private PassCollection _ParseToPassCollection(XDocument xDoc)
{
PassCollection passCollection = new PassCollection();
foreach (XElement element in xDoc.Root.Elements())
{
passCollection.AddPassContainer(_ParseToPassContainer(element));
}
return(passCollection);
}
public override void Setup(ref TargetSetupContext context)
{
context.AddAssetDependency(kSourceCodeGuid, AssetCollection.Flags.SourceDependency);
context.AddCustomEditorForRenderPipeline("UnityEditor.Rendering.Universal.DecalShaderGraphGUI", typeof(UnityEngine.Rendering.Universal.UniversalRenderPipelineAsset)); // TODO: This should be owned by URP
{
SubShaderDescriptor subShader = SubShaders.Decal;
var passes = new PassCollection();
foreach (var pass in subShader.passes)
{
var passDescriptor = pass.descriptor;
CollectPassRenderState(ref passDescriptor);
passes.Add(passDescriptor, pass.fieldConditions);
}
subShader.passes = passes;
context.AddSubShader(subShader);
}
}
// Configures an HDRP Subshader with a VFX context.
private static SubShaderDescriptor PostProcessSubShader(SubShaderDescriptor subShaderDescriptor, VFXContext context, VFXContextCompiledData data)
{
var attributesStruct = GenerateVFXAttributesStruct(context, VFXAttributeType.Current);
var sourceAttributesStruct = GenerateVFXAttributesStruct(context, VFXAttributeType.Source);
// Defer to VFX to generate various misc. code-gen that ShaderGraph currently can't handle.
// We use the AdditionalCommand descriptors for ShaderGraph generation to splice these in.
// ( i.e. VFX Graph Block Function declaration + calling, Property Mapping, etc. )
GenerateVFXAdditionalCommands(
context, data,
out var loadAttributeDescriptor,
out var blockFunctionDescriptor,
out var blockCallFunctionDescriptor,
out var interpolantsGenerationDescriptor,
out var buildVFXFragInputs,
out var pixelPropertiesAssignDescriptor,
out var defineSpaceDescriptor,
out var parameterBufferDescriptor,
out var additionalDefinesDescriptor,
out var loadPositionAttributeDescriptor,
out var loadCropFactorAttributesDescriptor,
out var loadTexcoordAttributesDescriptor,
out var vertexPropertiesGenerationDescriptor,
out var vertexPropertiesAssignDescriptor
);
// Omit MV or Shadow Pass if disabled on the context.
var filteredPasses = subShaderDescriptor.passes.AsEnumerable();
var outputContext = (VFXAbstractParticleOutput)context;
if (!outputContext.hasMotionVector)
{
filteredPasses = filteredPasses.Where(o => o.descriptor.lightMode != "MotionVectors");
}
if (!outputContext.hasShadowCasting)
{
filteredPasses = filteredPasses.Where(o => o.descriptor.lightMode != "ShadowCaster");
}
var passes = filteredPasses.ToArray();
PassCollection vfxPasses = new PassCollection();
for (int i = 0; i < passes.Length; i++)
{
var passDescriptor = passes[i].descriptor;
// Warning: Touching the structs field may require to manually append the default structs here.
passDescriptor.structs = new StructCollection
{
AttributesMeshVFX, // TODO: Could probably re-use the original HD Attributes Mesh and just ensure Instancing enabled.
