CMakeLists.txt

@@ -931,6 +931,9 @@ set_and_warn_dependency(WITH_IMAGE_OPENEXR WITH_OPENVDB OFF)
 set_and_warn_dependency(WITH_IMAGE_OPENEXR WITH_ALEMBIC OFF)
 set_and_warn_dependency(WITH_IMAGE_OPENEXR WITH_CYCLES_OSL OFF)
 
+# Hydra requires USD.
+set_and_warn_dependency(WITH_USD WITH_HYDRA OFF)
+
 # auto enable openimageio for cycles
 if(WITH_CYCLES)
   # auto enable llvm for cycles_osl

source/blender/render/hydra/CMakeLists.txt

@@ -5,6 +5,18 @@ if(WIN32)
   add_definitions(-DNOMINMAX -DWIN32_LEAN_AND_MEAN -DBOOST_DEBUG_PYTHON)
 endif()
 
+# Precompiled Linux libs are made with GCC, and USD uses some extensions
+# which lead to an incompatible ABI for Clang. Using those extensions with
+# Clang as well works around the issue.
+if(UNIX AND NOT APPLE)
+  if(CMAKE_C_COMPILER_ID MATCHES "Clang")
+    if(EXISTS ${LIBDIR})
+      add_definitions(-DARCH_HAS_GNU_STL_EXTENSIONS)
+      add_cxx_flag("-Wno-deprecated")
+    endif()
+  endif()
+endif()
+
 # USD headers use deprecated TBB headers, silence warning.
 add_definitions(-DTBB_SUPPRESS_DEPRECATED_MESSAGES=1)
 
@@ -44,9 +56,21 @@ set(INC_SYS
   ${BOOST_INCLUDE_DIR}
   ${TBB_INCLUDE_DIR}
   ${GFLAGS_INCLUDE_DIRS}
-  ${LIBDIR}/MaterialX/include
 )
 
+set(LIB
+  ${Epoxy_LIBRARIES}
+  ${PYTHON_LIBRARIES}
+  ${BOOST_LIBRARIES}
+  ${USD_LIBRARIES}
+  ${TBB_LIBRARIES}
+)
+
+if(WITH_MATERIALX)
+  add_definitions(-DWITH_MATERIALX)
+  list(APPEND LIB MaterialXCore)
+endif()
+
 set(SRC
   python.cc
 
@@ -92,12 +116,6 @@ set(SRC
   scene_delegate/volume.cc
 )
 
-set(LIB
-  ${Epoxy_LIBRARIES}
-  ${PYTHON_LIBRARIES}
-  ${BOOST_LIBRARIES}
-)
-
 blender_add_lib(bf_render_hydra "${SRC}" "${INC}" "${INC_SYS}" "${LIB}")
 
 add_dependencies(bf_render_hydra bf_rna)

source/blender/render/hydra/python.cc

@@ -33,7 +33,7 @@ static PyObject *register_plugins_func(PyObject * /*self*/, PyObject *args)
 
   pyiter = PyObject_GetIter(pyplugin_dirs);
   if (pyiter) {
-    while (pyitem = PyIter_Next(pyiter)) {
+    while ((pyitem = PyIter_Next(pyiter))) {
       plugin_dirs.push_back(PyUnicode_AsUTF8(pyitem));
       Py_DECREF(pyitem);
     }
@@ -87,7 +87,7 @@ static PyObject *engine_create_func(PyObject * /*self*/, PyObject *args)
   }
 
   if (engine) {
-    CLOG_INFO(LOG_RENDER_HYDRA, 1, "Engine %016llx %s", engine, engine_type);
+    CLOG_INFO(LOG_RENDER_HYDRA, 1, "Engine %p %s", engine, engine_type);
   }
   return PyLong_FromVoidPtr(engine);
 }
@@ -102,7 +102,7 @@ static PyObject *engine_free_func(PyObject * /*self*/, PyObject *args)
   Engine *engine = (Engine *)PyLong_AsVoidPtr(pyengine);
   delete engine;
 
-  CLOG_INFO(LOG_RENDER_HYDRA, 1, "Engine %016llx", engine);
+  CLOG_INFO(LOG_RENDER_HYDRA, 1, "Engine %p", engine);
   Py_RETURN_NONE;
 }
 
