source/blender/nodes/shader/materialx/group_nodes.cc

@@ -3,13 +3,27 @@
  * SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "group_nodes.h"
-#include "node_item.h"
 #include "node_parser.h"
 
 #include "BLI_vector.hh"
 
 namespace blender::nodes::materialx {
 
+GroupNodeParser::GroupNodeParser(MaterialX::GraphElement *graph,
+                                 const Depsgraph *depsgraph,
+                                 const Material *material,
+                                 const bNode *node,
+                                 const bNodeSocket *socket_out,
+                                 NodeItem::Type to_type,
+                                 GroupNodeParser *group_parser,
+                                 ExportImageFunction export_image_fn,
+                                 bool use_group_default)
+    : NodeParser(
+          graph, depsgraph, material, node, socket_out, to_type, group_parser, export_image_fn),
+      use_group_default_(use_group_default)
+{
+}
+
 NodeItem GroupNodeParser::compute()
 {
   NodeItem res = empty();
@@ -32,15 +46,15 @@ NodeItem GroupNodeParser::compute()
   graph = group_graph.get();
 #endif
 
-  NodeItem out =
+  NodeItem out = GroupOutputNodeParser(graph,
-      GroupOutputNodeParser(graph,
                                        depsgraph_,
                                        material_,
                                        node_out,
                                        socket_out_,
                                        to_type_,
                                        this,
-                                       export_image_fn_)
+                                       export_image_fn_,
+                                       use_group_default_)
                      .compute_full();
 
 #ifdef USE_MATERIALX_NODEGRAPH
@@ -66,7 +80,8 @@ NodeItem GroupOutputNodeParser::compute()
 #ifdef USE_MATERIALX_NODEGRAPH
   Vector<NodeItem> values;
   for (auto socket_in : node_->input_sockets()) {
-    NodeItem value = get_input_value(socket_in->index(), NodeItem::Type::Any);
+    NodeItem value = get_input_value(
+        socket_in->index(), NodeItem::is_arithmetic(to_type_) ? NodeItem::Type::Any : to_type_);
     if (value.value) {
       value = create_node("constant", value.type(), {{"value", value}});
     }
@@ -75,12 +90,12 @@ NodeItem GroupOutputNodeParser::compute()
   Vector<NodeItem> outputs;
   for (int i = 0; i < values.size(); ++i) {
     if (values[i]) {
-      outputs.append(create_output("output" + std::to_string(i + 1), values[i]));
+      outputs.append(create_output(out_name(node_->input_sockets()[i]), values[i]));
     }
   }
   return outputs[socket_out_->index()];
 #else
-  if (NodeItem::is_arithmetic(to_type_)) {
+  if (use_group_default_) {
     return get_input_value(socket_out_->index(), to_type_);
   }
   return get_input_link(socket_out_->index(), to_type_);
@@ -89,15 +104,6 @@ NodeItem GroupOutputNodeParser::compute()
 
 NodeItem GroupOutputNodeParser::compute_full()
 {
-#ifdef USE_MATERIALX_NODEGRAPH
-  NodeItem res = empty();
-
-  /* Checking if output was already computed */
-  res.output = graph_->getOutput("output" + std::to_string(socket_out_->index() + 1));
-  if (res.output) {
-    return res;
-  }
-
   CLOG_INFO(LOG_MATERIALX_SHADER,
             1,
             "%s [%d] => %s",
@@ -105,6 +111,15 @@ NodeItem GroupOutputNodeParser::compute_full()
             node_->typeinfo->type,
             NodeItem::type(to_type_).c_str());
 
+#ifdef USE_MATERIALX_NODEGRAPH
+  NodeItem res = empty();
+
+  /* Checking if output was already computed */
+  res.output = graph_->getOutput(out_name(socket_out_));
+  if (res.output) {
+    return res;
+  }
+
   res = compute();
   return res;
 #else
@@ -112,6 +127,11 @@ NodeItem GroupOutputNodeParser::compute_full()
 #endif
 }
 