AppendVFXInterpolator(HDStructs.VaryingsMeshToPS, context, data),
Structs.SurfaceDescriptionInputs,
Structs.VertexDescriptionInputs,
attributesStruct,
sourceAttributesStruct
};
passDescriptor.pragmas = new PragmaCollection
{
ModifyVertexEntry(passDescriptor.pragmas),
Pragma.MultiCompileInstancing
};
passDescriptor.additionalCommands = new AdditionalCommandCollection
{
loadAttributeDescriptor,
blockFunctionDescriptor,
blockCallFunctionDescriptor,
interpolantsGenerationDescriptor,
buildVFXFragInputs,
pixelPropertiesAssignDescriptor,
defineSpaceDescriptor,
parameterBufferDescriptor,
additionalDefinesDescriptor,
loadPositionAttributeDescriptor,
loadCropFactorAttributesDescriptor,
loadTexcoordAttributesDescriptor,
vertexPropertiesGenerationDescriptor,
vertexPropertiesAssignDescriptor,
GenerateFragInputs(context, data)
};
vfxPasses.Add(passDescriptor, passes[i].fieldConditions);
}
subShaderDescriptor.passes = vfxPasses;
return(subShaderDescriptor);
}
internal static SubShaderDescriptor PostProcessSubShader(SubShaderDescriptor subShaderDescriptor, VFXContext context, VFXContextCompiledData data)
{
var srp = VFXLibrary.currentSRPBinder;
if (srp == null)
{
return(subShaderDescriptor);
}
var shaderGraphSRPInfo = srp.GetShaderGraphDescriptor(context, data);
var attributesStruct = GenerateVFXAttributesStruct(context, VFXAttributeType.Current);
var sourceAttributesStruct = GenerateVFXAttributesStruct(context, VFXAttributeType.Source);
// Defer to VFX to generate various misc. code-gen that ShaderGraph currently can't handle.
// We use the AdditionalCommand descriptors for ShaderGraph generation to splice these in.
// ( i.e. VFX Graph Block Function declaration + calling, Property Mapping, etc. )
GenerateVFXAdditionalCommands(
context, srp, shaderGraphSRPInfo, data,
out var srpCommonInclude,
out var loadAttributeDescriptor,
out var blockFunctionDescriptor,
out var blockCallFunctionDescriptor,
out var interpolantsGenerationDescriptor,
out var buildVFXFragInputs,
out var pixelPropertiesAssignDescriptor,
out var defineSpaceDescriptor,
out var parameterBufferDescriptor,
out var additionalDefinesDescriptor,
out var loadPositionAttributeDescriptor,
out var loadCropFactorAttributesDescriptor,
out var loadTexcoordAttributesDescriptor,
out var vertexPropertiesGenerationDescriptor,
out var vertexPropertiesAssignDescriptor
);
// Omit MV or Shadow Pass if disabled on the context.
var filteredPasses = subShaderDescriptor.passes.AsEnumerable();
var outputContext = (VFXAbstractParticleOutput)context;
if (!outputContext.hasMotionVector)
{
filteredPasses = filteredPasses.Where(o => o.descriptor.lightMode != "MotionVectors");
}
if (!outputContext.hasShadowCasting)
{
filteredPasses = filteredPasses.Where(o => o.descriptor.lightMode != "ShadowCaster");
}
var passes = filteredPasses.ToArray();
PassCollection vfxPasses = new PassCollection();
for (int i = 0; i < passes.Length; i++)
{
var passDescriptor = passes[i].descriptor;
passDescriptor.pragmas = ApplyPragmaReplacement(passDescriptor.pragmas, shaderGraphSRPInfo);
// Warning: We are replacing the struct provided in the regular pass. It is ok as for now the VFX editor don't support
// tessellation or raytracing
passDescriptor.structs = new StructCollection();
passDescriptor.structs.Add(shaderGraphSRPInfo.structs);
passDescriptor.structs.Add(attributesStruct);
passDescriptor.structs.Add(sourceAttributesStruct);
// Add additional VFX dependencies
passDescriptor.fieldDependencies = passDescriptor.fieldDependencies == null ? new DependencyCollection() : new DependencyCollection {
passDescriptor.fieldDependencies
}; // Duplicate fieldDependencies to avoid side effects (static list modification)
passDescriptor.fieldDependencies.Add(shaderGraphSRPInfo.fieldDependencies);
passDescriptor.additionalCommands = new AdditionalCommandCollection
{
srpCommonInclude,
loadAttributeDescriptor,
blockFunctionDescriptor,
blockCallFunctionDescriptor,
interpolantsGenerationDescriptor,
buildVFXFragInputs,
pixelPropertiesAssignDescriptor,
defineSpaceDescriptor,
parameterBufferDescriptor,
additionalDefinesDescriptor,
loadPositionAttributeDescriptor,
loadCropFactorAttributesDescriptor,
loadTexcoordAttributesDescriptor,
vertexPropertiesGenerationDescriptor,
vertexPropertiesAssignDescriptor,
GenerateFragInputs(context, data)
};
vfxPasses.Add(passDescriptor, passes[i].fieldConditions);
}
subShaderDescriptor.passes = vfxPasses;
return(subShaderDescriptor);
}
// Configures an HDRP Subshader with a VFX context.
