// For now, this is only used by the mesh op. If this logic needs to be
// accessed elsewhere, it should move down into usdKatana.
static void
_CreateFaceSetsFromFaceSetAPI(
const UsdPrim& prim,
const PxrUsdKatanaUsdInPrivateData &data,
FnKat::GeolibCookInterface& interface)
{
UsdGeomFaceSetAPI faceSet = UsdShadeMaterial::GetMaterialFaceSet(prim);
bool isPartition = faceSet.GetIsPartition();;
if (!isPartition) {
TF_WARN("Found face set on prim <%s> that is not a partition.",
prim.GetPath().GetText());
// continue here?
}
const double currentTime = data.GetCurrentTime();
VtIntArray faceCounts, faceIndices;
faceSet.GetFaceCounts(&faceCounts, currentTime);
faceSet.GetFaceIndices(&faceIndices, currentTime);
SdfPathVector bindingTargets;
faceSet.GetBindingTargets(&bindingTargets);
size_t faceSetIdxStart = 0;
for(size_t faceSetIdx = 0; faceSetIdx < faceCounts.size(); ++faceSetIdx) {
size_t faceCount = faceCounts[faceSetIdx];
FnKat::GroupBuilder faceSetAttrs;
faceSetAttrs.set("type", FnKat::StringAttribute("faceset"));
faceSetAttrs.set("materialAssign", FnKat::StringAttribute(
PxrUsdKatanaUtils::ConvertUsdMaterialPathToKatLocation(
bindingTargets[faceSetIdx], data)));
FnKat::IntBuilder facesBuilder;
{
std::vector<int> faceIndicesVec(faceCount);
for (size_t faceIndicesIdx = 0; faceIndicesIdx < faceCount; ++faceIndicesIdx)
{
faceIndicesVec[faceIndicesIdx] =
faceIndices[faceSetIdxStart + faceIndicesIdx];
}
faceSetIdxStart += faceCount;
facesBuilder.set(faceIndicesVec);
}
faceSetAttrs.set("geometry.faces", facesBuilder.build());
std::string faceSetName = TfStringPrintf("faceset_%zu", faceSetIdx);
FnKat::GroupBuilder staticSceneCreateAttrs;
staticSceneCreateAttrs.set("a", faceSetAttrs.build());
interface.createChild(
faceSetName,
"StaticSceneCreate",
staticSceneCreateAttrs.build());
}
}
void
PxrUsdKatanaReadPointInstancer(
const UsdGeomPointInstancer& instancer,
const PxrUsdKatanaUsdInPrivateData& data,
PxrUsdKatanaAttrMap& instancerAttrMap,
PxrUsdKatanaAttrMap& sourcesAttrMap,
PxrUsdKatanaAttrMap& instancesAttrMap,
PxrUsdKatanaAttrMap& inputAttrMap)
{
const double currentTime = data.GetCurrentTime();
PxrUsdKatanaReadXformable(instancer, data, instancerAttrMap);
// Get primvars for setting later. Unfortunatley, the only way to get them
// out of the attr map is to build it, which will cause its contents to be
// cleared. We'll need to restore its contents before continuing.
//
FnKat::GroupAttribute instancerAttrs = instancerAttrMap.build();
FnKat::GroupAttribute primvarAttrs =
instancerAttrs.getChildByName("geometry.arbitrary");
for (int64_t i = 0; i < instancerAttrs.getNumberOfChildren(); ++i)
{
instancerAttrMap.set(instancerAttrs.getChildName(i),
instancerAttrs.getChildByIndex(i));
}
instancerAttrMap.set("type", FnKat::StringAttribute("usd point instancer"));
const std::string fileName = data.GetUsdInArgs()->GetFileName();
instancerAttrMap.set("info.usd.fileName", FnKat::StringAttribute(fileName));
FnKat::GroupAttribute inputAttrs = inputAttrMap.build();
const std::string katOutputPath = FnKat::StringAttribute(
inputAttrs.getChildByName("outputLocationPath")).getValue("", false);
if (katOutputPath.empty())
{
_LogAndSetError(instancerAttrMap, "No output location path specified");
return;
}
//
// Validate instancer data.
