public string GetShader(GenerationMode mode, string outputName, out List<PropertyCollector.TextureInfo> configuredTextures, List<string> sourceAssetDependencyPaths = null)
{
var activeNodeList = ListPool<AbstractMaterialNode>.Get();
NodeUtils.DepthFirstCollectNodesFromNode(activeNodeList, this);
var shaderProperties = new PropertyCollector();
var abstractMaterialGraph = owner as GraphData;
if (abstractMaterialGraph != null)
abstractMaterialGraph.CollectShaderProperties(shaderProperties, mode);
foreach (var activeNode in activeNodeList.OfType<AbstractMaterialNode>())
activeNode.CollectShaderProperties(shaderProperties, mode);
var finalShader = new ShaderStringBuilder();
finalShader.AppendLine(@"Shader ""{0}""", outputName);
using (finalShader.BlockScope())
{
finalShader.AppendLine("Properties");
using (finalShader.BlockScope())
{
finalShader.AppendLine(shaderProperties.GetPropertiesBlock(0));
}
foreach (var subShader in m_SubShaders)
{
if (mode != GenerationMode.Preview || subShader.IsPipelineCompatible(GraphicsSettings.renderPipelineAsset))
finalShader.AppendLines(subShader.GetSubshader(this, mode, sourceAssetDependencyPaths));
}
finalShader.AppendLine(@"FallBack ""Hidden/InternalErrorShader""");
}
configuredTextures = shaderProperties.GetConfiguredTexutres();
return finalShader.ToString();
}
void BuildShader()
{
var activeNodeList = Graphing.ListPool <AbstractMaterialNode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(activeNodeList, m_OutputNode);
var shaderProperties = new PropertyCollector();
var shaderKeywords = new KeywordCollector();
m_GraphData.CollectShaderProperties(shaderProperties, m_Mode);
m_GraphData.CollectShaderKeywords(shaderKeywords, m_Mode);
if (m_GraphData.GetKeywordPermutationCount() > ShaderGraphPreferences.variantLimit)
{
m_GraphData.AddValidationError(m_OutputNode.guid, ShaderKeyword.kVariantLimitWarning, Rendering.ShaderCompilerMessageSeverity.Error);
m_ConfiguredTextures = shaderProperties.GetConfiguredTexutres();
m_Builder.AppendLines(ShaderGraphImporter.k_ErrorShader);
}
GetTargetImplementations();
foreach (var activeNode in activeNodeList.OfType <AbstractMaterialNode>())
{
activeNode.CollectShaderProperties(shaderProperties, m_Mode);
}
m_Builder.AppendLine(@"Shader ""{0}""", m_Name);
using (m_Builder.BlockScope())
{
GenerationUtils.GeneratePropertiesBlock(m_Builder, shaderProperties, shaderKeywords, m_Mode);
for (int i = 0; i < m_TargetImplementations.Length; i++)
{
TargetSetupContext context = new TargetSetupContext();
context.SetMasterNode(m_OutputNode as IMasterNode);
// Instead of setup target, we can also just do get context
m_TargetImplementations[i].SetupTarget(ref context);
GetAssetDependencyPaths(context);
GenerateSubShader(i, context.descriptor);
}
// Either grab the pipeline default for the active node or the user override
if (m_OutputNode is ICanChangeShaderGUI canChangeShaderGui)
{
string customEditor = GenerationUtils.FinalCustomEditorString(canChangeShaderGui);
if (customEditor != null)
{
m_Builder.AppendLine("CustomEditor \"" + customEditor + "\"");
}
}
m_Builder.AppendLine(@"FallBack ""Hidden/Shader Graph/FallbackError""");
}
m_ConfiguredTextures = shaderProperties.GetConfiguredTexutres();
}
private static List <AbstractMaterialNode> GetAntecedents(BlockNode blockNode)
{
if (blockNode != null && blockNode.isCustomBlock && blockNode.isActive && blockNode.GetInputNodeFromSlot(0) != null)
{
List <AbstractMaterialNode> results = new List <AbstractMaterialNode>();
NodeUtils.DepthFirstCollectNodesFromNode(results, blockNode, NodeUtils.IncludeSelf.Exclude);
return(results != null && results.Count() == 0 ? null : results);
}
return(null);
}
public virtual void GenerateNodeFunction(FunctionRegistry registry, GraphContext graphContext, GenerationMode generationMode)
{
if (subGraphAsset == null || referencedGraph == null)
return;
List<AbstractMaterialNode> nodes = new List<AbstractMaterialNode>();
NodeUtils.DepthFirstCollectNodesFromNode(nodes, referencedGraph.outputNode);
foreach (var node in nodes.OfType<AbstractMaterialNode>())
{
node.ValidateNode();
if (node is IGeneratesFunction)
(node as IGeneratesFunction).GenerateNodeFunction(registry, graphContext, generationMode);
}
string functionName = SubGraphFunctionName(graphContext);
ShaderGraphRequirements reqs = ShaderGraphRequirements.FromNodes(new List<AbstractMaterialNode> {this});
registry.ProvideFunction(functionName, s =>
{
s.AppendLine("// Subgraph function");
// Generate arguments... first INPUTS
var arguments = new List<string>();
foreach (var prop in referencedGraph.properties)
arguments.Add(string.Format("{0}", prop.GetPropertyAsArgumentString()));
// now pass surface inputs
arguments.Add(string.Format("{0} IN", graphContext.graphInputStructName));
// Now generate outputs
foreach (var slot in outputNode.graphOutputs)
arguments.Add(string.Format("out {0} {1}", slot.concreteValueType.ToString(referencedGraph.outputNode.precision), slot.shaderOutputName));
// Create the function protoype from the arguments
s.AppendLine("void {0}({1})"
, functionName
, arguments.Aggregate((current, next) => string.Format("{0}, {1}", current, next)));
// now generate the function
using (s.BlockScope())
{
// Just grab the body from the active nodes
var bodyGenerator = new ShaderGenerator();
foreach (var node in nodes.OfType<AbstractMaterialNode>())
{
if (node is IGeneratesBodyCode)
(node as IGeneratesBodyCode).GenerateNodeCode(bodyGenerator, graphContext, generationMode);
}
outputNode.RemapOutputs(bodyGenerator, generationMode);
s.Append(bodyGenerator.GetShaderString(1));
}
});
}
static void GetUpstreamNodesForShaderPass(AbstractMaterialNode masterNode, ShaderPass pass, out List <AbstractMaterialNode> vertexNodes, out List <AbstractMaterialNode> pixelNodes)
{
// Traverse Graph Data
vertexNodes = Graphing.ListPool <AbstractMaterialNode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(vertexNodes, masterNode, NodeUtils.IncludeSelf.Include, pass.vertexPorts);
pixelNodes = Graphing.ListPool <AbstractMaterialNode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(pixelNodes, masterNode, NodeUtils.IncludeSelf.Include, pass.pixelPorts);
}
public override void CollectPreviewMaterialProperties(List<PreviewProperty> properties)
{
base.CollectPreviewMaterialProperties(properties);
if (referencedGraph == null)
return;
List<PreviewProperty> props = new List<PreviewProperty>();
List<AbstractMaterialNode> nodes = new List<AbstractMaterialNode>();
NodeUtils.DepthFirstCollectNodesFromNode(nodes, referencedGraph.outputNode);
foreach (var node in nodes)
node.CollectPreviewMaterialProperties(props);
properties.AddRange(props);
}
public override string GetShader(GenerationMode mode, string outputName, out List <PropertyCollector.TextureInfo> configuredTextures)
{
var activeNodeList = ListPool <INode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(activeNodeList, this);
var shaderProperties = new PropertyCollector();
var abstractMaterialGraph = owner as AbstractMaterialGraph;
if (abstractMaterialGraph != null)
{
abstractMaterialGraph.CollectShaderProperties(shaderProperties, mode);
}
foreach (var activeNode in activeNodeList.OfType <AbstractMaterialNode>())
{
activeNode.CollectShaderProperties(shaderProperties, mode);
}
var finalShader = new ShaderGenerator();
finalShader.AddShaderChunk(string.Format(@"Shader ""{0}""", outputName), false);
finalShader.AddShaderChunk("{", false);
finalShader.Indent();
finalShader.AddShaderChunk("Properties", false);
finalShader.AddShaderChunk("{", false);
finalShader.Indent();
finalShader.AddShaderChunk(shaderProperties.GetPropertiesBlock(2), false);
finalShader.Deindent();
finalShader.AddShaderChunk("}", false);
var lwSub = new LightWeightUnlitSubShader();
finalShader.AddShaderChunk(lwSub.GetSubshader(this, mode), true);
//Disable HD for now as there is no mapping
// for many inputs like worldSpaceNormal and similar
/*var hdSub = new HDUnlitSubShader();
* finalShader.AddShaderChunk(hdSub.GetSubshader(this, mode), true);*/
finalShader.Deindent();
finalShader.AddShaderChunk("}", false);
configuredTextures = shaderProperties.GetConfiguredTexutres();
return(finalShader.GetShaderString(0));
}
public string GetShader(GenerationMode mode, string outputName, out List <PropertyCollector.TextureInfo> configuredTextures, List <string> sourceAssetDependencyPaths = null)
{
var activeNodeList = ListPool <AbstractMaterialNode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(activeNodeList, this);
var shaderProperties = new PropertyCollector();
var shaderKeywords = new KeywordCollector();
if (owner != null)
{
owner.CollectShaderProperties(shaderProperties, mode);
owner.CollectShaderKeywords(shaderKeywords, mode);
}
if (owner.GetKeywordPermutationCount() > ShaderGraphPreferences.variantLimit)
{
owner.AddValidationError(tempId, ShaderKeyword.kVariantLimitWarning, Rendering.ShaderCompilerMessageSeverity.Error);
configuredTextures = shaderProperties.GetConfiguredTexutres();
return(ShaderGraphImporter.k_ErrorShader);
}
foreach (var activeNode in activeNodeList.OfType <AbstractMaterialNode>())
{
activeNode.CollectShaderProperties(shaderProperties, mode);
}
var finalShader = new ShaderStringBuilder();
finalShader.AppendLine(@"Shader ""{0}""", outputName);
using (finalShader.BlockScope())
{
GraphUtil.GeneratePropertiesBlock(finalShader, shaderProperties, shaderKeywords, mode);
foreach (var subShader in m_SubShaders)
{
if (mode != GenerationMode.Preview || subShader.IsPipelineCompatible(GraphicsSettings.renderPipelineAsset))
{
finalShader.AppendLines(subShader.GetSubshader(this, mode, sourceAssetDependencyPaths));
}
}
finalShader.AppendLine(@"FallBack ""Hidden/InternalErrorShader""");
}
configuredTextures = shaderProperties.GetConfiguredTexutres();
return(finalShader.ToString());
}
public override string GetShader(GenerationMode mode, string outputName, out List <PropertyCollector.TextureInfo> configuredTextures)
{
var activeNodeList = ListPool <INode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(activeNodeList, this);
var shaderProperties = new PropertyCollector();
var abstractMaterialGraph = owner as AbstractMaterialGraph;
if (abstractMaterialGraph != null)
{
abstractMaterialGraph.CollectShaderProperties(shaderProperties, mode);
}
foreach (var activeNode in activeNodeList.OfType <AbstractMaterialNode>())
{
activeNode.CollectShaderProperties(shaderProperties, mode);
}
var finalShader = new ShaderGenerator();
finalShader.AddShaderChunk(string.Format(@"Shader ""{0}""", outputName), false);
finalShader.AddShaderChunk("{", false);
finalShader.Indent();
finalShader.AddShaderChunk("Properties", false);
finalShader.AddShaderChunk("{", false);
finalShader.Indent();
finalShader.AddShaderChunk(shaderProperties.GetPropertiesBlock(2), false);
finalShader.Deindent();
finalShader.AddShaderChunk("}", false);
var lwSub = new LightWeightPBRSubShader();
foreach (var subshader in lwSub.GetSubshader(this, mode))
{
finalShader.AddShaderChunk(subshader, true);
}
finalShader.Deindent();
finalShader.AddShaderChunk("}", false);
configuredTextures = shaderProperties.GetConfiguredTexutres();
return(finalShader.GetShaderString(0));
}
public void TestCanConnectAndTraverseThreeNodesOnBaseMaterialGraph()
{
var graph = new GraphData();
var outputNode = new TestableNode();
graph.AddNode(outputNode);
var middleNode = new TestableNode();
graph.AddNode(middleNode);
var inputNode = new TestableNode();
graph.AddNode(inputNode);
Assert.AreEqual(3, graph.GetNodes <AbstractMaterialNode>().Count());
graph.Connect(outputNode.GetSlotReference(TestableNode.Output0), middleNode.GetSlotReference(TestableNode.Input0));
Assert.AreEqual(1, graph.edges.Count());
graph.Connect(middleNode.GetSlotReference(TestableNode.Output0), inputNode.GetSlotReference(TestableNode.Input0));
Assert.AreEqual(2, graph.edges.Count());
var edgesOnMiddleNode = NodeUtils.GetAllEdges(middleNode);
Assert.AreEqual(2, edgesOnMiddleNode.Count());
outputNode.SetOverrideActiveState(AbstractMaterialNode.ActiveState.ExplicitActive);
middleNode.SetOverrideActiveState(AbstractMaterialNode.ActiveState.ExplicitActive);
inputNode.SetOverrideActiveState(AbstractMaterialNode.ActiveState.ExplicitActive);
List <AbstractMaterialNode> result = new List <AbstractMaterialNode>();
NodeUtils.DepthFirstCollectNodesFromNode(result, inputNode);
Assert.AreEqual(3, result.Count);
result.Clear();
NodeUtils.DepthFirstCollectNodesFromNode(result, inputNode, NodeUtils.IncludeSelf.Exclude);
Assert.AreEqual(2, result.Count);
result.Clear();
NodeUtils.DepthFirstCollectNodesFromNode(result, null);
Assert.AreEqual(0, result.Count);
}
public void CollectShaderProperties(PropertyCollector collector, GenerationMode generationMode)
{
if (!isSubGraph || generationMode == GenerationMode.Preview)
{
foreach (var prop in properties)
{
collector.AddShaderProperty(prop);
}
}
if (isSubGraph)
{
List <AbstractMaterialNode> activeNodes = new List <AbstractMaterialNode>();
NodeUtils.DepthFirstCollectNodesFromNode(activeNodes, outputNode);
foreach (var node in activeNodes)
{
node.CollectShaderProperties(collector, generationMode);
}
}
}
public string GetShader(GenerationMode mode, string outputName, out List <PropertyCollector.TextureInfo> configuredTextures)
{
var activeNodeList = ListPool <INode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(activeNodeList, this);
var shaderProperties = new PropertyCollector();
var abstractMaterialGraph = owner as AbstractMaterialGraph;
if (abstractMaterialGraph != null)
{
abstractMaterialGraph.CollectShaderProperties(shaderProperties, mode);
}
foreach (var activeNode in activeNodeList.OfType <AbstractMaterialNode>())
{
activeNode.CollectShaderProperties(shaderProperties, mode);
}
var finalShader = new ShaderStringBuilder();
finalShader.AppendLine(@"Shader ""{0}""", outputName);
using (finalShader.BlockScope())
{
finalShader.AppendLine("Properties");
using (finalShader.BlockScope())
{
finalShader.AppendLine(shaderProperties.GetPropertiesBlock(0));
}
foreach (var subShader in m_SubShaders)
{
finalShader.AppendLines(subShader.GetSubshader(this, mode));
}
finalShader.AppendLine(@"FallBack ""Hidden/InternalErrorShader""");
}
configuredTextures = shaderProperties.GetConfiguredTexutres();
return(finalShader.ToString());
}
static string GetShaderPassFromTemplate(string template, UnlitMasterNode masterNode, Pass pass, GenerationMode mode, SurfaceMaterialOptions materialOptions)
{
// ----------------------------------------------------- //
// SETUP //
// ----------------------------------------------------- //
// -------------------------------------
// String builders
var shaderProperties = new PropertyCollector();
var shaderPropertyUniforms = new ShaderStringBuilder(1);
var functionBuilder = new ShaderStringBuilder(1);
var functionRegistry = new FunctionRegistry(functionBuilder);
var defines = new ShaderStringBuilder(1);
var graph = new ShaderStringBuilder(0);
var vertexDescriptionInputStruct = new ShaderStringBuilder(1);
var vertexDescriptionStruct = new ShaderStringBuilder(1);
var vertexDescriptionFunction = new ShaderStringBuilder(1);
var surfaceDescriptionInputStruct = new ShaderStringBuilder(1);
var surfaceDescriptionStruct = new ShaderStringBuilder(1);
var surfaceDescriptionFunction = new ShaderStringBuilder(1);
var vertexInputStruct = new ShaderStringBuilder(1);
var vertexOutputStruct = new ShaderStringBuilder(2);
var vertexShader = new ShaderStringBuilder(2);
var vertexShaderDescriptionInputs = new ShaderStringBuilder(2);
var vertexShaderOutputs = new ShaderStringBuilder(2);
var pixelShader = new ShaderStringBuilder(2);
var pixelShaderSurfaceInputs = new ShaderStringBuilder(2);
var pixelShaderSurfaceRemap = new ShaderStringBuilder(2);
// -------------------------------------
// Get Slot and Node lists per stage
var vertexSlots = pass.VertexShaderSlots.Select(masterNode.FindSlot <MaterialSlot>).ToList();
var vertexNodes = ListPool <AbstractMaterialNode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(vertexNodes, masterNode, NodeUtils.IncludeSelf.Include, pass.VertexShaderSlots);
var pixelSlots = pass.PixelShaderSlots.Select(masterNode.FindSlot <MaterialSlot>).ToList();
var pixelNodes = ListPool <AbstractMaterialNode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(pixelNodes, masterNode, NodeUtils.IncludeSelf.Include, pass.PixelShaderSlots);
// -------------------------------------
// Get Requirements
var vertexRequirements = ShaderGraphRequirements.FromNodes(vertexNodes, ShaderStageCapability.Vertex, false);
var pixelRequirements = ShaderGraphRequirements.FromNodes(pixelNodes, ShaderStageCapability.Fragment);
var graphRequirements = pixelRequirements.Union(vertexRequirements);
var surfaceRequirements = ShaderGraphRequirements.FromNodes(pixelNodes, ShaderStageCapability.Fragment, false);
var modelRequiements = ShaderGraphRequirements.none;
modelRequiements.requiresNormal |= k_PixelCoordinateSpace;
modelRequiements.requiresTangent |= k_PixelCoordinateSpace;
modelRequiements.requiresBitangent |= k_PixelCoordinateSpace;
modelRequiements.requiresPosition |= k_PixelCoordinateSpace;
modelRequiements.requiresViewDir |= k_PixelCoordinateSpace;
modelRequiements.requiresMeshUVs.Add(UVChannel.UV1);
// ----------------------------------------------------- //
// START SHADER GENERATION //
// ----------------------------------------------------- //
// -------------------------------------
// Calculate material options
var blendingBuilder = new ShaderStringBuilder(1);
var cullingBuilder = new ShaderStringBuilder(1);
var zTestBuilder = new ShaderStringBuilder(1);
var zWriteBuilder = new ShaderStringBuilder(1);
materialOptions.GetBlend(blendingBuilder);
materialOptions.GetCull(cullingBuilder);
materialOptions.GetDepthTest(zTestBuilder);
materialOptions.GetDepthWrite(zWriteBuilder);
// -------------------------------------
// Generate defines
if (masterNode.IsSlotConnected(UnlitMasterNode.AlphaThresholdSlotId))
{
defines.AppendLine("#define _AlphaClip 1");
}
if (masterNode.surfaceType == SurfaceType.Transparent && masterNode.alphaMode == AlphaMode.Premultiply)
{
defines.AppendLine("#define _ALPHAPREMULTIPLY_ON 1");
}
if (graphRequirements.requiresDepthTexture)
{
defines.AppendLine("#define REQUIRE_DEPTH_TEXTURE");
}
if (graphRequirements.requiresCameraOpaqueTexture)
{
defines.AppendLine("#define REQUIRE_OPAQUE_TEXTURE");
}
// ----------------------------------------------------- //
// START VERTEX DESCRIPTION //
// ----------------------------------------------------- //
// -------------------------------------
// Generate Input structure for Vertex Description function
// TODO - Vertex Description Input requirements are needed to exclude intermediate translation spaces
vertexDescriptionInputStruct.AppendLine("struct VertexDescriptionInputs");
using (vertexDescriptionInputStruct.BlockSemicolonScope())
{
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(vertexRequirements.requiresNormal, InterpolatorType.Normal, vertexDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(vertexRequirements.requiresTangent, InterpolatorType.Tangent, vertexDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(vertexRequirements.requiresBitangent, InterpolatorType.BiTangent, vertexDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(vertexRequirements.requiresViewDir, InterpolatorType.ViewDirection, vertexDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(vertexRequirements.requiresPosition, InterpolatorType.Position, vertexDescriptionInputStruct);
if (vertexRequirements.requiresVertexColor)
{
vertexDescriptionInputStruct.AppendLine("float4 {0};", ShaderGeneratorNames.VertexColor);
}
if (vertexRequirements.requiresScreenPosition)
{
vertexDescriptionInputStruct.AppendLine("float4 {0};", ShaderGeneratorNames.ScreenPosition);
}
foreach (var channel in vertexRequirements.requiresMeshUVs.Distinct())
{
vertexDescriptionInputStruct.AppendLine("half4 {0};", channel.GetUVName());
}
if (vertexRequirements.requiresTime)
{
vertexDescriptionInputStruct.AppendLine("float3 {0};", ShaderGeneratorNames.TimeParameters);
}
}
// -------------------------------------
// Generate Output structure for Vertex Description function
GraphUtil.GenerateVertexDescriptionStruct(vertexDescriptionStruct, vertexSlots);
// -------------------------------------
