static UsdPrim
_GetMaterialParent(const UsdStageRefPtr& stage,
const PxrUsdMayaShadingModeExportContext::AssignmentVector& assignments)
{
SdfPath commonAncestor;
TF_FOR_ALL(iter, assignments) {
const SdfPath& assn = iter->first;
if (stage->GetPrimAtPath(assn)) {
if (commonAncestor.IsEmpty()) {
commonAncestor = assn;
}
else {
commonAncestor = commonAncestor.GetCommonPrefix(assn);
}
}
}
if (commonAncestor.IsEmpty()) {
return UsdPrim();
}
if (commonAncestor == SdfPath::AbsoluteRootPath()) {
return stage->GetPseudoRoot();
}
SdfPath shaderExportLocation = commonAncestor;
while (!shaderExportLocation.IsRootPrimPath()) {
shaderExportLocation = shaderExportLocation.GetParentPath();
}
shaderExportLocation = shaderExportLocation.AppendChild(TfToken("Looks"));
return UsdGeomScope::Define(stage, shaderExportLocation).GetPrim();
}
static SdfPath
_AppendNode(const SdfPath &path, const Sdf_PathNodeConstRefPtr &node) {
switch (node->GetNodeType()) {
case Sdf_PathNode::PrimNode:
return path.AppendChild(node->GetName());
case Sdf_PathNode::PrimPropertyNode:
return path.AppendProperty(node->GetName());
case Sdf_PathNode::PrimVariantSelectionNode:
{
const Sdf_PathNode::VariantSelectionType& selection =
node->GetVariantSelection();
return path.AppendVariantSelection(selection.first.GetString(),
selection.second.GetString());
}
case Sdf_PathNode::TargetNode:
return path.AppendTarget( node->GetTargetPath());
case Sdf_PathNode::RelationalAttributeNode:
return path.AppendRelationalAttribute(node->GetName());
case Sdf_PathNode::MapperNode:
return path.AppendMapper(node->GetTargetPath());
case Sdf_PathNode::MapperArgNode:
return path.AppendMapperArg(node->GetName());
case Sdf_PathNode::ExpressionNode:
return path.AppendExpression();
default:
// CODE_COVERAGE_OFF
// Should never get here. All reasonable cases are
// handled above.
TF_CODING_ERROR("Unexpected node type %i", node->GetNodeType());
return SdfPath::EmptyPath();
// CODE_COVERAGE_ON
}
}
/* static */
bool
UsdMayaTranslatorCamera::Read(
const UsdGeomCamera& usdCamera,
MObject parentNode,
const UsdMayaPrimReaderArgs& args,
UsdMayaPrimReaderContext* context)
{
if (!usdCamera) {
return false;
}
const UsdPrim& prim = usdCamera.GetPrim();
const SdfPath primPath = prim.GetPath();
MStatus status;
// Create the transform node for the camera.
MObject transformObj;
if (!UsdMayaTranslatorUtil::CreateTransformNode(prim,
parentNode,
args,
context,
&status,
&transformObj)) {
return false;
}
// Create the camera shape node.
MDagModifier dagMod;
MObject cameraObj = dagMod.createNode(_tokens->MayaCameraTypeName.GetText(),
transformObj,
&status);
CHECK_MSTATUS_AND_RETURN(status, false);
status = dagMod.doIt();
CHECK_MSTATUS_AND_RETURN(status, false);
TF_VERIFY(!cameraObj.isNull());
MFnCamera cameraFn(cameraObj, &status);
CHECK_MSTATUS_AND_RETURN(status, false);
const std::string cameraShapeName = prim.GetName().GetString() +
_tokens->MayaCameraShapeNameSuffix.GetString();
cameraFn.setName(cameraShapeName.c_str(), &status);
CHECK_MSTATUS_AND_RETURN(status, false);
if (context) {
const SdfPath shapePrimPath = primPath.AppendChild(TfToken(cameraShapeName));
context->RegisterNewMayaNode(shapePrimPath.GetString(), cameraObj);
}
return _ReadToCamera(usdCamera, cameraFn, args, context);
}
UsdMayaGLBatchRenderer::TaskDelegate::TaskDelegate(
HdRenderIndex *renderIndex, SdfPath const& delegateID)
: HdSceneDelegate(renderIndex, delegateID)
{
_lightingContext = GlfSimpleLightingContext::New();
// populate tasks in renderindex
// create an unique namespace
_rootId = delegateID.AppendChild(
TfToken(TfStringPrintf("_UsdImaging_%p", this)));
_simpleLightTaskId = _rootId.AppendChild(_tokens->simpleLightTask);
_cameraId = _rootId.AppendChild(_tokens->camera);
// camera
{
// Since we're hardcoded to use HdStRenderDelegate, we expect to
// have camera Sprims.