//
const std::string instancerPath = instancer.GetPath().GetString();
UsdStageWeakPtr stage = instancer.GetPrim().GetStage();
// Prototypes (required)
//
SdfPathVector protoPaths;
instancer.GetPrototypesRel().GetTargets(&protoPaths);
if (protoPaths.empty())
{
_LogAndSetError(instancerAttrMap, "Instancer has no prototypes");
return;
}
_PathToPrimMap primCache;
for (auto protoPath : protoPaths) {
const UsdPrim &protoPrim = stage->GetPrimAtPath(protoPath);
primCache[protoPath] = protoPrim;
}
// Indices (required)
//
VtIntArray protoIndices;
if (!instancer.GetProtoIndicesAttr().Get(&protoIndices, currentTime))
{
_LogAndSetError(instancerAttrMap, "Instancer has no prototype indices");
return;
}
const size_t numInstances = protoIndices.size();
if (numInstances == 0)
{
_LogAndSetError(instancerAttrMap, "Instancer has no prototype indices");
return;
}
for (auto protoIndex : protoIndices)
{
if (protoIndex < 0 || static_cast<size_t>(protoIndex) >= protoPaths.size())
{
_LogAndSetError(instancerAttrMap, TfStringPrintf(
"Out of range prototype index %d", protoIndex));
return;
}
}
// Mask (optional)
//
std::vector<bool> pruneMaskValues =
instancer.ComputeMaskAtTime(currentTime);
if (!pruneMaskValues.empty() and pruneMaskValues.size() != numInstances)
{
_LogAndSetError(instancerAttrMap,
"Mismatch in length of indices and mask");
return;
}
// Positions (required)
//
UsdAttribute positionsAttr = instancer.GetPositionsAttr();
if (!positionsAttr.HasValue())
{
_LogAndSetError(instancerAttrMap, "Instancer has no positions");
return;
}
//
// Compute instance transform matrices.
//
const double timeCodesPerSecond = stage->GetTimeCodesPerSecond();
// Gather frame-relative sample times and add them to the current time to
// generate absolute sample times.
//
const std::vector<double> &motionSampleTimes =
data.GetMotionSampleTimes(positionsAttr);
const size_t sampleCount = motionSampleTimes.size();
std::vector<UsdTimeCode> sampleTimes(sampleCount);
for (size_t a = 0; a < sampleCount; ++a)
{
sampleTimes[a] = UsdTimeCode(currentTime + motionSampleTimes[a]);
}
// Get velocityScale from the opArgs.
//
float velocityScale = FnKat::FloatAttribute(
inputAttrs.getChildByName("opArgs.velocityScale")).getValue(1.0f, false);
// XXX Replace with UsdGeomPointInstancer::ComputeInstanceTransformsAtTime.
//
std::vector<std::vector<GfMatrix4d>> xformSamples(sampleCount);
const size_t numXformSamples =
_ComputeInstanceTransformsAtTime(xformSamples, instancer, sampleTimes,
UsdTimeCode(currentTime), timeCodesPerSecond, numInstances,
positionsAttr, velocityScale);
if (numXformSamples == 0) {
_LogAndSetError(instancerAttrMap, "Could not compute "
"sample/topology-invarying instance "
"transform matrix");
return;
}
//
// Compute prototype bounds.
//
bool aggregateBoundsValid = false;
std::vector<double> aggregateBounds;
// XXX Replace with UsdGeomPointInstancer::ComputeExtentAtTime.
//
VtVec3fArray aggregateExtent;
if (_ComputeExtentAtTime(
aggregateExtent, data.GetUsdInArgs(), xformSamples,
motionSampleTimes, protoIndices, protoPaths, primCache,
pruneMaskValues)) {
aggregateBoundsValid = true;
aggregateBounds.resize(6);
aggregateBounds[0] = aggregateExtent[0][0]; // min x
aggregateBounds[1] = aggregateExtent[1][0]; // max x
aggregateBounds[2] = aggregateExtent[0][1]; // min y
aggregateBounds[3] = aggregateExtent[1][1]; // max y
aggregateBounds[4] = aggregateExtent[0][2]; // min z
aggregateBounds[5] = aggregateExtent[1][2]; // max z
}
//
// Build sources. Keep track of which instances use them.
//
FnGeolibServices::StaticSceneCreateOpArgsBuilder sourcesBldr(false);
std::vector<int> instanceIndices;
instanceIndices.reserve(numInstances);
std::vector<std::string> instanceSources;
instanceSources.reserve(protoPaths.size());
std::map<std::string, int> instanceSourceIndexMap;
std::vector<int> omitList;
omitList.reserve(numInstances);
std::map<SdfPath, std::string> protoPathsToKatPaths;
for (size_t i = 0; i < numInstances; ++i)
{
int index = protoIndices[i];
// Check to see if we are pruned.
//
bool isPruned = (!pruneMaskValues.empty() and
pruneMaskValues[i] == false);
if (isPruned)
{
omitList.push_back(i);
}
const SdfPath &protoPath = protoPaths[index];
// Compute the full (Katana) path to this prototype.
