add texture to grouped meshes

[ramymabrouk]

hi,

i am exporting a mesh array from blender and applying texture on the meshes, it works fine if i dont group the mesh array into a single mesh, which is required to implement drag and drop, it generates this error "(index):1 [.CommandBufferContext]GL ERROR :GL_INVALID_OPERATION : glDrawElements: attempt to access out of range vertices in attribute 2" when i merge textured meshes or add texture to merged meshes, any ideas ? (the imported .babylon file is attached) 

sofa.babylon

[gryff]

Hi Ramy, welcome to the forum. I'm no scripter so I will leave them to explain the error and how to get around it in code.

However, there are some workarounds:

1. Merge the meshes in Blender - probably have to rework the UVs though.

2. A solution that I suggested on this thread

A variation on 2 would be to make a simple LOD mesh for the whole sofa, make it transparent,  pickable and the parent to all the other messages.

cheers, gryff

[ramymabrouk]

Hi gryff,

Thank you for your answer, actually I used Tags instead of merging because there is no unmerge utility and it has to use one texture and in some cases the same mesh groups may have more than one texture.

 

thank you

[NasimiAsl]

you can have a more texture with shader builder but need to know where you want to use 

can you make playground or any example?

[GameMonetize]

Could you share your code on the playground? Seeing the error live could help a lot

[ramymabrouk]

Hi,

unfortantly I do not know how to upload files to the playground, please find my code and the attached files

 

function addsofa(filename) {
        // The first parameter can be used to specify which mesh to import. Here we import all meshes
        BABYLON.SceneLoader.ImportMesh("", "assets/scenes/", filename + ".babylon", scene, function (newMeshes) {
                // Set the target of the camera to the first imported mesh
                // camera.target = newMeshes;
                tagname = randString(10);
                for (i=0;i<newMeshes.length;i++){
                        newMeshes[i].material = new BABYLON.StandardMaterial(tagname + i, scene);
                        newMeshes[i].material.emissiveTexture = new BABYLON.Texture("assets/textures/tex5.jpg",scene,true,false,2)
                        newMeshes[i].material.diffuseColor = new BABYLON.Color3(0,0,0);
                        newMeshes[i].material.specularColor = new BABYLON.Color3(0,0,0);
                        
                        BABYLON.Tags.EnableFor(newMeshes[i]);
                        newMeshes[i].addTags(tagname);                       
                }
                var newMesh = new BABYLON.Mesh.MergeMeshes(newMeshes);
        });        
}

the last files is the one generating the error

sofa.babylon

[GameMonetize]

You can just save your .babylon to dropbox or onedrive and reference it

Does your code works without tags stuff?

[ramymabrouk]

the tags stuff is added later, i have used it to identify the meshes, it is working great

[GameMonetize]

So sorry, I'm not sure to understand what is your problem then

[ramymabrouk]

so far I have solved my problem, in fact the merging approach was not the best one, but I thought the error I have found may be something important, and I am very thankful for your interest.