@@ -117,7 +117,7 @@ static PyObject *engine_sync_func(PyObject * /*self*/, PyObject *args)
   Depsgraph *depsgraph = (Depsgraph *)PyLong_AsVoidPtr(pydepsgraph);
   bContext *context = (bContext *)PyLong_AsVoidPtr(pycontext);
 
-  CLOG_INFO(LOG_RENDER_HYDRA, 2, "Engine %016llx", engine);
+  CLOG_INFO(LOG_RENDER_HYDRA, 2, "Engine %p", engine);
   engine->sync(depsgraph, context);
 
   Py_RETURN_NONE;
@@ -135,7 +135,7 @@ static PyObject *engine_sync_usd_func(PyObject * /*self*/, PyObject *args)
   boost::python::extract<pxr::UsdStageRefPtr> extract(pystage);
   pxr::UsdStagePtr stage = extract();
 
-  CLOG_INFO(LOG_RENDER_HYDRA, 2, "Engine %016llx", engine);
+  CLOG_INFO(LOG_RENDER_HYDRA, 2, "Engine %p", engine);
   engine->sync_usd(stage);
 
   Py_RETURN_NONE;
@@ -152,7 +152,7 @@ static PyObject *engine_render_func(PyObject * /*self*/, PyObject *args)
   Engine *engine = (Engine *)PyLong_AsVoidPtr(pyengine);
   Depsgraph *depsgraph = (Depsgraph *)PyLong_AsVoidPtr(pydepsgraph);
 
-  CLOG_INFO(LOG_RENDER_HYDRA, 2, "Engine %016llx", engine);
+  CLOG_INFO(LOG_RENDER_HYDRA, 2, "Engine %p", engine);
 
   /* Allow Blender to execute other Python scripts. */
   Py_BEGIN_ALLOW_THREADS;
@@ -173,7 +173,7 @@ static PyObject *engine_view_draw_func(PyObject * /*self*/, PyObject *args)
   Depsgraph *depsgraph = (Depsgraph *)PyLong_AsVoidPtr(pydepsgraph);
   bContext *context = (bContext *)PyLong_AsVoidPtr(pycontext);
 
-  CLOG_INFO(LOG_RENDER_HYDRA, 3, "Engine %016llx", engine);
+  CLOG_INFO(LOG_RENDER_HYDRA, 3, "Engine %p", engine);
 
   /* Allow Blender to execute other Python scripts. */
   Py_BEGIN_ALLOW_THREADS;
@@ -211,7 +211,7 @@ static PyObject *engine_set_sync_setting_func(PyObject * /*self*/, PyObject *arg
 
   Engine *engine = (Engine *)PyLong_AsVoidPtr(pyengine);
 
-  CLOG_INFO(LOG_RENDER_HYDRA, 3, "Engine %016llx: %s", engine, key);
+  CLOG_INFO(LOG_RENDER_HYDRA, 3, "Engine %p: %s", engine, key);
   engine->set_sync_setting(key, get_setting_val(pyval));
 
   Py_RETURN_NONE;
@@ -227,7 +227,7 @@ static PyObject *engine_set_render_setting_func(PyObject * /*self*/, PyObject *a
 
   Engine *engine = (Engine *)PyLong_AsVoidPtr(pyengine);
 
-  CLOG_INFO(LOG_RENDER_HYDRA, 3, "Engine %016llx: %s", engine, key);
+  CLOG_INFO(LOG_RENDER_HYDRA, 3, "Engine %p: %s", engine, key);
   engine->set_render_setting(key, get_setting_val(pyval));
 
   Py_RETURN_NONE;

source/blender/render/hydra/render_task_delegate.cc

@@ -106,7 +106,7 @@ void RenderTaskDelegate::set_camera_and_viewport(pxr::SdfPath const &camera_id,
   }
 }
 
-pxr::VtValue RenderTaskDelegate::Get(pxr::SdfPath const &id, pxr::TfToken const &key)
+pxr::VtValue RenderTaskDelegate::Get(pxr::SdfPath const & /*id*/, pxr::TfToken const &key)
 {
   if (key == pxr::HdTokens->params) {
     return pxr::VtValue(task_params_);
@@ -127,7 +127,7 @@ pxr::HdRenderBufferDescriptor RenderTaskDelegate::GetRenderBufferDescriptor(pxr:
   return buffer_descriptors_[id];
 }
 