//
std::string fullProtoPath;
std::map<SdfPath, std::string>::const_iterator pptkpIt =
protoPathsToKatPaths.find(protoPath);
if (pptkpIt != protoPathsToKatPaths.end())
{
fullProtoPath = pptkpIt->second;
}
else
{
_PathToPrimMap::const_iterator pcIt = primCache.find(protoPath);
const UsdPrim &protoPrim = pcIt->second;
if (!protoPrim) {
continue;
}
// Determine where (what path) to start building the prototype prim
// such that its material bindings will be preserved. This could be
// the prototype path itself or an ancestor path.
//
SdfPathVector commonPrefixes;
UsdRelationship materialBindingsRel =
UsdShadeMaterial::GetBindingRel(protoPrim);
auto assetAPI = UsdModelAPI(protoPrim);
std::string assetName;
bool isReferencedModelPrim =
assetAPI.IsModel() and assetAPI.GetAssetName(&assetName);
if (!materialBindingsRel or isReferencedModelPrim)
{
// The prim has no material bindings or is a referenced model
// prim (meaning that materials are defined below it); start
// building at the prototype path.
//
commonPrefixes.push_back(protoPath);
}
else
{
SdfPathVector materialPaths;
materialBindingsRel.GetForwardedTargets(&materialPaths);
for (auto materialPath : materialPaths)
{
const SdfPath &commonPrefix =
protoPath.GetCommonPrefix(materialPath);
if (commonPrefix.GetString() == "/")
{
// XXX Unhandled case.
// The prototype prim and its material are not under the
// same parent; start building at the prototype path
// (although it is likely that bindings will be broken).
//
commonPrefixes.push_back(protoPath);
}
else
{
// Start building at the common ancestor between the
// prototype prim and its material.
//
commonPrefixes.push_back(commonPrefix);
}
}
}
// XXX Unhandled case.
// We'll use the first common ancestor even if there is more than
// one (which shouldn't appen if the prototype prim and its bindings
// are under the same parent).
//
SdfPath::RemoveDescendentPaths(&commonPrefixes);
const std::string buildPath = commonPrefixes[0].GetString();
// See if the path is a child of the point instancer. If so, we'll
// match its hierarchy. If not, we'll put it under a 'prototypes'
// group.
//
std::string relBuildPath;
if (pystring::startswith(buildPath, instancerPath + "/"))
{
relBuildPath = pystring::replace(
buildPath, instancerPath + "/", "");
}
else
{
relBuildPath = "prototypes/" +
FnGeolibUtil::Path::GetLeafName(buildPath);
}
// Start generating the full path to the prototype.
//
fullProtoPath = katOutputPath + "/" + relBuildPath;
// Make the common ancestor our instance source.
//
sourcesBldr.setAttrAtLocation(relBuildPath,
"type", FnKat::StringAttribute("instance source"));
// Author a tracking attr.
//
sourcesBldr.setAttrAtLocation(relBuildPath,
"info.usd.sourceUsdPath",
FnKat::StringAttribute(buildPath));
// Tell the BuildIntermediate op to start building at the common
// ancestor.
//
sourcesBldr.setAttrAtLocation(relBuildPath,
"usdPrimPath", FnKat::StringAttribute(buildPath));
sourcesBldr.setAttrAtLocation(relBuildPath,
"usdPrimName", FnKat::StringAttribute("geo"));
if (protoPath.GetString() != buildPath)
{
// Finish generating the full path to the prototype.
//
fullProtoPath = fullProtoPath + "/geo" + pystring::replace(
protoPath.GetString(), buildPath, "");
}
// Create a mapping that will link the instance's index to its
// prototype's full path.
//
instanceSourceIndexMap[fullProtoPath] = instanceSources.size();
instanceSources.push_back(fullProtoPath);
// Finally, store the full path in the map so we won't have to do
// this work again.
//
protoPathsToKatPaths[protoPath] = fullProtoPath;
}
instanceIndices.push_back(instanceSourceIndexMap[fullProtoPath]);
}
//
// Build instances.
