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));
}
});
}
public static string GetPreviewSubShader(AbstractMaterialNode node, ShaderGraphRequirements shaderGraphRequirements)
{
var vertexOutputStruct = new ShaderStringBuilder(2);
var vertexShader = new ShaderStringBuilder(2);
var vertexShaderDescriptionInputs = new ShaderStringBuilder(2);
var vertexShaderOutputs = new ShaderStringBuilder(1);
var pixelShader = new ShaderStringBuilder(2);
var pixelShaderSurfaceInputs = new ShaderStringBuilder(2);
var pixelShaderSurfaceRemap = new ShaderStringBuilder(2);
ShaderGenerator.GenerateStandardTransforms(
0,
16,
vertexOutputStruct,
vertexShader,
vertexShaderDescriptionInputs,
vertexShaderOutputs,
pixelShader,
pixelShaderSurfaceInputs,
shaderGraphRequirements,
shaderGraphRequirements,
ShaderGraphRequirements.none,
ShaderGraphRequirements.none,
CoordinateSpace.World);
vertexShader.AppendLines(vertexShaderDescriptionInputs.ToString());
vertexShader.AppendLines(vertexShaderOutputs.ToString());
if (node != null)
{
var outputSlot = node.GetOutputSlots <MaterialSlot>().FirstOrDefault();
if (outputSlot != null)
{
var result = string.Format("surf.{0}", node.GetVariableNameForSlot(outputSlot.id));
pixelShaderSurfaceRemap.AppendLine("return {0};", AdaptNodeOutputForPreview(node, outputSlot.id, result));
}
else
{
pixelShaderSurfaceRemap.AppendLine("return 0;");
}
}
else
{
pixelShaderSurfaceRemap.AppendLine("return all(isfinite(surf.PreviewOutput)) ? surf.PreviewOutput : float4(1.0f, 0.0f, 1.0f, 1.0f);");
}
// -------------------------------------
// Extra pixel shader work
var faceSign = new ShaderStringBuilder();
if (shaderGraphRequirements.requiresFaceSign)
{
faceSign.AppendLine(", half FaceSign : VFACE");
}
var res = subShaderTemplate.Replace("${Interpolators}", vertexOutputStruct.ToString());
res = res.Replace("${VertexShader}", vertexShader.ToString());
res = res.Replace("${FaceSign}", faceSign.ToString());
res = res.Replace("${LocalPixelShader}", pixelShader.ToString());
res = res.Replace("${SurfaceInputs}", pixelShaderSurfaceInputs.ToString());
res = res.Replace("${SurfaceOutputRemap}", pixelShaderSurfaceRemap.ToString());
return(res);
}
// Node generations
public virtual void GenerateNodeCode(ShaderGenerator visitor, GraphContext graphContext, GenerationMode generationMode)
{
var sb = new ShaderStringBuilder();
sb.AppendLine("{0}3 {1}_UV = {2} * {3};", precision, GetVariableNameForNode(),
GetSlotValue(PositionInputId, generationMode), GetSlotValue(TileInputId, generationMode));
//Sampler input slot
var samplerSlot = FindInputSlot <MaterialSlot>(SamplerInputId);
var edgesSampler = owner.GetEdges(samplerSlot.slotReference);
var id = GetSlotValue(TextureInputId, generationMode);
switch (textureType)
{
// Whiteout blend method
// https://medium.com/@bgolus/normal-mapping-for-a-triplanar-shader-10bf39dca05a
case TextureType.Normal:
sb.AppendLine("{0}3 {1}_Blend = max(pow(abs({2}), {3}), 0);", precision, GetVariableNameForNode(),
GetSlotValue(NormalInputId, generationMode), GetSlotValue(BlendInputId, generationMode));
sb.AppendLine("{0}_Blend /= ({0}_Blend.x + {0}_Blend.y + {0}_Blend.z ).xxx;", GetVariableNameForNode());
sb.AppendLine("{0}3 {1}_X = UnpackNormalmapRGorAG(SAMPLE_TEXTURE2D({2}, {3}, {1}_UV.zy));"
, precision
, GetVariableNameForNode()
, id
, edgesSampler.Any() ? GetSlotValue(SamplerInputId, generationMode) : "sampler" + id);
sb.AppendLine("{0}3 {1}_Y = UnpackNormalmapRGorAG(SAMPLE_TEXTURE2D({2}, {3}, {1}_UV.xz));"
, precision
, GetVariableNameForNode()
, id
, edgesSampler.Any() ? GetSlotValue(SamplerInputId, generationMode) : "sampler" + id);
sb.AppendLine("{0}3 {1}_Z = UnpackNormalmapRGorAG(SAMPLE_TEXTURE2D({2}, {3}, {1}_UV.xy));"
, precision
, GetVariableNameForNode()
, id
, edgesSampler.Any() ? GetSlotValue(SamplerInputId, generationMode) : "sampler" + id);
sb.AppendLine("{0}_X = {1}3({0}_X.xy + {2}.zy, abs({0}_X.z) * {2}.x);"
, GetVariableNameForNode()
, precision
, GetSlotValue(NormalInputId, generationMode));
sb.AppendLine("{0}_Y = {1}3({0}_Y.xy + {2}.xz, abs({0}_Y.z) * {2}.y);"
, GetVariableNameForNode()
, precision
, GetSlotValue(NormalInputId, generationMode));
sb.AppendLine("{0}_Z = {1}3({0}_Z.xy + {2}.xy, abs({0}_Z.z) * {2}.z);"
, GetVariableNameForNode()
, precision
, GetSlotValue(NormalInputId, generationMode));
sb.AppendLine("{0}4 {1} = {0}4(normalize({2}_X.zyx * {2}_Blend.x + {2}_Y.xzy * {2}_Blend.y + {2}_Z.xyz * {2}_Blend.z), 1);"
, precision
, GetVariableNameForSlot(OutputSlotId)
, GetVariableNameForNode());
sb.AppendLine("float3x3 {0}_Transform = float3x3(IN.WorldSpaceTangent, IN.WorldSpaceBiTangent, IN.WorldSpaceNormal);", GetVariableNameForNode());
sb.AppendLine("{0}.rgb = TransformWorldToTangent({0}.rgb, {1}_Transform);"
, GetVariableNameForSlot(OutputSlotId)
, GetVariableNameForNode());
break;
default:
sb.AppendLine("{0}3 {1}_Blend = pow(abs({2}), {3});", precision, GetVariableNameForNode(),
GetSlotValue(NormalInputId, generationMode), GetSlotValue(BlendInputId, generationMode));
sb.AppendLine("{0}_Blend /= dot({0}_Blend, 1.0);", GetVariableNameForNode());
sb.AppendLine("{0}4 {1}_X = SAMPLE_TEXTURE2D({2}, {3}, {1}_UV.zy);"
, precision
, GetVariableNameForNode()
, id
, edgesSampler.Any() ? GetSlotValue(SamplerInputId, generationMode) : "sampler" + id);
sb.AppendLine("{0}4 {1}_Y = SAMPLE_TEXTURE2D({2}, {3}, {1}_UV.xz);"
, precision
, GetVariableNameForNode()
, id
, edgesSampler.Any() ? GetSlotValue(SamplerInputId, generationMode) : "sampler" + id);
sb.AppendLine("{0}4 {1}_Z = SAMPLE_TEXTURE2D({2}, {3}, {1}_UV.xy);"
, precision
, GetVariableNameForNode()
, id
, edgesSampler.Any() ? GetSlotValue(SamplerInputId, generationMode) : "sampler" + id);
sb.AppendLine("{0}4 {1} = {2}_X * {2}_Blend.x + {2}_Y * {2}_Blend.y + {2}_Z * {2}_Blend.z;"
, precision
, GetVariableNameForSlot(OutputSlotId)
, GetVariableNameForNode());
break;
}
visitor.AddShaderChunk(sb.ToString(), false);
}
public void GenerateNodeCode(ShaderGenerator visitor, GraphContext graphContext, GenerationMode generationMode)
{
visitor.AddShaderChunk(string.Format("{0}3 {1} = {0}3{2};", precision, GetVariableNameForSlot(kOutputSlotId), m_MaterialList[material].ToString(CultureInfo.InvariantCulture)), true);
}
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 || activeNode is SubGraphOutputNode)
{
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);
}
public static bool GenerateShaderPass(AbstractMaterialNode masterNode, ShaderPass pass, GenerationMode mode,
ActiveFields activeFields, ShaderGenerator result, List <string> sourceAssetDependencyPaths,
List <Dependency[]> dependencies, string resourceClassName, string assemblyName)
{
// --------------------------------------------------
// Debug
// Get scripting symbols
BuildTargetGroup buildTargetGroup = EditorUserBuildSettings.selectedBuildTargetGroup;
string defines = PlayerSettings.GetScriptingDefineSymbolsForGroup(buildTargetGroup);
bool isDebug = defines.Contains(kDebugSymbol);
// --------------------------------------------------
// Setup
// Initiailize Collectors
var propertyCollector = new PropertyCollector();
var keywordCollector = new KeywordCollector();
masterNode.owner.CollectShaderKeywords(keywordCollector, mode);
// Get upstream nodes from ShaderPass port mask
List <AbstractMaterialNode> vertexNodes;
List <AbstractMaterialNode> pixelNodes;
GetUpstreamNodesForShaderPass(masterNode, pass, out vertexNodes, out pixelNodes);
// Track permutation indices for all nodes
List <int>[] vertexNodePermutations = new List <int> [vertexNodes.Count];
List <int>[] pixelNodePermutations = new List <int> [pixelNodes.Count];
// Get active fields from upstream Node requirements
ShaderGraphRequirementsPerKeyword graphRequirements;
GetActiveFieldsAndPermutationsForNodes(masterNode, pass, keywordCollector, vertexNodes, pixelNodes,
vertexNodePermutations, pixelNodePermutations, activeFields, out graphRequirements);
// GET CUSTOM ACTIVE FIELDS HERE!