private static SubShaderDescriptor PostProcessSubShader(SubShaderDescriptor subShaderDescriptor, VFXContext context, VFXContextCompiledData data)
{
var attributesStruct = GenerateVFXAttributesStruct(context, VFXAttributeType.Current);
var sourceAttributesStruct = GenerateVFXAttributesStruct(context, VFXAttributeType.Source);
// Defer to VFX to generate various misc. code-gen that ShaderGraph currently can't handle.
// We use the AdditionalCommand descriptors for ShaderGraph generation to splice these in.
// ( i.e. VFX Graph Block Function declaration + calling, Property Mapping, etc. )
GenerateVFXAdditionalCommands(
context, data,
out var loadAttributeDescriptor,
out var blockFunctionDescriptor,
out var blockCallFunctionDescriptor,
out var interpolantsGenerationDescriptor,
out var buildVFXFragInputs,
out var pixelPropertiesAssignDescriptor,
out var defineSpaceDescriptor,
out var parameterBufferDescriptor,
out var additionalDefinesDescriptor,
out var loadPositionAttributeDescriptor,
out var loadCropFactorAttributesDescriptor,
out var loadTexcoordAttributesDescriptor,
out var vertexPropertiesGenerationDescriptor,
out var vertexPropertiesAssignDescriptor
);
// Omit MV or Shadow Pass if disabled on the context.
var filteredPasses = subShaderDescriptor.passes.AsEnumerable();
var outputContext = (VFXAbstractParticleOutput)context;
if (!outputContext.hasMotionVector)
{
filteredPasses = filteredPasses.Where(o => o.descriptor.lightMode != "MotionVectors");
}
if (!outputContext.hasShadowCasting)
{
filteredPasses = filteredPasses.Where(o => o.descriptor.lightMode != "ShadowCaster");
}
var passes = filteredPasses.ToArray();
PassCollection vfxPasses = new PassCollection();
for (int i = 0; i < passes.Length; i++)
{
var passDescriptor = passes[i].descriptor;
// Warning: We are replacing the struct provided in the regular pass. It is ok as for now the VFX editor don't support
// tessellation or raytracing
passDescriptor.structs = new StructCollection
{
AttributesMeshVFX, // TODO: Could probably re-use the original HD Attributes Mesh and just ensure Instancing enabled.
Structs.VertexDescriptionInputs,
Structs.SurfaceDescriptionInputs,
AppendVFXInterpolator(HDStructs.VaryingsMeshToPS, context, data),
attributesStruct,
sourceAttributesStruct
};
// Add additional VFX dependencies
passDescriptor.fieldDependencies = passDescriptor.fieldDependencies == null ? new DependencyCollection() : new DependencyCollection {
passDescriptor.fieldDependencies
}; // Duplicate fieldDependencies to avoid side effects (static list modification)
passDescriptor.fieldDependencies.Add(VFXHDRPSubTarget.ElementSpaceDependencies);
passDescriptor.additionalCommands = new AdditionalCommandCollection
{
loadAttributeDescriptor,
blockFunctionDescriptor,
blockCallFunctionDescriptor,
interpolantsGenerationDescriptor,
buildVFXFragInputs,
pixelPropertiesAssignDescriptor,
defineSpaceDescriptor,
parameterBufferDescriptor,
additionalDefinesDescriptor,
loadPositionAttributeDescriptor,
loadCropFactorAttributesDescriptor,
loadTexcoordAttributesDescriptor,
vertexPropertiesGenerationDescriptor,
vertexPropertiesAssignDescriptor,
GenerateFragInputs(context, data)
};
vfxPasses.Add(passDescriptor, passes[i].fieldConditions);
}
subShaderDescriptor.passes = vfxPasses;
return(subShaderDescriptor);
}