-pxr::TfTokenVector RenderTaskDelegate::GetTaskRenderTags(pxr::SdfPath const &task_id)
+pxr::TfTokenVector RenderTaskDelegate::GetTaskRenderTags(pxr::SdfPath const & /*task_id*/)
 {
   return {pxr::HdRenderTagTokens->geometry};
 }

source/blender/render/hydra/scene_delegate/blender_scene_delegate.cc

@@ -273,7 +273,7 @@ pxr::SdfPath BlenderSceneDelegate::prim_id(ID *id, const char *prefix) const
 {
   /* Making id of object in form like <prefix>_<pointer in 16 hex digits format> */
   char name[32];
-  snprintf(name, sizeof(name), "%s_%016llx", prefix, (uintptr_t)id);
+  snprintf(name, sizeof(name), "%s_%p", prefix, id);
   return GetDelegateID().AppendElementString(name);
 }
 

source/blender/render/hydra/scene_delegate/curves.cc

@@ -66,7 +66,7 @@ void CurvesData::update()
   ID_LOG(1, "");
 }
 
-pxr::VtValue CurvesData::get_data(pxr::SdfPath const &id, pxr::TfToken const &key) const
+pxr::VtValue CurvesData::get_data(pxr::SdfPath const & /* id */, pxr::TfToken const &key) const
 {
   if (key == pxr::HdTokens->points) {
     return pxr::VtValue(vertices_);
@@ -91,7 +91,7 @@ bool CurvesData::update_visibility()
   return ret;
 }
 
-pxr::HdBasisCurvesTopology CurvesData::curves_topology(pxr::SdfPath const &id) const
+pxr::HdBasisCurvesTopology CurvesData::curves_topology(pxr::SdfPath const & /* id */) const
 {
   return pxr::HdBasisCurvesTopology(pxr::HdTokens->linear,
                                     pxr::TfToken(),

source/blender/render/hydra/scene_delegate/id.cc

@@ -12,7 +12,7 @@ IdData::IdData(BlenderSceneDelegate *scene_delegate, ID *id, pxr::SdfPath const
 {
 }
 
-pxr::VtValue IdData::get_data(pxr::TfToken const &key) const
+pxr::VtValue IdData::get_data(pxr::TfToken const & /*key*/) const
 {
   return pxr::VtValue();
 }

source/blender/render/hydra/scene_delegate/image.cc

@@ -46,7 +46,7 @@ static std::string cache_image_file(Image *image,
       opts.im_format = scene->r.im_format;
     }
 
-    snprintf(file_name, sizeof(file_name), "img_%016llx%s", (uintptr_t)image, r_ext);
+    snprintf(file_name, sizeof(file_name), "img_%p%s", image, r_ext);
 
     file_path = get_cache_file(file_name);
     if (check_exist && BLI_exists(file_path.c_str())) {

source/blender/render/hydra/scene_delegate/instancer.cc

@@ -163,7 +163,7 @@ void InstancerData::update_instance(Object *parent_ob, DupliObject *dupli)
       inst->data = std::make_unique<LightData>(scene_delegate_, ob, p_id);
       inst->data->init();
     }
-    ID_LOG(2, "Light %s %d", inst->data->id->name, inst->transforms.size());
+    ID_LOG(2, "Light %s %d", inst->data->id->name, (int)inst->transforms.size());
     inst->transforms.push_back(gf_matrix_from_transform(dupli->mat));
   }
   else {
@@ -177,7 +177,7 @@ void InstancerData::update_instance(Object *parent_ob, DupliObject *dupli)
     else {
       inst->data->update();
     }
-    ID_LOG(2, "Mesh %s %d", inst->data->id->name, mesh_transforms_.size());
+    ID_LOG(2, "Mesh %s %d", inst->data->id->name, (int)mesh_transforms_.size());
     inst->indices.push_back(mesh_transforms_.size());
     mesh_transforms_.push_back(gf_matrix_from_transform(dupli->mat));
   }
@@ -225,7 +225,7 @@ pxr::SdfPath InstancerData::object_prim_id(Object *object) const
 {
   /* Making id of object in form like <prefix>_<pointer in 16 hex digits format> */
   char name[32];
-  snprintf(name, sizeof(name), "O_%016llx", (uint64_t)object);
+  snprintf(name, sizeof(name), "O_%p", object);
   return prim_id.AppendElementString(name);
 }
 

source/blender/render/hydra/scene_delegate/mtlx_hydra_adapter.cc

@@ -1,14 +1,18 @@
 /* SPDX-License-Identifier: Apache-2.0
  * Copyright 2011-2022 Blender Foundation */
 
