glTF import material texture coordinates

p3mb

Hey there! I'm quite new to Godot. I've got a problem importing a simple mesh generated by a python script in Blender that use the brightness of the pixels of an image to move the vertices of a plane.

In Blender, in order to apply the image used in the script as a texture, I have to use a texture coordinate and a mapping node in the material as it is shown in the following image:

I have trying all the settings found on the web to export the file from Blender 4.4, glTF binary (glb), glTF separated, exporting the material, and with the material as a placeholder. However, I cannot get the material right when imported in Godot. And when I attempt to make a material in Godot to used the image as a texture I got the following:

In blender the model looks as following:

Any idea? can Godot recognize the coordinates and mapping node of Blender material? perhaps is the mesh an the way it was generated?

thanks in advance

kuligs2

p3mb can you use png instead of tiff?

p3mb

kuligs2 Hi, with the jpg does find the texture and is loaded but the mesh does not display it properly. Here are two snapshots of the Godot model importer:

p3mb

I've got the following warning when importing the model:

WARNING: modules/gltf/gltf_document.cpp:4082 - Invalid image definition in glTF file using both 'uri' and 'bufferView'. 'uri' will take precedence

In unreal the results with the meshes generated with python were similar. Because of this, I wondering whether the mesh produced with the python script in Blender lacks of certain information that makes possible to other software mapping the texture properly; or whether Godot load the material with the mapping of the texture or not. I have attempted to flip flop the texture to load it n Blender without mapping it but does not work, so I reckon I do not understand very well how the texture coordinate and mapping works in Blender and also Godot. Perhaps is related with the UV map.

p3mb

oki, I sorted it. It seems that Godot material does not recognize mapping and texture coordinates. So it is necessary to unwrap the texture in Blender and modify the UV. Then to add the UV map node in the shader.

xyz

p3mb It seems that Godot material does not recognize mapping and texture coordinates

It does, as long as uv coordinates are part of the vertex data. In your case you've been using a projection in the Blender shader which procedurally generates mapping coordinates without them existing as per-vertex data.

p3mb

xyz I see, thanks.