public void GenerateNodeCode(ShaderStringBuilder sb, GenerationMode generationMode)
{
var inputValue = GetSlotValue(InputSlotId, generationMode);
var outputValue = GetSlotValue(OutputSlotId, generationMode);
sb.AppendLine("{0} {1};", FindOutputSlot <MaterialSlot>(OutputSlotId).concreteValueType.ToShaderString(), GetVariableNameForSlot(OutputSlotId));
if (!generationMode.IsPreview())
{
sb.TryAppendIndentation();
sb.Append("{0} _{1}_Flip = {0} ({2}",
FindInputSlot <MaterialSlot>(InputSlotId).concreteValueType.ToShaderString(),
GetVariableNameForNode(),
Convert.ToInt32(m_RedChannel));
if (channelCount > 1)
{
sb.Append(", {0}", Convert.ToInt32(m_GreenChannel));
}
if (channelCount > 2)
{
sb.Append(", {0}", Convert.ToInt32(m_BlueChannel));
}
if (channelCount > 3)
{
sb.Append(", {0}", Convert.ToInt32(m_AlphaChannel));
}
sb.Append(");");
sb.AppendNewLine();
}
sb.AppendLine("{0}({1}, _{2}_Flip, {3});", GetFunctionName(), inputValue, GetVariableNameForNode(), outputValue);
}
void AppendVtSample(ShaderStringBuilder sb, string propertiesName, string vtInputVariable, string infoVariable, int layerIndex, string outputVariableName)
{
sb.TryAppendIndentation();
sb.Append(outputVariableName); sb.Append(" = ");
sb.Append("SampleVTLayerWithTextureType(");
sb.Append(propertiesName); sb.Append(", ");
sb.Append(vtInputVariable); sb.Append(", ");
sb.Append(infoVariable); sb.Append(", ");
sb.Append(layerIndex.ToString()); sb.Append(");");
sb.AppendNewLine();
}
public void GenerateNodeCode(ShaderStringBuilder sb, GenerationMode generationMode)
{
var outputGraphPrecision = asset?.outputGraphPrecision ?? GraphPrecision.Single;
var outputPrecision = outputGraphPrecision.ToConcrete(concretePrecision);
if (asset == null || hasError)
{
var outputSlots = new List <MaterialSlot>();
GetOutputSlots(outputSlots);
foreach (var slot in outputSlots)
{
sb.AppendLine($"{slot.concreteValueType.ToShaderString(outputPrecision)} {GetVariableNameForSlot(slot.id)} = {slot.GetDefaultValue(GenerationMode.ForReals)};");
}
return;
}
var inputVariableName = $"_{GetVariableNameForNode()}";
GenerationUtils.GenerateSurfaceInputTransferCode(sb, asset.requirements, asset.inputStructName, inputVariableName);
// declare output variables
foreach (var outSlot in asset.outputs)
{
sb.AppendLine("{0} {1};", outSlot.concreteValueType.ToShaderString(outputPrecision), GetVariableNameForSlot(outSlot.id));
}
var arguments = new List <string>();
foreach (AbstractShaderProperty prop in asset.inputs)
{
// setup the property concrete precision (fallback to node concrete precision when it's switchable)
prop.SetupConcretePrecision(this.concretePrecision);
var inSlotId = m_PropertyIds[m_PropertyGuids.IndexOf(prop.guid.ToString())];
arguments.Add(GetSlotValue(inSlotId, generationMode, prop.concretePrecision));
if (prop.isConnectionTestable)
{
arguments.Add(IsSlotConnected(inSlotId) ? "true" : "false");
}
}
var dropdowns = asset.dropdowns;
foreach (var dropdown in dropdowns)
{
var name = GetDropdownEntryName(dropdown.referenceName);
if (dropdown.ContainsEntry(name))
{
arguments.Add(dropdown.IndexOfName(name).ToString());
}
else
{
arguments.Add(dropdown.value.ToString());
}
}
// pass surface inputs through
arguments.Add(inputVariableName);
foreach (var outSlot in asset.outputs)
{
arguments.Add(GetVariableNameForSlot(outSlot.id));
}
foreach (var feedbackSlot in asset.vtFeedbackVariables)
{
string feedbackVar = GetVariableNameForNode() + "_" + feedbackSlot;
sb.AppendLine("{0} {1};", ConcreteSlotValueType.Vector4.ToShaderString(ConcretePrecision.Single), feedbackVar);
arguments.Add(feedbackVar);
}
sb.TryAppendIndentation();
sb.Append(asset.functionName);
sb.Append("(");
bool firstArg = true;
foreach (var arg in arguments)
{
if (!firstArg)
{
sb.Append(", ");