+#include "BLI_utildefines.h"
+
 #include <pxr/base/arch/fileSystem.h>
 
 #include <pxr/usd/ar/resolver.h>
 #include <pxr/usd/ar/resolverContextBinder.h>
 #include <pxr/usd/ar/resolverScopedCache.h>
 
-#include <pxr/usd/usdMtlx/reader.h>
+#ifdef WITH_MATERIALX
-#include <pxr/usd/usdMtlx/utils.h>
+#  include <pxr/usd/usdMtlx/reader.h>
+#  include <pxr/usd/usdMtlx/utils.h>
+#endif
 
 #include <pxr/usd/usdShade/material.h>
 #include <pxr/usd/usdShade/shader.h>
@@ -20,8 +24,6 @@
 
 #include "mtlx_hydra_adapter.h"
 
-namespace mx = MaterialX;
-
 namespace blender::render::hydra {
 
 void hdmtlx_convert_to_materialnetworkmap(std::string const &mtlx_path,
@@ -29,6 +31,7 @@ void hdmtlx_convert_to_materialnetworkmap(std::string const &mtlx_path,
                                           pxr::TfTokenVector const &render_contexts,
                                           pxr::HdMaterialNetworkMap *out)
 {
+#ifdef WITH_MATERIALX
   if (mtlx_path.empty()) {
     return;
   }
@@ -46,17 +49,17 @@ void hdmtlx_convert_to_materialnetworkmap(std::string const &mtlx_path,
   pxr::UsdStageRefPtr stage = pxr::UsdStage::CreateInMemory(stage_id, context);
 
   try {
-    mx::DocumentPtr doc = pxr::UsdMtlxReadDocument(mtlx_path);
+    MaterialX::DocumentPtr doc = pxr::UsdMtlxReadDocument(mtlx_path);
     pxr::UsdMtlxRead(doc, stage);
   }
-  catch (mx::ExceptionFoundCycle &x) {
+  catch (MaterialX::ExceptionFoundCycle &x) {
     Tf_PostErrorHelper(pxr::TF_CALL_CONTEXT,
                        pxr::TF_DIAGNOSTIC_RUNTIME_ERROR_TYPE,
                        "MaterialX cycle found: %s\n",
                        x.what());
     return;
   }
-  catch (mx::Exception &x) {
+  catch (MaterialX::Exception &x) {
     Tf_PostErrorHelper(pxr::TF_CALL_CONTEXT,
                        pxr::TF_DIAGNOSTIC_RUNTIME_ERROR_TYPE,
                        "MaterialX error: %s\n",
@@ -78,6 +81,9 @@ void hdmtlx_convert_to_materialnetworkmap(std::string const &mtlx_path,
       }
     }
   }
+#else
+  UNUSED_VARS(mtlx_path, shader_source_types, render_contexts, out);
+#endif
 }
 
 }  // namespace blender::render::hydra

source/blender/render/hydra/simple_light_task_delegate.cc

@@ -30,7 +30,7 @@ void SimpleLightTaskDelegate::set_camera_path(pxr::SdfPath const &camera_path)
   task_params_.cameraPath = camera_path;
 }
 
-pxr::VtValue SimpleLightTaskDelegate::Get(pxr::SdfPath const &id, pxr::TfToken const &key)
+pxr::VtValue SimpleLightTaskDelegate::Get(pxr::SdfPath const & /*id*/, pxr::TfToken const &key)
 {
   if (key == pxr::HdTokens->params) {
     return pxr::VtValue(task_params_);

source/blender/render/hydra/viewport_engine.cc

@@ -217,12 +217,12 @@ void DrawTexture::free()
   texture_ = nullptr;
 }
 
-void ViewportEngine::render(Depsgraph *depsgraph)
+void ViewportEngine::render(Depsgraph * /* depsgraph */)
 {
   /* Empty function */
 }
 
-void ViewportEngine::render(Depsgraph *depsgraph, bContext *context)
+void ViewportEngine::render(Depsgraph * /* depsgraph */, bContext *context)
 {
   ViewSettings view_settings(context);
   if (view_settings.width() * view_settings.height() == 0) {