ARCore Sceneform SDK linking materials Error? - kotlin

Question

I just have a simple table model has a 3 segments Top,Brick,Bottom. I applied Normal maps to the bottom part and it was successful but when i tried to apply normal map for the Brick and Top part it says, duplicate field name. I can figure it out what error it says. I was doing what says in this documentation. https://developers.google.com/sceneform/develop/sfa
{
animations: [
{
path: 'sampledata/models/sculpting-table/source/SculptingTable.fbx',
},
],
materials: [
{
name: 'TableTop',
parameters: [
{
baseColor: [
1,
1,
1,
1,
],
},
{
baseColorMap: 'SculptingTable_TableTop_AlbedoTransparency',
},
{
normalMap: null,
},
{
interpolatedColor: null,
},
{
metallic: 0,
},
{
metallicMap: null,
},
{
roughness: 1,
},
{
roughnessMap: null,
},
{
opacity: null,
},
],
source: 'build/sceneform_sdk/default_materials/fbx_material.sfm',
},
{
name: 'TableBottom',
parameters: [
{
baseColor: [
1,
1,
1,
1,
],
},
{
baseColorMap: 'SculptingTable_TableBottom_AlbedoTranspare',
},
{
normalMap: 'bumps',
},
{
interpolatedColor: null,
},
{
metallic: 0,
},
{
metallicMap: null,
},
{
roughness: 1,
},
{
roughnessMap: null,
},
{
opacity: null,
},
],
source: 'build/sceneform_sdk/default_materials/fbx_material.sfm',
},
{
name: 'TableBricks',
parameters: [
{
baseColor: [
1,
1,
1,
1,
],
},
{
baseColorMap: 'SculptingTable_TableBricks_AlbedoTranspare',
},
{
normalMap: null,
},
{
interpolatedColor: null,
},
{
metallic: 0,
},
{
metallicMap: null,
},
{
roughness: 1,
},
{
roughnessMap: null,
},
{
opacity: null,
},
],
source: 'build/sceneform_sdk/default_materials/fbx_material.sfm',
},
],
model: {
attributes: [
'Position',
'TexCoord',
'Orientation',
'BoneIndices',
'BoneWeights',
],
collision: {},
file: 'sampledata/models/sculpting-table/source/SculptingTable.fbx',
name: 'SculptingTable',
recenter: 'root',
},
samplers: [
{
file: '/Users/vishweshwaran/Downloads/sculpting-table/textures/SculptingTable_TableBricks_AlbedoTranspare.png',
name: 'SculptingTable_TableBricks_AlbedoTranspare',
pipeline_name: '/Users/vishweshwaran/Downloads/sculpting-table/textures/SculptingTable_TableBricks_AlbedoTranspare.png',
},
{
file: '/Users/vishweshwaran/Downloads/sculpting-table/textures/SculptingTable_TableBottom_AlbedoTranspare.png',
name: 'SculptingTable_TableBottom_AlbedoTranspare',
pipeline_name: '/Users/vishweshwaran/Downloads/sculpting-table/textures/SculptingTable_TableBottom_AlbedoTranspare.png',
},
{
file: '/Users/vishweshwaran/Downloads/sculpting-table/textures/SculptingTable_TableTop_AlbedoTransparency.png',
name: 'SculptingTable_TableTop_AlbedoTransparency',
pipeline_name: '/Users/vishweshwaran/Downloads/sculpting-table/textures/SculptingTable_TableTop_AlbedoTransparency.png',
},
{
file: '/Users/vishweshwaran/Downloads/sculpting-table/textures/SculptingTable_TableBottom_Normal.png',
name: 'bumps',
injections: [
{usage: "Normal",},
],
},
{
file: '/Users/vishweshwaran/Downloads/sculpting-table/textures/SculptingTable_TableBricks_Normal.png',
name: 'bumpsBrick',
injections: [
{usage: "Normal",},
],
},
],
version: '0.54:2',
}
About is the SFA file of the model.
Validating Materials: Validating material: Jsonnet Error: [1]: RUNTIME ERROR: duplicate field name: "Normal"
This is the log error that appears.

Answer 1

I got the answer we needed to add material_name attribute inside the injection block too. This will get rid of the duplication of "Normal" keyword.
{
file: '/Users/vishweshwaran/Downloads/sculpting-table/textures/SculptingTable_TableBottom_Normal.png',
name: 'bumps',
injections: [
{
material_name:"name_of_your_material",
usage: "Normal",},
],
},