// ShaderLab doesn't understand virtual texture inputs, they need to be processed to replace the virtual texture input with the layers that compose it instead
public static GraphInputData ProcessVirtualTextureProperty(VirtualTextureShaderProperty virtualTextureShaderProperty)
{
var layerReferenceNames = new List <string>();
virtualTextureShaderProperty.GetPropertyReferenceNames(layerReferenceNames);
var virtualTextureLayerDataList = new List <SubPropertyData>();
// Skip the first entry in this list as that's the Virtual Texture reference name itself, which won't exist in ShaderLab
foreach (var referenceName in layerReferenceNames.Skip(1))
{
var layerPropertyData = new SubPropertyData()
{
referenceName = referenceName, propertyType = PropertyType.Texture2D
};
virtualTextureLayerDataList.Add(layerPropertyData);
}
var virtualTexturePropertyData = new GraphInputData()
{
referenceName = virtualTextureShaderProperty.displayName, propertyType = PropertyType.VirtualTexture, isKeyword = false
};
virtualTexturePropertyData.isCompoundProperty = true;
virtualTexturePropertyData.subProperties = virtualTextureLayerDataList;
return(virtualTexturePropertyData);
}