+std::string GroupOutputNodeParser::out_name(const bNodeSocket *out_socket)
+{
+  return MaterialX::createValidName(std::string("out_") + out_socket->name);
+}
+
 NodeItem GroupInputNodeParser::compute()
 {
 #ifdef USE_MATERIALX_NODEGRAPH
@@ -121,11 +141,11 @@ NodeItem GroupInputNodeParser::compute()
   }
 
   if (value.value) {
-    value = create_node("constant", value.type(), {{"value", value}});
+    value = group_parser_->create_node("constant", value.type(), {{"value", value}});
   }
-  return create_input("input" + std::to_string(socket_out_->index() + 1), value);
+  return create_input(in_name(), value);
 #else
-  if (NodeItem::is_arithmetic(to_type_)) {
+  if (use_group_default_) {
     return group_parser_->get_input_value(socket_out_->index(), to_type_);
   }
   return group_parser_->get_input_link(socket_out_->index(), to_type_);
@@ -134,15 +154,6 @@ NodeItem GroupInputNodeParser::compute()
 
 NodeItem GroupInputNodeParser::compute_full()
 {
-#ifdef USE_MATERIALX_NODEGRAPH
-  NodeItem res = empty();
-
-  /* Checking if output was already computed */
-  res.input = graph_->getInput("input" + std::to_string(socket_out_->index() + 1));
-  if (res.input) {
-    return res;
-  }
-
   CLOG_INFO(LOG_MATERIALX_SHADER,
             1,
             "%s [%d] => %s",
@@ -150,6 +161,15 @@ NodeItem GroupInputNodeParser::compute_full()
             node_->typeinfo->type,
             NodeItem::type(to_type_).c_str());
 
+#ifdef USE_MATERIALX_NODEGRAPH
+  NodeItem res = empty();
+
+  /* Checking if input was already computed */
+  res.input = graph_->getInput(in_name());
+  if (res.input) {
+    return res;
+  }
+
   res = compute();
   return res;
 #else
@@ -157,4 +177,9 @@ NodeItem GroupInputNodeParser::compute_full()
 #endif
 }
 
+std::string GroupInputNodeParser::in_name() const
+{
+  return MaterialX::createValidName(std::string("in_") + socket_out_->name);
+}
+
 }  // namespace blender::nodes::materialx

source/blender/nodes/shader/materialx/group_nodes.h

@@ -15,27 +15,43 @@ namespace blender::nodes::materialx {
 class GroupInputNodeParser;
 
 class GroupNodeParser : public NodeParser {
-  friend NodeParser;
   friend GroupInputNodeParser;
 
+ protected:
+  bool use_group_default_;
+
  public:
-  using NodeParser::NodeParser;
+  GroupNodeParser(MaterialX::GraphElement *graph,
+                  const Depsgraph *depsgraph,
+                  const Material *material,
+                  const bNode *node,
+                  const bNodeSocket *socket_out,
+                  NodeItem::Type to_type,
+                  GroupNodeParser *group_parser,
+                  ExportImageFunction export_image_fn,
+                  bool use_group_default);
   NodeItem compute() override;
   NodeItem compute_full() override;
 };
 
-class GroupOutputNodeParser : public NodeParser {
+class GroupOutputNodeParser : public GroupNodeParser {
  public:
-  using NodeParser::NodeParser;
+  using GroupNodeParser::GroupNodeParser;
   NodeItem compute() override;
   NodeItem compute_full() override;
+
+ private:
+  static std::string out_name(const bNodeSocket *out_socket);
 };
 
-class GroupInputNodeParser : public NodeParser {
+class GroupInputNodeParser : public GroupNodeParser {
  public:
-  using NodeParser::NodeParser;
+  using GroupNodeParser::GroupNodeParser;
   NodeItem compute() override;
   NodeItem compute_full() override;
+
+ private:
+  std::string in_name() const;
 };
 
 }  // namespace blender::nodes::materialx

source/blender/nodes/shader/materialx/node_item.cc

@@ -174,12 +174,12 @@ NodeItem NodeItem::operator/(const NodeItem &other) const
 NodeItem NodeItem::operator%(const NodeItem &other) const
 {
   return arithmetic(
-      other, "modulo", [](float a, float b) { return b == 0.0f ? 0.0f : std::fmodf(a, b); });
+      other, "modulo", [](float a, float b) { return b == 0.0f ? 0.0f : std::fmod(a, b); });
 }
 
