Failed to compile fragment shader in engine version 1.58.2

[Volodymyr_Protskyi]

Hi all!

I have an issue with shaders after the engine was updated to version 1.58.2

Could someone help me?

[yaustar]

Have you check that they work with 1.57?

Can you share the shader code that is causing the error please?

[Volodymyr_Protskyi]

It’s not working on 1.57 neither

The shader code

uniform sampler2D texture_normalMap;
uniform float material_bumpiness;

void getNormal() {
    vec3 normalMap = mix(unpackNormal(texture2D(texture_normalMap, $UV)), unpackNormal(texture2D(blendNormalMap, $UV)), blendWeight);
    normalMap = normalize(mix(vec3(0.0, 0.0, 1.0), normalMap, material_bumpiness));
    dNormalMap = addNormalDetail(normalMap);
    dNormalW = dTBN * dNormalMap;
}

[mvaligursky]

@Gustav_Sterbrant - any thoughts on this? There were some change to $UV … should two of those work in a chunk?

[Gustav_Sterbrant]

Hello @Volodymyr_Protskyi!

I had some time trying to recreate this and found that the issue you are getting is because you are assuming the chunk has textures, so if the material doesn’t have a normal map applied, it won’t work. If you have a look at normalMap.js, you’ll see that is has guards against this with the #ifdef MAPTEXTURE.

If you add these to your chunk, you’ll see these issues go away

Now, there is another issue that you will encounter later. You have a detail normal map, but the $UV will generate only one UV parameter based on a bunch of different factors per chunk. Have a look at diffuse.js to see how we deal with detail albedo maps.

Thanks,
Gustav