// Get active fields from ShaderPass
AddRequiredFields(pass.requiredAttributes, activeFields.baseInstance);
AddRequiredFields(pass.requiredVaryings, activeFields.baseInstance);
// Get Port references from ShaderPass
var pixelSlots = FindMaterialSlotsOnNode(pass.pixelPorts, masterNode);
var vertexSlots = FindMaterialSlotsOnNode(pass.vertexPorts, masterNode);
// Function Registry
var functionBuilder = new ShaderStringBuilder();
var functionRegistry = new FunctionRegistry(functionBuilder);
// Hash table of named $splice(name) commands
// Key: splice token
// Value: string to splice
Dictionary <string, string> spliceCommands = new Dictionary <string, string>();
// --------------------------------------------------
// Dependencies
// Propagate active field requirements using dependencies
// Must be executed before types are built
foreach (var instance in activeFields.all.instances)
{
ShaderSpliceUtil.ApplyDependencies(instance, dependencies);
}
// --------------------------------------------------
// Pass Setup
// Name
if (!string.IsNullOrEmpty(pass.displayName))
{
spliceCommands.Add("PassName", $"Name \"{pass.displayName}\"");
}
else
{
spliceCommands.Add("PassName", "// Name: <None>");
}
// Tags
if (!string.IsNullOrEmpty(pass.lightMode))
{
spliceCommands.Add("LightMode", $"\"LightMode\" = \"{pass.lightMode}\"");
}
else
{
spliceCommands.Add("LightMode", "// LightMode: <None>");
}
// Render state
BuildRenderStatesFromPass(pass, ref spliceCommands);
// --------------------------------------------------
// Pass Code
// Pragmas
using (var passPragmaBuilder = new ShaderStringBuilder())
{
if (pass.pragmas != null)
{
foreach (string pragma in pass.pragmas)
{
passPragmaBuilder.AppendLine($"#pragma {pragma}");
}
}
if (passPragmaBuilder.length == 0)
{
passPragmaBuilder.AppendLine("// PassPragmas: <None>");
}
spliceCommands.Add("PassPragmas", passPragmaBuilder.ToCodeBlack());
}
// Includes
using (var passIncludeBuilder = new ShaderStringBuilder())
{
if (pass.includes != null)
{
foreach (string include in pass.includes)
{
passIncludeBuilder.AppendLine($"#include \"{include}\"");
}
}
if (passIncludeBuilder.length == 0)
{
passIncludeBuilder.AppendLine("// PassIncludes: <None>");
}
spliceCommands.Add("PassIncludes", passIncludeBuilder.ToCodeBlack());
}
// Keywords
using (var passKeywordBuilder = new ShaderStringBuilder())
{
if (pass.keywords != null)
{
foreach (KeywordDescriptor keyword in pass.keywords)
{
passKeywordBuilder.AppendLine(keyword.ToDeclarationString());
}
}
if (passKeywordBuilder.length == 0)
{
passKeywordBuilder.AppendLine("// PassKeywords: <None>");
}
spliceCommands.Add("PassKeywords", passKeywordBuilder.ToCodeBlack());
}
// --------------------------------------------------
// Graph Vertex
var vertexBuilder = new ShaderStringBuilder();
// If vertex modification enabled
if (activeFields.baseInstance.Contains("features.graphVertex"))
{
// Setup
string vertexGraphInputName = "VertexDescriptionInputs";
string vertexGraphOutputName = "VertexDescription";
string vertexGraphFunctionName = "VertexDescriptionFunction";
var vertexGraphInputGenerator = new ShaderGenerator();
var vertexGraphFunctionBuilder = new ShaderStringBuilder();
var vertexGraphOutputBuilder = new ShaderStringBuilder();
// Build vertex graph inputs
ShaderSpliceUtil.BuildType(GetTypeForStruct("VertexDescriptionInputs", resourceClassName, assemblyName), activeFields, vertexGraphInputGenerator, isDebug);
// Build vertex graph outputs
// Add struct fields to active fields
SubShaderGenerator.GenerateVertexDescriptionStruct(vertexGraphOutputBuilder, vertexSlots, vertexGraphOutputName, activeFields.baseInstance);
// Build vertex graph functions from ShaderPass vertex port mask
SubShaderGenerator.GenerateVertexDescriptionFunction(
masterNode.owner as GraphData,
vertexGraphFunctionBuilder,
functionRegistry,
propertyCollector,
keywordCollector,
mode,
masterNode,
vertexNodes,
vertexNodePermutations,
vertexSlots,
vertexGraphInputName,
vertexGraphFunctionName,
vertexGraphOutputName);
// Generate final shader strings
vertexBuilder.AppendLines(vertexGraphInputGenerator.GetShaderString(0, false));
vertexBuilder.AppendNewLine();
vertexBuilder.AppendLines(vertexGraphOutputBuilder.ToString());
vertexBuilder.AppendNewLine();
vertexBuilder.AppendLines(vertexGraphFunctionBuilder.ToString());
}
// Add to splice commands
if (vertexBuilder.length == 0)
{
vertexBuilder.AppendLine("// GraphVertex: <None>");
}
spliceCommands.Add("GraphVertex", vertexBuilder.ToCodeBlack());
// --------------------------------------------------
// Graph Pixel
// Setup
string pixelGraphInputName = "SurfaceDescriptionInputs";
string pixelGraphOutputName = "SurfaceDescription";
string pixelGraphFunctionName = "SurfaceDescriptionFunction";
var pixelGraphInputGenerator = new ShaderGenerator();
var pixelGraphOutputBuilder = new ShaderStringBuilder();
var pixelGraphFunctionBuilder = new ShaderStringBuilder();
// Build pixel graph inputs
ShaderSpliceUtil.BuildType(GetTypeForStruct("SurfaceDescriptionInputs", resourceClassName, assemblyName), activeFields, pixelGraphInputGenerator, isDebug);
// Build pixel graph outputs
// Add struct fields to active fields
SubShaderGenerator.GenerateSurfaceDescriptionStruct(pixelGraphOutputBuilder, pixelSlots, pixelGraphOutputName, activeFields.baseInstance);
// Build pixel graph functions from ShaderPass pixel port mask
SubShaderGenerator.GenerateSurfaceDescriptionFunction(
pixelNodes,
pixelNodePermutations,
masterNode,
masterNode.owner as GraphData,
pixelGraphFunctionBuilder,
functionRegistry,
propertyCollector,
keywordCollector,
mode,
pixelGraphFunctionName,
pixelGraphOutputName,
null,
pixelSlots,
pixelGraphInputName);
using (var pixelBuilder = new ShaderStringBuilder())
{
// Generate final shader strings
pixelBuilder.AppendLines(pixelGraphInputGenerator.GetShaderString(0, false));
pixelBuilder.AppendNewLine();
pixelBuilder.AppendLines(pixelGraphOutputBuilder.ToString());
pixelBuilder.AppendNewLine();
pixelBuilder.AppendLines(pixelGraphFunctionBuilder.ToString());
// Add to splice commands
if (pixelBuilder.length == 0)
{
pixelBuilder.AppendLine("// GraphPixel: <None>");
}
spliceCommands.Add("GraphPixel", pixelBuilder.ToCodeBlack());
}
// --------------------------------------------------
// Graph Functions
if (functionBuilder.length == 0)
{
functionBuilder.AppendLine("// GraphFunctions: <None>");
}
spliceCommands.Add("GraphFunctions", functionBuilder.ToCodeBlack());
// --------------------------------------------------
// Graph Keywords
using (var keywordBuilder = new ShaderStringBuilder())
{
keywordCollector.GetKeywordsDeclaration(keywordBuilder, mode);
if (keywordBuilder.length == 0)
{
keywordBuilder.AppendLine("// GraphKeywords: <None>");
}
spliceCommands.Add("GraphKeywords", keywordBuilder.ToCodeBlack());
}
// --------------------------------------------------
// Graph Properties
using (var propertyBuilder = new ShaderStringBuilder())
{
propertyCollector.GetPropertiesDeclaration(propertyBuilder, mode, masterNode.owner.concretePrecision);
if (propertyBuilder.length == 0)
{
propertyBuilder.AppendLine("// GraphProperties: <None>");
}
spliceCommands.Add("GraphProperties", propertyBuilder.ToCodeBlack());
}
// --------------------------------------------------
// Graph Defines
using (var graphDefines = new ShaderStringBuilder())
{