// Generate Vertex Description function
GraphUtil.GenerateVertexDescriptionFunction(
masterNode.owner as GraphData,
vertexDescriptionFunction,
functionRegistry,
shaderProperties,
mode,
vertexNodes,
vertexSlots);
// ----------------------------------------------------- //
// START SURFACE DESCRIPTION //
// ----------------------------------------------------- //
// -------------------------------------
// Generate Input structure for Surface Description function
// Surface Description Input requirements are needed to exclude intermediate translation spaces
surfaceDescriptionInputStruct.AppendLine("struct SurfaceDescriptionInputs");
using (surfaceDescriptionInputStruct.BlockSemicolonScope())
{
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(surfaceRequirements.requiresNormal, InterpolatorType.Normal, surfaceDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(surfaceRequirements.requiresTangent, InterpolatorType.Tangent, surfaceDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(surfaceRequirements.requiresBitangent, InterpolatorType.BiTangent, surfaceDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(surfaceRequirements.requiresViewDir, InterpolatorType.ViewDirection, surfaceDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(surfaceRequirements.requiresPosition, InterpolatorType.Position, surfaceDescriptionInputStruct);
if (surfaceRequirements.requiresVertexColor)
{
surfaceDescriptionInputStruct.AppendLine("float4 {0};", ShaderGeneratorNames.VertexColor);
}
if (surfaceRequirements.requiresScreenPosition)
{
surfaceDescriptionInputStruct.AppendLine("float4 {0};", ShaderGeneratorNames.ScreenPosition);
}
if (surfaceRequirements.requiresFaceSign)
{
surfaceDescriptionInputStruct.AppendLine("float {0};", ShaderGeneratorNames.FaceSign);
}
foreach (var channel in surfaceRequirements.requiresMeshUVs.Distinct())
{
surfaceDescriptionInputStruct.AppendLine("half4 {0};", channel.GetUVName());
}
if (surfaceRequirements.requiresTime)
{
surfaceDescriptionInputStruct.AppendLine("float3 {0};", ShaderGeneratorNames.TimeParameters);
}
}
// -------------------------------------
// Generate Output structure for Surface Description function
GraphUtil.GenerateSurfaceDescriptionStruct(surfaceDescriptionStruct, pixelSlots);
// -------------------------------------
// Generate Surface Description function
GraphUtil.GenerateSurfaceDescriptionFunction(
pixelNodes,
masterNode,
masterNode.owner as GraphData,
surfaceDescriptionFunction,
functionRegistry,
shaderProperties,
pixelRequirements,
mode,
"PopulateSurfaceData",
"SurfaceDescription",
null,
pixelSlots);
// ----------------------------------------------------- //
// GENERATE VERTEX > PIXEL PIPELINE //
// ----------------------------------------------------- //
// -------------------------------------
// Property uniforms
shaderProperties.GetPropertiesDeclaration(shaderPropertyUniforms, mode, masterNode.owner.concretePrecision);
// -------------------------------------
// Generate Input structure for Vertex shader
GraphUtil.GenerateApplicationVertexInputs(vertexRequirements.Union(pixelRequirements.Union(modelRequiements)), vertexInputStruct);
// -------------------------------------
// Generate standard transformations
// This method ensures all required transform data is available in vertex and pixel stages
ShaderGenerator.GenerateStandardTransforms(
3,
10,
vertexOutputStruct,
vertexShader,
vertexShaderDescriptionInputs,
vertexShaderOutputs,
pixelShader,
pixelShaderSurfaceInputs,
pixelRequirements,
surfaceRequirements,
modelRequiements,
vertexRequirements,
CoordinateSpace.World);
// -------------------------------------
// Generate pixel shader surface remap
foreach (var slot in pixelSlots)
{
pixelShaderSurfaceRemap.AppendLine("{0} = surf.{0};", slot.shaderOutputName);
}
// -------------------------------------
// Extra pixel shader work
var faceSign = new ShaderStringBuilder();
if (pixelRequirements.requiresFaceSign)
{
faceSign.AppendLine(", half FaceSign : VFACE");
}
// ----------------------------------------------------- //
// FINALIZE //
// ----------------------------------------------------- //
// -------------------------------------
// Combine Graph sections
graph.AppendLines(shaderPropertyUniforms.ToString());
graph.AppendLine(vertexDescriptionInputStruct.ToString());
graph.AppendLine(surfaceDescriptionInputStruct.ToString());
graph.AppendLine(functionBuilder.ToString());
graph.AppendLine(vertexDescriptionStruct.ToString());
graph.AppendLine(vertexDescriptionFunction.ToString());
graph.AppendLine(surfaceDescriptionStruct.ToString());
graph.AppendLine(surfaceDescriptionFunction.ToString());
graph.AppendLine(vertexInputStruct.ToString());
// -------------------------------------
// Generate final subshader
var resultPass = template.Replace("${Tags}", string.Empty);
resultPass = resultPass.Replace("${Blending}", blendingBuilder.ToString());
resultPass = resultPass.Replace("${Culling}", cullingBuilder.ToString());
resultPass = resultPass.Replace("${ZTest}", zTestBuilder.ToString());
resultPass = resultPass.Replace("${ZWrite}", zWriteBuilder.ToString());
resultPass = resultPass.Replace("${Defines}", defines.ToString());
resultPass = resultPass.Replace("${Graph}", graph.ToString());
resultPass = resultPass.Replace("${VertexOutputStruct}", vertexOutputStruct.ToString());
resultPass = resultPass.Replace("${VertexShader}", vertexShader.ToString());
resultPass = resultPass.Replace("${VertexShaderDescriptionInputs}", vertexShaderDescriptionInputs.ToString());
resultPass = resultPass.Replace("${VertexShaderOutputs}", vertexShaderOutputs.ToString());
resultPass = resultPass.Replace("${FaceSign}", faceSign.ToString());
resultPass = resultPass.Replace("${PixelShader}", pixelShader.ToString());
resultPass = resultPass.Replace("${PixelShaderSurfaceInputs}", pixelShaderSurfaceInputs.ToString());
resultPass = resultPass.Replace("${PixelShaderSurfaceRemap}", pixelShaderSurfaceRemap.ToString());
return(resultPass);
}
static string GetExtraPassesFromTemplate(string template, UnlitMasterNode masterNode, Pass pass, GenerationMode mode, SurfaceMaterialOptions materialOptions)
{
// ----------------------------------------------------- //
// SETUP //
// ----------------------------------------------------- //
// -------------------------------------
// String builders
var dummyBuilder = new ShaderStringBuilder(0);
var shaderProperties = new PropertyCollector();
var functionBuilder = new ShaderStringBuilder(1);
var functionRegistry = new FunctionRegistry(functionBuilder);
var defines = new ShaderStringBuilder(2);
var graph = new ShaderStringBuilder(0);
var vertexDescriptionInputStruct = new ShaderStringBuilder(1);
var vertexDescriptionStruct = new ShaderStringBuilder(1);
var vertexDescriptionFunction = new ShaderStringBuilder(1);
var vertexInputStruct = new ShaderStringBuilder(1);
var vertexShader = new ShaderStringBuilder(2);
var vertexDescriptionInputs = new ShaderStringBuilder(2);
// -------------------------------------
// Get Slot and Node lists per stage
var vertexSlots = pass.VertexShaderSlots.Select(masterNode.FindSlot <MaterialSlot>).ToList();
var vertexNodes = ListPool <AbstractMaterialNode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(vertexNodes, masterNode, NodeUtils.IncludeSelf.Include, pass.VertexShaderSlots);
// -------------------------------------
// Get requirements
var vertexRequirements = ShaderGraphRequirements.FromNodes(vertexNodes, ShaderStageCapability.Vertex, false);
var modelRequiements = ShaderGraphRequirements.none;
modelRequiements.requiresNormal |= m_VertexCoordinateSpace;
modelRequiements.requiresPosition |= m_VertexCoordinateSpace;
modelRequiements.requiresMeshUVs.Add(UVChannel.UV1);
// ----------------------------------------------------- //
// START SHADER GENERATION //
// ----------------------------------------------------- //
// -------------------------------------
// Calculate material options
var cullingBuilder = new ShaderStringBuilder(1);
materialOptions.GetCull(cullingBuilder);
// -------------------------------------
// Generate defines
if (masterNode.IsSlotConnected(PBRMasterNode.AlphaThresholdSlotId))
{
defines.AppendLine("#define _AlphaClip 1");
}
// ----------------------------------------------------- //
// START VERTEX DESCRIPTION //
// ----------------------------------------------------- //
// -------------------------------------
// Generate Input structure for Vertex Description function
// TODO - Vertex Description Input requirements are needed to exclude intermediate translation spaces
vertexDescriptionInputStruct.AppendLine("struct VertexDescriptionInputs");
using (vertexDescriptionInputStruct.BlockSemicolonScope())
{
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(vertexRequirements.requiresNormal, InterpolatorType.Normal, vertexDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(vertexRequirements.requiresTangent, InterpolatorType.Tangent, vertexDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(vertexRequirements.requiresBitangent, InterpolatorType.BiTangent, vertexDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(vertexRequirements.requiresViewDir, InterpolatorType.ViewDirection, vertexDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(vertexRequirements.requiresPosition, InterpolatorType.Position, vertexDescriptionInputStruct);
if (vertexRequirements.requiresVertexColor)
{
vertexDescriptionInputStruct.AppendLine("float4 {0};", ShaderGeneratorNames.VertexColor);
}
if (vertexRequirements.requiresScreenPosition)
{
vertexDescriptionInputStruct.AppendLine("float4 {0};", ShaderGeneratorNames.ScreenPosition);
}
foreach (var channel in vertexRequirements.requiresMeshUVs.Distinct())
{
vertexDescriptionInputStruct.AppendLine("half4 {0};", channel.GetUVName());
}
}
// -------------------------------------
// Generate Output structure for Vertex Description function
GraphUtil.GenerateVertexDescriptionStruct(vertexDescriptionStruct, vertexSlots);
// -------------------------------------
// Generate Vertex Description function
GraphUtil.GenerateVertexDescriptionFunction(
masterNode.owner as AbstractMaterialGraph,
vertexDescriptionFunction,
functionRegistry,
shaderProperties,
mode,
vertexNodes,
vertexSlots);
// ----------------------------------------------------- //
// GENERATE VERTEX > PIXEL PIPELINE //
// ----------------------------------------------------- //
// -------------------------------------
// Generate Input structure for Vertex shader
GraphUtil.GenerateApplicationVertexInputs(vertexRequirements.Union(modelRequiements), vertexInputStruct);
// -------------------------------------
// Generate standard transformations
// This method ensures all required transform data is available in vertex and pixel stages
ShaderGenerator.GenerateStandardTransforms(
3,
10,
dummyBuilder,
vertexShader,
vertexDescriptionInputs,
dummyBuilder,
dummyBuilder,
dummyBuilder,
ShaderGraphRequirements.none,
ShaderGraphRequirements.none,
modelRequiements,
vertexRequirements,
CoordinateSpace.World);
// ----------------------------------------------------- //
// FINALIZE //
// ----------------------------------------------------- //
// -------------------------------------
// Combine Graph sections
graph.AppendLine(shaderProperties.GetPropertiesDeclaration(1));
graph.AppendLine(vertexDescriptionInputStruct.ToString());
graph.AppendLine(functionBuilder.ToString());
graph.AppendLine(vertexDescriptionStruct.ToString());
graph.AppendLine(vertexDescriptionFunction.ToString());
graph.AppendLine(vertexInputStruct.ToString());
// -------------------------------------
// Generate final subshader
var resultPass = template.Replace("${Culling}", cullingBuilder.ToString());
resultPass = resultPass.Replace("${Defines}", defines.ToString());
resultPass = resultPass.Replace("${Graph}", graph.ToString());
resultPass = resultPass.Replace("${VertexShader}", vertexShader.ToString());
resultPass = resultPass.Replace("${VertexShaderDescriptionInputs}", vertexDescriptionInputs.ToString());
return(resultPass);
}
// TODO: Fix this
static ShaderGraphVfxAsset GenerateVfxShaderGraphAsset(GraphData graph)
{
var target = graph.activeTargets.FirstOrDefault(x => x is VFXTarget) as VFXTarget;
if (target == null)
{
return(null);
}
var nl = Environment.NewLine;
var indent = new string(' ', 4);
var asset = ScriptableObject.CreateInstance <ShaderGraphVfxAsset>();
var result = asset.compilationResult = new GraphCompilationResult();
var mode = GenerationMode.ForReals;
asset.lit = target.lit;
asset.alphaClipping = target.alphaTest;
var assetGuid = graph.assetGuid;
var assetPath = AssetDatabase.GUIDToAssetPath(assetGuid);
var hlslName = NodeUtils.GetHLSLSafeName(Path.GetFileNameWithoutExtension(assetPath));
var ports = new List <MaterialSlot>();
var nodes = new List <AbstractMaterialNode>();
foreach (var vertexBlock in graph.vertexContext.blocks)
{
vertexBlock.value.GetInputSlots(ports);
NodeUtils.DepthFirstCollectNodesFromNode(nodes, vertexBlock);
}
foreach (var fragmentBlock in graph.fragmentContext.blocks)
{
fragmentBlock.value.GetInputSlots(ports);
NodeUtils.DepthFirstCollectNodesFromNode(nodes, fragmentBlock);
}
//Remove inactive blocks from generation
{
var tmpCtx = new TargetActiveBlockContext(new List <BlockFieldDescriptor>(), null);
target.GetActiveBlocks(ref tmpCtx);
ports.RemoveAll(materialSlot =>
{
return(!tmpCtx.activeBlocks.Any(o => materialSlot.RawDisplayName() == o.displayName));
});
}
var bodySb = new ShaderStringBuilder(1);
var registry = new FunctionRegistry(new ShaderStringBuilder(), true);
foreach (var properties in graph.properties)
{
properties.ValidateConcretePrecision(graph.concretePrecision);
}
foreach (var node in nodes)
{
if (node is IGeneratesBodyCode bodyGenerator)
{
bodySb.currentNode = node;
bodyGenerator.GenerateNodeCode(bodySb, mode);
bodySb.ReplaceInCurrentMapping(PrecisionUtil.Token, node.concretePrecision.ToShaderString());
}
if (node is IGeneratesFunction generatesFunction)
{
registry.builder.currentNode = node;
generatesFunction.GenerateNodeFunction(registry, mode);
}
}
bodySb.currentNode = null;
var portNodeSets = new HashSet <AbstractMaterialNode> [ports.Count];
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
var port = ports[portIndex];
var nodeSet = new HashSet <AbstractMaterialNode>();
NodeUtils.CollectNodeSet(nodeSet, port);
portNodeSets[portIndex] = nodeSet;
}
var portPropertySets = new HashSet <string> [ports.Count];
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
portPropertySets[portIndex] = new HashSet <string>();
}
foreach (var node in nodes)
{
if (!(node is PropertyNode propertyNode))
{
continue;
}
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
var portNodeSet = portNodeSets[portIndex];
if (portNodeSet.Contains(node))
{
portPropertySets[portIndex].Add(propertyNode.property.objectId);
}
}
}
var shaderProperties = new PropertyCollector();
foreach (var node in nodes)
{
node.CollectShaderProperties(shaderProperties, GenerationMode.ForReals);
}
asset.SetTextureInfos(shaderProperties.GetConfiguredTexutres());
var codeSnippets = new List <string>();
var portCodeIndices = new List <int> [ports.Count];
var sharedCodeIndices = new List <int>();
for (var i = 0; i < portCodeIndices.Length; i++)
{
portCodeIndices[i] = new List <int>();
}
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"#include \"Packages/com.unity.shadergraph/ShaderGraphLibrary/Functions.hlsl\"{nl}");
for (var registryIndex = 0; registryIndex < registry.names.Count; registryIndex++)
{
var name = registry.names[registryIndex];
var source = registry.sources[name];
var precision = source.nodes.First().concretePrecision;
var hasPrecisionMismatch = false;
var nodeNames = new HashSet <string>();
foreach (var node in source.nodes)
{
nodeNames.Add(node.name);
if (node.concretePrecision != precision)
{
hasPrecisionMismatch = true;
break;
}
}
if (hasPrecisionMismatch)
{
var message = new StringBuilder($"Precision mismatch for function {name}:");
foreach (var node in source.nodes)
{
message.AppendLine($"{node.name} ({node.objectId}): {node.concretePrecision}");
}
throw new InvalidOperationException(message.ToString());
}
var code = source.code.Replace(PrecisionUtil.Token, precision.ToShaderString());
code = $"// Node: {string.Join(", ", nodeNames)}{nl}{code}";
var codeIndex = codeSnippets.Count;
codeSnippets.Add(code + nl);
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
var portNodeSet = portNodeSets[portIndex];
foreach (var node in source.nodes)
{
if (portNodeSet.Contains(node))
{
portCodeIndices[portIndex].Add(codeIndex);
break;
}
}
}
}
foreach (var property in graph.properties)
{
if (property.isExposable && property.generatePropertyBlock)
{
continue;
}
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
var portPropertySet = portPropertySets[portIndex];
if (portPropertySet.Contains(property.objectId))
{
portCodeIndices[portIndex].Add(codeSnippets.Count);
}
}
ShaderStringBuilder builder = new ShaderStringBuilder();
property.ForeachHLSLProperty(h => h.AppendTo(builder));
codeSnippets.Add($"// Property: {property.displayName}{nl}{builder.ToCodeBlock()}{nl}{nl}");
}
var inputStructName = $"SG_Input_{assetGuid}";
var outputStructName = $"SG_Output_{assetGuid}";
var evaluationFunctionName = $"SG_Evaluate_{assetGuid}";
#region Input Struct
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"struct {inputStructName}{nl}{{{nl}");
#region Requirements
var portRequirements = new ShaderGraphRequirements[ports.Count];
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
var requirementsNodes = portNodeSets[portIndex].ToList();
requirementsNodes.Add(ports[portIndex].owner);
portRequirements[portIndex] = ShaderGraphRequirements.FromNodes(requirementsNodes, ports[portIndex].stageCapability);
}
var portIndices = new List <int>();
portIndices.Capacity = ports.Count;
void AddRequirementsSnippet(Func <ShaderGraphRequirements, bool> predicate, string snippet)
{
portIndices.Clear();
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
if (predicate(portRequirements[portIndex]))
{
portIndices.Add(portIndex);
}
}
if (portIndices.Count > 0)
{
foreach (var portIndex in portIndices)
{
portCodeIndices[portIndex].Add(codeSnippets.Count);
}
codeSnippets.Add($"{indent}{snippet};{nl}");
}
}
void AddCoordinateSpaceSnippets(InterpolatorType interpolatorType, Func <ShaderGraphRequirements, NeededCoordinateSpace> selector)
{
foreach (var space in EnumInfo <CoordinateSpace> .values)
{
var neededSpace = space.ToNeededCoordinateSpace();
AddRequirementsSnippet(r => (selector(r) & neededSpace) > 0, $"float3 {space.ToVariableName(interpolatorType)}");
}
}
// TODO: Rework requirements system to make this better
AddCoordinateSpaceSnippets(InterpolatorType.Normal, r => r.requiresNormal);
AddCoordinateSpaceSnippets(InterpolatorType.Tangent, r => r.requiresTangent);
AddCoordinateSpaceSnippets(InterpolatorType.BiTangent, r => r.requiresBitangent);
AddCoordinateSpaceSnippets(InterpolatorType.ViewDirection, r => r.requiresViewDir);
AddCoordinateSpaceSnippets(InterpolatorType.Position, r => r.requiresPosition);
AddRequirementsSnippet(r => r.requiresVertexColor, $"float4 {ShaderGeneratorNames.VertexColor}");
AddRequirementsSnippet(r => r.requiresScreenPosition, $"float4 {ShaderGeneratorNames.ScreenPosition}");
AddRequirementsSnippet(r => r.requiresFaceSign, $"float4 {ShaderGeneratorNames.FaceSign}");
foreach (var uvChannel in EnumInfo <UVChannel> .values)
{
AddRequirementsSnippet(r => r.requiresMeshUVs.Contains(uvChannel), $"half4 {uvChannel.GetUVName()}");
}
AddRequirementsSnippet(r => r.requiresTime, $"float3 {ShaderGeneratorNames.TimeParameters}");
#endregion
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"}};{nl}{nl}");
#endregion
// VFX Code heavily relies on the slotId from the original MasterNodes
// Since we keep these around for upgrades anyway, for now it is simpler to use them
// Therefore we remap the output blocks back to the original Ids here
var originialPortIds = new int[ports.Count];
for (int i = 0; i < originialPortIds.Length; i++)
{
if (!VFXTarget.s_BlockMap.TryGetValue((ports[i].owner as BlockNode).descriptor, out var originalId))
{
continue;
}
// In Master Nodes we had a different BaseColor/Color slot id between Unlit/Lit
// In the stack we use BaseColor for both cases. Catch this here.