 NodeItem NodeItem::operator^(const NodeItem &other) const
 {
-  return arithmetic(other, "power", [](float a, float b) { return std::powf(a, b); });
+  return arithmetic(other, "power", [](float a, float b) { return std::pow(a, b); });
 }
 
 NodeItem NodeItem::operator[](int index) const
@@ -245,17 +245,17 @@ bool NodeItem::operator!=(const NodeItem &other) const
 
 NodeItem NodeItem::abs() const
 {
-  return arithmetic("absval", [](float a) { return std::fabsf(a); });
+  return arithmetic("absval", [](float a) { return std::abs(a); });
 }
 
 NodeItem NodeItem::floor() const
 {
-  return arithmetic("floor", [](float a) { return std::floorf(a); });
+  return arithmetic("floor", [](float a) { return std::floor(a); });
 }
 
 NodeItem NodeItem::ceil() const
 {
-  return arithmetic("ceil", [](float a) { return std::ceilf(a); });
+  return arithmetic("ceil", [](float a) { return std::ceil(a); });
 }
 
 NodeItem NodeItem::length() const
@@ -400,38 +400,37 @@ NodeItem NodeItem::rotate(const NodeItem &angle_xyz, bool invert)
 
 NodeItem NodeItem::sin() const
 {
-  return to_vector().arithmetic("sin", [](float a) { return std::sinf(a); });
+  return to_vector().arithmetic("sin", [](float a) { return std::sin(a); });
 }
 
 NodeItem NodeItem::cos() const
 {
-  return to_vector().arithmetic("cos", [](float a) { return std::cosf(a); });
+  return to_vector().arithmetic("cos", [](float a) { return std::cos(a); });
 }
 
 NodeItem NodeItem::tan() const
 {
-  return to_vector().arithmetic("tan", [](float a) { return std::tanf(a); });
+  return to_vector().arithmetic("tan", [](float a) { return std::tan(a); });
 }
 
 NodeItem NodeItem::asin() const
 {
-  return to_vector().arithmetic("asin", [](float a) { return std::asinf(a); });
+  return to_vector().arithmetic("asin", [](float a) { return std::asin(a); });
 }
 
 NodeItem NodeItem::acos() const
 {
-  return to_vector().arithmetic("acos", [](float a) { return std::acosf(a); });
+  return to_vector().arithmetic("acos", [](float a) { return std::acos(a); });
 }
 
 NodeItem NodeItem::atan() const
 {
-  return to_vector().arithmetic("atan", [](float a) { return std::atanf(a); });
+  return to_vector().arithmetic("atan", [](float a) { return std::atan(a); });
 }
 
 NodeItem NodeItem::atan2(const NodeItem &other) const
 {
-  return to_vector().arithmetic(
+  return to_vector().arithmetic(other, "atan2", [](float a, float b) { return std::atan2(a, b); });
-      other, "atan2", [](float a, float b) { return std::atan2f(a, b); });
 }
 
 NodeItem NodeItem::sinh() const
@@ -456,12 +455,12 @@ NodeItem NodeItem::tanh() const
 
 NodeItem NodeItem::ln() const
 {
-  return to_vector().arithmetic("ln", [](float a) { return std::logf(a); });
+  return to_vector().arithmetic("ln", [](float a) { return std::log(a); });
 }
 
 NodeItem NodeItem::sqrt() const
 {
-  return to_vector().arithmetic("sqrt", [](float a) { return std::sqrtf(a); });
+  return to_vector().arithmetic("sqrt", [](float a) { return std::sqrt(a); });
 }
 
 NodeItem NodeItem::sign() const
@@ -471,7 +470,7 @@ NodeItem NodeItem::sign() const
 
 NodeItem NodeItem::exp() const
 {
-  return to_vector().arithmetic("exp", [](float a) { return std::expf(a); });
+  return to_vector().arithmetic("exp", [](float a) { return std::exp(a); });
 }
 
 NodeItem NodeItem::convert(Type to_type) const

source/blender/nodes/shader/materialx/node_parser.cc

@@ -115,12 +115,12 @@ NodeItem NodeParser::get_input_default(int index, NodeItem::Type to_type)
 
