public override void CreateConnections(MaterialExpressionTextureSample unrealNode, Material unrealMaterial, ShaderGraphBuilder builder)
{
if (unrealNode.TextureObject != null)
{
builder.Connect(unrealNode.TextureObject, unrealNode.Name, SampleTexture2DNode.TextureInputId);
}
builder.Connect(unrealNode.Coordinates, unrealNode.Name, SampleTexture2DNode.UVInput);
}
public override void CreateConnections(MaterialExpressionPower unrealNode, Material unrealMaterial, ShaderGraphBuilder builder)
{
builder.Connect(unrealNode.Value, unrealNode.Name, 0);
if (unrealNode.Exponent != null)
{
builder.Connect(unrealNode.Exponent, unrealNode.Name, 1);
}
}
public override void CreateConnections(Material unrealNode, Material unrealMaterial, ShaderGraphBuilder builder)
{
builder.Connect(unrealNode.EmissiveColor, unrealNode.Name, UnlitMasterNode.ColorSlotId);
builder.Connect(unrealNode.OpacityMask, unrealNode.Name, UnlitMasterNode.AlphaSlotId);
if (unrealNode.Specular != null)
{
// FIXME: support specular or at least raise a warning?
// builder.Connect(unrealNode.Specular?.NodeName, unrealNode.Name, PBRMasterNode.SpecularSlotId, unrealNode.Specular);
}
}
public override void CreateConnections(MaterialExpressionDivide unrealNode, Material unrealMaterial, ShaderGraphBuilder builder)
{
if (unrealNode.A != null)
{
builder.Connect(unrealNode.A, unrealNode.Name, 0);
}
if (unrealNode.B != null)
{
builder.Connect(unrealNode.B, unrealNode.Name, 1);
}
}
public override void CreateConnections(MaterialExpressionClamp unrealNode, Material unrealMaterial, ShaderGraphBuilder builder)
{
builder.Connect(unrealNode.Input, unrealNode.Name, 0);
if (unrealNode.Min != null)
{
builder.Connect(unrealNode.Min, unrealNode.Name, 1);
}
if (unrealNode.Max != null)
{
builder.Connect(unrealNode.Max, unrealNode.Name, 2);
}
}
protected override AbstractMaterialNode CreateNodeForShaderInput(ShaderInput shaderInput, ShaderGraphBuilder builder, MaterialExpressionStaticSwitchParameter unrealNode)
{
var propertyNode = base.CreateNodeForShaderInput(shaderInput, builder, unrealNode);
var branchNode = builder.CreateNode <BranchNode>();
builder.PositionNodeOnGraph(propertyNode, unrealNode);
builder.Connect(propertyNode.GetSlotReference(0), branchNode.GetSlotReference(0));
return(branchNode);
}
protected override AbstractMaterialNode CreateNodeForShaderInput(ShaderInput shaderInput, ShaderGraphBuilder builder, MaterialExpressionTextureSampleParameter2D unrealNode)
{
var propertyNode = base.CreateNodeForShaderInput(shaderInput, builder, unrealNode);
var sampleNode = builder.CreateNode <SampleTexture2DNode>();
sampleNode.textureType = TextureType.Default;
builder.PositionNodeOnGraph(propertyNode, unrealNode);
builder.Connect(propertyNode.GetSlotReference(PropertyNode.OutputSlotId), sampleNode.GetSlotReference(SampleTexture2DNode.TextureInputId));
return(sampleNode);
}
public override void CreateConnections(MaterialExpressionFresnel unrealNode, Material unrealMaterial, ShaderGraphBuilder builder)
{
if (unrealNode.Normal != null)
{
builder.Connect(unrealNode.Normal, unrealNode.Name, 0);
}
if (unrealNode.BaseReflectFractionIn != null)
{
Debug.Log("FIXME: unhandled fresnel baseReflectFractionIn/baseReflectFraction");
}
if (unrealNode.ExponentIn != null)
{
Debug.Log("FIXME: unhandled fresnel exponentIn/exponent");
}
if (unrealNode.Power != null)
{
builder.Connect(unrealNode.Power, unrealNode.Name, 2);
}
}
public override void CreateConnections(MaterialExpressionMaterialFunctionCall unrealNode, Material unrealMaterial, ShaderGraphBuilder builder)
{
foreach (var functionInput in unrealNode.FunctionInputs)
{
var inputPropertyBag = ValueUtil.ParseAttributeList(functionInput.FindPropertyValue("Input"));
var expressionValue = ValueUtil.ParseExpressionReference(inputPropertyBag.FindPropertyValue("Expression"));
var resolvedFunctionInput = unrealMaterial.ResolveExpressionReference(expressionValue);
if (resolvedFunctionInput != null)
{
var slotId = GetConnectionIdSlotForFunctionInput(inputPropertyBag.FindPropertyValue("InputName"), resolvedFunctionInput);
var inputSlot = builder.FindSlot <MaterialSlot>(resolvedFunctionInput?.Name, unrealNode.Name, slotId, inputPropertyBag);
builder.Connect(resolvedFunctionInput?.Name, unrealNode.Name, slotId, inputPropertyBag);