if (asset.lit && originalId == ShaderGraphVfxAsset.ColorSlotId)
{
originalId = ShaderGraphVfxAsset.BaseColorSlotId;
}
originialPortIds[i] = originalId;
}
#region Output Struct
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"struct {outputStructName}{nl}{{");
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
var port = ports[portIndex];
portCodeIndices[portIndex].Add(codeSnippets.Count);
codeSnippets.Add($"{nl}{indent}{port.concreteValueType.ToShaderString(graph.concretePrecision)} {port.shaderOutputName}_{originialPortIds[portIndex]};");
}
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"{nl}}};{nl}{nl}");
#endregion
#region Graph Function
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"{outputStructName} {evaluationFunctionName}({nl}{indent}{inputStructName} IN");
var inputProperties = new List <AbstractShaderProperty>();
var portPropertyIndices = new List <int> [ports.Count];
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
portPropertyIndices[portIndex] = new List <int>();
}
foreach (var property in graph.properties)
{
if (!property.isExposable || !property.generatePropertyBlock)
{
continue;
}
var propertyIndex = inputProperties.Count;
var codeIndex = codeSnippets.Count;
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
var portPropertySet = portPropertySets[portIndex];
if (portPropertySet.Contains(property.objectId))
{
portCodeIndices[portIndex].Add(codeIndex);
portPropertyIndices[portIndex].Add(propertyIndex);
}
}
inputProperties.Add(property);
codeSnippets.Add($",{nl}{indent}/* Property: {property.displayName} */ {property.GetPropertyAsArgumentString()}");
}
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"){nl}{{");
#region Node Code
for (var mappingIndex = 0; mappingIndex < bodySb.mappings.Count; mappingIndex++)
{
var mapping = bodySb.mappings[mappingIndex];
var code = bodySb.ToString(mapping.startIndex, mapping.count);
if (string.IsNullOrWhiteSpace(code))
{
continue;
}
code = $"{nl}{indent}// Node: {mapping.node.name}{nl}{code}";
var codeIndex = codeSnippets.Count;
codeSnippets.Add(code);
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
var portNodeSet = portNodeSets[portIndex];
if (portNodeSet.Contains(mapping.node))
{
portCodeIndices[portIndex].Add(codeIndex);
}
}
}
#endregion
#region Output Mapping
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"{nl}{indent}// VFXMasterNode{nl}{indent}{outputStructName} OUT;{nl}");
// Output mapping
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
var port = ports[portIndex];
portCodeIndices[portIndex].Add(codeSnippets.Count);
codeSnippets.Add($"{indent}OUT.{port.shaderOutputName}_{originialPortIds[portIndex]} = {port.owner.GetSlotValue(port.id, GenerationMode.ForReals, graph.concretePrecision)};{nl}");
}
#endregion
// Function end
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"{indent}return OUT;{nl}}}{nl}");
#endregion
result.codeSnippets = codeSnippets.ToArray();
result.sharedCodeIndices = sharedCodeIndices.ToArray();
result.outputCodeIndices = new IntArray[ports.Count];
for (var i = 0; i < ports.Count; i++)
{
result.outputCodeIndices[i] = portCodeIndices[i].ToArray();
}
var outputMetadatas = new OutputMetadata[ports.Count];
for (int portIndex = 0; portIndex < outputMetadatas.Length; portIndex++)
{
outputMetadatas[portIndex] = new OutputMetadata(portIndex, ports[portIndex].shaderOutputName, originialPortIds[portIndex]);
}
asset.SetOutputs(outputMetadatas);
asset.evaluationFunctionName = evaluationFunctionName;
asset.inputStructName = inputStructName;
asset.outputStructName = outputStructName;
asset.portRequirements = portRequirements;
asset.concretePrecision = graph.concretePrecision;
asset.SetProperties(inputProperties);
asset.outputPropertyIndices = new IntArray[ports.Count];
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
asset.outputPropertyIndices[portIndex] = portPropertyIndices[portIndex].ToArray();
}
return(asset);
}
private static string GetShaderPassFromTemplate(UnlitMasterNode masterNode, Pass pass, GenerationMode mode)
{
var builder = new ShaderStringBuilder();
builder.IncreaseIndent();
builder.IncreaseIndent();
var surfaceDescriptionFunction = new ShaderGenerator();
var surfaceDescriptionStruct = new ShaderGenerator();
var surfaceInputs = new ShaderGenerator();
var functionRegistry = new FunctionRegistry(builder);
var shaderProperties = new PropertyCollector();
surfaceInputs.AddShaderChunk("struct SurfaceInputs{", false);
surfaceInputs.Indent();
var activeNodeList = ListPool <INode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(activeNodeList, masterNode, NodeUtils.IncludeSelf.Include, pass.PixelShaderSlots);
var requirements = ShaderGraphRequirements.FromNodes(activeNodeList);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresNormal, InterpolatorType.Normal, surfaceInputs);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresTangent, InterpolatorType.Tangent, surfaceInputs);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresBitangent, InterpolatorType.BiTangent, surfaceInputs);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresViewDir, InterpolatorType.ViewDirection, surfaceInputs);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresPosition, InterpolatorType.Position, surfaceInputs);
ShaderGenerator defines = new ShaderGenerator();
defines.AddShaderChunk(string.Format("#define SHADERPASS {0}", pass.ShaderPassName), true);
if (requirements.requiresVertexColor)
{
surfaceInputs.AddShaderChunk(string.Format("float4 {0};", ShaderGeneratorNames.VertexColor), false);
}
if (requirements.requiresScreenPosition)
{
surfaceInputs.AddShaderChunk(string.Format("float4 {0};", ShaderGeneratorNames.ScreenPosition), false);
}
foreach (var channel in requirements.requiresMeshUVs.Distinct())
{
surfaceInputs.AddShaderChunk(string.Format("half4 {0};", channel.GetUVName()), false);
defines.AddShaderChunk(string.Format("#define ATTRIBUTES_NEED_TEXCOORD{0}", (int)channel), true);
defines.AddShaderChunk(string.Format("#define VARYINGS_NEED_TEXCOORD{0}", (int)channel), true);
}
surfaceInputs.Deindent();
surfaceInputs.AddShaderChunk("};", false);
var slots = new List <MaterialSlot>();
foreach (var id in pass.PixelShaderSlots)
{
var slot = masterNode.FindSlot <MaterialSlot>(id);
if (slot != null)
{
slots.Add(slot);
}
}
GraphUtil.GenerateSurfaceDescriptionStruct(surfaceDescriptionStruct, slots, true);
var usedSlots = new List <MaterialSlot>();
foreach (var id in pass.PixelShaderSlots)
{
usedSlots.Add(masterNode.FindSlot <MaterialSlot>(id));
}
GraphUtil.GenerateSurfaceDescription(
activeNodeList,
masterNode,
masterNode.owner as AbstractMaterialGraph,
surfaceDescriptionFunction,
functionRegistry,
shaderProperties,
requirements,
mode,
"PopulateSurfaceData",
"SurfaceDescription",
null,
usedSlots);
var graph = new ShaderGenerator();
graph.AddShaderChunk(shaderProperties.GetPropertiesDeclaration(2), false);
graph.AddShaderChunk(surfaceInputs.GetShaderString(2), false);
graph.AddShaderChunk(builder.ToString(), false);
graph.AddShaderChunk(surfaceDescriptionStruct.GetShaderString(2), false);
graph.AddShaderChunk(surfaceDescriptionFunction.GetShaderString(2), false);
var tagsVisitor = new ShaderGenerator();
var blendingVisitor = new ShaderGenerator();
var cullingVisitor = new ShaderGenerator();
var zTestVisitor = new ShaderGenerator();
var zWriteVisitor = new ShaderGenerator();
var materialOptions = new SurfaceMaterialOptions();
materialOptions.GetTags(tagsVisitor);
materialOptions.GetBlend(blendingVisitor);
materialOptions.GetCull(cullingVisitor);
materialOptions.GetDepthTest(zTestVisitor);
materialOptions.GetDepthWrite(zWriteVisitor);
var localPixelShader = new ShaderGenerator();
var localSurfaceInputs = new ShaderGenerator();
var surfaceOutputRemap = new ShaderGenerator();
foreach (var channel in requirements.requiresMeshUVs.Distinct())
{
localSurfaceInputs.AddShaderChunk(string.Format("surfaceInput.{0} = {1};", channel.GetUVName(), string.Format("half4(input.texCoord{0}, 0, 0)", (int)channel)), false);
}
var templateLocation = ShaderGenerator.GetTemplatePath("HDUnlitPassForward.template");
foreach (var slot in usedSlots)
{
surfaceOutputRemap.AddShaderChunk(slot.shaderOutputName
+ " = surf."
+ slot.shaderOutputName + ";", true);
}
if (!File.Exists(templateLocation))
{
return(string.Empty);
}
var subShaderTemplate = File.ReadAllText(templateLocation);
var resultPass = subShaderTemplate.Replace("${Defines}", defines.GetShaderString(3));
resultPass = resultPass.Replace("${Graph}", graph.GetShaderString(3));
resultPass = resultPass.Replace("${LocalPixelShader}", localPixelShader.GetShaderString(3));
resultPass = resultPass.Replace("${SurfaceInputs}", localSurfaceInputs.GetShaderString(3));
resultPass = resultPass.Replace("${SurfaceOutputRemap}", surfaceOutputRemap.GetShaderString(3));
resultPass = resultPass.Replace("${LightMode}", pass.Name);
resultPass = resultPass.Replace("${ShaderPassInclude}", pass.ShaderPassInclude);
resultPass = resultPass.Replace("${Tags}", tagsVisitor.GetShaderString(2));
resultPass = resultPass.Replace("${Blending}", blendingVisitor.GetShaderString(2));
resultPass = resultPass.Replace("${Culling}", cullingVisitor.GetShaderString(2));
resultPass = resultPass.Replace("${ZTest}", zTestVisitor.GetShaderString(2));
resultPass = resultPass.Replace("${ZWrite}", zWriteVisitor.GetShaderString(2));
resultPass = resultPass.Replace("${LOD}", "" + materialOptions.lod);
return(resultPass);
}
private static bool GenerateShaderPass(UnlitMasterNode masterNode, Pass pass, GenerationMode mode, SurfaceMaterialOptions materialOptions, ShaderGenerator result, List <string> sourceAssetDependencyPaths)
{
var templateLocation = Path.Combine(Path.Combine(Path.Combine(HDEditorUtils.GetHDRenderPipelinePath(), "Editor"), "ShaderGraph"), pass.TemplateName);
if (!File.Exists(templateLocation))
{
// TODO: produce error here
return(false);
}
sourceAssetDependencyPaths.Add(templateLocation);
// grab all of the active nodes
var activeNodeList = ListPool <INode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(activeNodeList, masterNode, NodeUtils.IncludeSelf.Include, pass.PixelShaderSlots);
// graph requirements describe what the graph itself requires
var graphRequirements = ShaderGraphRequirements.FromNodes(activeNodeList, ShaderStageCapability.All, true, true);
ShaderStringBuilder graphNodeFunctions = new ShaderStringBuilder();
graphNodeFunctions.IncreaseIndent();
var functionRegistry = new FunctionRegistry(graphNodeFunctions);
// Build the list of active slots based on what the pass requires
// TODO: this can be a shared function -- From here through GraphUtil.GenerateSurfaceDescription(..)
var activeSlots = new List <MaterialSlot>();
foreach (var id in pass.PixelShaderSlots)
{
MaterialSlot slot = masterNode.FindSlot <MaterialSlot>(id);
if (slot != null)
{
activeSlots.Add(slot);
}
}
// build the graph outputs structure to hold the results of each active slots (and fill out activeFields to indicate they are active)
string graphInputStructName = "SurfaceDescriptionInputs";
string graphOutputStructName = "SurfaceDescription";
string graphEvalFunctionName = "SurfaceDescriptionFunction";
var graphEvalFunction = new ShaderStringBuilder();
var graphOutputs = new ShaderStringBuilder();
PropertyCollector graphProperties = new PropertyCollector();
// build the graph outputs structure, and populate activeFields with the fields of that structure
HashSet <string> activeFields = new HashSet <string>();
GraphUtil.GenerateSurfaceDescriptionStruct(graphOutputs, activeSlots, true);
// Build the graph evaluation code, to evaluate the specified slots
GraphUtil.GenerateSurfaceDescriptionFunction(
activeNodeList,
masterNode,
masterNode.owner as AbstractMaterialGraph,
graphEvalFunction,
functionRegistry,
graphProperties,
graphRequirements, // TODO : REMOVE UNUSED
mode,
graphEvalFunctionName,
graphOutputStructName,
null,
activeSlots,
graphInputStructName);
var blendCode = new ShaderStringBuilder();
var cullCode = new ShaderStringBuilder();
var zTestCode = new ShaderStringBuilder();
var zWriteCode = new ShaderStringBuilder();
var stencilCode = new ShaderStringBuilder();
var colorMaskCode = new ShaderStringBuilder();
HDSubShaderUtilities.BuildRenderStatesFromPassAndMaterialOptions(pass, materialOptions, blendCode, cullCode, zTestCode, zWriteCode, stencilCode, colorMaskCode);
if (masterNode.twoSided.isOn)
{
activeFields.Add("DoubleSided");
if (pass.ShaderPassName != "SHADERPASS_VELOCITY") // HACK to get around lack of a good interpolator dependency system
{ // we need to be able to build interpolators using multiple input structs
// also: should only require isFrontFace if Normals are required...
activeFields.Add("DoubleSided.Mirror"); // TODO: change this depending on what kind of normal flip you want..
activeFields.Add("FragInputs.isFrontFace"); // will need this for determining normal flip mode
}
}
if (pass.PixelShaderSlots != null)
{
foreach (var slotId in pass.PixelShaderSlots)
{
var slot = masterNode.FindSlot <MaterialSlot>(slotId);
if (slot != null)
{
var rawSlotName = slot.RawDisplayName().ToString();
var descriptionVar = string.Format("{0}.{1}", graphOutputStructName, rawSlotName);
activeFields.Add(descriptionVar);
}
}
}
var packedInterpolatorCode = new ShaderGenerator();
var graphInputs = new ShaderGenerator();
HDRPShaderStructs.Generate(
packedInterpolatorCode,
graphInputs,
graphRequirements,
pass.RequiredFields,
CoordinateSpace.World,
activeFields);
// debug output all active fields
var interpolatorDefines = new ShaderGenerator();
{
interpolatorDefines.AddShaderChunk("// ACTIVE FIELDS:");
foreach (string f in activeFields)
{
interpolatorDefines.AddShaderChunk("// " + f);
}
}
ShaderGenerator defines = new ShaderGenerator();
{
defines.AddShaderChunk(string.Format("#define SHADERPASS {0}", pass.ShaderPassName), true);
if (pass.ExtraDefines != null)
{
foreach (var define in pass.ExtraDefines)
{
defines.AddShaderChunk(define);
}
}
defines.AddGenerator(interpolatorDefines);
}
var shaderPassIncludes = new ShaderGenerator();
if (pass.Includes != null)
{
foreach (var include in pass.Includes)
{
shaderPassIncludes.AddShaderChunk(include);
}
}
// build graph code
var graph = new ShaderGenerator();
graph.AddShaderChunk("// Graph Inputs");
graph.Indent();
graph.AddGenerator(graphInputs);
graph.Deindent();
graph.AddShaderChunk("// Graph Outputs");
graph.Indent();
graph.AddShaderChunk(graphOutputs.ToString());
//graph.AddGenerator(graphOutputs);
graph.Deindent();
graph.AddShaderChunk("// Graph Properties (uniform inputs)");
graph.AddShaderChunk(graphProperties.GetPropertiesDeclaration(1));
graph.AddShaderChunk("// Graph Node Functions");
graph.AddShaderChunk(graphNodeFunctions.ToString());
graph.AddShaderChunk("// Graph Evaluation");
graph.Indent();
graph.AddShaderChunk(graphEvalFunction.ToString());
//graph.AddGenerator(graphEvalFunction);
graph.Deindent();
// build the hash table of all named fragments TODO: could make this Dictionary<string, ShaderGenerator / string> ?