//
FnGeolibServices::StaticSceneCreateOpArgsBuilder instancesBldr(false);
instancesBldr.createEmptyLocation("instances", "instance array");
instancesBldr.setAttrAtLocation("instances",
"geometry.instanceSource",
FnKat::StringAttribute(instanceSources, 1));
instancesBldr.setAttrAtLocation("instances",
"geometry.instanceIndex",
FnKat::IntAttribute(&instanceIndices[0],
instanceIndices.size(), 1));
FnKat::DoubleBuilder instanceMatrixBldr(16);
for (size_t a = 0; a < numXformSamples; ++a) {
double relSampleTime = motionSampleTimes[a];
// Shove samples into the builder at the frame-relative sample time. If
// motion is backwards, make sure to reverse time samples.
std::vector<double> &matVec = instanceMatrixBldr.get(
data.IsMotionBackward()
? PxrUsdKatanaUtils::ReverseTimeSample(relSampleTime)
: relSampleTime);
matVec.reserve(16 * numInstances);
for (size_t i = 0; i < numInstances; ++i) {
GfMatrix4d instanceXform = xformSamples[a][i];
const double *matArray = instanceXform.GetArray();
for (int j = 0; j < 16; ++j) {
matVec.push_back(matArray[j]);
}
}
}
instancesBldr.setAttrAtLocation("instances",
"geometry.instanceMatrix", instanceMatrixBldr.build());
if (!omitList.empty())
{
instancesBldr.setAttrAtLocation("instances",
"geometry.omitList",
FnKat::IntAttribute(&omitList[0], omitList.size(), 1));
}
instancesBldr.setAttrAtLocation("instances",
"geometry.pointInstancerId",
FnKat::StringAttribute(katOutputPath));
//
// Transfer primvars.
//
FnKat::GroupBuilder instancerPrimvarsBldr;
FnKat::GroupBuilder instancesPrimvarsBldr;
for (int64_t i = 0; i < primvarAttrs.getNumberOfChildren(); ++i)
{
const std::string primvarName = primvarAttrs.getChildName(i);
// Use "point" scope for the instancer.
instancerPrimvarsBldr.set(primvarName, primvarAttrs.getChildByIndex(i));
instancerPrimvarsBldr.set(primvarName + ".scope",
FnKat::StringAttribute("point"));
// User "primitive" scope for the instances.
instancesPrimvarsBldr.set(primvarName, primvarAttrs.getChildByIndex(i));
instancesPrimvarsBldr.set(primvarName + ".scope",
FnKat::StringAttribute("primitive"));
}
instancerAttrMap.set("geometry.arbitrary", instancerPrimvarsBldr.build());
instancesBldr.setAttrAtLocation("instances",
"geometry.arbitrary", instancesPrimvarsBldr.build());
//
// Set the final aggregate bounds.
//
if (aggregateBoundsValid)
{
instancerAttrMap.set("bound", FnKat::DoubleAttribute(&aggregateBounds[0], 6, 2));
}
//
// Set proxy attrs.
//
instancerAttrMap.set("proxies", PxrUsdKatanaUtils::GetViewerProxyAttr(data));
//
// Transfer builder results to our attr maps.
//
FnKat::GroupAttribute sourcesAttrs = sourcesBldr.build();
for (int64_t i = 0; i < sourcesAttrs.getNumberOfChildren(); ++i)
{
sourcesAttrMap.set(
sourcesAttrs.getChildName(i),
sourcesAttrs.getChildByIndex(i));
}
FnKat::GroupAttribute instancesAttrs = instancesBldr.build();
for (int64_t i = 0; i < instancesAttrs.getNumberOfChildren(); ++i)
{
instancesAttrMap.set(
instancesAttrs.getChildName(i),
instancesAttrs.getChildByIndex(i));
}
}
void
PxrUsdKatanaReadLightFilter(
const UsdLuxLightFilter& lightFilter,
const PxrUsdKatanaUsdInPrivateData& data,
PxrUsdKatanaAttrMap& attrs)
{
const UsdPrim filterPrim = lightFilter.GetPrim();
const SdfPath primPath = filterPrim.GetPath();
const double currentTime = data.GetCurrentTime();
GroupBuilder materialBuilder;
GroupBuilder filterBuilder;
_UsdBuilder usdBuilder = {filterBuilder, currentTime};
if (UsdRiLightFilterAPI f = UsdRiLightFilterAPI(filterPrim)) {
usdBuilder
.Set("density", f.GetRiDensityAttr())
.Set("intensity", f.GetRiIntensityAttr())
.Set("exposure", f.GetRiExposureAttr())