 NodeItem NodeParser::get_input_link(const std::string &name, NodeItem::Type to_type)
 {
-  return get_input_link(node_->input_by_identifier(name), to_type);
+  return get_input_link(node_->input_by_identifier(name), to_type, false);
 }
 
 NodeItem NodeParser::get_input_link(int index, NodeItem::Type to_type)
 {
-  return get_input_link(node_->input_socket(index), to_type);
+  return get_input_link(node_->input_socket(index), to_type, false);
 }
 
 NodeItem NodeParser::get_input_value(const std::string &name, NodeItem::Type to_type)
@@ -167,6 +167,10 @@ NodeItem NodeParser::texcoord_node(NodeItem::Type type)
 NodeItem NodeParser::get_default(const bNodeSocket &socket, NodeItem::Type to_type)
 {
   NodeItem res = empty();
+  if (!NodeItem::is_arithmetic(to_type) && to_type != NodeItem::Type::Any) {
+    return res;
+  }
+
   switch (socket.type) {
     case SOCK_CUSTOM:
       /* Return empty */
@@ -195,7 +199,9 @@ NodeItem NodeParser::get_default(const bNodeSocket &socket, NodeItem::Type to_ty
   return res.convert(to_type);
 }
 
-NodeItem NodeParser::get_input_link(const bNodeSocket &socket, NodeItem::Type to_type)
+NodeItem NodeParser::get_input_link(const bNodeSocket &socket,
+                                    NodeItem::Type to_type,
+                                    bool use_group_default)
 {
   const bNodeLink *link = socket.link;
   if (!(link && link->is_used())) {
@@ -221,7 +227,8 @@ NodeItem NodeParser::get_input_link(const bNodeSocket &socket, NodeItem::Type to
                            link->fromsock,
                            to_type,
                            group_parser_,
-                           export_image_fn_)
+                           export_image_fn_,
+                           use_group_default)
         .compute_full();
   }
   if (from_node->is_group_input()) {
@@ -232,7 +239,8 @@ NodeItem NodeParser::get_input_link(const bNodeSocket &socket, NodeItem::Type to
                                 link->fromsock,
                                 to_type,
                                 group_parser_,
-                                export_image_fn_)
+                                export_image_fn_,
+                                use_group_default)
         .compute_full();
   }
 
@@ -252,7 +260,7 @@ NodeItem NodeParser::get_input_link(const bNodeSocket &socket, NodeItem::Type to
 
 NodeItem NodeParser::get_input_value(const bNodeSocket &socket, NodeItem::Type to_type)
 {
-  NodeItem res = get_input_link(socket, to_type);
+  NodeItem res = get_input_link(socket, to_type, true);
   if (!res) {
     res = get_default(socket, to_type);
   }

source/blender/nodes/shader/materialx/node_parser.h

@@ -18,7 +18,7 @@ extern struct CLG_LogRef *LOG_MATERIALX_SHADER;
 
 class GroupNodeParser;
 
-using ExportImageFunction = std::function<std::string(Main *,Scene *, Image *, ImageUser *)>;
+using ExportImageFunction = std::function<std::string(Main *, Scene *, Image *, ImageUser *)>;
 
 /**
  * This is base abstraction class for parsing Blender nodes into MaterialX nodes.
@@ -71,7 +71,9 @@ class NodeParser {
 
  private:
   NodeItem get_default(const bNodeSocket &socket, NodeItem::Type to_type);
-  NodeItem get_input_link(const bNodeSocket &socket, NodeItem::Type to_type);
+  NodeItem get_input_link(const bNodeSocket &socket,
+                          NodeItem::Type to_type,
+                          bool use_group_default);
   NodeItem get_input_value(const bNodeSocket &socket, NodeItem::Type to_type);
 };
 
@@ -123,8 +125,7 @@ struct NodeParserData {
   void node_shader_materialx(void *data, struct bNode *node, struct bNodeSocket *out) \
   { \
     materialx::NodeParserData *d = reinterpret_cast<materialx::NodeParserData *>(data); \
-    d->result = MaterialXNodeParser( \
+    d->result = MaterialXNodeParser(d->graph, \
-                    d->graph, \
                                     d->depsgraph, \
                                     d->material, \
                                     node, \