Dictionary <string, string> namedFragments = new Dictionary <string, string>();
namedFragments.Add("${Defines}", defines.GetShaderString(2, false));
namedFragments.Add("${Graph}", graph.GetShaderString(2, false));
namedFragments.Add("${LightMode}", pass.LightMode);
namedFragments.Add("${PassName}", pass.Name);
namedFragments.Add("${Includes}", shaderPassIncludes.GetShaderString(2, false));
namedFragments.Add("${InterpolatorPacking}", packedInterpolatorCode.GetShaderString(2, false));
namedFragments.Add("${Blending}", blendCode.ToString());
namedFragments.Add("${Culling}", cullCode.ToString());
namedFragments.Add("${ZTest}", zTestCode.ToString());
namedFragments.Add("${ZWrite}", zWriteCode.ToString());
namedFragments.Add("${Stencil}", stencilCode.ToString());
namedFragments.Add("${ColorMask}", colorMaskCode.ToString());
namedFragments.Add("${LOD}", materialOptions.lod.ToString());
namedFragments.Add("${VariantDefines}", GetVariantDefines(masterNode));
// process the template to generate the shader code for this pass TODO: could make this a shared function
string[] templateLines = File.ReadAllLines(templateLocation);
System.Text.StringBuilder builder = new System.Text.StringBuilder();
foreach (string line in templateLines)
{
ShaderSpliceUtil.PreprocessShaderCode(line, activeFields, namedFragments, builder);
builder.AppendLine();
}
result.AddShaderChunk(builder.ToString(), false);
return(true);
}
private static string GetShaderPassFromTemplate(string template, PBRMasterNode masterNode, Pass pass, GenerationMode mode, SurfaceMaterialOptions materialOptions)
{
var builder = new ShaderStringBuilder();
builder.IncreaseIndent();
builder.IncreaseIndent();
var vertexInputs = new ShaderGenerator();
var surfaceVertexShader = new ShaderGenerator();
var surfaceDescriptionFunction = new ShaderGenerator();
var surfaceDescriptionStruct = new ShaderGenerator();
var functionRegistry = new FunctionRegistry(builder);
var surfaceInputs = new ShaderGenerator();
var shaderProperties = new PropertyCollector();
surfaceInputs.AddShaderChunk("struct SurfaceInputs{", false);
surfaceInputs.Indent();
var activeNodeList = ListPool <INode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(activeNodeList, masterNode, NodeUtils.IncludeSelf.Include, pass.PixelShaderSlots);
var requirements = ShaderGraphRequirements.FromNodes(activeNodeList);
var modelRequiements = ShaderGraphRequirements.none;
modelRequiements.requiresNormal |= NeededCoordinateSpace.World;
modelRequiements.requiresTangent |= NeededCoordinateSpace.World;
modelRequiements.requiresBitangent |= NeededCoordinateSpace.World;
modelRequiements.requiresPosition |= NeededCoordinateSpace.World;
modelRequiements.requiresViewDir |= NeededCoordinateSpace.World;
modelRequiements.requiresMeshUVs.Add(UVChannel.UV1);
GraphUtil.GenerateApplicationVertexInputs(requirements.Union(modelRequiements), vertexInputs);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresNormal, InterpolatorType.Normal, surfaceInputs);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresTangent, InterpolatorType.Tangent, surfaceInputs);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresBitangent, InterpolatorType.BiTangent, surfaceInputs);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresViewDir, InterpolatorType.ViewDirection, surfaceInputs);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresPosition, InterpolatorType.Position, surfaceInputs);
if (requirements.requiresVertexColor)
{
surfaceInputs.AddShaderChunk(string.Format("float4 {0};", ShaderGeneratorNames.VertexColor), false);
}
if (requirements.requiresScreenPosition)
{
surfaceInputs.AddShaderChunk(string.Format("float4 {0};", ShaderGeneratorNames.ScreenPosition), false);
}
foreach (var channel in requirements.requiresMeshUVs.Distinct())
{
surfaceInputs.AddShaderChunk(string.Format("half4 {0};", channel.GetUVName()), false);
}
surfaceInputs.Deindent();
surfaceInputs.AddShaderChunk("};", false);
surfaceVertexShader.AddShaderChunk("GraphVertexInput PopulateVertexData(GraphVertexInput v){", false);
surfaceVertexShader.Indent();
surfaceVertexShader.AddShaderChunk("return v;", false);
surfaceVertexShader.Deindent();
surfaceVertexShader.AddShaderChunk("}", false);
var slots = new List <MaterialSlot>();
foreach (var id in pass.PixelShaderSlots)
{
slots.Add(masterNode.FindSlot <MaterialSlot>(id));
}
GraphUtil.GenerateSurfaceDescriptionStruct(surfaceDescriptionStruct, slots, true);
var usedSlots = new List <MaterialSlot>();
foreach (var id in pass.PixelShaderSlots)
{
usedSlots.Add(masterNode.FindSlot <MaterialSlot>(id));
}
GraphUtil.GenerateSurfaceDescription(
activeNodeList,
masterNode,
masterNode.owner as AbstractMaterialGraph,
surfaceDescriptionFunction,
functionRegistry,
shaderProperties,
requirements,
mode,
"PopulateSurfaceData",
"SurfaceDescription",
null,
usedSlots);
var graph = new ShaderGenerator();
graph.AddShaderChunk(shaderProperties.GetPropertiesDeclaration(2), false);
graph.AddShaderChunk(surfaceInputs.GetShaderString(2), false);
graph.AddShaderChunk(builder.ToString(), false);
graph.AddShaderChunk(vertexInputs.GetShaderString(2), false);
graph.AddShaderChunk(surfaceDescriptionStruct.GetShaderString(2), false);
graph.AddShaderChunk(surfaceVertexShader.GetShaderString(2), false);
graph.AddShaderChunk(surfaceDescriptionFunction.GetShaderString(2), false);
var blendingVisitor = new ShaderGenerator();
var cullingVisitor = new ShaderGenerator();
var zTestVisitor = new ShaderGenerator();
var zWriteVisitor = new ShaderGenerator();
materialOptions.GetBlend(blendingVisitor);
materialOptions.GetCull(cullingVisitor);
materialOptions.GetDepthTest(zTestVisitor);
materialOptions.GetDepthWrite(zWriteVisitor);
var interpolators = new ShaderGenerator();
var localVertexShader = new ShaderGenerator();
var localPixelShader = new ShaderGenerator();
var localSurfaceInputs = new ShaderGenerator();
var surfaceOutputRemap = new ShaderGenerator();
ShaderGenerator.GenerateStandardTransforms(
3,
10,
interpolators,
localVertexShader,
localPixelShader,
localSurfaceInputs,
requirements,
modelRequiements,
CoordinateSpace.World);
ShaderGenerator defines = new ShaderGenerator();
if (masterNode.IsSlotConnected(PBRMasterNode.NormalSlotId))
{
defines.AddShaderChunk("#define _NORMALMAP 1", true);
}
if (masterNode.model == PBRMasterNode.Model.Specular)
{
defines.AddShaderChunk("#define _SPECULAR_SETUP 1", true);
}
if (masterNode.IsSlotConnected(PBRMasterNode.AlphaThresholdSlotId))
{
defines.AddShaderChunk("#define _AlphaClip 1", true);
}
if (masterNode.surfaceType == SurfaceType.Transparent && masterNode.alphaMode == AlphaMode.Premultiply)
{
defines.AddShaderChunk("#define _ALPHAPREMULTIPLY_ON 1", true);
}
var templateLocation = ShaderGenerator.GetTemplatePath(template);
foreach (var slot in usedSlots)
{
surfaceOutputRemap.AddShaderChunk(string.Format("{0} = surf.{0};", slot.shaderOutputName), true);
}
if (!File.Exists(templateLocation))
{
return(string.Empty);
}
var subShaderTemplate = File.ReadAllText(templateLocation);
var resultPass = subShaderTemplate.Replace("${Defines}", defines.GetShaderString(3));
resultPass = resultPass.Replace("${Graph}", graph.GetShaderString(3));
resultPass = resultPass.Replace("${Interpolators}", interpolators.GetShaderString(3));
resultPass = resultPass.Replace("${VertexShader}", localVertexShader.GetShaderString(3));
resultPass = resultPass.Replace("${LocalPixelShader}", localPixelShader.GetShaderString(3));
resultPass = resultPass.Replace("${SurfaceInputs}", localSurfaceInputs.GetShaderString(3));
resultPass = resultPass.Replace("${SurfaceOutputRemap}", surfaceOutputRemap.GetShaderString(3));
resultPass = resultPass.Replace("${Tags}", string.Empty);
resultPass = resultPass.Replace("${Blending}", blendingVisitor.GetShaderString(2));
resultPass = resultPass.Replace("${Culling}", cullingVisitor.GetShaderString(2));
resultPass = resultPass.Replace("${ZTest}", zTestVisitor.GetShaderString(2));
resultPass = resultPass.Replace("${ZWrite}", zWriteVisitor.GetShaderString(2));
return(resultPass);
}
static void ProcessSubGraph(SubGraphAsset asset, GraphData graph)
{
var graphIncludes = new IncludeCollection();
var registry = new FunctionRegistry(new ShaderStringBuilder(), graphIncludes, true);
asset.functions.Clear();
asset.isValid = true;
graph.OnEnable();
graph.messageManager.ClearAll();
graph.ValidateGraph();
var assetPath = AssetDatabase.GUIDToAssetPath(asset.assetGuid);
asset.hlslName = NodeUtils.GetHLSLSafeName(Path.GetFileNameWithoutExtension(assetPath));
asset.inputStructName = $"Bindings_{asset.hlslName}_{asset.assetGuid}_$precision";
asset.functionName = $"SG_{asset.hlslName}_{asset.assetGuid}_$precision";
asset.path = graph.path;
var outputNode = graph.outputNode;
var outputSlots = PooledList <MaterialSlot> .Get();
outputNode.GetInputSlots(outputSlots);
List <AbstractMaterialNode> nodes = new List <AbstractMaterialNode>();
NodeUtils.DepthFirstCollectNodesFromNode(nodes, outputNode);
asset.effectiveShaderStage = ShaderStageCapability.All;
foreach (var slot in outputSlots)
{
var stage = NodeUtils.GetEffectiveShaderStageCapability(slot, true);
if (stage != ShaderStageCapability.All)
{
asset.effectiveShaderStage = stage;
break;
}
}
asset.vtFeedbackVariables = VirtualTexturingFeedbackUtils.GetFeedbackVariables(outputNode as SubGraphOutputNode);
asset.requirements = ShaderGraphRequirements.FromNodes(nodes, asset.effectiveShaderStage, false);
// output precision is whatever the output node has as a graph precision, falling back to the graph default
asset.outputGraphPrecision = outputNode.graphPrecision.GraphFallback(graph.graphDefaultPrecision);
// this saves the graph precision, which indicates whether this subgraph is switchable or not
asset.subGraphGraphPrecision = graph.graphDefaultPrecision;
asset.previewMode = graph.previewMode;
asset.includes = graphIncludes;
GatherDescendentsFromGraph(new GUID(asset.assetGuid), out var containsCircularDependency, out var descendents);
asset.descendents.AddRange(descendents.Select(g => g.ToString()));
asset.descendents.Sort(); // ensure deterministic order
var childrenSet = new HashSet <string>();
var anyErrors = false;
foreach (var node in nodes)
{
if (node is SubGraphNode subGraphNode)
{
var subGraphGuid = subGraphNode.subGraphGuid;
childrenSet.Add(subGraphGuid);
}
if (node.hasError)
{
anyErrors = true;
}
asset.children = childrenSet.ToList();
asset.children.Sort(); // ensure deterministic order
}
if (!anyErrors && containsCircularDependency)
{
Debug.LogError($"Error in Graph at {assetPath}: Sub Graph contains a circular dependency.", asset);
anyErrors = true;
}
if (anyErrors)
{
asset.isValid = false;
registry.ProvideFunction(asset.functionName, sb => {});
return;
}
foreach (var node in nodes)
{
if (node is IGeneratesFunction generatesFunction)
{
registry.builder.currentNode = node;
generatesFunction.GenerateNodeFunction(registry, GenerationMode.ForReals);
}
}
// provide top level subgraph function
// NOTE: actual concrete precision here shouldn't matter, it's irrelevant when building the subgraph asset
registry.ProvideFunction(asset.functionName, asset.subGraphGraphPrecision, ConcretePrecision.Single, sb =>
{
GenerationUtils.GenerateSurfaceInputStruct(sb, asset.requirements, asset.inputStructName);
sb.AppendNewLine();
// Generate the arguments... first INPUTS
var arguments = new List <string>();
foreach (var prop in graph.properties)
{
// apply fallback to the graph default precision (but don't convert to concrete)
// this means "graph switchable" properties will use the precision token
GraphPrecision propGraphPrecision = prop.precision.ToGraphPrecision(graph.graphDefaultPrecision);
string precisionString = propGraphPrecision.ToGenericString();
arguments.Add(prop.GetPropertyAsArgumentString(precisionString));
if (prop.isConnectionTestable)
{
arguments.Add($"bool {prop.GetConnectionStateHLSLVariableName()}");
}
}
{
var dropdowns = graph.dropdowns;
foreach (var dropdown in dropdowns)
{
arguments.Add($"int {dropdown.referenceName}");
}
}
// now pass surface inputs
arguments.Add(string.Format("{0} IN", asset.inputStructName));
// Now generate output arguments
foreach (MaterialSlot output in outputSlots)
{
arguments.Add($"out {output.concreteValueType.ToShaderString(asset.outputGraphPrecision.ToGenericString())} {output.shaderOutputName}_{output.id}");
}
// Vt Feedback output arguments (always full float4)
foreach (var output in asset.vtFeedbackVariables)
{
arguments.Add($"out {ConcreteSlotValueType.Vector4.ToShaderString(ConcretePrecision.Single)} {output}_out");
}
// Create the function prototype from the arguments
sb.AppendLine("void {0}({1})"
, asset.functionName
, arguments.Aggregate((current, next) => $"{current}, {next}"));
// now generate the function
using (sb.BlockScope())
{
// Just grab the body from the active nodes
foreach (var node in nodes)
{
if (node is IGeneratesBodyCode generatesBodyCode)
{
sb.currentNode = node;
generatesBodyCode.GenerateNodeCode(sb, GenerationMode.ForReals);
if (node.graphPrecision == GraphPrecision.Graph)
{
// code generated by nodes that use graph precision stays in generic form with embedded tokens
// those tokens are replaced when this subgraph function is pulled into a graph that defines the precision
}
else
{
sb.ReplaceInCurrentMapping(PrecisionUtil.Token, node.concretePrecision.ToShaderString());
}
}
}
foreach (var slot in outputSlots)
{
sb.AppendLine($"{slot.shaderOutputName}_{slot.id} = {outputNode.GetSlotValue(slot.id, GenerationMode.ForReals)};");
}
foreach (var slot in asset.vtFeedbackVariables)
{
sb.AppendLine($"{slot}_out = {slot};");
}
}
});
// save all of the node-declared functions to the subgraph asset
foreach (var name in registry.names)
{
var source = registry.sources[name];
var func = new FunctionPair(name, source.code, source.graphPrecisionFlags);
asset.functions.Add(func);
}
var collector = new PropertyCollector();
foreach (var node in nodes)
{
int previousPropertyCount = Math.Max(0, collector.propertyCount - 1);
node.CollectShaderProperties(collector, GenerationMode.ForReals);
// This is a stop-gap to prevent the autogenerated values from JsonObject and ShaderInput from
// resulting in non-deterministic import data. While we should move to local ids in the future,
// this will prevent cascading shader recompilations.
for (int i = previousPropertyCount; i < collector.propertyCount; ++i)
{
var prop = collector.GetProperty(i);
var namespaceId = node.objectId;
var nameId = prop.referenceName;
prop.OverrideObjectId(namespaceId, nameId + "_ObjectId_" + i);
prop.OverrideGuid(namespaceId, nameId + "_Guid_" + i);
}
}
asset.WriteData(graph.properties, graph.keywords, graph.dropdowns, collector.properties, outputSlots, graph.unsupportedTargets);
outputSlots.Dispose();
}
public static bool GenerateShaderPass(AbstractMaterialNode masterNode, Pass pass, GenerationMode mode, SurfaceMaterialOptions materialOptions, HashSet <string> activeFields, ShaderGenerator result, List <string> sourceAssetDependencyPaths, bool vertexActive)
{
string templatePath = Path.Combine(HDUtils.GetHDRenderPipelinePath(), "Editor/Material");
string templateLocation = Path.Combine(Path.Combine(Path.Combine(templatePath, pass.MaterialName), "ShaderGraph"), pass.TemplateName);
if (!File.Exists(templateLocation))
{
// TODO: produce error here
Debug.LogError("Template not found: " + templateLocation);
return(false);
}
bool debugOutput = false;
// grab all of the active nodes (for pixel and vertex graphs)
var vertexNodes = ListPool <INode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(vertexNodes, masterNode, NodeUtils.IncludeSelf.Include, pass.VertexShaderSlots);
var pixelNodes = ListPool <INode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(pixelNodes, masterNode, NodeUtils.IncludeSelf.Include, pass.PixelShaderSlots);
// graph requirements describe what the graph itself requires
var pixelRequirements = ShaderGraphRequirements.FromNodes(pixelNodes, ShaderStageCapability.Fragment, false); // TODO: is ShaderStageCapability.Fragment correct?
var vertexRequirements = ShaderGraphRequirements.FromNodes(vertexNodes, ShaderStageCapability.Vertex, false);
var graphRequirements = pixelRequirements.Union(vertexRequirements);
// Function Registry tracks functions to remove duplicates, it wraps a string builder that stores the combined function string
ShaderStringBuilder graphNodeFunctions = new ShaderStringBuilder();
graphNodeFunctions.IncreaseIndent();
var functionRegistry = new FunctionRegistry(graphNodeFunctions);
// TODO: this can be a shared function for all HDRP master nodes -- From here through GraphUtil.GenerateSurfaceDescription(..)