.Set("invert", f.GetRiInvertAttr())
.Set("diffuse", f.GetRiDiffuseAttr())
.Set("specular", f.GetRiSpecularAttr())
;
// combineMode
{
VtValue val;
UsdAttribute attr = f.GetRiCombineModeAttr();
if (attr.IsValid() && attr.HasAuthoredValueOpinion()
&& attr.Get(&val, currentTime) && val.IsHolding<TfToken>()) {
TfToken t = val.Get<TfToken>();
if (t == UsdRiTokens->multiply) {
filterBuilder.set("combineMode",
FnKat::StringAttribute("mult"));
} else if (t == UsdRiTokens->max) {
filterBuilder.set("combineMode",
FnKat::StringAttribute("max"));
} else if (t == UsdRiTokens->min) {
filterBuilder.set("combineMode",
FnKat::StringAttribute("min"));
} else if (t == UsdRiTokens->screen) {
filterBuilder.set("combineMode",
FnKat::StringAttribute("screen"));
}
}
}
}
if (UsdRiPxrIntMultLightFilter f = UsdRiPxrIntMultLightFilter(filterPrim)) {
materialBuilder.set("prmanLightfilterShader",
FnKat::StringAttribute("PxrIntMultLightFilter"));
}
if (UsdRiPxrBarnLightFilter f = UsdRiPxrBarnLightFilter(filterPrim)) {
materialBuilder.set("prmanLightfilterShader",
FnKat::StringAttribute("PxrBarnLightFilter"));
usdBuilder
.Set("directional", f.GetAnalyticDirectionalAttr())
.Set("shearX", f.GetAnalyticShearXAttr())
.Set("shearY", f.GetAnalyticShearYAttr())
.Set("apex", f.GetAnalyticApexAttr())
.Set("useLightDirection", f.GetAnalyticDirectionalAttr())
.Set("width", f.GetWidthAttr())
.Set("height", f.GetHeightAttr())
.Set("radius", f.GetRadiusAttr())
.Set("edge", f.GetEdgeThicknessAttr())
.Set("scaleWidth", f.GetScaleWidthAttr())
.Set("scaleHeight", f.GetScaleHeightAttr())
.Set("left", f.GetRefineLeftAttr())
.Set("right", f.GetRefineRightAttr())
.Set("top", f.GetRefineTopAttr())
.Set("bottom", f.GetRefineBottomAttr())
.Set("leftEdge", f.GetEdgeLeftAttr())
.Set("rightEdge", f.GetEdgeRightAttr())
.Set("topEdge", f.GetEdgeTopAttr())
.Set("bottomEdge", f.GetEdgeBottomAttr())
.Set("densityNear", f.GetAnalyticDensityNearDistanceAttr())
.Set("densityNearVal", f.GetAnalyticDensityNearValueAttr())
.Set("densityFar", f.GetAnalyticDensityFarDistanceAttr())
.Set("densityFarVal", f.GetAnalyticDensityFarValueAttr())
.Set("densityPow", f.GetAnalyticDensityExponentAttr())
;
// barnMode
{
VtValue val;
UsdAttribute attr = f.GetBarnModeAttr();
if (attr.IsValid() && attr.HasAuthoredValueOpinion()
&& attr.Get(&val, currentTime) && val.IsHolding<TfToken>()) {
TfToken t = val.Get<TfToken>();
if (t == UsdRiTokens->analytic) {
filterBuilder.set("barnMode", FnKat::IntAttribute(1));
} else if (t == UsdRiTokens->physical) {
filterBuilder.set("barnMode", FnKat::IntAttribute(0));
}
}
}
// preBarn
{
VtValue val;
UsdAttribute attr = f.GetPreBarnEffectAttr();
if (attr.IsValid() && attr.HasAuthoredValueOpinion()
&& attr.Get(&val, currentTime) && val.IsHolding<TfToken>()) {
TfToken t = val.Get<TfToken>();
if (t == UsdRiTokens->noEffect) {
filterBuilder.set("preBarn", FnKat::IntAttribute(0));
} else if (t == UsdRiTokens->cone) {
filterBuilder.set("preBarn", FnKat::IntAttribute(1));
} else if (t == UsdRiTokens->noLight) {
filterBuilder.set("preBarn", FnKat::IntAttribute(2));
}
}
}
}
if (UsdRiPxrCookieLightFilter f = UsdRiPxrCookieLightFilter(filterPrim)) {
materialBuilder.set("prmanLightfilterShader",
FnKat::StringAttribute("PxrCookieLightFilter"));
// cookieMode
{
VtValue val;
UsdAttribute attr = f.GetCookieModeAttr();
if (attr.IsValid() && attr.HasAuthoredValueOpinion()
&& attr.Get(&val, currentTime) && val.IsHolding<TfToken>()) {
TfToken t = val.Get<TfToken>();
if (t == UsdRiTokens->analytic) {
filterBuilder.set("cookieMode", FnKat::IntAttribute(1));
} else if (t == UsdRiTokens->physical) {
