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Kalina

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About Kalina

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  • Name Kalina

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  1. Updating from Houdini 16.0.504.20 to 16.0.577 fixed the issue.
  2. OK, I'll try downgrading from 4.9.3
  3. Thanks, but that didn't help. The issue is still the same. A bit more info that may be relevant, though: I am on CentOS 6, which comes pre-packaged with gcc4.4. You may notice that my Makefile points to CXX=/share/apps/bin/gcc ...where I have gcc4.9.3, which I'm trying to use instead. Am I using the wrong gcc version, or pointing to it incorrectly?
  4. I'm using whatever came with Houdini16. Should I be using a different one?
  5. Here is the full problematic code: SOP_Testing.C: #include "SOP_Testing.h" #include <UT/UT_DSOVersion.h> #include <OP/OP_OperatorTable.h> #include <OP/OP_AutoLockInputs.h> using namespace AVL_Testing; PRM_Template SOP_Testing::myTemplateList[] = { PRM_Template() }; void newSopOperator(OP_OperatorTable *table) { OP_Operator *op; op = new OP_Operator("avl_testing", "Testing", SOP_Testing::myConstructor, SOP_Testing::myTemplateList, 0, 0, NULL, OP_FLAG_GENERATOR ); table->addOperator(op); } OP_Node* SOP_Testing::myConstructor(OP_Network *net, const char *name, OP_Operator *op) { return new SOP_Testing(net, name, op); } SOP_Testing::SOP_Testing(OP_Network *net, const char *name, OP_Operator *op): SOP_Node(net, name, op){} SOP_Testing::~SOP_Testing() {} OP_ERROR SOP_Testing::cookMySop(OP_Context &context) { openvdb::FloatGrid::Ptr grid = openvdb::FloatGrid::create(); openvdb::FloatGrid::Accessor accessor = grid->getAccessor(); openvdb::Coord xyz(5,5,5); accessor.setValue(xyz, 1.0); xyz.reset(0,0,0); accessor.setValue(xyz, 1.0); GU_PrimVDB::buildFromGrid((GU_Detail&)*gdp, grid, NULL, "gridName"); // Crashes on this line! // Complains about openvdb::v3_3_0_sesi::math::Transform::Transform(std::shared_ptr<openvdb::v3_3_0_sesi::math::MapBase> const&) return error(); } SOP_Testing.h: #ifndef __SOP_Testing_h__ #define __SOP_Testing_h__ #include <GU/GU_PrimVDB.h> #include <SOP/SOP_Node.h> namespace AVL_Testing { class SOP_Testing : public SOP_Node { public: static OP_Node *myConstructor(OP_Network*, const char *, OP_Operator *); static PRM_Template myTemplateList[]; protected: SOP_Testing(OP_Network *net, const char *name, OP_Operator *op); virtual ~SOP_Testing(); virtual OP_ERROR cookMySop(OP_Context &context); }; } #endif Makefile: CXX=/share/apps/bin/gcc HOU_VERSION = 16.0 DSONAME = SOP_Testing.so LOCATION = ~/houdini${HOU_VERSION}/dso/ SOURCES = SOP_Testing.C include $(HFS)/toolkit/makefiles/Makefile.gnu OPTIMIZER = -g HOUDINI_DSO_ERROR = 2 CPPFLAGS += -fPIC install: mkdir -p ${LOCATION} cp ${DSONAME} ${LOCATION}
  6. I just updated to Houdini16, and all of a sudden this same little code snippet doesn't work anymore. Houdini crashes on the line: GU_PrimVDB* vdb = GU_PrimVDB::buildFromGrid((GU_Detail&)*gdp, grid, NULL, "gridName"); ...with no log or helpful error message, just: undefined symbol: _ZN7openvdb11v3_3_0_sesi4math9TransformC1ERKSt10shared_ptrINS1_7MapBaseEE Deciphering that with c++filt shows that it's complaining about: openvdb::v3_3_0_sesi::math::Transform::Transform(std::shared_ptr<openvdb::v3_3_0_sesi::math::MapBase> const&) ...even though I'm not even using a transform. Any thoughts?