// Build the list of active slots based on what the pass requires
var pixelSlots = HDSubShaderUtilities.FindMaterialSlotsOnNode(pass.PixelShaderSlots, masterNode);
var vertexSlots = HDSubShaderUtilities.FindMaterialSlotsOnNode(pass.VertexShaderSlots, masterNode);
// properties used by either pixel and vertex shader
PropertyCollector sharedProperties = new PropertyCollector();
// build the graph outputs structure to hold the results of each active slots (and fill out activeFields to indicate they are active)
string pixelGraphInputStructName = "SurfaceDescriptionInputs";
string pixelGraphOutputStructName = "SurfaceDescription";
string pixelGraphEvalFunctionName = "SurfaceDescriptionFunction";
ShaderStringBuilder pixelGraphEvalFunction = new ShaderStringBuilder();
ShaderStringBuilder pixelGraphOutputs = new ShaderStringBuilder();
// build initial requirements
HDRPShaderStructs.AddActiveFieldsFromPixelGraphRequirements(activeFields, pixelRequirements);
// build the graph outputs structure, and populate activeFields with the fields of that structure
GraphUtil.GenerateSurfaceDescriptionStruct(pixelGraphOutputs, pixelSlots, true, pixelGraphOutputStructName, activeFields);
// Build the graph evaluation code, to evaluate the specified slots
GraphUtil.GenerateSurfaceDescriptionFunction(
pixelNodes,
masterNode,
masterNode.owner as AbstractMaterialGraph,
pixelGraphEvalFunction,
functionRegistry,
sharedProperties,
pixelRequirements, // TODO : REMOVE UNUSED
mode,
pixelGraphEvalFunctionName,
pixelGraphOutputStructName,
null,
pixelSlots,
pixelGraphInputStructName);
string vertexGraphInputStructName = "VertexDescriptionInputs";
string vertexGraphOutputStructName = "VertexDescription";
string vertexGraphEvalFunctionName = "VertexDescriptionFunction";
ShaderStringBuilder vertexGraphEvalFunction = new ShaderStringBuilder();
ShaderStringBuilder vertexGraphOutputs = new ShaderStringBuilder();
// check for vertex animation -- enables HAVE_VERTEX_MODIFICATION
if (vertexActive)
{
vertexActive = true;
activeFields.Add("features.modifyMesh");
HDRPShaderStructs.AddActiveFieldsFromVertexGraphRequirements(activeFields, vertexRequirements);
// -------------------------------------
// Generate Output structure for Vertex Description function
GraphUtil.GenerateVertexDescriptionStruct(vertexGraphOutputs, vertexSlots, vertexGraphOutputStructName, activeFields);
// -------------------------------------
// Generate Vertex Description function
GraphUtil.GenerateVertexDescriptionFunction(
masterNode.owner as AbstractMaterialGraph,
vertexGraphEvalFunction,
functionRegistry,
sharedProperties,
mode,
vertexNodes,
vertexSlots,
vertexGraphInputStructName,
vertexGraphEvalFunctionName,
vertexGraphOutputStructName);
}
var blendCode = new ShaderStringBuilder();
var cullCode = new ShaderStringBuilder();
var zTestCode = new ShaderStringBuilder();
var zWriteCode = new ShaderStringBuilder();
var zClipCode = new ShaderStringBuilder();
var stencilCode = new ShaderStringBuilder();
var colorMaskCode = new ShaderStringBuilder();
HDSubShaderUtilities.BuildRenderStatesFromPassAndMaterialOptions(pass, materialOptions, blendCode, cullCode, zTestCode, zWriteCode, zClipCode, stencilCode, colorMaskCode);
HDRPShaderStructs.AddRequiredFields(pass.RequiredFields, activeFields);
// propagate active field requirements using dependencies
ShaderSpliceUtil.ApplyDependencies(
activeFields,
new List <Dependency[]>()
{
HDRPShaderStructs.FragInputs.dependencies,
HDRPShaderStructs.VaryingsMeshToPS.standardDependencies,
HDRPShaderStructs.SurfaceDescriptionInputs.dependencies,
HDRPShaderStructs.VertexDescriptionInputs.dependencies
});
// debug output all active fields
var interpolatorDefines = new ShaderGenerator();
if (debugOutput)
{
interpolatorDefines.AddShaderChunk("// ACTIVE FIELDS:");
foreach (string f in activeFields)
{
interpolatorDefines.AddShaderChunk("// " + f);
}
}
// build graph inputs structures
ShaderGenerator pixelGraphInputs = new ShaderGenerator();
ShaderSpliceUtil.BuildType(typeof(HDRPShaderStructs.SurfaceDescriptionInputs), activeFields, pixelGraphInputs);
ShaderGenerator vertexGraphInputs = new ShaderGenerator();
ShaderSpliceUtil.BuildType(typeof(HDRPShaderStructs.VertexDescriptionInputs), activeFields, vertexGraphInputs);
ShaderGenerator defines = new ShaderGenerator();
{
defines.AddShaderChunk(string.Format("#define SHADERPASS {0}", pass.ShaderPassName), true);
if (pass.ExtraDefines != null)
{
foreach (var define in pass.ExtraDefines)
{
defines.AddShaderChunk(define);
}
}
if (graphRequirements.requiresDepthTexture)
{
defines.AddShaderChunk("#define REQUIRE_DEPTH_TEXTURE");
}
defines.AddGenerator(interpolatorDefines);
}
var shaderPassIncludes = new ShaderGenerator();
if (pass.Includes != null)
{
foreach (var include in pass.Includes)
{
shaderPassIncludes.AddShaderChunk(include);
}
}
// build graph code
var graph = new ShaderGenerator();
{
graph.AddShaderChunk("// Shared Graph Properties (uniform inputs)");
graph.AddShaderChunk(sharedProperties.GetPropertiesDeclaration(1));
if (vertexActive)
{
graph.AddShaderChunk("// Vertex Graph Inputs");
graph.Indent();
graph.AddGenerator(vertexGraphInputs);
graph.Deindent();
graph.AddShaderChunk("// Vertex Graph Outputs");
graph.Indent();
graph.AddShaderChunk(vertexGraphOutputs.ToString());
graph.Deindent();
}
graph.AddShaderChunk("// Pixel Graph Inputs");
graph.Indent();
graph.AddGenerator(pixelGraphInputs);
graph.Deindent();
graph.AddShaderChunk("// Pixel Graph Outputs");
graph.Indent();
graph.AddShaderChunk(pixelGraphOutputs.ToString());
graph.Deindent();
graph.AddShaderChunk("// Shared Graph Node Functions");
graph.AddShaderChunk(graphNodeFunctions.ToString());
if (vertexActive)
{
graph.AddShaderChunk("// Vertex Graph Evaluation");
graph.Indent();
graph.AddShaderChunk(vertexGraphEvalFunction.ToString());
graph.Deindent();
}
graph.AddShaderChunk("// Pixel Graph Evaluation");
graph.Indent();
graph.AddShaderChunk(pixelGraphEvalFunction.ToString());
graph.Deindent();
}
// build the hash table of all named fragments TODO: could make this Dictionary<string, ShaderGenerator / string> ?
Dictionary <string, string> namedFragments = new Dictionary <string, string>();
namedFragments.Add("Defines", defines.GetShaderString(2, false));
namedFragments.Add("Graph", graph.GetShaderString(2, false));
namedFragments.Add("LightMode", pass.LightMode);
namedFragments.Add("PassName", pass.Name);
namedFragments.Add("Includes", shaderPassIncludes.GetShaderString(2, false));
namedFragments.Add("Blending", blendCode.ToString());
namedFragments.Add("Culling", cullCode.ToString());
namedFragments.Add("ZTest", zTestCode.ToString());
namedFragments.Add("ZWrite", zWriteCode.ToString());
namedFragments.Add("ZClip", zClipCode.ToString());
namedFragments.Add("Stencil", stencilCode.ToString());
namedFragments.Add("ColorMask", colorMaskCode.ToString());
namedFragments.Add("LOD", materialOptions.lod.ToString());
// this is the format string for building the 'C# qualified assembly type names' for $buildType() commands
string buildTypeAssemblyNameFormat = "UnityEditor.Experimental.Rendering.HDPipeline.HDRPShaderStructs+{0}, " + typeof(HDSubShaderUtilities).Assembly.FullName.ToString();
string sharedTemplatePath = Path.Combine(Path.Combine(HDUtils.GetHDRenderPipelinePath(), "Editor"), "ShaderGraph");
// process the template to generate the shader code for this pass
ShaderSpliceUtil.TemplatePreprocessor templatePreprocessor =
new ShaderSpliceUtil.TemplatePreprocessor(activeFields, namedFragments, debugOutput, sharedTemplatePath, sourceAssetDependencyPaths, buildTypeAssemblyNameFormat);
templatePreprocessor.ProcessTemplateFile(templateLocation);
result.AddShaderChunk(templatePreprocessor.GetShaderCode().ToString(), false);
return(true);
}
static void ProcessSubGraph(SubGraphAsset asset, GraphData graph)
{
var registry = new FunctionRegistry(new ShaderStringBuilder(), true);
registry.names.Clear();
asset.functions.Clear();
asset.nodeProperties.Clear();
asset.isValid = true;
graph.OnEnable();
graph.messageManager.ClearAll();
graph.ValidateGraph();
var assetPath = AssetDatabase.GUIDToAssetPath(asset.assetGuid);
asset.hlslName = NodeUtils.GetHLSLSafeName(Path.GetFileNameWithoutExtension(assetPath));
asset.inputStructName = $"Bindings_{asset.hlslName}_{asset.assetGuid}";
asset.functionName = $"SG_{asset.hlslName}_{asset.assetGuid}";
asset.path = graph.path;
var outputNode = (SubGraphOutputNode)graph.outputNode;
asset.outputs.Clear();
outputNode.GetInputSlots(asset.outputs);
List <AbstractMaterialNode> nodes = new List <AbstractMaterialNode>();
NodeUtils.DepthFirstCollectNodesFromNode(nodes, outputNode);
asset.effectiveShaderStage = ShaderStageCapability.All;
foreach (var slot in asset.outputs)
{
var stage = NodeUtils.GetEffectiveShaderStageCapability(slot, true);
if (stage != ShaderStageCapability.All)
{
asset.effectiveShaderStage = stage;
break;
}
}
asset.requirements = ShaderGraphRequirements.FromNodes(nodes, asset.effectiveShaderStage, false);
asset.inputs = graph.properties.ToList();
asset.graphPrecision = graph.concretePrecision;
asset.outputPrecision = outputNode.concretePrecision;
GatherFromGraph(assetPath, out var containsCircularDependency, out var descendents);
asset.descendents.AddRange(descendents);
var childrenSet = new HashSet <string>();
var anyErrors = false;
foreach (var node in nodes)
{
if (node is SubGraphNode subGraphNode)
{
var subGraphGuid = subGraphNode.subGraphGuid;
if (childrenSet.Add(subGraphGuid))
{
asset.children.Add(subGraphGuid);
}
}
if (node.hasError)
{
anyErrors = true;
}
}
if (!anyErrors && containsCircularDependency)
{
Debug.LogError($"Error in Graph at {assetPath}: Sub Graph contains a circular dependency.", asset);
anyErrors = true;
}
if (anyErrors)
{
asset.isValid = false;
registry.ProvideFunction(asset.functionName, sb => { });
return;
}
foreach (var node in nodes)
{
if (node is IGeneratesFunction generatesFunction)
{
registry.builder.currentNode = node;
generatesFunction.GenerateNodeFunction(registry, new GraphContext(asset.inputStructName), GenerationMode.ForReals);
registry.builder.ReplaceInCurrentMapping(PrecisionUtil.Token, node.concretePrecision.ToShaderString());
}
}
registry.ProvideFunction(asset.functionName, sb =>
{
var graphContext = new GraphContext(asset.inputStructName);
GraphUtil.GenerateSurfaceInputStruct(sb, asset.requirements, asset.inputStructName);
sb.AppendNewLine();
// Generate arguments... first INPUTS
var arguments = new List <string>();
foreach (var prop in asset.inputs)
{
prop.ValidateConcretePrecision(asset.graphPrecision);
arguments.Add(string.Format("{0}", prop.GetPropertyAsArgumentString()));
}
// now pass surface inputs
arguments.Add(string.Format("{0} IN", asset.inputStructName));
// Now generate outputs
foreach (var output in asset.outputs)
{
arguments.Add($"out {output.concreteValueType.ToShaderString(asset.outputPrecision)} {output.shaderOutputName}_{output.id}");
}
// Create the function prototype from the arguments
sb.AppendLine("void {0}({1})"
, asset.functionName
, arguments.Aggregate((current, next) => $"{current}, {next}"));
// now generate the function
using (sb.BlockScope())
{
// Just grab the body from the active nodes
foreach (var node in nodes)
{
if (node is IGeneratesBodyCode generatesBodyCode)
{
sb.currentNode = node;
generatesBodyCode.GenerateNodeCode(sb, graphContext, GenerationMode.ForReals);
sb.ReplaceInCurrentMapping(PrecisionUtil.Token, node.concretePrecision.ToShaderString());
}
}
foreach (var slot in asset.outputs)
{
sb.AppendLine($"{slot.shaderOutputName}_{slot.id} = {outputNode.GetSlotValue(slot.id, GenerationMode.ForReals, asset.outputPrecision)};");
}
}
});
asset.functions.AddRange(registry.names.Select(x => new FunctionPair(x, registry.sources[x])));
var collector = new PropertyCollector();
asset.nodeProperties = collector.properties;
foreach (var node in nodes)
{
node.CollectShaderProperties(collector, GenerationMode.ForReals);
}
asset.OnBeforeSerialize();
}
public void CanGetPermutationMapPerNode()
{
var previewNode = m_Graph.GetNodes <PreviewNode>().FirstOrDefault();
Assert.IsNotNull(previewNode, "Preview Node not in graph.");
var descendentNodes = new List <AbstractMaterialNode>();
NodeUtils.DepthFirstCollectNodesFromNode(descendentNodes, previewNode, NodeUtils.IncludeSelf.Include);
List <int>[] keywordPermutationsPerNode = new List <int> [descendentNodes.Count];
Assert.IsNotEmpty(descendentNodes, "No Nodes in graph.");
for (int i = 0; i < m_Collector.permutations.Count; i++)
{
var localNodes = ListPool <AbstractMaterialNode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(localNodes, previewNode, NodeUtils.IncludeSelf.Include, keywordPermutation: m_Collector.permutations[i]);
foreach (AbstractMaterialNode node in localNodes)
{
int nodeIndex = descendentNodes.IndexOf(node);
if (keywordPermutationsPerNode[nodeIndex] == null)
{
keywordPermutationsPerNode[nodeIndex] = new List <int>();
}
keywordPermutationsPerNode[nodeIndex].Add(i);
}
}
ShaderKeyword booleanAKeyword = m_Collector.keywords.Where(x => x.displayName == "Boolean A").FirstOrDefault();
ShaderKeyword booleanBKeyword = m_Collector.keywords.Where(x => x.displayName == "Boolean B").FirstOrDefault();
ShaderKeyword enumAKeyword = m_Collector.keywords.Where(x => x.displayName == "Enum A").FirstOrDefault();
ShaderKeyword enumBKeyword = m_Collector.keywords.Where(x => x.displayName == "Enum B").FirstOrDefault();
if (booleanAKeyword == null || booleanBKeyword == null || enumAKeyword == null || enumBKeyword == null)
{
Assert.Fail("One or more Keywords not in graph.");
}
var keywordNodes = m_Graph.GetNodes <KeywordNode>().ToList();
KeywordNode booleanANode = keywordNodes.Where(x => x.keyword == booleanAKeyword).FirstOrDefault();
KeywordNode booleanBNode = keywordNodes.Where(x => x.keyword == booleanBKeyword).FirstOrDefault();
KeywordNode enumANode = keywordNodes.Where(x => x.keyword == enumAKeyword).FirstOrDefault();
KeywordNode enumBNode = keywordNodes.Where(x => x.keyword == enumBKeyword).FirstOrDefault();
if (booleanANode == null || booleanBNode == null || enumANode == null || enumBNode == null)
{
Assert.Fail("One or more Keywords Nodes not in graph.");
}
int booleanAIndex = descendentNodes.IndexOf(booleanANode);
List <int> booleanAPermutations = keywordPermutationsPerNode[booleanAIndex];
Assert.AreEqual(24, booleanAPermutations.Count, "Boolean A had incorrect permutations.");
int booleanBIndex = descendentNodes.IndexOf(booleanBNode);
List <int> booleanBPermutations = keywordPermutationsPerNode[booleanBIndex];
Assert.AreEqual(48, booleanBPermutations.Count, "Boolean B had incorrect permutations.");
int enumAIndex = descendentNodes.IndexOf(enumANode);
List <int> enumAPermutations = keywordPermutationsPerNode[enumAIndex];
Assert.AreEqual(12, enumAPermutations.Count, "Enum A had incorrect permutations.");
int enumBIndex = descendentNodes.IndexOf(enumBNode);
List <int> enumBPermutations = keywordPermutationsPerNode[enumBIndex];
Assert.AreEqual(24, enumBPermutations.Count, "Enum B had incorrect permutations.");
}
static ShaderGraphVfxAsset GenerateVfxShaderGraphAsset(VfxMasterNode masterNode)
{
var nl = Environment.NewLine;
var indent = new string(' ', 4);
var asset = ScriptableObject.CreateInstance <ShaderGraphVfxAsset>();
var result = asset.compilationResult = new GraphCompilationResult();
var mode = GenerationMode.ForReals;
var graph = masterNode.owner;
asset.lit = masterNode.lit.isOn;
var assetGuid = masterNode.owner.assetGuid;
var assetPath = AssetDatabase.GUIDToAssetPath(assetGuid);
var hlslName = NodeUtils.GetHLSLSafeName(Path.GetFileNameWithoutExtension(assetPath));
var ports = new List <MaterialSlot>();
masterNode.GetInputSlots(ports);
var nodes = new List <AbstractMaterialNode>();
NodeUtils.DepthFirstCollectNodesFromNode(nodes, masterNode);
var bodySb = new ShaderStringBuilder(1);
var registry = new FunctionRegistry(new ShaderStringBuilder(), true);
foreach (var properties in graph.properties)
{
properties.ValidateConcretePrecision(graph.concretePrecision);
}
foreach (var node in nodes)
{
if (node is IGeneratesBodyCode bodyGenerator)
{
bodySb.currentNode = node;
bodyGenerator.GenerateNodeCode(bodySb, mode);
bodySb.ReplaceInCurrentMapping(PrecisionUtil.Token, node.concretePrecision.ToShaderString());
}
if (node is IGeneratesFunction generatesFunction)
{
registry.builder.currentNode = node;
generatesFunction.GenerateNodeFunction(registry, mode);
}
}
bodySb.currentNode = null;
var portNodeSets = new HashSet <AbstractMaterialNode> [ports.Count];
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
var port = ports[portIndex];
var nodeSet = new HashSet <AbstractMaterialNode>();
NodeUtils.CollectNodeSet(nodeSet, port);
portNodeSets[portIndex] = nodeSet;
}
var portPropertySets = new HashSet <Guid> [ports.Count];
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
portPropertySets[portIndex] = new HashSet <Guid>();
}
foreach (var node in nodes)
{
if (!(node is PropertyNode propertyNode))
{
continue;
}
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
var portNodeSet = portNodeSets[portIndex];
if (portNodeSet.Contains(node))
{
portPropertySets[portIndex].Add(propertyNode.propertyGuid);
}
}
}
var shaderProperties = new PropertyCollector();
foreach (var node in nodes)
{
node.CollectShaderProperties(shaderProperties, GenerationMode.ForReals);
}
asset.SetTextureInfos(shaderProperties.GetConfiguredTexutres());
var codeSnippets = new List <string>();
var portCodeIndices = new List <int> [ports.Count];
var sharedCodeIndices = new List <int>();
for (var i = 0; i < portCodeIndices.Length; i++)
{
portCodeIndices[i] = new List <int>();
}
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"#include \"Packages/com.unity.shadergraph/ShaderGraphLibrary/Functions.hlsl\"{nl}");
for (var registryIndex = 0; registryIndex < registry.names.Count; registryIndex++)
{
var name = registry.names[registryIndex];
var source = registry.sources[name];
var precision = source.nodes.First().concretePrecision;
var hasPrecisionMismatch = false;
var nodeNames = new HashSet <string>();
foreach (var node in source.nodes)
{
nodeNames.Add(node.name);
if (node.concretePrecision != precision)
{
hasPrecisionMismatch = true;
break;
}
}
if (hasPrecisionMismatch)
{
var message = new StringBuilder($"Precision mismatch for function {name}:");
foreach (var node in source.nodes)
{
message.AppendLine($"{node.name} ({node.guid}): {node.concretePrecision}");
}
throw new InvalidOperationException(message.ToString());
}
var code = source.code.Replace(PrecisionUtil.Token, precision.ToShaderString());
code = $"// Node: {string.Join(", ", nodeNames)}{nl}{code}";
var codeIndex = codeSnippets.Count;
codeSnippets.Add(code + nl);
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
var portNodeSet = portNodeSets[portIndex];
foreach (var node in source.nodes)
{
if (portNodeSet.Contains(node))
{
portCodeIndices[portIndex].Add(codeIndex);
break;
}
}
}
}
foreach (var property in graph.properties)
{
if (property.isExposable && property.generatePropertyBlock)
{
continue;
}
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
var portPropertySet = portPropertySets[portIndex];
if (portPropertySet.Contains(property.guid))
{
portCodeIndices[portIndex].Add(codeSnippets.Count);