filterBuilder.set("cookieMode", FnKat::IntAttribute(0));
}
}
}
// tileMode
{
VtValue val;
UsdAttribute attr = f.GetTextureWrapModeAttr();
if (attr.IsValid() && attr.HasAuthoredValueOpinion()
&& attr.Get(&val, currentTime) && val.IsHolding<TfToken>()) {
TfToken t = val.Get<TfToken>();
if (t == UsdRiTokens->off) {
filterBuilder.set("tileMode", FnKat::IntAttribute(0));
} else if (t == UsdRiTokens->repeat) {
filterBuilder.set("tileMode", FnKat::IntAttribute(2));
} else if (t == UsdRiTokens->clamp) {
filterBuilder.set("tileMode", FnKat::IntAttribute(1));
}
}
}
usdBuilder
.Set("map", f.GetTextureMapAttr())
.Set("fillColor", f.GetTextureFillColorAttr())
.Set("width", f.GetWidthAttr())
.Set("height", f.GetHeightAttr())
.Set("directional", f.GetAnalyticDirectionalAttr())
.Set("shearX", f.GetAnalyticShearXAttr())
.Set("shearY", f.GetAnalyticShearYAttr())
.Set("apex", f.GetAnalyticApexAttr())
.Set("useLightDirection", f.GetAnalyticDirectionalAttr())
.Set("invertU", f.GetTextureInvertUAttr())
.Set("invertV", f.GetTextureInvertVAttr())
.Set("scaleU", f.GetTextureScaleUAttr())
.Set("scaleV", f.GetTextureScaleVAttr())
.Set("offsetU", f.GetTextureOffsetUAttr())
.Set("offsetV", f.GetTextureOffsetVAttr())
.Set("blur", f.GetAnalyticBlurAmountAttr())
.Set("sBlurMult", f.GetAnalyticBlurSMultAttr())
.Set("tBlurMult", f.GetAnalyticBlurTMultAttr())
.Set("blurNearDist", f.GetAnalyticBlurNearDistanceAttr())
.Set("blurNearVal", f.GetAnalyticBlurNearValueAttr())
.Set("blurFarDist", f.GetAnalyticBlurFarDistanceAttr())
.Set("blurFarVal", f.GetAnalyticBlurFarValueAttr())
.Set("blurMidpoint", f.GetAnalyticBlurMidpointAttr())
.Set("blurMidVal", f.GetAnalyticBlurMidValueAttr())
.Set("blurPow", f.GetAnalyticBlurExponentAttr())
.Set("densityNearDist", f.GetAnalyticDensityNearDistanceAttr())
.Set("densityNearVal", f.GetAnalyticDensityNearValueAttr())
.Set("densityFarDist", f.GetAnalyticDensityFarDistanceAttr())
.Set("densityFarVal", f.GetAnalyticDensityFarValueAttr())
.Set("densityMidpoint", f.GetAnalyticDensityMidpointAttr())
.Set("densityMidVal", f.GetAnalyticDensityMidValueAttr())
.Set("densityPow", f.GetAnalyticDensityExponentAttr())
.Set("saturation", f.GetColorSaturationAttr())
.Set("midpoint", f.GetColorMidpointAttr())
.Set("contrast", f.GetColorContrastAttr())
.Set("whitepoint", f.GetColorWhitepointAttr())
.Set("tint", f.GetColorTintAttr())
;
}
if (UsdRiPxrRampLightFilter f = UsdRiPxrRampLightFilter(filterPrim)) {
materialBuilder.set("prmanLightfilterShader",
FnKat::StringAttribute("PxrRampLightFilter"));
usdBuilder
.Set("beginDist", f.GetFalloffRampBeginDistanceAttr())
.Set("endDist", f.GetFalloffRampEndDistanceAttr())
.SetSpline("colorRamp", "_Colors", f.GetColorRampAPI())
.SetSpline("ramp", "_Floats", f.GetFalloffRampAPI())
;
// rampMode
{
VtValue val;
UsdAttribute attr = f.GetRampModeAttr();
if (attr.IsValid() && attr.HasAuthoredValueOpinion()
&& attr.Get(&val, currentTime) && val.IsHolding<TfToken>()) {
TfToken t = val.Get<TfToken>();
if (t == UsdRiTokens->distanceToLight) {
filterBuilder.set("rampMode", FnKat::IntAttribute(0));
} else if (t == UsdRiTokens->linear) {
filterBuilder.set("rampMode", FnKat::IntAttribute(1));
} else if (t == UsdRiTokens->spherical) {
filterBuilder.set("rampMode", FnKat::IntAttribute(2));
} else if (t == UsdRiTokens->radial) {
filterBuilder.set("rampMode", FnKat::IntAttribute(3));
}
}
}
}
if (UsdRiPxrRodLightFilter f = UsdRiPxrRodLightFilter(filterPrim)) {
materialBuilder.set("prmanLightfilterShader",
FnKat::StringAttribute("PxrRodLightFilter"));
usdBuilder
.Set("width", f.GetWidthAttr())
.Set("height", f.GetHeightAttr())