TF_VERIFY(renderIndex->IsSprimTypeSupported(HdPrimTypeTokens->camera));
renderIndex->InsertSprim(HdPrimTypeTokens->camera, this, _cameraId);
_ValueCache &cache = _valueCacheMap[_cameraId];
cache[HdStCameraTokens->worldToViewMatrix] = VtValue(GfMatrix4d(1.0));
cache[HdStCameraTokens->projectionMatrix] = VtValue(GfMatrix4d(1.0));
cache[HdStCameraTokens->windowPolicy] = VtValue(); // no window policy.
}
// simple lighting task (for Hydra native)
{
renderIndex->InsertTask<HdxSimpleLightTask>(this, _simpleLightTaskId);
_ValueCache &cache = _valueCacheMap[_simpleLightTaskId];
HdxSimpleLightTaskParams taskParams;
taskParams.cameraPath = _cameraId;
cache[HdTokens->params] = VtValue(taskParams);
cache[HdTokens->children] = VtValue(SdfPathVector());
}
}
UsdImaging_DefaultTaskDelegate::UsdImaging_DefaultTaskDelegate(
HdRenderIndexSharedPtr const& parentIndex,
SdfPath const& delegateID)
: UsdImagingTaskDelegate(parentIndex, delegateID)
, _viewport(0,0,1,1)
, _selectionColor(1,1,0,1)
{
// create an unique namespace
_rootId = delegateID.AppendChild(
TfToken(TfStringPrintf("_UsdImaging_%p", this)));
_renderTaskId = _rootId.AppendChild(_tokens->renderTask);
_idRenderTaskId = _rootId.AppendChild(_tokens->idRenderTask);
_selectionTaskId = _rootId.AppendChild(_tokens->selectionTask);
_simpleLightTaskId = _rootId.AppendChild(_tokens->simpleLightTask);
_simpleLightBypassTaskId = _rootId.AppendChild(_tokens->simpleLightBypassTask);
_cameraId = _rootId.AppendChild(_tokens->camera);
_activeSimpleLightTaskId = SdfPath();
// TODO: tasks of shadow map generation, accumulation etc will be
// prepared here.
HdRenderIndex &renderIndex = GetRenderIndex();
// camera
{
renderIndex.InsertCamera<HdCamera>(this, _cameraId);
_ValueCache &cache = _valueCacheMap[_cameraId];
cache[HdShaderTokens->worldToViewMatrix] = VtValue(GfMatrix4d(1));
cache[HdShaderTokens->projectionMatrix] = VtValue(GfMatrix4d(1));
cache[HdTokens->cameraFrustum] = VtValue(); // we don't use GfFrustum.
cache[HdTokens->windowPolicy] = VtValue(); // we don't use window policy.
}
// selection task
{
renderIndex.InsertTask<HdxSelectionTask>(this, _selectionTaskId);
_ValueCache &cache = _valueCacheMap[_selectionTaskId];
HdxSelectionTaskParams params;
params.enableSelection = true;
params.selectionColor = _selectionColor;
params.locateColor = GfVec4f(0,0,1,1);
cache[HdTokens->params] = VtValue(params);
cache[HdTokens->children] = VtValue(SdfPathVector());
}
// simple lighting task (for Hydra native)
{
renderIndex.InsertTask<HdxSimpleLightTask>(this, _simpleLightTaskId);
_ValueCache &cache = _valueCacheMap[_simpleLightTaskId];
HdxSimpleLightTaskParams params;
params.cameraPath = _cameraId;
cache[HdTokens->params] = VtValue(params);
cache[HdTokens->children] = VtValue(SdfPathVector());
}
// simple lighting task (for Presto UsdBaseIc compatible)
{
renderIndex.InsertTask<HdxSimpleLightBypassTask>(this,
_simpleLightBypassTaskId);
_ValueCache &cache = _valueCacheMap[_simpleLightBypassTaskId];
HdxSimpleLightBypassTaskParams params;
params.cameraPath = _cameraId;
cache[HdTokens->params] = VtValue(params);
cache[HdTokens->children] = VtValue(SdfPathVector());
}
// render task
_InsertRenderTask(_renderTaskId);
_InsertRenderTask(_idRenderTaskId);
// initialize HdxRenderTaskParams for render tasks
_UpdateCollection(&_rprims, HdTokens->geometry, HdTokens->smoothHull,
SdfPathVector(1, SdfPath::AbsoluteRootPath()),
_renderTaskId,
_idRenderTaskId);
_UpdateRenderParams(_renderParams,
_renderParams,
_renderTaskId);
_UpdateRenderParams(_idRenderParams,
_idRenderParams,
_idRenderTaskId);
}