}
}
codeSnippets.Add($"// Property: {property.displayName}{nl}{property.GetPropertyDeclarationString()}{nl}{nl}");
}
var inputStructName = $"SG_Input_{assetGuid}";
var outputStructName = $"SG_Output_{assetGuid}";
var evaluationFunctionName = $"SG_Evaluate_{assetGuid}";
#region Input Struct
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"struct {inputStructName}{nl}{{{nl}");
#region Requirements
var portRequirements = new ShaderGraphRequirements[ports.Count];
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
portRequirements[portIndex] = ShaderGraphRequirements.FromNodes(portNodeSets[portIndex].ToList(), ports[portIndex].stageCapability);
}
var portIndices = new List <int>();
portIndices.Capacity = ports.Count;
void AddRequirementsSnippet(Func <ShaderGraphRequirements, bool> predicate, string snippet)
{
portIndices.Clear();
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
if (predicate(portRequirements[portIndex]))
{
portIndices.Add(portIndex);
}
}
if (portIndices.Count > 0)
{
foreach (var portIndex in portIndices)
{
portCodeIndices[portIndex].Add(codeSnippets.Count);
}
codeSnippets.Add($"{indent}{snippet};{nl}");
}
}
void AddCoordinateSpaceSnippets(InterpolatorType interpolatorType, Func <ShaderGraphRequirements, NeededCoordinateSpace> selector)
{
foreach (var space in EnumInfo <CoordinateSpace> .values)
{
var neededSpace = space.ToNeededCoordinateSpace();
AddRequirementsSnippet(r => (selector(r) & neededSpace) > 0, $"float3 {space.ToVariableName(interpolatorType)}");
}
}
// TODO: Rework requirements system to make this better
AddCoordinateSpaceSnippets(InterpolatorType.Normal, r => r.requiresNormal);
AddCoordinateSpaceSnippets(InterpolatorType.Tangent, r => r.requiresTangent);
AddCoordinateSpaceSnippets(InterpolatorType.BiTangent, r => r.requiresBitangent);
AddCoordinateSpaceSnippets(InterpolatorType.ViewDirection, r => r.requiresViewDir);
AddCoordinateSpaceSnippets(InterpolatorType.Position, r => r.requiresPosition);
AddRequirementsSnippet(r => r.requiresVertexColor, $"float4 {ShaderGeneratorNames.VertexColor}");
AddRequirementsSnippet(r => r.requiresScreenPosition, $"float4 {ShaderGeneratorNames.ScreenPosition}");
AddRequirementsSnippet(r => r.requiresFaceSign, $"float4 {ShaderGeneratorNames.FaceSign}");
foreach (var uvChannel in EnumInfo <UVChannel> .values)
{
AddRequirementsSnippet(r => r.requiresMeshUVs.Contains(uvChannel), $"half4 {uvChannel.GetUVName()}");
}
AddRequirementsSnippet(r => r.requiresTime, $"float3 {ShaderGeneratorNames.TimeParameters}");
#endregion
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"}};{nl}{nl}");
#endregion
#region Output Struct
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"struct {outputStructName}{nl}{{");
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
var port = ports[portIndex];
portCodeIndices[portIndex].Add(codeSnippets.Count);
codeSnippets.Add($"{nl}{indent}{port.concreteValueType.ToShaderString(graph.concretePrecision)} {port.shaderOutputName}_{port.id};");
}
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"{nl}}};{nl}{nl}");
#endregion
#region Graph Function
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"{outputStructName} {evaluationFunctionName}({nl}{indent}{inputStructName} IN");
var inputProperties = new List <AbstractShaderProperty>();
var portPropertyIndices = new List <int> [ports.Count];
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
portPropertyIndices[portIndex] = new List <int>();
}
foreach (var property in graph.properties)
{
if (!property.isExposable || !property.generatePropertyBlock)
{
continue;
}
var propertyIndex = inputProperties.Count;
var codeIndex = codeSnippets.Count;
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
var portPropertySet = portPropertySets[portIndex];
if (portPropertySet.Contains(property.guid))
{
portCodeIndices[portIndex].Add(codeIndex);
portPropertyIndices[portIndex].Add(propertyIndex);
}
}
inputProperties.Add(property);
codeSnippets.Add($",{nl}{indent}/* Property: {property.displayName} */ {property.GetPropertyAsArgumentString()}");
}
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"){nl}{{");
#region Node Code
for (var mappingIndex = 0; mappingIndex < bodySb.mappings.Count; mappingIndex++)
{
var mapping = bodySb.mappings[mappingIndex];
var code = bodySb.ToString(mapping.startIndex, mapping.count);
if (string.IsNullOrWhiteSpace(code))
{
continue;
}
code = $"{nl}{indent}// Node: {mapping.node.name}{nl}{code}";
var codeIndex = codeSnippets.Count;
codeSnippets.Add(code);
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
var portNodeSet = portNodeSets[portIndex];
if (portNodeSet.Contains(mapping.node))
{
portCodeIndices[portIndex].Add(codeIndex);
}
}
}
#endregion
#region Output Mapping
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"{nl}{indent}// {masterNode.name}{nl}{indent}{outputStructName} OUT;{nl}");
// Output mapping
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
var port = ports[portIndex];
portCodeIndices[portIndex].Add(codeSnippets.Count);
codeSnippets.Add($"{indent}OUT.{port.shaderOutputName}_{port.id} = {masterNode.GetSlotValue(port.id, GenerationMode.ForReals, graph.concretePrecision)};{nl}");
}
#endregion
// Function end
sharedCodeIndices.Add(codeSnippets.Count);
codeSnippets.Add($"{indent}return OUT;{nl}}}{nl}");
#endregion
result.codeSnippets = codeSnippets.ToArray();
result.sharedCodeIndices = sharedCodeIndices.ToArray();
result.outputCodeIndices = new IntArray[ports.Count];
for (var i = 0; i < ports.Count; i++)
{
result.outputCodeIndices[i] = portCodeIndices[i].ToArray();
}
asset.SetOutputs(ports.Select((t, i) => new OutputMetadata(i, t.shaderOutputName, t.id)).ToArray());
asset.evaluationFunctionName = evaluationFunctionName;
asset.inputStructName = inputStructName;
asset.outputStructName = outputStructName;
asset.portRequirements = portRequirements;
asset.concretePrecision = graph.concretePrecision;
asset.SetProperties(inputProperties);
asset.outputPropertyIndices = new IntArray[ports.Count];
for (var portIndex = 0; portIndex < ports.Count; portIndex++)
{
asset.outputPropertyIndices[portIndex] = portPropertyIndices[portIndex].ToArray();
}
return(asset);
}
static string GetShaderPassFromTemplate(string template, IMasterNode iMasterNode, Pass pass, GenerationMode mode, SurfaceMaterialOptions materialOptions)
{
// ----------------------------------------------------- //
// SETUP //
// ----------------------------------------------------- //
AbstractMaterialNode masterNode = iMasterNode as AbstractMaterialNode;
// -------------------------------------
// String builders
var shaderProperties = new PropertyCollector();
var shaderKeywords = new KeywordCollector();
var shaderPropertyUniforms = new ShaderStringBuilder(1);
var shaderKeywordDeclarations = new ShaderStringBuilder(1);
var functionBuilder = new ShaderStringBuilder(1);
var functionRegistry = new FunctionRegistry(functionBuilder);
var defines = new ShaderStringBuilder(1);
var graph = new ShaderStringBuilder(0);
var vertexDescriptionInputStruct = new ShaderStringBuilder(1);
var vertexDescriptionStruct = new ShaderStringBuilder(1);
var vertexDescriptionFunction = new ShaderStringBuilder(1);
var surfaceDescriptionInputStruct = new ShaderStringBuilder(1);
var surfaceDescriptionStruct = new ShaderStringBuilder(1);
var surfaceDescriptionFunction = new ShaderStringBuilder(1);
var vertexInputStruct = new ShaderStringBuilder(1);
var vertexOutputStruct = new ShaderStringBuilder(2);
var vertexShader = new ShaderStringBuilder(2);
var vertexShaderDescriptionInputs = new ShaderStringBuilder(2);
var vertexShaderOutputs = new ShaderStringBuilder(2);
var pixelShader = new ShaderStringBuilder(2);
var pixelShaderSurfaceInputs = new ShaderStringBuilder(2);
var pixelShaderSurfaceRemap = new ShaderStringBuilder(2);
// -------------------------------------
// Get Slot and Node lists per stage
var vertexSlots = pass.VertexShaderSlots.Select(masterNode.FindSlot <MaterialSlot>).ToList();
var vertexNodes = ListPool <AbstractMaterialNode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(vertexNodes, masterNode, NodeUtils.IncludeSelf.Include, pass.VertexShaderSlots);
var pixelSlots = pass.PixelShaderSlots.Select(masterNode.FindSlot <MaterialSlot>).ToList();
var pixelNodes = ListPool <AbstractMaterialNode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(pixelNodes, masterNode, NodeUtils.IncludeSelf.Include, pass.PixelShaderSlots);
// -------------------------------------
// Get Requirements
var vertexRequirements = ShaderGraphRequirements.FromNodes(vertexNodes, ShaderStageCapability.Vertex, false);
var pixelRequirements = ShaderGraphRequirements.FromNodes(pixelNodes, ShaderStageCapability.Fragment);
var graphRequirements = pixelRequirements.Union(vertexRequirements);
var surfaceRequirements = ShaderGraphRequirements.FromNodes(pixelNodes, ShaderStageCapability.Fragment, false);
var modelRequirements = pass.Requirements;
// ----------------------------------------------------- //
// START SHADER GENERATION //
// ----------------------------------------------------- //
// -------------------------------------
// Calculate material options
var blendingBuilder = new ShaderStringBuilder(1);
var cullingBuilder = new ShaderStringBuilder(1);
var zTestBuilder = new ShaderStringBuilder(1);
var zWriteBuilder = new ShaderStringBuilder(1);
materialOptions.GetBlend(blendingBuilder);
materialOptions.GetCull(cullingBuilder);
materialOptions.GetDepthTest(zTestBuilder);
materialOptions.GetDepthWrite(zWriteBuilder);
// -------------------------------------
// Generate defines
pass.OnGeneratePass(iMasterNode, graphRequirements);
foreach (string define in pass.ExtraDefines)
{
defines.AppendLine(define);
}
// ----------------------------------------------------- //
// KEYWORDS //
// ----------------------------------------------------- //
// -------------------------------------
// Get keyword permutations
masterNode.owner.CollectShaderKeywords(shaderKeywords, mode);
// Track permutation indices for all nodes
List <int>[] keywordPermutationsPerVertexNode = new List <int> [vertexNodes.Count];
List <int>[] keywordPermutationsPerPixelNode = new List <int> [pixelNodes.Count];
// -------------------------------------
// Evaluate all permutations
for (int i = 0; i < shaderKeywords.permutations.Count; i++)
{
// Get active nodes for this permutation
var localVertexNodes = ListPool <AbstractMaterialNode> .Get();
var localPixelNodes = ListPool <AbstractMaterialNode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(localVertexNodes, masterNode, NodeUtils.IncludeSelf.Include, pass.VertexShaderSlots, shaderKeywords.permutations[i]);
NodeUtils.DepthFirstCollectNodesFromNode(localPixelNodes, masterNode, NodeUtils.IncludeSelf.Include, pass.PixelShaderSlots, shaderKeywords.permutations[i]);
// Track each vertex node in this permutation
foreach (AbstractMaterialNode vertexNode in localVertexNodes)
{
int nodeIndex = vertexNodes.IndexOf(vertexNode);
if (keywordPermutationsPerVertexNode[nodeIndex] == null)
{
keywordPermutationsPerVertexNode[nodeIndex] = new List <int>();
}
keywordPermutationsPerVertexNode[nodeIndex].Add(i);
}
// Track each pixel node in this permutation
foreach (AbstractMaterialNode pixelNode in localPixelNodes)
{
int nodeIndex = pixelNodes.IndexOf(pixelNode);
if (keywordPermutationsPerPixelNode[nodeIndex] == null)
{
keywordPermutationsPerPixelNode[nodeIndex] = new List <int>();
}
keywordPermutationsPerPixelNode[nodeIndex].Add(i);
}
}
// ----------------------------------------------------- //
// START VERTEX DESCRIPTION //
// ----------------------------------------------------- //
// -------------------------------------
// Generate Input structure for Vertex Description function
// TODO - Vertex Description Input requirements are needed to exclude intermediate translation spaces
vertexDescriptionInputStruct.AppendLine("struct VertexDescriptionInputs");
using (vertexDescriptionInputStruct.BlockSemicolonScope())
{
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(vertexRequirements.requiresNormal, InterpolatorType.Normal, vertexDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(vertexRequirements.requiresTangent, InterpolatorType.Tangent, vertexDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(vertexRequirements.requiresBitangent, InterpolatorType.BiTangent, vertexDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(vertexRequirements.requiresViewDir, InterpolatorType.ViewDirection, vertexDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(vertexRequirements.requiresPosition, InterpolatorType.Position, vertexDescriptionInputStruct);
if (vertexRequirements.requiresVertexColor)
{
vertexDescriptionInputStruct.AppendLine("float4 {0};", ShaderGeneratorNames.VertexColor);
}
if (vertexRequirements.requiresScreenPosition)
{
vertexDescriptionInputStruct.AppendLine("float4 {0};", ShaderGeneratorNames.ScreenPosition);
}
foreach (var channel in vertexRequirements.requiresMeshUVs.Distinct())
{
vertexDescriptionInputStruct.AppendLine("half4 {0};", channel.GetUVName());
}
if (vertexRequirements.requiresTime)
{
vertexDescriptionInputStruct.AppendLine("float3 {0};", ShaderGeneratorNames.TimeParameters);
}
}
// -------------------------------------
// Generate Output structure for Vertex Description function
GraphUtil.GenerateVertexDescriptionStruct(vertexDescriptionStruct, vertexSlots);
// -------------------------------------
// Generate Vertex Description function
GraphUtil.GenerateVertexDescriptionFunction(
masterNode.owner as GraphData,
vertexDescriptionFunction,
functionRegistry,
shaderProperties,
shaderKeywords,
mode,
masterNode,
vertexNodes,
keywordPermutationsPerVertexNode,
vertexSlots);
// ----------------------------------------------------- //
// START SURFACE DESCRIPTION //
// ----------------------------------------------------- //
// -------------------------------------
// Generate Input structure for Surface Description function
// Surface Description Input requirements are needed to exclude intermediate translation spaces
surfaceDescriptionInputStruct.AppendLine("struct SurfaceDescriptionInputs");
using (surfaceDescriptionInputStruct.BlockSemicolonScope())
{
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(surfaceRequirements.requiresNormal, InterpolatorType.Normal, surfaceDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(surfaceRequirements.requiresTangent, InterpolatorType.Tangent, surfaceDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(surfaceRequirements.requiresBitangent, InterpolatorType.BiTangent, surfaceDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(surfaceRequirements.requiresViewDir, InterpolatorType.ViewDirection, surfaceDescriptionInputStruct);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(surfaceRequirements.requiresPosition, InterpolatorType.Position, surfaceDescriptionInputStruct);
if (surfaceRequirements.requiresVertexColor)
{
surfaceDescriptionInputStruct.AppendLine("float4 {0};", ShaderGeneratorNames.VertexColor);
}
if (surfaceRequirements.requiresScreenPosition)
{
surfaceDescriptionInputStruct.AppendLine("float4 {0};", ShaderGeneratorNames.ScreenPosition);
}
if (surfaceRequirements.requiresFaceSign)
{
surfaceDescriptionInputStruct.AppendLine("float {0};", ShaderGeneratorNames.FaceSign);
}
foreach (var channel in surfaceRequirements.requiresMeshUVs.Distinct())
{
surfaceDescriptionInputStruct.AppendLine("half4 {0};", channel.GetUVName());
}
if (surfaceRequirements.requiresTime)
{
surfaceDescriptionInputStruct.AppendLine("float3 {0};", ShaderGeneratorNames.TimeParameters);
}
}
// -------------------------------------
// Generate Output structure for Surface Description function
GraphUtil.GenerateSurfaceDescriptionStruct(surfaceDescriptionStruct, pixelSlots);
// -------------------------------------
// Generate Surface Description function
GraphUtil.GenerateSurfaceDescriptionFunction(
pixelNodes,
keywordPermutationsPerPixelNode,
masterNode,
masterNode.owner as GraphData,
surfaceDescriptionFunction,
functionRegistry,
shaderProperties,
shaderKeywords,
mode,
"PopulateSurfaceData",
"SurfaceDescription",
null,
pixelSlots);
// ----------------------------------------------------- //
// GENERATE VERTEX > PIXEL PIPELINE //
// ----------------------------------------------------- //
// -------------------------------------
// Keyword declarations
shaderKeywords.GetKeywordsDeclaration(shaderKeywordDeclarations, mode);
// -------------------------------------
// Property uniforms
shaderProperties.GetPropertiesDeclaration(shaderPropertyUniforms, mode, masterNode.owner.concretePrecision);
// -------------------------------------
// Generate Input structure for Vertex shader
GraphUtil.GenerateApplicationVertexInputs(vertexRequirements.Union(pixelRequirements.Union(modelRequirements)), vertexInputStruct);
// -------------------------------------
// Generate standard transformations
// This method ensures all required transform data is available in vertex and pixel stages
ShaderGenerator.GenerateStandardTransforms(
3,
10,
vertexOutputStruct,
vertexShader,
vertexShaderDescriptionInputs,
vertexShaderOutputs,
pixelShader,
pixelShaderSurfaceInputs,
pixelRequirements,
surfaceRequirements,
modelRequirements,
vertexRequirements,
CoordinateSpace.World);
// -------------------------------------
// Generate pixel shader surface remap
foreach (var slot in pixelSlots)
{
pixelShaderSurfaceRemap.AppendLine("{0} = surf.{0};", slot.shaderOutputName);
}
// -------------------------------------
// Extra pixel shader work
var faceSign = new ShaderStringBuilder();
if (pixelRequirements.requiresFaceSign)
{
faceSign.AppendLine(", half FaceSign : VFACE");
}
// ----------------------------------------------------- //
// FINALIZE //
// ----------------------------------------------------- //
// -------------------------------------
// Combine Graph sections
graph.AppendLines(shaderKeywordDeclarations.ToString());
graph.AppendLines(shaderPropertyUniforms.ToString());
graph.AppendLine(vertexDescriptionInputStruct.ToString());
graph.AppendLine(surfaceDescriptionInputStruct.ToString());
graph.AppendLine(functionBuilder.ToString());
graph.AppendLine(vertexDescriptionStruct.ToString());
graph.AppendLine(vertexDescriptionFunction.ToString());
graph.AppendLine(surfaceDescriptionStruct.ToString());
graph.AppendLine(surfaceDescriptionFunction.ToString());
graph.AppendLine(vertexInputStruct.ToString());
// -------------------------------------
// Generate final subshader
var resultPass = template.Replace("${Tags}", string.Empty);
resultPass = resultPass.Replace("${Blending}", blendingBuilder.ToString());
resultPass = resultPass.Replace("${Culling}", cullingBuilder.ToString());
resultPass = resultPass.Replace("${ZTest}", zTestBuilder.ToString());
resultPass = resultPass.Replace("${ZWrite}", zWriteBuilder.ToString());
resultPass = resultPass.Replace("${Defines}", defines.ToString());
resultPass = resultPass.Replace("${Graph}", graph.ToString());
resultPass = resultPass.Replace("${VertexOutputStruct}", vertexOutputStruct.ToString());
resultPass = resultPass.Replace("${VertexShader}", vertexShader.ToString());
resultPass = resultPass.Replace("${VertexShaderDescriptionInputs}", vertexShaderDescriptionInputs.ToString());