graphDefines.AppendLine("#define {0}", pass.referenceName);
if (graphRequirements.permutationCount > 0)
{
List <int> activePermutationIndices;
// Depth Texture
activePermutationIndices = graphRequirements.allPermutations.instances
.Where(p => p.requirements.requiresDepthTexture)
.Select(p => p.permutationIndex)
.ToList();
if (activePermutationIndices.Count > 0)
{
graphDefines.AppendLine(KeywordUtil.GetKeywordPermutationSetConditional(activePermutationIndices));
graphDefines.AppendLine("#define REQUIRE_DEPTH_TEXTURE");
graphDefines.AppendLine("#endif");
}
// Opaque Texture
activePermutationIndices = graphRequirements.allPermutations.instances
.Where(p => p.requirements.requiresCameraOpaqueTexture)
.Select(p => p.permutationIndex)
.ToList();
if (activePermutationIndices.Count > 0)
{
graphDefines.AppendLine(KeywordUtil.GetKeywordPermutationSetConditional(activePermutationIndices));
graphDefines.AppendLine("#define REQUIRE_OPAQUE_TEXTURE");
graphDefines.AppendLine("#endif");
}
}
else
{
// Depth Texture
if (graphRequirements.baseInstance.requirements.requiresDepthTexture)
{
graphDefines.AppendLine("#define REQUIRE_DEPTH_TEXTURE");
}
// Opaque Texture
if (graphRequirements.baseInstance.requirements.requiresCameraOpaqueTexture)
{
graphDefines.AppendLine("#define REQUIRE_OPAQUE_TEXTURE");
}
}
// Add to splice commands
spliceCommands.Add("GraphDefines", graphDefines.ToCodeBlack());
}
// --------------------------------------------------
// Main
// Main include is expected to contain vert/frag definitions for the pass
// This must be defined after all graph code
using (var mainBuilder = new ShaderStringBuilder())
{
mainBuilder.AppendLine($"#include \"{pass.varyingsInclude}\"");
mainBuilder.AppendLine($"#include \"{pass.passInclude}\"");
// Add to splice commands
spliceCommands.Add("MainInclude", mainBuilder.ToCodeBlack());
}
// --------------------------------------------------
// Debug
// Debug output all active fields
using (var debugBuilder = new ShaderStringBuilder())
{
if (isDebug)
{
// Active fields
debugBuilder.AppendLine("// ACTIVE FIELDS:");
foreach (string field in activeFields.baseInstance.fields)
{
debugBuilder.AppendLine("// " + field);
}
}
if (debugBuilder.length == 0)
{
debugBuilder.AppendLine("// <None>");
}
// Add to splice commands
spliceCommands.Add("Debug", debugBuilder.ToCodeBlack());
}
// --------------------------------------------------
// Finalize
// Get Template
string templateLocation = GetTemplatePath("PassMesh.template");
if (!File.Exists(templateLocation))
{
return(false);
}
// Get Template preprocessor
string templatePath = "Assets/Scripts/URP/com.unity.render-pipelines.universal/Editor/ShaderGraph/Templates";
var templatePreprocessor = new ShaderSpliceUtil.TemplatePreprocessor(activeFields, spliceCommands,
isDebug, templatePath, sourceAssetDependencyPaths, assemblyName, resourceClassName);
// Process Template
templatePreprocessor.ProcessTemplateFile(templateLocation);
result.AddShaderChunk(templatePreprocessor.GetShaderCode().ToString(), false);
return(true);
}
public void GenerateNodeCode(ShaderGenerator visitor, GraphContext graphContext, GenerationMode generationMode)
{
var graph = owner as GraphData;
var property = graph.properties.FirstOrDefault(x => x.guid == propertyGuid);
if (property == null)
{
return;
}
if (property is Vector1ShaderProperty)
{
var result = string.Format("{0} {1} = {2};"
, precision
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
else if (property is Vector2ShaderProperty)
{
var result = string.Format("{0}2 {1} = {2};"
, precision
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
else if (property is Vector3ShaderProperty)
{
var result = string.Format("{0}3 {1} = {2};"
, precision
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
else if (property is Vector4ShaderProperty)
{
var result = string.Format("{0}4 {1} = {2};"
, precision
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
else if (property is ColorShaderProperty)
{
var result = string.Format("{0}4 {1} = {2};"
, precision
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
else if (property is BooleanShaderProperty)
{
var result = string.Format("{0} {1} = {2};"
, precision
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
else if (property is Matrix2ShaderProperty)
{
var result = string.Format("{0}2x2 {1} = {2};"
, precision
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
else if (property is Matrix3ShaderProperty)
{
var result = string.Format("{0}3x3 {1} = {2};"
, precision
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
else if (property is Matrix4ShaderProperty)
{
var result = string.Format("{0}4x4 {1} = {2};"
, precision
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
else if (property is SamplerStateShaderProperty)
{
SamplerStateShaderProperty samplerStateProperty = property as SamplerStateShaderProperty;
var result = string.Format("SamplerState {0} = {1}_{2}_{3};"
, GetVariableNameForSlot(OutputSlotId)
, samplerStateProperty.referenceName
, samplerStateProperty.value.filter
, samplerStateProperty.value.wrap);
visitor.AddShaderChunk(result, true);
}
else if (property is GradientShaderProperty)
{
if (generationMode == GenerationMode.Preview)
{
var result = string.Format("Gradient {0} = {1};"
, GetVariableNameForSlot(OutputSlotId)
, GradientUtils.GetGradientForPreview(property.referenceName));
visitor.AddShaderChunk(result, true);
}
else
{
var result = string.Format("Gradient {0} = {1};"
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
}
}
public static void GenerateSurfaceDescription(
List <INode> activeNodeList,
AbstractMaterialNode masterNode,
AbstractMaterialGraph graph,
ShaderGenerator surfaceDescriptionFunction,
FunctionRegistry functionRegistry,
PropertyCollector shaderProperties,
ShaderGraphRequirements requirements,
GenerationMode mode,
string functionName = "PopulateSurfaceData",
string surfaceDescriptionName = "SurfaceDescription",
Vector1ShaderProperty outputIdProperty = null,
IEnumerable <MaterialSlot> slots = null)
{
if (graph == null)
{
return;
}
surfaceDescriptionFunction.AddShaderChunk(String.Format("{0} {1}(SurfaceInputs IN) {{", surfaceDescriptionName, functionName), false);
surfaceDescriptionFunction.Indent();
surfaceDescriptionFunction.AddShaderChunk(String.Format("{0} surface = ({0})0;", surfaceDescriptionName), false);
graph.CollectShaderProperties(shaderProperties, mode);
foreach (var activeNode in activeNodeList.OfType <AbstractMaterialNode>())
{
if (activeNode is IGeneratesFunction)
{
functionRegistry.builder.currentNode = activeNode;
(activeNode as IGeneratesFunction).GenerateNodeFunction(functionRegistry, mode);
}
if (activeNode is IGeneratesBodyCode)
{
(activeNode as IGeneratesBodyCode).GenerateNodeCode(surfaceDescriptionFunction, mode);
}
if (masterNode == null && activeNode.hasPreview)
{
var outputSlot = activeNode.GetOutputSlots <MaterialSlot>().FirstOrDefault();
if (outputSlot != null)
{
surfaceDescriptionFunction.AddShaderChunk(String.Format("if ({0} == {1}) {{ surface.PreviewOutput = {2}; return surface; }}", outputIdProperty.referenceName, activeNode.tempId.index, ShaderGenerator.AdaptNodeOutputForPreview(activeNode, outputSlot.id, activeNode.GetVariableNameForSlot(outputSlot.id))), false);
}
}
// In case of the subgraph output node, the preview is generated
// from the first input to the node.
