it might be fixed?

thanks,

Brian

EDIT: The problem apparently has to do with the following error message from the Output Log. I’m not sure what it means, exactly. Can anyone clarify what it means? I think I’ve specified too many layers and the shader can’t cope. I used 6 layers, but the course video used 3.

LogShaderCompilers: Warning: Failed to compile Material /Game/Material/landscape.landscape (MI:/Temp/Untitled_1.Untitled_1:PersistentLevel.Landscape_0.LandscapeMaterialInstanceConstant_136) for platform PCD3D_SM6, Default Material will be used in game.
Shader is using too many Samplers: 18 (only 16 supported)

[Tuomo_T]

One way to possibly fix this is to create a texture atlas and reference that for your layers.

The issue appears to be a hardware limitation, it’s interesting to note that the same limit exists in Unity as well. Or so it seems.

Googling that error suggests other possible solutions as well.

[bvk]

Many thanks, for your response. Much appreciated!

I’ll have to look up how to do a texture atlas. For now, I’ve gone to only 3 layers as in the course video, and not 6 as I’d attempted.

What might the hardware limitation be? I have a GTX 3090 and is is relatively high-end compared to many gamer systems, so would be surprised if this were the cause.

Are others in the class also experiencing this issue?

[Tuomo_T]

You’re the first to come across this, and unfortunately I don’t have any more information regarding the hardware aspect. Though I have a feeling it’s not a raw horsepower limitation.