resultPass = resultPass.Replace("${VertexShaderOutputs}", vertexShaderOutputs.ToString());
resultPass = resultPass.Replace("${FaceSign}", faceSign.ToString());
resultPass = resultPass.Replace("${PixelShader}", pixelShader.ToString());
resultPass = resultPass.Replace("${PixelShaderSurfaceInputs}", pixelShaderSurfaceInputs.ToString());
resultPass = resultPass.Replace("${PixelShaderSurfaceRemap}", pixelShaderSurfaceRemap.ToString());
return(resultPass);
}
public static GenerationResults GetShader(this GraphData graph, AbstractMaterialNode node, GenerationMode mode, string name)
{
// ----------------------------------------------------- //
// SETUP //
// ----------------------------------------------------- //
// -------------------------------------
// String builders
var finalShader = new ShaderStringBuilder();
var results = new GenerationResults();
var shaderProperties = new PropertyCollector();
var shaderKeywords = new KeywordCollector();
var shaderPropertyUniforms = new ShaderStringBuilder();
var shaderKeywordDeclarations = new ShaderStringBuilder();
var shaderKeywordPermutations = new ShaderStringBuilder(1);
var functionBuilder = new ShaderStringBuilder();
var functionRegistry = new FunctionRegistry(functionBuilder);
var vertexDescriptionFunction = new ShaderStringBuilder(0);
var surfaceDescriptionInputStruct = new ShaderStringBuilder(0);
var surfaceDescriptionStruct = new ShaderStringBuilder(0);
var surfaceDescriptionFunction = new ShaderStringBuilder(0);
var vertexInputs = new ShaderStringBuilder(0);
graph.CollectShaderKeywords(shaderKeywords, mode);
if (graph.GetKeywordPermutationCount() > ShaderGraphPreferences.variantLimit)
{
graph.AddValidationError(node.tempId, ShaderKeyword.kVariantLimitWarning, Rendering.ShaderCompilerMessageSeverity.Error);
results.configuredTextures = shaderProperties.GetConfiguredTexutres();
results.shader = string.Empty;
return(results);
}
// -------------------------------------
// Get Slot and Node lists
var activeNodeList = ListPool <AbstractMaterialNode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(activeNodeList, node);
var slots = new List <MaterialSlot>();
if (node is IMasterNode || node is SubGraphOutputNode)
{
slots.AddRange(node.GetInputSlots <MaterialSlot>());
}
else
{
var outputSlots = node.GetOutputSlots <MaterialSlot>().ToList();
if (outputSlots.Count > 0)
{
slots.Add(outputSlots[0]);
}
}
// -------------------------------------
// Get Requirements
var requirements = ShaderGraphRequirements.FromNodes(activeNodeList, ShaderStageCapability.Fragment);
// ----------------------------------------------------- //
// KEYWORDS //
// ----------------------------------------------------- //
// -------------------------------------
// Get keyword permutations
graph.CollectShaderKeywords(shaderKeywords, mode);
// Track permutation indicies for all nodes and requirements
List <int>[] keywordPermutationsPerNode = new List <int> [activeNodeList.Count];
// -------------------------------------
// Evaluate all permutations
for (int i = 0; i < shaderKeywords.permutations.Count; i++)
{
// Get active nodes for this permutation
var localNodes = ListPool <AbstractMaterialNode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(localNodes, node, keywordPermutation: shaderKeywords.permutations[i]);
// Track each pixel node in this permutation
foreach (AbstractMaterialNode pixelNode in localNodes)
{
int nodeIndex = activeNodeList.IndexOf(pixelNode);
if (keywordPermutationsPerNode[nodeIndex] == null)
{
keywordPermutationsPerNode[nodeIndex] = new List <int>();
}
keywordPermutationsPerNode[nodeIndex].Add(i);
}
// Get active requirements for this permutation
var localSurfaceRequirements = ShaderGraphRequirements.FromNodes(localNodes, ShaderStageCapability.Fragment, false);
var localPixelRequirements = ShaderGraphRequirements.FromNodes(localNodes, ShaderStageCapability.Fragment);
}
// ----------------------------------------------------- //
// START VERTEX DESCRIPTION //
// ----------------------------------------------------- //
// -------------------------------------
// Generate Vertex Description function
vertexDescriptionFunction.AppendLine("GraphVertexInput PopulateVertexData(GraphVertexInput v)");
using (vertexDescriptionFunction.BlockScope())
{
vertexDescriptionFunction.AppendLine("return v;");
}
// ----------------------------------------------------- //
// START SURFACE DESCRIPTION //
// ----------------------------------------------------- //
// -------------------------------------
// Generate Input structure for Surface Description function
// Surface Description Input requirements are needed to exclude intermediate translation spaces
GenerateSurfaceInputStruct(surfaceDescriptionInputStruct, requirements, "SurfaceDescriptionInputs");
results.previewMode = PreviewMode.Preview2D;
foreach (var pNode in activeNodeList)
{
if (pNode.previewMode == PreviewMode.Preview3D)
{
results.previewMode = PreviewMode.Preview3D;
break;
}
}
// -------------------------------------
// Generate Output structure for Surface Description function
GenerateSurfaceDescriptionStruct(surfaceDescriptionStruct, slots, useIdsInNames: !(node is IMasterNode));
// -------------------------------------
// Generate Surface Description function
GenerateSurfaceDescriptionFunction(
activeNodeList,
keywordPermutationsPerNode,
node,
graph,
surfaceDescriptionFunction,
functionRegistry,
shaderProperties,
shaderKeywords,
mode,
outputIdProperty: results.outputIdProperty);
// ----------------------------------------------------- //
// GENERATE VERTEX > PIXEL PIPELINE //
// ----------------------------------------------------- //
// -------------------------------------
// Keyword declarations
shaderKeywords.GetKeywordsDeclaration(shaderKeywordDeclarations, mode);
// -------------------------------------
// Property uniforms
shaderProperties.GetPropertiesDeclaration(shaderPropertyUniforms, mode, graph.concretePrecision);
// -------------------------------------
// Generate Input structure for Vertex shader
GenerateApplicationVertexInputs(requirements, vertexInputs);
// ----------------------------------------------------- //
// FINALIZE //
// ----------------------------------------------------- //
// -------------------------------------
// Build final shader
finalShader.AppendLine(@"Shader ""{0}""", name);
using (finalShader.BlockScope())
{
SubShaderGenerator.GeneratePropertiesBlock(finalShader, shaderProperties, shaderKeywords, mode);
finalShader.AppendNewLine();
finalShader.AppendLine(@"HLSLINCLUDE");
finalShader.AppendLine(@"#include ""Assets/Scripts/URP/com.unity.render-pipelines.core/ShaderLibrary/Common.hlsl""");
finalShader.AppendLine(@"#include ""Assets/Scripts/URP/com.unity.render-pipelines.core/ShaderLibrary/Packing.hlsl""");
finalShader.AppendLine(@"#include ""Assets/Scripts/URP/com.unity.render-pipelines.core/ShaderLibrary/NormalSurfaceGradient.hlsl""");
finalShader.AppendLine(@"#include ""Assets/Scripts/URP/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl""");
finalShader.AppendLine(@"#include ""Assets/Scripts/URP/com.unity.render-pipelines.core/ShaderLibrary/UnityInstancing.hlsl""");
finalShader.AppendLine(@"#include ""Assets/Scripts/URP/com.unity.render-pipelines.core/ShaderLibrary/EntityLighting.hlsl""");
finalShader.AppendLine(@"#include ""Assets/Scripts/URP/com.unity.shadergraph/ShaderGraphLibrary/ShaderVariables.hlsl""");
finalShader.AppendLine(@"#include ""Assets/Scripts/URP/com.unity.shadergraph/ShaderGraphLibrary/ShaderVariablesFunctions.hlsl""");
finalShader.AppendLine(@"#include ""Assets/Scripts/URP/com.unity.shadergraph/ShaderGraphLibrary/Functions.hlsl""");
finalShader.AppendLines(shaderKeywordDeclarations.ToString());
finalShader.AppendLine(@"#define SHADERGRAPH_PREVIEW 1");
finalShader.AppendNewLine();
finalShader.AppendLines(shaderKeywordPermutations.ToString());
finalShader.AppendLines(shaderPropertyUniforms.ToString());
finalShader.AppendNewLine();
finalShader.AppendLines(surfaceDescriptionInputStruct.ToString());
finalShader.AppendNewLine();
finalShader.Concat(functionBuilder);
finalShader.AppendNewLine();
finalShader.AppendLines(surfaceDescriptionStruct.ToString());
finalShader.AppendNewLine();
finalShader.AppendLines(surfaceDescriptionFunction.ToString());
finalShader.AppendNewLine();
finalShader.AppendLines(vertexInputs.ToString());
finalShader.AppendNewLine();
finalShader.AppendLines(vertexDescriptionFunction.ToString());
finalShader.AppendNewLine();
finalShader.AppendLine(@"ENDHLSL");
finalShader.AppendLines(ShaderGenerator.GetPreviewSubShader(node, requirements));
ListPool <AbstractMaterialNode> .Release(activeNodeList);
}
// -------------------------------------
// Finalize
results.configuredTextures = shaderProperties.GetConfiguredTexutres();
ShaderSourceMap sourceMap;
results.shader = finalShader.ToString(out sourceMap);
results.sourceMap = sourceMap;
return(results);
}
public static GenerationResults GetShader(this AbstractMaterialGraph graph, AbstractMaterialNode node, GenerationMode mode, string name)
{
var results = new GenerationResults();
bool isUber = node == null;
var vertexInputs = new ShaderGenerator();
var vertexShader = new ShaderGenerator();
var surfaceDescriptionFunction = new ShaderGenerator();
var surfaceDescriptionStruct = new ShaderGenerator();
var functionBuilder = new ShaderStringBuilder();
var functionRegistry = new FunctionRegistry(functionBuilder);
var surfaceInputs = new ShaderGenerator();
surfaceInputs.AddShaderChunk("struct SurfaceInputs{", false);
surfaceInputs.Indent();
var activeNodeList = ListPool <INode> .Get();
if (isUber)
{
var unmarkedNodes = graph.GetNodes <INode>().Where(x => !(x is IMasterNode)).ToDictionary(x => x.guid);
while (unmarkedNodes.Any())
{
var unmarkedNode = unmarkedNodes.FirstOrDefault();
Visit(activeNodeList, unmarkedNodes, unmarkedNode.Value);
}
}
else
{
NodeUtils.DepthFirstCollectNodesFromNode(activeNodeList, node);
}
var requirements = ShaderGraphRequirements.FromNodes(activeNodeList);
GenerateApplicationVertexInputs(requirements, vertexInputs);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresNormal, InterpolatorType.Normal, surfaceInputs);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresTangent, InterpolatorType.Tangent, surfaceInputs);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresBitangent, InterpolatorType.BiTangent, surfaceInputs);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresViewDir, InterpolatorType.ViewDirection, surfaceInputs);
ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresPosition, InterpolatorType.Position, surfaceInputs);
if (requirements.requiresVertexColor)
{
surfaceInputs.AddShaderChunk(String.Format("float4 {0};", ShaderGeneratorNames.VertexColor), false);
}
if (requirements.requiresScreenPosition)
{
surfaceInputs.AddShaderChunk(String.Format("float4 {0};", ShaderGeneratorNames.ScreenPosition), false);
}
results.previewMode = PreviewMode.Preview3D;
if (!isUber)
{
foreach (var pNode in activeNodeList.OfType <AbstractMaterialNode>())
{
if (pNode.previewMode == PreviewMode.Preview3D)
{
results.previewMode = PreviewMode.Preview3D;
break;
}
}
}
foreach (var channel in requirements.requiresMeshUVs.Distinct())
{
surfaceInputs.AddShaderChunk(String.Format("half4 {0};", channel.GetUVName()), false);
}
surfaceInputs.Deindent();
surfaceInputs.AddShaderChunk("};", false);
vertexShader.AddShaderChunk("GraphVertexInput PopulateVertexData(GraphVertexInput v){", false);
vertexShader.Indent();
vertexShader.AddShaderChunk("return v;", false);
vertexShader.Deindent();
vertexShader.AddShaderChunk("}", false);
var slots = new List <MaterialSlot>();
foreach (var activeNode in isUber ? activeNodeList.Where(n => ((AbstractMaterialNode)n).hasPreview) : ((INode)node).ToEnumerable())
{
if (activeNode is IMasterNode)
{
slots.AddRange(activeNode.GetInputSlots <MaterialSlot>());
}
else
{
slots.AddRange(activeNode.GetOutputSlots <MaterialSlot>());
}
}
GenerateSurfaceDescriptionStruct(surfaceDescriptionStruct, slots, !isUber);
var shaderProperties = new PropertyCollector();
results.outputIdProperty = new Vector1ShaderProperty
{
displayName = "OutputId",
generatePropertyBlock = false,
value = -1
};
if (isUber)
{
shaderProperties.AddShaderProperty(results.outputIdProperty);
}
GenerateSurfaceDescription(
activeNodeList,
node,
graph,
surfaceDescriptionFunction,
functionRegistry,
shaderProperties,
requirements,
mode,
outputIdProperty: results.outputIdProperty);
var finalBuilder = new ShaderStringBuilder();
finalBuilder.AppendLine(@"Shader ""{0}""", name);
using (finalBuilder.BlockScope())
{
finalBuilder.AppendLine("Properties");
using (finalBuilder.BlockScope())
{
finalBuilder.AppendLines(shaderProperties.GetPropertiesBlock(0));
}
finalBuilder.AppendLine(@"HLSLINCLUDE");
finalBuilder.AppendLine("#define USE_LEGACY_UNITY_MATRIX_VARIABLES");
finalBuilder.AppendLine(@"#include ""CoreRP/ShaderLibrary/Common.hlsl""");
finalBuilder.AppendLine(@"#include ""CoreRP/ShaderLibrary/Packing.hlsl""");
finalBuilder.AppendLine(@"#include ""CoreRP/ShaderLibrary/Color.hlsl""");
finalBuilder.AppendLine(@"#include ""CoreRP/ShaderLibrary/UnityInstancing.hlsl""");
finalBuilder.AppendLine(@"#include ""CoreRP/ShaderLibrary/EntityLighting.hlsl""");
finalBuilder.AppendLine(@"#include ""ShaderGraphLibrary/ShaderVariables.hlsl""");
finalBuilder.AppendLine(@"#include ""ShaderGraphLibrary/ShaderVariablesFunctions.hlsl""");
finalBuilder.AppendLine(@"#include ""ShaderGraphLibrary/Functions.hlsl""");
finalBuilder.AppendLines(shaderProperties.GetPropertiesDeclaration(0));
finalBuilder.AppendLines(surfaceInputs.GetShaderString(0));
finalBuilder.Concat(functionBuilder);
finalBuilder.AppendLines(vertexInputs.GetShaderString(0));
finalBuilder.AppendLines(surfaceDescriptionStruct.GetShaderString(0));
finalBuilder.AppendLines(vertexShader.GetShaderString(0));
finalBuilder.AppendLines(surfaceDescriptionFunction.GetShaderString(0));
finalBuilder.AppendLine(@"ENDHLSL");
finalBuilder.AppendLines(ShaderGenerator.GetPreviewSubShader(node, requirements));
ListPool <INode> .Release(activeNodeList);
}
results.configuredTextures = shaderProperties.GetConfiguredTexutres();
ShaderSourceMap sourceMap;
results.shader = finalBuilder.ToString(out sourceMap);
results.sourceMap = sourceMap;
return(results);
}
static void ProcessSubGraph(SubGraphAsset asset, GraphData graph)
{
var registry = new FunctionRegistry(new ShaderStringBuilder(), true);
registry.names.Clear();
asset.functions.Clear();
asset.isValid = true;
graph.OnEnable();
graph.messageManager.ClearAll();
graph.ValidateGraph();
var assetPath = AssetDatabase.GUIDToAssetPath(asset.assetGuid);
asset.hlslName = NodeUtils.GetHLSLSafeName(Path.GetFileNameWithoutExtension(assetPath));
asset.inputStructName = $"Bindings_{asset.hlslName}_{asset.assetGuid}";
asset.functionName = $"SG_{asset.hlslName}_{asset.assetGuid}";
asset.path = graph.path;
var outputNode = graph.outputNode;
var outputSlots = PooledList <MaterialSlot> .Get();
outputNode.GetInputSlots(outputSlots);
List <AbstractMaterialNode> nodes = new List <AbstractMaterialNode>();
NodeUtils.DepthFirstCollectNodesFromNode(nodes, outputNode);
asset.effectiveShaderStage = ShaderStageCapability.All;
foreach (var slot in outputSlots)
{
var stage = NodeUtils.GetEffectiveShaderStageCapability(slot, true);
if (stage != ShaderStageCapability.All)
{
asset.effectiveShaderStage = stage;
break;
}
}
asset.vtFeedbackVariables = VirtualTexturingFeedbackUtils.GetFeedbackVariables(outputNode as SubGraphOutputNode);
asset.requirements = ShaderGraphRequirements.FromNodes(nodes, asset.effectiveShaderStage, false);
asset.graphPrecision = graph.concretePrecision;
asset.outputPrecision = outputNode.concretePrecision;
asset.previewMode = graph.previewMode;
GatherDescendentsFromGraph(new GUID(asset.assetGuid), out var containsCircularDependency, out var descendents);
asset.descendents.AddRange(descendents.Select(g => g.ToString()));
asset.descendents.Sort(); // ensure deterministic order
var childrenSet = new HashSet <string>();
var anyErrors = false;
foreach (var node in nodes)
{
if (node is SubGraphNode subGraphNode)
{
var subGraphGuid = subGraphNode.subGraphGuid;
childrenSet.Add(subGraphGuid);
}
if (node.hasError)
{
anyErrors = true;
}
asset.children = childrenSet.ToList();
asset.children.Sort(); // ensure deterministic order
}
if (!anyErrors && containsCircularDependency)
{
Debug.LogError($"Error in Graph at {assetPath}: Sub Graph contains a circular dependency.", asset);
anyErrors = true;
}
if (anyErrors)
{
asset.isValid = false;
registry.ProvideFunction(asset.functionName, sb => { });
return;
}
foreach (var node in nodes)
{
if (node is IGeneratesFunction generatesFunction)
{
registry.builder.currentNode = node;
generatesFunction.GenerateNodeFunction(registry, GenerationMode.ForReals);
registry.builder.ReplaceInCurrentMapping(PrecisionUtil.Token, node.concretePrecision.ToShaderString());
}
}
// provide top level subgraph function
registry.ProvideFunction(asset.functionName, sb =>
{
GenerationUtils.GenerateSurfaceInputStruct(sb, asset.requirements, asset.inputStructName);
sb.AppendNewLine();
// Generate arguments... first INPUTS
var arguments = new List <string>();
foreach (var prop in graph.properties)
{
prop.ValidateConcretePrecision(asset.graphPrecision);
arguments.Add(prop.GetPropertyAsArgumentString());
}
// now pass surface inputs
arguments.Add(string.Format("{0} IN", asset.inputStructName));
// Now generate outputs
foreach (MaterialSlot output in outputSlots)
{
arguments.Add($"out {output.concreteValueType.ToShaderString(asset.outputPrecision)} {output.shaderOutputName}_{output.id}");
}
// Vt Feedback arguments
foreach (var output in asset.vtFeedbackVariables)
{
arguments.Add($"out {ConcreteSlotValueType.Vector4.ToShaderString(ConcretePrecision.Single)} {output}_out");
}
// Create the function prototype from the arguments
sb.AppendLine("void {0}({1})"
, asset.functionName
, arguments.Aggregate((current, next) => $"{current}, {next}"));
// now generate the function
using (sb.BlockScope())
{
// Just grab the body from the active nodes
foreach (var node in nodes)
{
if (node is IGeneratesBodyCode generatesBodyCode)
{
sb.currentNode = node;
generatesBodyCode.GenerateNodeCode(sb, GenerationMode.ForReals);
sb.ReplaceInCurrentMapping(PrecisionUtil.Token, node.concretePrecision.ToShaderString());
}
}
foreach (var slot in outputSlots)
{
sb.AppendLine($"{slot.shaderOutputName}_{slot.id} = {outputNode.GetSlotValue(slot.id, GenerationMode.ForReals, asset.outputPrecision)};");
}
foreach (var slot in asset.vtFeedbackVariables)
{
sb.AppendLine($"{slot}_out = {slot};");
}
}
});
asset.functions.AddRange(registry.names.Select(x => new FunctionPair(x, registry.sources[x].code)));
var collector = new PropertyCollector();
foreach (var node in nodes)
{
int previousPropertyCount = Math.Max(0, collector.properties.Count - 1);
node.CollectShaderProperties(collector, GenerationMode.ForReals);
// This is a stop-gap to prevent the autogenerated values from JsonObject and ShaderInput from
// resulting in non-deterministic import data. While we should move to local ids in the future,
// this will prevent cascading shader recompilations.