if (activeNode is SubGraphOutputNode)
{
var inputSlot = activeNode.GetInputSlots <MaterialSlot>().FirstOrDefault();
if (inputSlot != null)
{
var foundEdges = graph.GetEdges(inputSlot.slotReference).ToArray();
string slotValue = foundEdges.Any() ? activeNode.GetSlotValue(inputSlot.id, mode) : inputSlot.GetDefaultValue(mode);
surfaceDescriptionFunction.AddShaderChunk(String.Format("if ({0} == {1}) {{ surface.PreviewOutput = {2}; return surface; }}", outputIdProperty.referenceName, activeNode.tempId.index, slotValue), false);
}
}
activeNode.CollectShaderProperties(shaderProperties, mode);
}
functionRegistry.builder.currentNode = null;
if (masterNode != null)
{
if (masterNode is IMasterNode)
{
var usedSlots = slots ?? masterNode.GetInputSlots <MaterialSlot>();
foreach (var input in usedSlots)
{
var foundEdges = graph.GetEdges(input.slotReference).ToArray();
if (foundEdges.Any())
{
surfaceDescriptionFunction.AddShaderChunk(string.Format("surface.{0} = {1};", NodeUtils.GetHLSLSafeName(input.shaderOutputName), masterNode.GetSlotValue(input.id, mode)), true);
}
else
{
surfaceDescriptionFunction.AddShaderChunk(string.Format("surface.{0} = {1};", NodeUtils.GetHLSLSafeName(input.shaderOutputName), input.GetDefaultValue(mode)), true);
}
}
}
else if (masterNode.hasPreview)
{
foreach (var slot in masterNode.GetOutputSlots <MaterialSlot>())
{
surfaceDescriptionFunction.AddShaderChunk(string.Format("surface.{0} = {1};", NodeUtils.GetHLSLSafeName(slot.shaderOutputName), masterNode.GetSlotValue(slot.id, mode)), true);
}
}
}
surfaceDescriptionFunction.AddShaderChunk("return surface;", false);
surfaceDescriptionFunction.Deindent();
surfaceDescriptionFunction.AddShaderChunk("}", false);
}
public static void BuildType(System.Type t, ActiveFields activeFields, ShaderGenerator result, bool isDebug)
{
result.AddShaderChunk("struct " + t.Name);
result.AddShaderChunk("{");
result.Indent();
foreach (FieldInfo field in t.GetFields(BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public))
{
if (field.MemberType == MemberTypes.Field)
{
bool isOptional = false;
var fieldIsActive = false;
var keywordIfdefs = string.Empty;
if (activeFields.permutationCount > 0)
{
// Evaluate all activeFields instance
var instances = activeFields
.allPermutations.instances
.Where(i => ShouldSpliceField(t, field, i, out isOptional))
.ToList();
fieldIsActive = instances.Count > 0;
if (fieldIsActive)
{
keywordIfdefs = KeywordUtil.GetKeywordPermutationSetConditional(instances
.Select(i => i.permutationIndex).ToList());
}
}
else
{
fieldIsActive = ShouldSpliceField(t, field, activeFields.baseInstance, out isOptional);
}
if (fieldIsActive)
{
// The field is used, so generate it
var semanticString = GetFieldSemantic(field);
int componentCount;
var fieldType = GetFieldType(field, out componentCount);
var conditional = GetFieldConditional(field);
if (conditional != null)
{
result.AddShaderChunk("#if " + conditional);
}
if (!string.IsNullOrEmpty(keywordIfdefs))
{
result.AddShaderChunk(keywordIfdefs);
}
var fieldDecl = fieldType + " " + field.Name + semanticString + ";" + (isOptional & isDebug ? " // optional" : string.Empty);
result.AddShaderChunk(fieldDecl);
if (!string.IsNullOrEmpty(keywordIfdefs))
{
result.AddShaderChunk("#endif" + (isDebug ? " // Shader Graph Keywords" : string.Empty));
}
if (conditional != null)
{
result.AddShaderChunk("#endif" + (isDebug ? $" // {conditional}" : string.Empty));
}
}
}
}
result.Deindent();
result.AddShaderChunk("};");
object[] packAttributes = t.GetCustomAttributes(typeof(InterpolatorPack), false);
if (packAttributes.Length > 0)
{
result.AddNewLine();
if (activeFields.permutationCount > 0)
{
var generatedPackedTypes = new Dictionary <string, (ShaderGenerator, List <int>)>();
foreach (var instance in activeFields.allPermutations.instances)
{
var instanceGenerator = new ShaderGenerator();
BuildPackedType(t, instance, instanceGenerator, isDebug);
var key = instanceGenerator.GetShaderString(0);
if (generatedPackedTypes.TryGetValue(key, out var value))
{
value.Item2.Add(instance.permutationIndex);
}
else
{
generatedPackedTypes.Add(key, (instanceGenerator, new List <int> {
instance.permutationIndex
}));
public void GenerateNodeCode(ShaderGenerator visitor, GenerationMode generationMode)
{
visitor.AddShaderChunk(precision + " " + GetVariableNameForNode() + " = " + m_constantList[constant] + ";", true);
}
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 ""Packages/com.unity.render-pipelines.core/ShaderLibrary/Common.hlsl""");
finalShader.AppendLine(@"#include ""Packages/com.unity.render-pipelines.core/ShaderLibrary/Packing.hlsl""");
finalShader.AppendLine(@"#include ""Packages/com.unity.render-pipelines.core/ShaderLibrary/NormalSurfaceGradient.hlsl""");
finalShader.AppendLine(@"#include ""Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl""");
finalShader.AppendLine(@"#include ""Packages/com.unity.render-pipelines.core/ShaderLibrary/UnityInstancing.hlsl""");
finalShader.AppendLine(@"#include ""Packages/com.unity.render-pipelines.core/ShaderLibrary/EntityLighting.hlsl""");
finalShader.AppendLine(@"#include ""Assets/com.unity.shadergraph/ShaderGraphLibrary/ShaderVariables.hlsl""");
finalShader.AppendLine(@"#include ""Assets/com.unity.shadergraph/ShaderGraphLibrary/ShaderVariablesFunctions.hlsl""");
finalShader.AppendLine(@"#include ""Assets/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 string GetPreviewSubShader(AbstractMaterialNode node, ShaderGraphRequirements shaderGraphRequirements)
{
// Should never be called without a node
Debug.Assert(node != null);
var vertexOutputStruct = new ShaderStringBuilder(2);
var vertexShader = new ShaderStringBuilder(2);
var vertexShaderDescriptionInputs = new ShaderStringBuilder(2);
var vertexShaderOutputs = new ShaderStringBuilder(1);
var pixelShader = new ShaderStringBuilder(2);
var pixelShaderSurfaceInputs = new ShaderStringBuilder(2);
var pixelShaderSurfaceRemap = new ShaderStringBuilder(2);
ShaderGenerator.GenerateStandardTransforms(
0,
16,
vertexOutputStruct,
vertexShader,
vertexShaderDescriptionInputs,
vertexShaderOutputs,
pixelShader,
pixelShaderSurfaceInputs,
shaderGraphRequirements,
shaderGraphRequirements,
ShaderGraphRequirements.none,
ShaderGraphRequirements.none,
CoordinateSpace.World);
vertexShader.AppendLines(vertexShaderDescriptionInputs.ToString());
vertexShader.AppendLines(vertexShaderOutputs.ToString());
var outputSlot = node.GetOutputSlots <MaterialSlot>().FirstOrDefault();
// Sub Graph Output uses first input slot
if (node is SubGraphOutputNode)
{
outputSlot = node.GetInputSlots <MaterialSlot>().FirstOrDefault();
}
if (outputSlot != null)
{
var result = $"surf.{NodeUtils.GetHLSLSafeName(outputSlot.shaderOutputName)}_{outputSlot.id}";
pixelShaderSurfaceRemap.AppendLine("return all(isfinite({0})) ? {1} : {2};",
result, AdaptNodeOutputForPreview(node, outputSlot.id, result), nanOutput);
}
else
{
// No valid slots to display, so just show black.
// It's up to each node to error or warn as appropriate.