}
firstArg = false;
sb.Append(arg);
}
sb.Append(");");
sb.AppendNewLine();
}
public void GenerateNodeCode(ShaderStringBuilder sb, GenerationMode generationMode)
{
bool success = false;
if (IsSlotConnected(VirtualTextureInputId))
{
var vtProperty = GetSlotProperty(VirtualTextureInputId) as VirtualTextureShaderProperty;
if (vtProperty != null)
{
var layerOutputVariables = new List <string>();
int layerCount = vtProperty.value.layers.Count;
for (int i = 0; i < layerCount; i++)
{
if (IsSlotConnected(OutputSlotIds[i]))
{
// declare output variables up front
string layerOutputVariable = GetVariableNameForSlot(OutputSlotIds[i]);
sb.AppendLine("$precision4 " + layerOutputVariable + ";");
layerOutputVariables.Add(layerOutputVariable);
}
}
if (layerOutputVariables.Count > 0)
{
// assign feedback variable
sb.TryAppendIndentation();
if (!noFeedback)
{
sb.Append("float4 ");
sb.Append(GetFeedbackVariableName());
sb.Append(" = ");
}
sb.Append(GetFunctionName(out var unused));
sb.Append("(");
sb.Append(GetSlotValue(UVInputId, generationMode));
switch (lodCalculation)
{
case LodCalculation.VtLevel_Lod:
case LodCalculation.VtLevel_Bias:
sb.Append(", ");
sb.Append((lodCalculation == LodCalculation.VtLevel_Lod) ? GetSlotValue(LODInputId, generationMode) : GetSlotValue(BiasInputId, generationMode));
break;
case LodCalculation.VtLevel_Derivatives:
sb.Append(", ");
sb.Append(GetSlotValue(DxInputId, generationMode));
sb.Append(", ");
sb.Append(GetSlotValue(DyInputId, generationMode));
break;
}
sb.Append(", ");
sb.Append(vtProperty.referenceName);
foreach (string layerOutputVariable in layerOutputVariables)
{
sb.Append(", ");
sb.Append(layerOutputVariable);
}
sb.Append(");");
sb.AppendNewLine();
success = true;
}
}
}
if (!success)
{
// set all outputs to zero
for (int i = 0; i < kMaxLayers; i++)
{
if (IsSlotConnected(OutputSlotIds[i]))
{
// declare output variables up front
string layerOutputVariable = GetVariableNameForSlot(OutputSlotIds[i]);
sb.AppendLine("$precision4 " + layerOutputVariable + " = 0;");
}
}
// TODO: should really just disable feedback in this case (need different feedback interface to do this)
sb.AppendLine("$precision4 " + GetFeedbackVariableName() + " = 1;");
}
}
public static void GetKeywordPermutationDeclarations(ShaderStringBuilder sb, List <List <KeyValuePair <ShaderKeyword, int> > > permutations)
{
if (permutations.Count == 0)
{
return;
}
for (int p = 0; p < permutations.Count; p++)
{
// ShaderStringBuilder.Append doesnt apply indentation
sb.TryAppendIndentation();
// Append correct if
bool isLast = false;
if (p == 0)
{
sb.Append("#if ");
}
else if (p == permutations.Count - 1)
{
sb.Append("#else");
isLast = true;
}
else
{
sb.Append("#elif ");
}
// Last permutation is always #else
if (!isLast)
{
// Track whether && is required
bool appendAnd = false;
// Iterate all keywords that are part of the permutation
for (int i = 0; i < permutations[p].Count; i++)
{
// When previous keyword was inserted subsequent requires &&
string and = appendAnd ? " && " : string.Empty;
switch (permutations[p][i].Key.keywordType)
{
case KeywordType.Enum:
{
sb.Append($"{and}defined({permutations[p][i].Key.referenceName}_{permutations[p][i].Key.entries[permutations[p][i].Value].referenceName})");
appendAnd = true;
break;
}
case KeywordType.Boolean:
{
// HLSL does not support a !value predicate
if (permutations[p][i].Value != 0)
{
continue;
}
sb.Append($"{and}defined({permutations[p][i].Key.referenceName})");
appendAnd = true;
break;
}
default:
throw new ArgumentOutOfRangeException();
}
}
}
sb.AppendNewLine();
// Define the matching permutation keyword
sb.IncreaseIndent();
sb.AppendLine($"#define KEYWORD_PERMUTATION_{p}");
sb.DecreaseIndent();
}
// End statement
sb.AppendLine("#endif");
}