}
}
}
public override void CreateConnections(Material unrealNode, Material unrealMaterial, ShaderGraphBuilder builder)
{
builder.Connect(unrealNode.BaseColor, unrealNode.Name, PBRMasterNode.AlbedoSlotId);
builder.Connect(unrealNode.Metallic, unrealNode.Name, PBRMasterNode.MetallicSlotId);
builder.Connect(unrealNode.Normal, unrealNode.Name, PBRMasterNode.NormalSlotId);
builder.Connect(unrealNode.OpacityMask, unrealNode.Name, PBRMasterNode.AlphaSlotId);
builder.Connect(unrealNode.Roughness, unrealNode.Name, PBRMasterNode.SmoothnessSlotId);
builder.Connect(unrealNode.EmissiveColor, unrealNode.Name, PBRMasterNode.EmissionSlotId);
if (unrealMaterial.Metallic != null && unrealMaterial.Specular != null)
{
Debug.Log("FIXME: material supports both metallic and specular but we don't");
}
if (unrealMaterial.Metallic == null && unrealNode.Specular != null)
{
builder.Connect(unrealNode.Specular, unrealNode.Name, PBRMasterNode.SpecularSlotId);
}
}
public override void CreateConnections(MaterialExpressionSine unrealNode, Material unrealMaterial, ShaderGraphBuilder builder)
{
builder.Connect(unrealNode.Input, unrealNode.Name, 0);
}
public override void CreateConnections(MaterialExpressionDesaturation unrealNode, Material unrealMaterial, ShaderGraphBuilder builder)
{
builder.Connect(unrealNode.Input, unrealNode.Name, 0);
builder.Connect(unrealNode.Fraction, unrealNode.Name, 1);
}
public override void CreateConnections(MaterialExpressionAppendVector unrealNode, Material unrealMaterial, ShaderGraphBuilder builder)
{
if (unrealNode.A != null)
{
var a = unrealMaterial.ResolveExpressionReference(
ValueUtil.ParseExpressionReference(unrealNode.A.FindPropertyValue("Expression"))
);
var aSlot = builder.FindSlot <MaterialSlot>(a?.Name, unrealNode.Name, 0, unrealNode.A);
if (aSlot.concreteValueType == ConcreteSlotValueType.Vector4 || aSlot.concreteValueType == ConcreteSlotValueType.Vector3)
{
builder.Connect(a?.Name, unrealNode.Name, 0, unrealNode.A);
builder.Connect(a?.Name, unrealNode.Name, 1, unrealNode.A);
builder.Connect(a?.Name, unrealNode.Name, 2, unrealNode.A);
}
else if (aSlot.concreteValueType == ConcreteSlotValueType.Vector2)
{
builder.Connect(a?.Name, unrealNode.Name, 0, unrealNode.A);
builder.Connect(a?.Name, unrealNode.Name, 1, unrealNode.A);
}
else if (aSlot.concreteValueType == ConcreteSlotValueType.Vector1)
{
builder.Connect(a?.Name, unrealNode.Name, 0, unrealNode.A);
}
else
{
throw new System.Exception("FIXME: unhandled vector type");
}
}
if (unrealNode.B != null)
{
var b = unrealMaterial.ResolveExpressionReference(
ValueUtil.ParseExpressionReference(unrealNode.B.FindPropertyValue("Expression"))
);
var bSlot = builder.FindSlot <MaterialSlot>(b?.Name, unrealNode.Name, 0, unrealNode.B);
if (bSlot.concreteValueType == ConcreteSlotValueType.Vector4 || bSlot.concreteValueType == ConcreteSlotValueType.Vector3)
{
builder.Connect(b?.Name, unrealNode.Name, 0, unrealNode.B);
builder.Connect(b?.Name, unrealNode.Name, 1, unrealNode.B);
builder.Connect(b?.Name, unrealNode.Name, 2, unrealNode.B);
}
else if (bSlot.concreteValueType == ConcreteSlotValueType.Vector2)
{
builder.Connect(b?.Name, unrealNode.Name, 1, unrealNode.B);
builder.Connect(b?.Name, unrealNode.Name, 2, unrealNode.B);
}
else if (bSlot.concreteValueType == ConcreteSlotValueType.Vector1)
{
builder.Connect(b?.Name, unrealNode.Name, 1, unrealNode.B);
}
else
{
throw new System.Exception("FIXME: unhandled vector type");
}
}
}
public override void CreateConnections(MaterialExpressionStaticSwitchParameter unrealNode, Material unrealMaterial, ShaderGraphBuilder builder)
{
builder.Connect(unrealNode.A, unrealNode.Name, 1);
builder.Connect(unrealNode.B, unrealNode.Name, 2);
}
public override void CreateConnections(MaterialExpressionTextureSampleParameter2D unrealNode, Material unrealMaterial, ShaderGraphBuilder builder)
{
builder.Connect(unrealNode.Coordinates, unrealNode.Name, SampleTexture2DNode.UVInput);
}
public override void CreateConnections(MaterialExpressionLinearInterpolate unrealNode, Material unrealMaterial, ShaderGraphBuilder builder)
{
builder.Connect(unrealNode.A, unrealNode.Name, 0);
builder.Connect(unrealNode.B, unrealNode.Name, 1);
builder.Connect(unrealNode.Alpha, unrealNode.Name, 2);
}