pixelShaderSurfaceRemap.AppendLine("return 0;");
}
// -------------------------------------
// Extra pixel shader work
var faceSign = new ShaderStringBuilder();
if (shaderGraphRequirements.requiresFaceSign)
{
faceSign.AppendLine(", half FaceSign : VFACE");
}
var res = subShaderTemplate.Replace("${Interpolators}", vertexOutputStruct.ToString());
res = res.Replace("${VertexShader}", vertexShader.ToString());
res = res.Replace("${FaceSign}", faceSign.ToString());
res = res.Replace("${LocalPixelShader}", pixelShader.ToString());
res = res.Replace("${SurfaceInputs}", pixelShaderSurfaceInputs.ToString());
res = res.Replace("${SurfaceOutputRemap}", pixelShaderSurfaceRemap.ToString());
return(res);
}
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);
}
public IEnumerable <string> GetSubshader(PBRMasterNode masterNode, GenerationMode mode)
{
var subShader = new ShaderGenerator();
subShader.AddShaderChunk("SubShader", true);
subShader.AddShaderChunk("{", true);
subShader.Indent();
subShader.AddShaderChunk("Tags{ \"RenderPipeline\" = \"LightweightPipeline\"}", true);
var materialOptions = new SurfaceMaterialOptions();
switch (masterNode.alphaMode)
{
case PBRMasterNode.AlphaMode.Opaque:
materialOptions.srcBlend = SurfaceMaterialOptions.BlendMode.One;
materialOptions.dstBlend = SurfaceMaterialOptions.BlendMode.Zero;
materialOptions.cullMode = SurfaceMaterialOptions.CullMode.Back;
materialOptions.zTest = SurfaceMaterialOptions.ZTest.LEqual;
materialOptions.zWrite = SurfaceMaterialOptions.ZWrite.On;
materialOptions.renderQueue = SurfaceMaterialOptions.RenderQueue.Geometry;
materialOptions.renderType = SurfaceMaterialOptions.RenderType.Opaque;
break;
case PBRMasterNode.AlphaMode.AlphaBlend:
materialOptions.srcBlend = SurfaceMaterialOptions.BlendMode.SrcAlpha;
materialOptions.dstBlend = SurfaceMaterialOptions.BlendMode.OneMinusSrcAlpha;
materialOptions.cullMode = SurfaceMaterialOptions.CullMode.Back;
materialOptions.zTest = SurfaceMaterialOptions.ZTest.LEqual;
materialOptions.zWrite = SurfaceMaterialOptions.ZWrite.Off;
materialOptions.renderQueue = SurfaceMaterialOptions.RenderQueue.Transparent;
materialOptions.renderType = SurfaceMaterialOptions.RenderType.Transparent;
break;
case PBRMasterNode.AlphaMode.AdditiveBlend:
materialOptions.srcBlend = SurfaceMaterialOptions.BlendMode.One;
materialOptions.dstBlend = SurfaceMaterialOptions.BlendMode.One;
materialOptions.cullMode = SurfaceMaterialOptions.CullMode.Back;
materialOptions.zTest = SurfaceMaterialOptions.ZTest.LEqual;
materialOptions.zWrite = SurfaceMaterialOptions.ZWrite.Off;
materialOptions.renderQueue = SurfaceMaterialOptions.RenderQueue.Transparent;
materialOptions.renderType = SurfaceMaterialOptions.RenderType.Transparent;
break;
}
var tagsVisitor = new ShaderGenerator();
materialOptions.GetTags(tagsVisitor);
subShader.AddShaderChunk(tagsVisitor.GetShaderString(0), true);
subShader.AddShaderChunk(
GetShaderPassFromTemplate(
"lightweightPBRForwardPass.template",
masterNode,
masterNode.model == PBRMasterNode.Model.Metallic ? m_ForwardPassMetallic : m_ForwardPassSpecular,
mode,
materialOptions),
true);
var extraPassesTemplateLocation = ShaderGenerator.GetTemplatePath("lightweightPBRExtraPasses.template");
if (File.Exists(extraPassesTemplateLocation))
{
subShader.AddShaderChunk(File.ReadAllText(extraPassesTemplateLocation), true);
}
subShader.Deindent();
subShader.AddShaderChunk("}", true);
return(new[] { subShader.GetShaderString(0) });
}
public void GenerateNodeCode(ShaderGenerator visitor, GraphContext graphContext, GenerationMode generationMode)
{
visitor.AddShaderChunk(precision + " " + GetVariableNameForNode() + " = " + m_constantList[constant].ToString(CultureInfo.InvariantCulture) + ";", 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);
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);
}
switch (masterNode.alphaMode)
{
case PBRMasterNode.AlphaMode.AlphaBlend:
case PBRMasterNode.AlphaMode.AdditiveBlend:
defines.AddShaderChunk("#define _AlphaOut 1", true);
break;
}
if (masterNode.IsSlotConnected(PBRMasterNode.AlphaThresholdSlotId))
{
defines.AddShaderChunk("#define _AlphaClip 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);
}
public void GenerateNodeCode(ShaderGenerator visitor, GenerationMode generationMode)
{
NodeUtils.SlotConfigurationExceptionIfBadConfiguration(this, new[] { InputSlotId }, new[] { OutputSlotId });
string inputValue = string.Format("{0}.xyz", GetSlotValue(InputSlotId, generationMode));
string targetTransformString = "tangentTransform_" + conversion.from.ToString();
string transposeTargetTransformString = "transposeTangent";
string transformString = "";
string tangentTransformSpace = conversion.from.ToString();
bool requiresTangentTransform = false;
bool requiresTransposeTangentTransform = false;
if (conversion.from == CoordinateSpace.World)
{
if (conversion.to == CoordinateSpace.World)
{
transformString = inputValue;
}
else if (conversion.to == CoordinateSpace.Object)
{
transformString = string.Format("TransformWorldToObject({0})", inputValue);
}
else if (conversion.to == CoordinateSpace.Tangent)
{
requiresTangentTransform = true;
transformString = string.Format("TransformWorldToTangent({0}, {1})", inputValue, targetTransformString);
}
else if (conversion.to == CoordinateSpace.View)
{
transformString = string.Format("TransformWorldToView({0})", inputValue);
}
}
else if (conversion.from == CoordinateSpace.Object)
{
if (conversion.to == CoordinateSpace.World)
{
transformString = string.Format("TransformObjectToWorld({0})", inputValue);
}
else if (conversion.to == CoordinateSpace.Object)
{
transformString = inputValue;
}
else if (conversion.to == CoordinateSpace.Tangent)
{
requiresTangentTransform = true;
transformString = string.Format("TransformWorldToTangent(TransformObjectToWorld({0}), {1})", inputValue, targetTransformString);
}
else if (conversion.to == CoordinateSpace.View)
{
transformString = string.Format("TransformWorldToView(TransformObjectToWorld({0}))", inputValue);
}
}
else if (conversion.from == CoordinateSpace.Tangent)
{
if (conversion.to == CoordinateSpace.World)
{
requiresTransposeTangentTransform = true;
transformString = string.Format("mul({0}, {1}).xyz", inputValue, transposeTargetTransformString);
}
else if (conversion.to == CoordinateSpace.Object)
{
requiresTransposeTangentTransform = true;
transformString = string.Format("TransformWorldToObject(mul({0}, {1}).xyz)", inputValue, transposeTargetTransformString);
}
else if (conversion.to == CoordinateSpace.Tangent)
{
transformString = inputValue;
}
else if (conversion.to == CoordinateSpace.View)
{
requiresTransposeTangentTransform = true;
transformString = string.Format("TransformWorldToView(mul({0}, {1}).xyz)", inputValue, transposeTargetTransformString);
}
}
else if (conversion.from == CoordinateSpace.View)
{
if (conversion.to == CoordinateSpace.World)
{
transformString = string.Format("mul(UNITY_MATRIX_I_V, float4({0}, 1)).xyz", inputValue);
}
else if (conversion.to == CoordinateSpace.Object)
{
transformString = string.Format("TransformWorldToObject(mul(UNITY_MATRIX_I_V, float4({0}, 1) ).xyz)", inputValue);
}
else if (conversion.to == CoordinateSpace.Tangent)
{
requiresTangentTransform = true;
tangentTransformSpace = CoordinateSpace.World.ToString();
transformString = string.Format("TransformWorldToTangent(mul(UNITY_MATRIX_I_V, float4({0}, 1) ).xyz, {1})", inputValue, targetTransformString);
}
else if (conversion.to == CoordinateSpace.View)
{
transformString = inputValue;
}
}
if (requiresTransposeTangentTransform)
{
visitor.AddShaderChunk(string.Format("float3x3 {0} = transpose(float3x3(IN.{1}SpaceTangent, IN.{1}SpaceBiTangent, IN.{1}SpaceNormal));", transposeTargetTransformString, CoordinateSpace.World.ToString()), true);
}
else if (requiresTangentTransform)
{