.Set("depth", f.GetDepthAttr())
.Set("radius", f.GetRadiusAttr())
.Set("edge", f.GetEdgeThicknessAttr())
.Set("scaleWidth", f.GetScaleWidthAttr())
.Set("scaleHeight", f.GetScaleHeightAttr())
.Set("scaleDepth", f.GetScaleDepthAttr())
.Set("left", f.GetRefineLeftAttr())
.Set("right", f.GetRefineRightAttr())
.Set("top", f.GetRefineTopAttr())
.Set("bottom", f.GetRefineBottomAttr())
.Set("front", f.GetRefineFrontAttr())
.Set("back", f.GetRefineBackAttr())
.Set("leftEdge", f.GetEdgeLeftAttr())
.Set("rightEdge", f.GetEdgeRightAttr())
.Set("topEdge", f.GetEdgeTopAttr())
.Set("bottomEdge", f.GetEdgeBottomAttr())
.Set("frontEdge", f.GetEdgeFrontAttr())
.Set("backEdge", f.GetEdgeBackAttr())
.Set("saturation", f.GetColorSaturationAttr())
.SetSpline("colorRamp", "_Colors", f.GetColorRampAPI())
.SetSpline("falloff", "_Floats", f.GetFalloffRampAPI())
;
}
// Gather prman statements
FnKat::GroupBuilder prmanBuilder;
PxrUsdKatanaReadPrimPrmanStatements(filterPrim, currentTime, prmanBuilder);
attrs.set("prmanStatements", prmanBuilder.build());
materialBuilder.set("prmanLightfilterParams", filterBuilder.build());
attrs.set("material", materialBuilder.build());
PxrUsdKatanaReadXformable(lightFilter, data, attrs);
attrs.set("type", FnKat::StringAttribute("light filter"));
}
static FnKat::Attribute
_GetMaterialAssignAttr(
const UsdPrim& prim,
const PxrUsdKatanaUsdInPrivateData& data)
{
if (not prim or prim.GetPath() == SdfPath::AbsoluteRootPath()) {
// Special-case to pre-empt coding errors.
return FnKat::Attribute();
}
UsdRelationship usdRel = UsdShadeLook::GetBindingRel(prim);
if (usdRel) {
// USD shading binding
SdfPathVector targetPaths;
usdRel.GetForwardedTargets(&targetPaths);
if (targetPaths.size() > 0) {
if (not targetPaths[0].IsPrimPath()) {
FnLogWarn("Target path " << prim.GetPath().GetString() <<
" is not a prim");
return FnKat::Attribute();
}
// This is a copy as it could be modified below.
SdfPath targetPath = targetPaths[0];
UsdPrim targetPrim = data.GetUsdInArgs()->GetStage()->GetPrimAtPath(targetPath);
// If the target is inside a master, then it needs to be re-targeted
// to the instance.
//
// XXX remove this special awareness once GetMasterWithContext is
// is available as the provided prim will automatically
// retarget (or provide enough context to retarget without
// tracking manually).
if (targetPrim and targetPrim.IsInMaster()) {
if (not data.GetInstancePath().IsEmpty() and
not data.GetMasterPath().IsEmpty()) {
// Check if the source and the target of the relationship
// belong to the same master.
// If they do, we have the context necessary to do the
// re-mapping.
if (data.GetMasterPath().GetCommonPrefix(targetPath).
GetPathElementCount() > 0) {
targetPath = data.GetInstancePath().AppendPath(
targetPath.ReplacePrefix(targetPath.GetPrefixes()[0],
SdfPath::ReflexiveRelativePath()));
} else {
// Warn saying the target of relationship isn't within
// the same master as the source.
FnLogWarn("Target path " << prim.GetPath().GetString()
<< " isn't within the master " << data.GetMasterPath());
return FnKat::Attribute();
}
} else {
// XXX
// When loading beneath a master via an isolatePath
// opArg, we can encounter targets which are within masters
// but not within the context of a material.
// While that would be an error according to the below
// warning, it produces the expected results.
// This case can occur when expanding pointinstancers as
// the sources are made via execution of PxrUsdIn again
// at the sub-trees.
// Warn saying target of relationship is in a master,
// but the associated instance path is unknown!