for (int i = previousPropertyCount; i < collector.properties.Count; ++i)
{
var prop = collector.properties[i];
var namespaceId = node.objectId;
var nameId = prop.referenceName;
prop.OverrideObjectId(namespaceId, nameId + "_ObjectId_" + i);
prop.OverrideGuid(namespaceId, nameId + "_Guid_" + i);
}
}
asset.WriteData(graph.properties, graph.keywords, collector.properties, outputSlots, graph.unsupportedTargets);
outputSlots.Dispose();
}
private static bool GenerateShaderPassLit(AbstractMaterialNode masterNode, Pass pass, GenerationMode mode, SurfaceMaterialOptions materialOptions, ShaderGenerator result, List <string> sourceAssetDependencyPaths)
{
var templateLocation = Path.Combine(Path.Combine(Path.Combine(HDEditorUtils.GetHDRenderPipelinePath(), "Editor"), "ShaderGraph"), pass.TemplateName);
if (!File.Exists(templateLocation))
{
// TODO: produce error here
return(false);
}
if (sourceAssetDependencyPaths != null)
{
sourceAssetDependencyPaths.Add(templateLocation);
}
// grab all of the active nodes (for pixel and vertex graphs)
var vertexNodes = ListPool <INode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(vertexNodes, masterNode, NodeUtils.IncludeSelf.Include, pass.VertexShaderSlots);
var pixelNodes = ListPool <INode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(pixelNodes, masterNode, NodeUtils.IncludeSelf.Include, pass.PixelShaderSlots);
// graph requirements describe what the graph itself requires
var pixelRequirements = ShaderGraphRequirements.FromNodes(pixelNodes, ShaderStageCapability.Fragment, false); // TODO: is ShaderStageCapability.Fragment correct?
var vertexRequirements = ShaderGraphRequirements.FromNodes(vertexNodes, ShaderStageCapability.Vertex, false);
// Function Registry tracks functions to remove duplicates, it wraps a string builder that stores the combined function string
ShaderStringBuilder graphNodeFunctions = new ShaderStringBuilder();
graphNodeFunctions.IncreaseIndent();
var functionRegistry = new FunctionRegistry(graphNodeFunctions);
// TODO: this can be a shared function for all HDRP master nodes -- From here through GraphUtil.GenerateSurfaceDescription(..)
// Build the list of active slots based on what the pass requires
var pixelSlots = HDSubShaderUtilities.FindMaterialSlotsOnNode(pass.PixelShaderSlots, masterNode);
var vertexSlots = HDSubShaderUtilities.FindMaterialSlotsOnNode(pass.VertexShaderSlots, masterNode);
// properties used by either pixel and vertex shader
PropertyCollector sharedProperties = new PropertyCollector();
// build the graph outputs structure to hold the results of each active slots (and fill out activeFields to indicate they are active)
string pixelGraphInputStructName = "SurfaceDescriptionInputs";
string pixelGraphOutputStructName = "SurfaceDescription";
string pixelGraphEvalFunctionName = "SurfaceDescriptionFunction";
ShaderStringBuilder pixelGraphEvalFunction = new ShaderStringBuilder();
ShaderStringBuilder pixelGraphOutputs = new ShaderStringBuilder();
// dependency tracker -- set of active fields
HashSet <string> activeFields = GetActiveFieldsFromMasterNode(masterNode, pass);
// build initial requirements
HDRPShaderStructs.AddActiveFieldsFromPixelGraphRequirements(activeFields, pixelRequirements);
// build the graph outputs structure, and populate activeFields with the fields of that structure
GraphUtil.GenerateSurfaceDescriptionStruct(pixelGraphOutputs, pixelSlots, true, pixelGraphOutputStructName, activeFields);
// Build the graph evaluation code, to evaluate the specified slots
GraphUtil.GenerateSurfaceDescriptionFunction(
pixelNodes,
masterNode,
masterNode.owner as AbstractMaterialGraph,
pixelGraphEvalFunction,
functionRegistry,
sharedProperties,
pixelRequirements, // TODO : REMOVE UNUSED
mode,
pixelGraphEvalFunctionName,
pixelGraphOutputStructName,
null,
pixelSlots,
pixelGraphInputStructName);
string vertexGraphInputStructName = "VertexDescriptionInputs";
string vertexGraphOutputStructName = "VertexDescription";
string vertexGraphEvalFunctionName = "VertexDescriptionFunction";
ShaderStringBuilder vertexGraphEvalFunction = new ShaderStringBuilder();
ShaderStringBuilder vertexGraphOutputs = new ShaderStringBuilder();
// check for vertex animation -- enables HAVE_VERTEX_MODIFICATION
bool vertexActive = false;
if (masterNode.IsSlotConnected(PBRMasterNode.PositionSlotId))
{
vertexActive = true;
activeFields.Add("features.modifyMesh");
HDRPShaderStructs.AddActiveFieldsFromVertexGraphRequirements(activeFields, vertexRequirements);
// -------------------------------------
// Generate Output structure for Vertex Description function
GraphUtil.GenerateVertexDescriptionStruct(vertexGraphOutputs, vertexSlots, vertexGraphOutputStructName, activeFields);
// -------------------------------------
// Generate Vertex Description function
GraphUtil.GenerateVertexDescriptionFunction(
masterNode.owner as AbstractMaterialGraph,
vertexGraphEvalFunction,
functionRegistry,
sharedProperties,
mode,
vertexNodes,
vertexSlots,
vertexGraphInputStructName,
vertexGraphEvalFunctionName,
vertexGraphOutputStructName);
}
var blendCode = new ShaderStringBuilder();
var cullCode = new ShaderStringBuilder();
var zTestCode = new ShaderStringBuilder();
var zWriteCode = new ShaderStringBuilder();
var stencilCode = new ShaderStringBuilder();
var colorMaskCode = new ShaderStringBuilder();
HDSubShaderUtilities.BuildRenderStatesFromPassAndMaterialOptions(pass, materialOptions, blendCode, cullCode, zTestCode, zWriteCode, stencilCode, colorMaskCode);
HDRPShaderStructs.AddRequiredFields(pass.RequiredFields, activeFields);
// apply dependencies to the active fields, and build interpolators (TODO: split this function)
var packedInterpolatorCode = new ShaderGenerator();
HDRPShaderStructs.Generate(
packedInterpolatorCode,
activeFields);
// debug output all active fields
var interpolatorDefines = new ShaderGenerator();
{
interpolatorDefines.AddShaderChunk("// ACTIVE FIELDS:");
foreach (string f in activeFields)
{
interpolatorDefines.AddShaderChunk("// " + f);
}
}
// build graph inputs structures
ShaderGenerator pixelGraphInputs = new ShaderGenerator();
ShaderSpliceUtil.BuildType(typeof(HDRPShaderStructs.SurfaceDescriptionInputs), activeFields, pixelGraphInputs);
ShaderGenerator vertexGraphInputs = new ShaderGenerator();
ShaderSpliceUtil.BuildType(typeof(HDRPShaderStructs.VertexDescriptionInputs), activeFields, vertexGraphInputs);
ShaderGenerator defines = new ShaderGenerator();
{
defines.AddShaderChunk(string.Format("#define SHADERPASS {0}", pass.ShaderPassName), true);
if (pass.ExtraDefines != null)
{
foreach (var define in pass.ExtraDefines)
{
defines.AddShaderChunk(define);
}
}
defines.AddGenerator(interpolatorDefines);
}
var shaderPassIncludes = new ShaderGenerator();
if (pass.Includes != null)
{
foreach (var include in pass.Includes)
{
shaderPassIncludes.AddShaderChunk(include);
}
}
// build graph code
var graph = new ShaderGenerator();
{
graph.AddShaderChunk("// Shared Graph Properties (uniform inputs)");
graph.AddShaderChunk(sharedProperties.GetPropertiesDeclaration(1));
if (vertexActive)
{
graph.AddShaderChunk("// Vertex Graph Inputs");
graph.Indent();
graph.AddGenerator(vertexGraphInputs);
graph.Deindent();
graph.AddShaderChunk("// Vertex Graph Outputs");
graph.Indent();
graph.AddShaderChunk(vertexGraphOutputs.ToString());
graph.Deindent();
}
graph.AddShaderChunk("// Pixel Graph Inputs");
graph.Indent();
graph.AddGenerator(pixelGraphInputs);
graph.Deindent();
graph.AddShaderChunk("// Pixel Graph Outputs");
graph.Indent();
graph.AddShaderChunk(pixelGraphOutputs.ToString());
graph.Deindent();
graph.AddShaderChunk("// Shared Graph Node Functions");
graph.AddShaderChunk(graphNodeFunctions.ToString());
if (vertexActive)
{
graph.AddShaderChunk("// Vertex Graph Evaluation");
graph.Indent();
graph.AddShaderChunk(vertexGraphEvalFunction.ToString());
graph.Deindent();
}
graph.AddShaderChunk("// Pixel Graph Evaluation");
graph.Indent();
graph.AddShaderChunk(pixelGraphEvalFunction.ToString());
graph.Deindent();
}
// build the hash table of all named fragments TODO: could make this Dictionary<string, ShaderGenerator / string> ?
Dictionary <string, string> namedFragments = new Dictionary <string, string>();
namedFragments.Add("${Defines}", defines.GetShaderString(2, false));
namedFragments.Add("${Graph}", graph.GetShaderString(2, false));
namedFragments.Add("${LightMode}", pass.LightMode);
namedFragments.Add("${PassName}", pass.Name);
namedFragments.Add("${Includes}", shaderPassIncludes.GetShaderString(2, false));
namedFragments.Add("${InterpolatorPacking}", packedInterpolatorCode.GetShaderString(2, false));
namedFragments.Add("${Blending}", blendCode.ToString());
namedFragments.Add("${Culling}", cullCode.ToString());
namedFragments.Add("${ZTest}", zTestCode.ToString());
namedFragments.Add("${ZWrite}", zWriteCode.ToString());
namedFragments.Add("${Stencil}", stencilCode.ToString());
namedFragments.Add("${ColorMask}", colorMaskCode.ToString());
namedFragments.Add("${LOD}", materialOptions.lod.ToString());
// process the template to generate the shader code for this pass TODO: could make this a shared function
string[] templateLines = File.ReadAllLines(templateLocation);
System.Text.StringBuilder builder = new System.Text.StringBuilder();
foreach (string line in templateLines)
{
ShaderSpliceUtil.PreprocessShaderCode(line, activeFields, namedFragments, builder);
builder.AppendLine();
}
result.AddShaderChunk(builder.ToString(), false);
return(true);
}
void KickOffShaderCompilations()
{
// Start compilation for nodes that need to recompile
using (KickOffShaderCompilationsMarker.Auto())
using (var nodesToCompile = PooledHashSet <AbstractMaterialNode> .Get())
{
// master node compile is first in the priority list, as it takes longer than the other previews
if ((m_NodesCompiling.Count + nodesToCompile.Count < m_MaxNodesCompiling) &&
m_NodesNeedsRecompile.Contains(m_MasterRenderData.shaderData.node) &&
!m_NodesCompiling.Contains(m_MasterRenderData.shaderData.node) &&
((Shader.globalRenderPipeline != null) && (Shader.globalRenderPipeline.Length > 0))) // master node requires an SRP
{
var renderData = GetPreviewRenderData(m_MasterRenderData.shaderData.node);
Assert.IsTrue(renderData != null);
nodesToCompile.Add(m_MasterRenderData.shaderData.node);
}
// add each node to compile list if it needs a preview, is not already compiling, and we have room
// (we don't want to double kick compiles, so wait for the first one to get back before kicking another)
foreach (var node in m_NodesNeedsRecompile)
{
if (m_NodesCompiling.Count + nodesToCompile.Count >= m_MaxNodesCompiling)
{
break;
}
if (node.hasPreview && node.previewExpanded && !m_NodesCompiling.Contains(node))
{
var renderData = GetPreviewRenderData(node);
if (renderData == null) // non-active output nodes can have NULL render data (no preview)
{
continue;
}
nodesToCompile.Add(node);
}
}
// remove the selected nodes from the recompile list
m_NodesNeedsRecompile.ExceptWith(nodesToCompile);
// Reset error states for the UI, the shader, and all render data for nodes we're recompiling
m_Messenger.ClearNodesFromProvider(this, nodesToCompile);
// Force async compile on
var wasAsyncAllowed = ShaderUtil.allowAsyncCompilation;
ShaderUtil.allowAsyncCompilation = true;
// kick async compiles for all nodes in m_NodeToCompile
foreach (var node in nodesToCompile)
{
if (node is IMasterNode && masterRenderData != null && node == masterRenderData.shaderData.node && !(node is VfxMasterNode))
{
UpdateMasterNodeShader();
continue;
}
Assert.IsFalse(!node.hasPreview && !(node is SubGraphOutputNode || node is VfxMasterNode));
var renderData = GetPreviewRenderData(node);
// Get shader code and compile
var generator = new Generator(node.owner, node, GenerationMode.Preview, $"hidden/preview/{node.GetVariableNameForNode()}");
BeginCompile(renderData, generator.generatedShader);
// Calculate the PreviewMode from upstream nodes
// If any upstream node is 3D that trickles downstream
// TODO: not sure why this code exists here
// it would make more sense in HandleGraphChanges and/or RenderPreview
List <AbstractMaterialNode> upstreamNodes = new List <AbstractMaterialNode>();
NodeUtils.DepthFirstCollectNodesFromNode(upstreamNodes, node, NodeUtils.IncludeSelf.Include);
renderData.previewMode = PreviewMode.Preview2D;
foreach (var pNode in upstreamNodes)
{
if (pNode.previewMode == PreviewMode.Preview3D)
{
renderData.previewMode = PreviewMode.Preview3D;
break;
}
}
}
ShaderUtil.allowAsyncCompilation = wasAsyncAllowed;
}
}
static void GetActiveFieldsAndPermutationsForNodes(AbstractMaterialNode masterNode, ShaderPass pass,
KeywordCollector keywordCollector, List <AbstractMaterialNode> vertexNodes, List <AbstractMaterialNode> pixelNodes,
List <int>[] vertexNodePermutations, List <int>[] pixelNodePermutations,
ActiveFields activeFields, out ShaderGraphRequirementsPerKeyword graphRequirements)
{
// Initialize requirements
ShaderGraphRequirementsPerKeyword pixelRequirements = new ShaderGraphRequirementsPerKeyword();
ShaderGraphRequirementsPerKeyword vertexRequirements = new ShaderGraphRequirementsPerKeyword();
graphRequirements = new ShaderGraphRequirementsPerKeyword();
// Evaluate all Keyword permutations
if (keywordCollector.permutations.Count > 0)
{
for (int i = 0; i < keywordCollector.permutations.Count; i++)
{
// Get active nodes for this permutation
var localVertexNodes = Graphing.ListPool <AbstractMaterialNode> .Get();
var localPixelNodes = Graphing.ListPool <AbstractMaterialNode> .Get();
NodeUtils.DepthFirstCollectNodesFromNode(localVertexNodes, masterNode, NodeUtils.IncludeSelf.Include, pass.vertexPorts, keywordCollector.permutations[i]);
NodeUtils.DepthFirstCollectNodesFromNode(localPixelNodes, masterNode, NodeUtils.IncludeSelf.Include, pass.pixelPorts, keywordCollector.permutations[i]);
// Track each vertex node in this permutation
foreach (AbstractMaterialNode vertexNode in localVertexNodes)
{
int nodeIndex = vertexNodes.IndexOf(vertexNode);
if (vertexNodePermutations[nodeIndex] == null)
{
vertexNodePermutations[nodeIndex] = new List <int>();
}
vertexNodePermutations[nodeIndex].Add(i);
}
// Track each pixel node in this permutation
foreach (AbstractMaterialNode pixelNode in localPixelNodes)
{
int nodeIndex = pixelNodes.IndexOf(pixelNode);
if (pixelNodePermutations[nodeIndex] == null)
{
pixelNodePermutations[nodeIndex] = new List <int>();
}
pixelNodePermutations[nodeIndex].Add(i);
}
// Get requirements for this permutation
vertexRequirements[i].SetRequirements(ShaderGraphRequirements.FromNodes(localVertexNodes, ShaderStageCapability.Vertex, false));
pixelRequirements[i].SetRequirements(ShaderGraphRequirements.FromNodes(localPixelNodes, ShaderStageCapability.Fragment, false));
// Add active fields
AddActiveFieldsFromGraphRequirements(activeFields[i], vertexRequirements[i].requirements, "VertexDescriptionInputs");
AddActiveFieldsFromGraphRequirements(activeFields[i], pixelRequirements[i].requirements, "SurfaceDescriptionInputs");
}
}
// No Keywords
else
{
// Get requirements
vertexRequirements.baseInstance.SetRequirements(ShaderGraphRequirements.FromNodes(vertexNodes, ShaderStageCapability.Vertex, false));
pixelRequirements.baseInstance.SetRequirements(ShaderGraphRequirements.FromNodes(pixelNodes, ShaderStageCapability.Fragment, false));
// Add active fields
AddActiveFieldsFromGraphRequirements(activeFields.baseInstance, vertexRequirements.baseInstance.requirements, "VertexDescriptionInputs");
AddActiveFieldsFromGraphRequirements(activeFields.baseInstance, pixelRequirements.baseInstance.requirements, "SurfaceDescriptionInputs");
}
// Build graph requirements
graphRequirements.UnionWith(pixelRequirements);
graphRequirements.UnionWith(vertexRequirements);
}