visitor.AddShaderChunk(string.Format("float3x3 {0} = float3x3(IN.{1}SpaceTangent, IN.{1}SpaceBiTangent, IN.{1}SpaceNormal);", targetTransformString, tangentTransformSpace), true);
}
visitor.AddShaderChunk(string.Format("{0} {1} = {2};", NodeUtils.ConvertConcreteSlotValueTypeToString(precision, FindOutputSlot <MaterialSlot>(OutputSlotId).concreteValueType),
GetVariableNameForSlot(OutputSlotId),
transformString), true);
}
public static void GenerateApplicationVertexInputs(ShaderGraphRequirements graphRequiements, ShaderGenerator vertexInputs)
{
vertexInputs.AddShaderChunk("struct GraphVertexInput", false);
vertexInputs.AddShaderChunk("{", false);
vertexInputs.Indent();
vertexInputs.AddShaderChunk("float4 vertex : POSITION;", false);
vertexInputs.AddShaderChunk("float3 normal : NORMAL;", false);
vertexInputs.AddShaderChunk("float4 tangent : TANGENT;", false);
if (graphRequiements.requiresVertexColor)
{
vertexInputs.AddShaderChunk("float4 color : COLOR;", false);
}
foreach (var channel in graphRequiements.requiresMeshUVs.Distinct())
{
vertexInputs.AddShaderChunk(string.Format("float4 texcoord{0} : TEXCOORD{0};", (int)channel), false);
}
vertexInputs.AddShaderChunk("UNITY_VERTEX_INPUT_INSTANCE_ID", true);
vertexInputs.Deindent();
vertexInputs.AddShaderChunk("};", false);
}
public void GenerateNodeCode(ShaderGenerator visitor, GraphContext graphContext, GenerationMode generationMode)
{
visitor.AddShaderChunk(string.Format("{0}4 {1} = {2};", precision, GetVariableNameForSlot(kOutputSlotId), m_ScreenSpaceType.ToValueAsVariable()), true);
}
// Node generations
public virtual void GenerateNodeCode(ShaderGenerator visitor, GraphContext graphContext, GenerationMode generationMode)
{
visitor.AddShaderChunk(string.Format("{0} {1} = {2}_TexelSize.z;", precision, GetVariableNameForSlot(OutputSlotWId), GetSlotValue(TextureInputId, generationMode)), true);
visitor.AddShaderChunk(string.Format("{0} {1} = {2}_TexelSize.w;", precision, GetVariableNameForSlot(OutputSlotHId), GetSlotValue(TextureInputId, generationMode)), true);
}
public void GenerateNodeCode(ShaderGenerator visitor, GenerationMode generationMode)
{
var graph = owner as AbstractMaterialGraph;
var property = graph.properties.FirstOrDefault(x => x.guid == propertyGuid);
if (property == null)
{
return;
}
if (property is FloatShaderProperty)
{
var result = string.Format("{0} {1} = {2};"
, precision
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
else if (property is Vector2ShaderProperty)
{
var result = string.Format("{0}2 {1} = {2};"
, precision
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
else if (property is Vector3ShaderProperty)
{
var result = string.Format("{0}3 {1} = {2};"
, precision
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
else if (property is Vector4ShaderProperty)
{
var result = string.Format("{0}4 {1} = {2};"
, precision
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
else if (property is ColorShaderProperty)
{
var result = string.Format("{0}4 {1} = {2};"
, precision
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
else if (property is IntegerShaderProperty)
{
var result = string.Format("{0} {1} = {2};"
, precision
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
else if (property is SliderShaderProperty)
{
var result = string.Format("{0} {1} = {2};"
, precision
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
else if (property is BooleanShaderProperty)
{
var result = string.Format("{0} {1} = {2};"
, precision
, GetVariableNameForSlot(OutputSlotId)
, property.referenceName);
visitor.AddShaderChunk(result, true);
}
}
public void GenerateNodeCode(ShaderGenerator visitor, GraphContext graphContext, GenerationMode generationMode)
{
visitor.AddShaderChunk(string.Format("{0}4 {1} = IN.{2};", precision, GetVariableNameForSlot(OutputSlotId), m_OutputChannel.GetUVName()), true);
}
public void GenerateNodeCode(ShaderGenerator visitor, GraphContext graphContext, GenerationMode generationMode)
{
visitor.AddShaderChunk(string.Format("{0} {1} = max(0, IN.{2});", precision, GetVariableNameForSlot(OutputSlotId), ShaderGeneratorNames.FaceSign), true);
}
public void GenerateNodeCode(ShaderGenerator visitor, GraphContext graphContext, GenerationMode generationMode)
{
var inputValue = GetSlotValue(InputSlotId, generationMode);
var inputSlot = FindInputSlot <MaterialSlot>(InputSlotId);
var numInputRows = 0;
bool useIndentity = false;
if (inputSlot != null)
{
numInputRows = SlotValueHelper.GetMatrixDimension(inputSlot.concreteValueType);
if (numInputRows > 4)
{
numInputRows = 0;
}
if (!owner.GetEdges(inputSlot.slotReference).Any())
{
numInputRows = 0;
useIndentity = true;
}
}
int concreteRowCount = useIndentity ? 2 : numInputRows;
for (var r = 0; r < 4; r++)
{
string outputValue;
if (r >= numInputRows)
{
outputValue = string.Format("{0}{1}(", precision, concreteRowCount);
for (int c = 0; c < concreteRowCount; c++)
{
if (c != 0)
{
outputValue += ", ";
}
outputValue += Matrix4x4.identity.GetRow(r)[c];
}
outputValue += ")";
}
else
{
switch (m_Axis)
{
case MatrixAxis.Column:
outputValue = string.Format("{0}{1}(", precision, numInputRows);
for (int c = 0; c < numInputRows; c++)
{
if (c != 0)
{
outputValue += ", ";
}
outputValue += string.Format("{0}[{1}].{2}", inputValue, c, s_ComponentList[r]);
}
outputValue += ")";
break;
default:
outputValue = string.Format("{0}[{1}]", inputValue, r);
break;
}
}
visitor.AddShaderChunk(string.Format("{0}{1} {2} = {3};", precision, concreteRowCount, GetVariableNameForSlot(s_OutputSlots[r]), outputValue), true);
}
}
public static void GenerateStandardTransforms(
int interpolatorStartIndex,
int maxInterpolators,
ShaderGenerator interpolators,
ShaderGenerator vertexShader,
ShaderGenerator pixelShader,
ShaderGenerator surfaceInputs,
ShaderGraphRequirements graphRequiements,
ShaderGraphRequirements modelRequiements,
CoordinateSpace preferedCoordinateSpace)
{
if (preferedCoordinateSpace == CoordinateSpace.Tangent)
{
preferedCoordinateSpace = CoordinateSpace.World;
}
// step 1:
// *generate needed interpolators
// *generate output from the vertex shader that writes into these interpolators
// *generate the pixel shader code that declares needed variables in the local scope
var combinedRequierments = graphRequiements.Union(modelRequiements);
int interpolatorIndex = interpolatorStartIndex;
// bitangent needs normal for x product
if (combinedRequierments.requiresNormal > 0 || combinedRequierments.requiresBitangent > 0)
{
var name = preferedCoordinateSpace.ToVariableName(InterpolatorType.Normal);
interpolators.AddShaderChunk(string.Format("float3 {0} : TEXCOORD{1};", name, interpolatorIndex), false);
vertexShader.AddShaderChunk(string.Format("o.{0} = {1};", name, ConvertBetweenSpace("v.normal", CoordinateSpace.Object, preferedCoordinateSpace, InputType.Normal)), false);
pixelShader.AddShaderChunk(string.Format("float3 {0} = normalize(IN.{0});", name), false);
interpolatorIndex++;
}
if (combinedRequierments.requiresTangent > 0 || combinedRequierments.requiresBitangent > 0)
{
var name = preferedCoordinateSpace.ToVariableName(InterpolatorType.Tangent);
interpolators.AddShaderChunk(string.Format("float3 {0} : TEXCOORD{1};", name, interpolatorIndex), false);
vertexShader.AddShaderChunk(string.Format("o.{0} = {1};", name, ConvertBetweenSpace("v.tangent", CoordinateSpace.Object, preferedCoordinateSpace, InputType.Vector)), false);
pixelShader.AddShaderChunk(string.Format("float3 {0} = IN.{0};", name), false);
interpolatorIndex++;
}
if (combinedRequierments.requiresBitangent > 0)
{
var name = preferedCoordinateSpace.ToVariableName(InterpolatorType.BiTangent);
interpolators.AddShaderChunk(string.Format("float3 {0} : TEXCOORD{1};", name, interpolatorIndex), false);
vertexShader.AddShaderChunk(string.Format("o.{0} = normalize(cross(o.{1}, o.{2}.xyz) * {3});",
name,
preferedCoordinateSpace.ToVariableName(InterpolatorType.Normal),
preferedCoordinateSpace.ToVariableName(InterpolatorType.Tangent),