  7. Here is a simplification of my problem: I have two side-by-side volumes, and one of them has voxels that are twice the size of the other's. Or, another way of wording it – I have two volumes that are the same size, with resolutions e.g. 10x10x10 and 20x20x20. When I render the image, there is a seam between the two volumes. This seam is not there if the two volumes were have the same voxel size. How do I remove this seam? Is there something I can do in the shader? seam.hipnc
  8. Some more advanced questions that I have, if you're feeling especially helpful: * How do I render a VDB? * What is the difference between the "RenderMan (rib)" and "RenderMan RIS (ris)" out nodes?
  9. I would really appreciate help with doing the simplest possible volume render using RenderMan in Houdini. I always just get a black image. I think my issue is that I don't know how to set up a volume shader... A sample .hip file, or just telling me which nodes to use, would be very appreciated.
  10. Scripting in python, I can programmatically create a volume sop and then use setVoxel() or setAllVoxels() to fill in the voxels with data. ( http://archive.sidefx.com/docs/houdini15.0/hom/hou/Volume ) How can I do this with a VDB? I thought it should be somewhat similar, but there are no "set" functions I can call. ( http://archive.sidefx.com/docs/houdini15.0/hom/hou/VDB )
  11. Thank you, I got it working! openvdb::FloatGrid::Ptr grid = openvdb::FloatGrid::create(); openvdb::FloatGrid::Accessor accessor = grid->getAccessor(); openvdb::Coord xyz(5,5,5); accessor.setValue(xyz, 1.0); xyz.reset(0,0,0); accessor.setValue(xyz, 1.0); GU_PrimVDB* vdb = GU_PrimVDB::buildFromGrid((GU_Detail&)*gdp, grid, NULL, "gridName");
  12. Thanks, but that didn't get me very far. I now have: openvdb::GridBase::Ptr grid = openvdb::FloatGrid::create(); GEO_PrimVDB* vdb = GU_PrimVDB::buildFromGrid((GU_Detail&)gdp, grid, NULL, "gridName"); which segfaults and crashes: AP_Interface::coreDumpChaser(UTsignalHandlerArg) <libHoudiniUI.so> AP_Interface::si_CrashHandler::chaser(UTsignalHandlerArg) <libHoudiniUI.so> signalCallback(UTsignalHandlerArg) <libHoudiniUT.so> UT_Signal::UT_ComboSignalHandler::operator()(int, siginfo*, void*) const <libHoudiniUT.so> UT_Signal::processSignal(int, siginfo*, void*) <libHoudiniUT.so> [0xf70e] <libpthread.so.0> GA_PrimitiveFactory::lookupDefinition(GA_PrimitiveTypeId const&) const <libHoudiniGEO.so> GA_PrimitiveFactory::create(GA_PrimitiveTypeId const&, GA_Detail&, long) const <libHoudiniGEO.so> GEO_Detail::insertPrimitive(GA_PrimitiveTypeId const&, GEO_Primitive const*) <libHoudiniGEO.so> GU_PrimVDB::build(GU_Detail*, bool) <libHoudiniGEO.so> GU_PrimVDB::buildFromGridAdapter(GU_Detail&, void*, GEO_PrimVDB const*, char const*) <libHoudiniGEO.so>
  13. I'm trying to figure out how to create an OpenVDB volume by writing out the voxels, to make a custom SOP. The OpenVDB Hello World example goes something like this: // Initialize the OpenVDB library. This must be called at least // once per program and may safely be called multiple times. openvdb::initialize(); // Create an empty floating-point grid with background value 0. openvdb::FloatGrid::Ptr grid = openvdb::FloatGrid::create(); // Get an accessor for coordinate-based access to voxels. openvdb::FloatGrid::Accessor accessor = grid->getAccessor(); // Define a coordinate with signed indices. openvdb::Coord xyz(5, 5, 5); // Set the voxel value at (5, 5, 5) to 1. accessor.setValue(xyz, 1.0); But now how would I get this to work in Houdini in my "cookMySop()" function? How do I attach this grid to a GU_PrimVDB (or something) to actually create the OpenVDB primitive in Houdini? Could I get a Houdini-specific "Hello World" example?
  14. edward, thanks for the suggestion. I couldn't get valgrind working at first, but I just figured it out. I'll report back if I have more questions or relevant findings.
  15. Thanks, will do.