KDAB_custom_material.txt

KDAB_custom_material extension

# JSON Schema

{
    "extensionsUsed": [
        "KDAB_custom_material"
    ],
    "extensionsRequired": [
        "KDAB_custom_material"
    ],
    "materials": [
        {
            "name": "MySemDiffuseMaterial",
            "pbrMetallicRoughness": {
                "baseColorFactor": [ 0.5, 0.8, 0.0, 1.0 ]
            },
            "normalTexture": {},
            "occlusionTexture": {},
            "emissiveTexture": {},
            "alphaMode": "BLEND",
            "alphaCutOff": 0.5,
            "emissiveFactor": [0.2, 0.4, 0.1],
            "doubleSided": false,
            "extensions": {
                "KDAB_custom_material": {
                    "type": "SemDiffuse",
                    "properties": {
                        "diffuseInnerFilter": [1.0, 0.5, 0.25, 1.0],
                        "diffuseOuterFilter": [1.0, 0.5, 0.25, 1.0],
                        "diffuseMap": { "index": 2, "texCoord": 1 }
                    }
                }
            }
        }
    ]
}

# Kuesa Material Description -> used to generate C++/QML Kuesa classes

{
    "type": "SemDiffuse",
    "properties": [
        { "name": "diffuseInnerFilter", "type": "vec4" },
        { "name": "diffuseOuterFilter", "type": "vec4" },
        { "name": "diffuseMap", "type": "texture2d" }
    ],
    passes: [
        {
            "blending": {
                "function": "Add",
                "sourceRGB": "SourceAlpha",
                "sourceAlpha": "SourceAlpha",
                "destinationRGB": "OneMinusSourceAlpha",
                "destinationAlpha": "One"
            },
            "type": "Transparent|Opaque|TransparentAndOpaque|MultiPassTransparent"
            "shaders": [
                 {
                    "format": {
                        "api": "OpenGLES",
                        "major": 2,
                        "minor": 0
                    },
                    "type": "Fragment",
                    "code": "#version ..."
                    "graph": "qrc:/path/to/graph"
                 }
            ]
        }
    ]
}

# The generator will generate SemDiffuseMaterial, SemDiffuseProperties,
# SemDiffuseShaderData and SemDiffuseEffect

# Once classes have been generated:

##  the .pri needs to be imported in the
  project .pro

## GLTF2Importer::registerCustomMaterial<MaterialClass, PropertiesClass,
  EffectClass>("SemDiffuse"); needs to be called prior to parsing the gltf
  file.