"v.tangent.w"), false);
pixelShader.AddShaderChunk(string.Format("float3 {0} = IN.{0};", name), false);
interpolatorIndex++;
}
if (combinedRequierments.requiresViewDir > 0)
{
var name = preferedCoordinateSpace.ToVariableName(InterpolatorType.ViewDirection);
interpolators.AddShaderChunk(string.Format("float3 {0} : TEXCOORD{1};", name, interpolatorIndex), false);
var worldSpaceViewDir = "SafeNormalize(_WorldSpaceCameraPos.xyz - mul(GetObjectToWorldMatrix(), float4(v.vertex.xyz, 1.0)).xyz)";
vertexShader.AddShaderChunk(string.Format("o.{0} = {1};", name, ConvertBetweenSpace(worldSpaceViewDir, CoordinateSpace.World, preferedCoordinateSpace, InputType.Vector)), false);
pixelShader.AddShaderChunk(string.Format("float3 {0} = normalize(IN.{0});", name), false);
interpolatorIndex++;
}
if (combinedRequierments.requiresPosition > 0)
{
var name = preferedCoordinateSpace.ToVariableName(InterpolatorType.Position);
interpolators.AddShaderChunk(string.Format("float3 {0} : TEXCOORD{1};", name, interpolatorIndex), false);
vertexShader.AddShaderChunk(string.Format("o.{0} = {1};", name, ConvertBetweenSpace("v.vertex", CoordinateSpace.Object, preferedCoordinateSpace, InputType.Position)), false);
pixelShader.AddShaderChunk(string.Format("float3 {0} = IN.{0};", name), false);
interpolatorIndex++;
}
if (combinedRequierments.NeedsTangentSpace())
{
pixelShader.AddShaderChunk(string.Format("float3x3 tangentSpaceTransform = float3x3({0},{1},{2});",
preferedCoordinateSpace.ToVariableName(InterpolatorType.Tangent), preferedCoordinateSpace.ToVariableName(InterpolatorType.BiTangent), preferedCoordinateSpace.ToVariableName(InterpolatorType.Normal)), false);
}
ShaderGenerator.GenerateSpaceTranslationPixelShader(combinedRequierments.requiresNormal, InterpolatorType.Normal, preferedCoordinateSpace,
InputType.Normal, pixelShader, Dimension.Three);
ShaderGenerator.GenerateSpaceTranslationPixelShader(combinedRequierments.requiresTangent, InterpolatorType.Tangent, preferedCoordinateSpace,
InputType.Vector, pixelShader, Dimension.Three);
ShaderGenerator.GenerateSpaceTranslationPixelShader(combinedRequierments.requiresBitangent, InterpolatorType.BiTangent, preferedCoordinateSpace,
InputType.Vector, pixelShader, Dimension.Three);
ShaderGenerator.GenerateSpaceTranslationPixelShader(combinedRequierments.requiresViewDir, InterpolatorType.ViewDirection, preferedCoordinateSpace,
InputType.Vector, pixelShader, Dimension.Three);
ShaderGenerator.GenerateSpaceTranslationPixelShader(combinedRequierments.requiresPosition, InterpolatorType.Position, preferedCoordinateSpace,
InputType.Position, pixelShader, Dimension.Three);
if (combinedRequierments.requiresVertexColor)
{
interpolators.AddShaderChunk(string.Format("float4 {0} : COLOR;", ShaderGeneratorNames.VertexColor), false);
vertexShader.AddShaderChunk(string.Format("o.{0} = v.color;", ShaderGeneratorNames.VertexColor), false);
pixelShader.AddShaderChunk(string.Format("float4 {0} = IN.{0};", ShaderGeneratorNames.VertexColor), false);
}
if (combinedRequierments.requiresScreenPosition)
{
interpolators.AddShaderChunk(string.Format("float4 {0} : TEXCOORD{1};", ShaderGeneratorNames.ScreenPosition, interpolatorIndex), false);
vertexShader.AddShaderChunk(string.Format("o.{0} = ComputeScreenPos(mul(GetWorldToHClipMatrix(), mul(GetObjectToWorldMatrix(), v.vertex)), _ProjectionParams.x);", ShaderGeneratorNames.ScreenPosition), false);
pixelShader.AddShaderChunk(string.Format("float4 {0} = IN.{0};", ShaderGeneratorNames.ScreenPosition), false);
interpolatorIndex++;
}
foreach (var channel in combinedRequierments.requiresMeshUVs.Distinct())
{
interpolators.AddShaderChunk(string.Format("half4 {0} : TEXCOORD{1};", channel.GetUVName(), interpolatorIndex == 0 ? "" : interpolatorIndex.ToString()), false);
vertexShader.AddShaderChunk(string.Format("o.{0} = v.texcoord{1};", channel.GetUVName(), (int)channel), false);
pixelShader.AddShaderChunk(string.Format("float4 {0} = IN.{0};", channel.GetUVName()), false);
interpolatorIndex++;
}
// step 2
// copy the locally defined values into the surface description
// structure using the requirements for ONLY the shader graph
// additional requirements have come from the lighting model
// and are not needed in the shader graph
var replaceString = "surfaceInput.{0} = {0};";
GenerateSpaceTranslationSurfaceInputs(graphRequiements.requiresNormal, InterpolatorType.Normal, surfaceInputs, replaceString);
GenerateSpaceTranslationSurfaceInputs(graphRequiements.requiresTangent, InterpolatorType.Tangent, surfaceInputs, replaceString);
GenerateSpaceTranslationSurfaceInputs(graphRequiements.requiresBitangent, InterpolatorType.BiTangent, surfaceInputs, replaceString);
GenerateSpaceTranslationSurfaceInputs(graphRequiements.requiresViewDir, InterpolatorType.ViewDirection, surfaceInputs, replaceString);
GenerateSpaceTranslationSurfaceInputs(graphRequiements.requiresPosition, InterpolatorType.Position, surfaceInputs, replaceString);
if (graphRequiements.requiresVertexColor)
{
surfaceInputs.AddShaderChunk(string.Format("surfaceInput.{0} = {0};", ShaderGeneratorNames.VertexColor), false);
}
if (graphRequiements.requiresScreenPosition)
{
surfaceInputs.AddShaderChunk(string.Format("surfaceInput.{0} = {0};", ShaderGeneratorNames.ScreenPosition), false);
}
foreach (var channel in graphRequiements.requiresMeshUVs.Distinct())
{
surfaceInputs.AddShaderChunk(string.Format("surfaceInput.{0} = {0};", channel.GetUVName()), false);
}
}
static void ProcessSubGraph(Dictionary <string, SubGraphData> subGraphMap, FunctionRegistry registry, SubGraphData subGraphData, GraphData graph)
{
registry.names.Clear();
subGraphData.functionNames.Clear();
subGraphData.nodeProperties.Clear();
subGraphData.isValid = true;
graph.OnEnable();
graph.messageManager.ClearAll();
graph.ValidateGraph();
var assetPath = AssetDatabase.GUIDToAssetPath(subGraphData.assetGuid);
subGraphData.hlslName = NodeUtils.GetHLSLSafeName(Path.GetFileNameWithoutExtension(assetPath));
subGraphData.inputStructName = $"Bindings_{subGraphData.hlslName}_{subGraphData.assetGuid}";
subGraphData.functionName = $"SG_{subGraphData.hlslName}_{subGraphData.assetGuid}";
subGraphData.path = graph.path;
var outputNode = (SubGraphOutputNode)graph.outputNode;
subGraphData.outputs.Clear();
outputNode.GetInputSlots(subGraphData.outputs);
List <AbstractMaterialNode> nodes = new List <AbstractMaterialNode>();
NodeUtils.DepthFirstCollectNodesFromNode(nodes, outputNode);
subGraphData.effectiveShaderStage = ShaderStageCapability.All;
foreach (var slot in subGraphData.outputs)
{
var stage = NodeUtils.GetEffectiveShaderStageCapability(slot, true);
if (stage != ShaderStageCapability.All)
{
subGraphData.effectiveShaderStage = stage;
break;
}
}
subGraphData.requirements = ShaderGraphRequirements.FromNodes(nodes, subGraphData.effectiveShaderStage, false);
subGraphData.inputs = graph.properties.ToList();
foreach (var node in nodes)
{
if (node.hasError)
{
subGraphData.isValid = false;
registry.ProvideFunction(subGraphData.functionName, sb => { });
return;
}
}
foreach (var node in nodes)
{
if (node is SubGraphNode subGraphNode)
{
var nestedData = subGraphMap[subGraphNode.subGraphGuid];
foreach (var functionName in nestedData.functionNames)
{
registry.names.Add(functionName);
}
}
else if (node is IGeneratesFunction generatesFunction)
{
generatesFunction.GenerateNodeFunction(registry, new GraphContext(subGraphData.inputStructName), GenerationMode.ForReals);
}
}
registry.ProvideFunction(subGraphData.functionName, sb =>
{
var graphContext = new GraphContext(subGraphData.inputStructName);
GraphUtil.GenerateSurfaceInputStruct(sb, subGraphData.requirements, subGraphData.inputStructName);
sb.AppendNewLine();
// Generate arguments... first INPUTS
var arguments = new List <string>();
foreach (var prop in subGraphData.inputs)
{
arguments.Add(string.Format("{0}", prop.GetPropertyAsArgumentString()));