// FnLogWarn("Target path " << prim.GetPath().GetString()
// << " is within a master, but the associated "
// "instancePath is unknown.");
// return FnKat::Attribute();
}
}
// Convert the target path to the equivalent katana location.
// XXX: Looks may have an atypical USD->Katana
// path mapping
std::string location =
PxrUsdKatanaUtils::ConvertUsdLookPathToKatLocation(targetPath, data);
// XXX Looks containing only display terminals are causing issues
// with katana material manipulation workflows.
// For now: exclude any material assign which doesn't include
// /Looks/ in the path
if (location.find(UsdKatanaTokens->katanaLooksScopePathSubstring)
== std::string::npos)
{
return FnKat::Attribute();
}
// location = TfStringReplace(location, "/Looks/", "/Materials/");
// XXX handle multiple assignments
return FnKat::StringAttribute(location);
}
}
return FnKat::Attribute();
}
static void cook(FnKat::GeolibCookInterface &interface)
{
boost::shared_lock<boost::upgrade_mutex>
readerLock(UsdKatanaGetStageLock());
UsdPrim prim;
PxrUsdKatanaUsdInArgsRefPtr usdInArgs;
PxrUsdKatanaUsdInPrivateData* privateData =
static_cast<PxrUsdKatanaUsdInPrivateData*>(interface.getPrivateData());
FnKat::GroupAttribute opArgs = interface.getOpArg();
if (privateData) {
usdInArgs = privateData->GetUsdInArgs();
} else {
FnKat::GroupAttribute additionalOpArgs;
usdInArgs = InitUsdInArgs(interface, additionalOpArgs);
opArgs = FnKat::GroupBuilder()
.update(opArgs)
.deepUpdate(additionalOpArgs)
.build();
}
if (not usdInArgs) {
ERROR("Could not initialize PxrUsdIn usdInArgs.");
return;
}
if (interface.atRoot()) {
interface.stopChildTraversal();
prim = usdInArgs->GetRootPrim();
// XXX This info currently gets used to determine whether
// to correctively rotate cameras. The camera's zUp needs to be
// recorded until we have no more USD z-Up assets and the katana
// assets have no more prerotate camera nodes.
interface.setAttr("info.usd.stageIsZup",
FnKat::IntAttribute(UsdUtilsGetCamerasAreZup(usdInArgs->GetStage())));
// Construct the global camera list at the USD scene root.
//
FnKat::StringBuilder cameraListBuilder;
SdfPathVector cameraPaths = PxrUsdKatanaUtils::FindCameraPaths(prim.GetStage());
TF_FOR_ALL(cameraPathIt, cameraPaths)
{
const std::string path = (*cameraPathIt).GetString();
// only add cameras to the camera list that are beneath the isolate prim path
if (path.find(usdInArgs->GetIsolatePath()) != std::string::npos)
{
cameraListBuilder.push_back(
TfNormPath(usdInArgs->GetRootLocationPath()+"/"+
path.substr(usdInArgs->GetIsolatePath().size())));
}
}
FnKat::StringAttribute cameraListAttr = cameraListBuilder.build();
if (cameraListAttr.getNumberOfValues() > 0)
{
interface.setAttr("cameraList", cameraListAttr);
}
interface.setAttr("info.usdOpArgs", opArgs);
FnKat::GroupAttribute masterMapping =
opArgs.getChildByName("masterMapping");
if (masterMapping.isValid() && masterMapping.getNumberOfChildren())
{
FnGeolibServices::StaticSceneCreateOpArgsBuilder sscb(false);
for (size_t i = 0, e = masterMapping.getNumberOfChildren();
i != e; ++i)
{
std::string masterName = FnKat::DelimiterDecode(
masterMapping.getChildName(i));
std::string katanaPath = FnKat::StringAttribute(
masterMapping.getChildByIndex(i)
).getValue("", false);
if (katanaPath.empty())
{
continue;
}
sscb.createEmptyLocation(katanaPath, "instance source");
sscb.setAttrAtLocation(katanaPath,
"tabs.scenegraph.stopExpand", FnKat::IntAttribute(1));
sscb.setAttrAtLocation(katanaPath, "childPrimPath",
FnKat::StringAttribute(masterName));
}
interface.createChild(
"Masters",
"PxrUsdIn.MasterIntermediate",
FnKat::GroupBuilder()
.update(opArgs)
.set("staticScene", sscb.build())
.build(),
FnKat::GeolibCookInterface::ResetRootFalse,
new PxrUsdKatanaUsdInPrivateData(
usdInArgs->GetRootPrim(), usdInArgs, privateData),
PxrUsdKatanaUsdInPrivateData::Delete);
}
}