}
// now pass surface inputs
arguments.Add(string.Format("{0} IN", subGraphData.inputStructName));
// Now generate outputs
foreach (var output in subGraphData.outputs)
{
arguments.Add($"out {output.concreteValueType.ToString(outputNode.precision)} {output.shaderOutputName}");
}
// Create the function prototype from the arguments
sb.AppendLine("void {0}({1})"
, subGraphData.functionName
, arguments.Aggregate((current, next) => $"{current}, {next}"));
// now generate the function
using (sb.BlockScope())
{
// Just grab the body from the active nodes
var bodyGenerator = new ShaderGenerator();
foreach (var node in nodes)
{
if (node is IGeneratesBodyCode)
{
(node as IGeneratesBodyCode).GenerateNodeCode(bodyGenerator, graphContext, GenerationMode.ForReals);
}
}
foreach (var slot in subGraphData.outputs)
{
bodyGenerator.AddShaderChunk($"{slot.shaderOutputName} = {outputNode.GetSlotValue(slot.id, GenerationMode.ForReals)};");
}
sb.Append(bodyGenerator.GetShaderString(1));
}
});
subGraphData.functionNames.AddRange(registry.names.Distinct());
var collector = new PropertyCollector();
subGraphData.nodeProperties = collector.properties;
foreach (var node in nodes)
{
node.CollectShaderProperties(collector, GenerationMode.ForReals);
}
subGraphData.OnBeforeSerialize();
}
// Node generations
public virtual void GenerateNodeCode(ShaderGenerator visitor, GraphContext graphContext, GenerationMode generationMode)
{
ProceduralTexture2DInputMaterialSlot slot = FindInputSlot <ProceduralTexture2DInputMaterialSlot>(ProceduralTexture2DId);
// Find Procedural Texture 2D Asset
ProceduralTexture2D proceduralTexture2D = slot.proceduralTexture2D;
var edges = owner.GetEdges(slot.slotReference).ToArray();
if (edges.Any())
{
var fromSocketRef = edges[0].outputSlot;
var fromNode = owner.GetNodeFromGuid <ProceduralTexture2DNode>(fromSocketRef.nodeGuid);
if (fromNode != null)
{
proceduralTexture2D = fromNode.proceduralTexture2D;
}
}
// No Procedural Texture 2D Asset found, break and initialize output values to default white
if (proceduralTexture2D == null || proceduralTexture2D.Tinput == null || proceduralTexture2D.invT == null)
{
visitor.AddShaderChunk(string.Format("{0}4 {1} = float4(1, 1, 1, 1);", precision, GetVariableNameForSlot(OutputSlotRGBAId)), true);
visitor.AddShaderChunk(string.Format("{0} {1} = {2}.r;", precision, GetVariableNameForSlot(OutputSlotRId), GetVariableNameForSlot(OutputSlotRGBAId)), true);
visitor.AddShaderChunk(string.Format("{0} {1} = {2}.g;", precision, GetVariableNameForSlot(OutputSlotGId), GetVariableNameForSlot(OutputSlotRGBAId)), true);
visitor.AddShaderChunk(string.Format("{0} {1} = {2}.b;", precision, GetVariableNameForSlot(OutputSlotBId), GetVariableNameForSlot(OutputSlotRGBAId)), true);
visitor.AddShaderChunk(string.Format("{0} {1} = {2}.a;", precision, GetVariableNameForSlot(OutputSlotAId), GetVariableNameForSlot(OutputSlotRGBAId)), true);
return;
}
// Apply hidden inputs stored in Procedural Texture 2D Asset to shader
FindInputSlot <Texture2DInputMaterialSlot>(TinputId).texture = proceduralTexture2D.Tinput;
FindInputSlot <Texture2DInputMaterialSlot>(InvTinputId).texture = proceduralTexture2D.invT;
FindInputSlot <Vector4MaterialSlot>(CompressionScalersId).value = proceduralTexture2D.compressionScalers;
FindInputSlot <Vector3MaterialSlot>(ColorSpaceOriginId).value = proceduralTexture2D.colorSpaceOrigin;
FindInputSlot <Vector3MaterialSlot>(ColorSpaceVector1Id).value = proceduralTexture2D.colorSpaceVector1;
FindInputSlot <Vector3MaterialSlot>(ColorSpaceVector2Id).value = proceduralTexture2D.colorSpaceVector2;
FindInputSlot <Vector3MaterialSlot>(ColorSpaceVector3Id).value = proceduralTexture2D.colorSpaceVector3;
FindInputSlot <Vector3MaterialSlot>(InputSizeId).value = new Vector3(
proceduralTexture2D.Tinput.width, proceduralTexture2D.Tinput.height, proceduralTexture2D.invT.height);
string code =
@"
float4 {9} = float4(0, 0, 0, 0);
{
float2 uvScaled = {0} * 3.464; // 2 * sqrt(3)
const float2x2 gridToSkewedGrid = float2x2(1.0, 0.0, -0.57735027, 1.15470054);
float2 skewedCoord = mul(gridToSkewedGrid, uvScaled);
int2 baseId = int2(floor(skewedCoord));
float3 temp = float3(frac(skewedCoord), 0);
temp.z = 1.0 - temp.x - temp.y;
float w1, w2, w3;
int2 vertex1, vertex2, vertex3;
if (temp.z > 0.0)
{
w1 = temp.z;
w2 = temp.y;
w3 = temp.x;
vertex1 = baseId;
vertex2 = baseId + int2(0, 1);
vertex3 = baseId + int2(1, 0);
}
else
{
w1 = -temp.z;
w2 = 1.0 - temp.y;
w3 = 1.0 - temp.x;
vertex1 = baseId + int2(1, 1);
vertex2 = baseId + int2(1, 0);
vertex3 = baseId + int2(0, 1);
}
float2 uv1 = {0} + frac(sin(mul(float2x2(127.1, 311.7, 269.5, 183.3), (float2)vertex1)) * 43758.5453);
float2 uv2 = {0} + frac(sin(mul(float2x2(127.1, 311.7, 269.5, 183.3), (float2)vertex2)) * 43758.5453);
float2 uv3 = {0} + frac(sin(mul(float2x2(127.1, 311.7, 269.5, 183.3), (float2)vertex3)) * 43758.5453);
float2 duvdx = ddx({0});
float2 duvdy = ddy({0});
float4 G1 = {1}.SampleGrad({10}, uv1, duvdx, duvdy);
float4 G2 = {1}.SampleGrad({10}, uv2, duvdx, duvdy);
float4 G3 = {1}.SampleGrad({10}, uv3, duvdx, duvdy);
float exponent = 1.0 + {11} * 15.0;
w1 = pow(w1, exponent);
w2 = pow(w2, exponent);
w3 = pow(w3, exponent);
float sum = w1 + w2 + w3;
w1 = w1 / sum;
w2 = w2 / sum;
w3 = w3 / sum;
float4 G = w1 * G1 + w2 * G2 + w3 * G3;
G = G - 0.5;
G = G * rsqrt(w1 * w1 + w2 * w2 + w3 * w3);
G = G * {3};
G = G + 0.5;
duvdx *= {8}.xy;
duvdy *= {8}.xy;
float delta_max_sqr = max(dot(duvdx, duvdx), dot(duvdy, duvdy));
float mml = 0.5 * log2(delta_max_sqr);
float LOD = max(0, mml) / {8}.z;
{9}.r = {2}.SampleLevel(sampler{2}, float2(G.r, LOD), 0).r;
{9}.g = {2}.SampleLevel(sampler{2}, float2(G.g, LOD), 0).g;
{9}.b = {2}.SampleLevel(sampler{2}, float2(G.b, LOD), 0).b;
{9}.a = {2}.SampleLevel(sampler{2}, float2(G.a, LOD), 0).a;
}
" ;
if (proceduralTexture2D != null && proceduralTexture2D.type != ProceduralTexture2D.TextureType.Other)
{
code += "{9}.rgb = {4} + {5} * {9}.r + {6} * {9}.g + {7} * {9}.b;";
}
if (proceduralTexture2D != null && proceduralTexture2D.type == ProceduralTexture2D.TextureType.Normal)
{
code += "{9}.rgb = UnpackNormalmapRGorAG({9});";
}
code = code.Replace("{0}", GetSlotValue(UVInput, generationMode));
code = code.Replace("{1}", GetSlotValue(TinputId, generationMode));
code = code.Replace("{2}", GetSlotValue(InvTinputId, generationMode));
code = code.Replace("{3}", GetSlotValue(CompressionScalersId, generationMode));
code = code.Replace("{4}", GetSlotValue(ColorSpaceOriginId, generationMode));
code = code.Replace("{5}", GetSlotValue(ColorSpaceVector1Id, generationMode));
code = code.Replace("{6}", GetSlotValue(ColorSpaceVector2Id, generationMode));
code = code.Replace("{7}", GetSlotValue(ColorSpaceVector3Id, generationMode));
code = code.Replace("{8}", GetSlotValue(InputSizeId, generationMode));
code = code.Replace("{9}", GetVariableNameForSlot(OutputSlotRGBAId));
var edgesSampler = owner.GetEdges(FindInputSlot <MaterialSlot>(SamplerInput).slotReference);
code = code.Replace("{10}", edgesSampler.Any() ? GetSlotValue(SamplerInput, generationMode) : "sampler" + GetSlotValue(TinputId, generationMode));
code = code.Replace("{11}", GetSlotValue(BlendId, generationMode));
visitor.AddShaderChunk(code, true);
visitor.AddShaderChunk(string.Format("{0} {1} = {2}.r;", precision, GetVariableNameForSlot(OutputSlotRId), GetVariableNameForSlot(OutputSlotRGBAId)), true);
visitor.AddShaderChunk(string.Format("{0} {1} = {2}.g;", precision, GetVariableNameForSlot(OutputSlotGId), GetVariableNameForSlot(OutputSlotRGBAId)), true);
visitor.AddShaderChunk(string.Format("{0} {1} = {2}.b;", precision, GetVariableNameForSlot(OutputSlotBId), GetVariableNameForSlot(OutputSlotRGBAId)), true);
visitor.AddShaderChunk(string.Format("{0} {1} = {2}.a;", precision, GetVariableNameForSlot(OutputSlotAId), GetVariableNameForSlot(OutputSlotRGBAId)), true);
}
