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

@@ -10,7 +10,7 @@ NodeItem InvertNodeParser::compute()
 {
   NodeItem fac = get_input_value("Fac");
   NodeItem color = get_input_value("Color");
-  return fac.blend(color, fac.one() - color);
+  return fac.blend(color, fac.val(1.0f) - color);
 }
 
 }  // namespace blender::nodes::materialx

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

@@ -8,6 +8,7 @@ namespace blender::nodes::materialx {
 
 NodeItem MathNodeParser::compute()
 {
+  /* TODO: implement */
   return empty_value();
 }
 

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

@@ -8,6 +8,7 @@ namespace blender::nodes::materialx {
 
 NodeItem MixRGBNodeParser::compute()
 {
+  /* TODO: implement */
   return empty_value();
 }
 

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

@@ -10,6 +10,11 @@ namespace blender::nodes::materialx {
 
 NodeItem::NodeItem(MaterialX::GraphElement *graph) : graph_(graph) {}
 
+NodeItem NodeItem::empty() const
+{
+  return NodeItem(graph_);
+}
+
 void NodeItem::set_input(const std::string &name, const NodeItem &item)
 {
   if (item.value) {
@@ -59,121 +64,141 @@ NodeItem::operator bool() const
   return value || node;
 }
 
-NodeItem NodeItem::operator+(const NodeItem &other)
+NodeItem NodeItem::operator+(const NodeItem &other) const
 {
   return arithmetic(other, "add", [](float a, float b) { return a + b; });
 }
 
-NodeItem NodeItem::operator-(const NodeItem &other)
+NodeItem NodeItem::operator-(const NodeItem &other) const
 {
   return arithmetic(other, "subtract", [](float a, float b) { return a - b; });
 }
 
-NodeItem NodeItem::operator*(const NodeItem &other)
+NodeItem NodeItem::operator*(const NodeItem &other) const
 {
   return arithmetic(other, "multiply", [](float a, float b) { return a * b; });
 }
 
-NodeItem NodeItem::operator/(const NodeItem &other)
+NodeItem NodeItem::operator/(const NodeItem &other) const
 {
   return arithmetic(other, "divide", [](float a, float b) { return b == 0.0f ? 0.0f : a / b; });
 }
 
-NodeItem NodeItem::min(const NodeItem &other)
+bool NodeItem::operator==(const NodeItem &other) const
+{
+  if (node && node == other.node) {
+    return true;
+  }
+  /* TODO: implement */
+  return false;
+}
+
+NodeItem NodeItem::min(const NodeItem &other) const
 {
   return arithmetic(other, "min", [](float a, float b) { return std::min(a, b); });
 }
 
-NodeItem NodeItem::max(const NodeItem &other)
+NodeItem NodeItem::max(const NodeItem &other) const
 {
   return arithmetic(other, "max", [](float a, float b) { return std::max(a, b); });
 }
 
-NodeItem NodeItem::blend(const NodeItem &a, const NodeItem &b)
+NodeItem NodeItem::blend(const NodeItem &a, const NodeItem &b) const
 {
-  return *this * a + (one() - *this) * b;
+  return (val(1.0f) - *this) * a + *this * b;
 }
 
 NodeItem NodeItem::to_color3() const
 {
-  NodeItem res(graph_);
+  std::string t = type();
+  NodeItem res = empty();
   if (value) {
     MaterialX::Color3 c;
-    if (value->isA<float>()) {
+    if (t == "float") {
       float v = value->asA<float>();
       c = {v, v, v};
     }
-    else if (value->isA<MaterialX::Color3>()) {
+    else if (t == "color3") {
       auto v = value->asA<MaterialX::Color3>();
       c = {v[0], v[1], v[2]};
     }
-    else if (value->isA<MaterialX::Color4>()) {
+    else if (t == "color4") {
       auto v = value->asA<MaterialX::Color4>();
       c = {v[0], v[1], v[2]};
     }
-    else if (value->isA<MaterialX::Vector3>()) {
+    else if (t == "vector3") {
       auto v = value->asA<MaterialX::Vector3>();
       c = {v[0], v[1], v[2]};
     }
-    else if (value->isA<MaterialX::Vector4>()) {
+    else if (t == "vector4") {
       auto v = value->asA<MaterialX::Vector4>();
       c = {v[0], v[1], v[2]};
     }
     else {
-      /* Default color */
+      return res;
-      c = {0.0f, 0.0f, 0.0f};
     }
     res.value = MaterialX::Value::createValue<MaterialX::Color3>(c);
   }
   else if (node) {
+    if (t != "color3") {
+      return res;
+    }
     res.node = node;
   }
   return res;
 }
 
-NodeItem NodeItem::one() const
+bool NodeItem::is_numeric() const
 {
-  NodeItem res(graph_);
+  std::string t = type();
-  res = 1.0f;
+  return ELEM(t, "float", "color3", "color4", "vector2", "vector3", "vector4");
-  return res;
 }
 
-NodeItem NodeItem::arithmetic(const std::string &mx_category, std::function<float(float)> func)
+std::string NodeItem::type() const
 {
+  return value ? value->getTypeString() : node->getType();
+}
+
+NodeItem NodeItem::arithmetic(const std::string &mx_category,
+                              std::function<float(float)> func) const
+{
+  if (!is_numeric()) {
+    return empty();
+  }
+
   std::string t = value ? value->getTypeString() : node->getType();
   NodeItem res(graph_);
   if (value) {
-    if (value->isA<float>()) {
+    if (t == "float") {
       float v = value->asA<float>();
       res.value = MaterialX::Value::createValue<float>(func(v));
     }
-    else if (value->isA<MaterialX::Color3>()) {
+    else if (t == "color3") {
       auto v = value->asA<MaterialX::Color3>();
       res.value = MaterialX::Value::createValue<MaterialX::Color3>(
           {func(v[0]), func(v[1]), func(v[2])});
     }
-    else if (value->isA<MaterialX::Color4>()) {
+    else if (t == "color4") {
       auto v = value->asA<MaterialX::Color4>();
       res.value = MaterialX::Value::createValue<MaterialX::Color4>(
           {func(v[0]), func(v[1]), func(v[2]), func(v[3])});
     }
-    else if (value->isA<MaterialX::Vector2>()) {
+    else if (t == "vector2") {
       auto v = value->asA<MaterialX::Vector2>();
       res.value = MaterialX::Value::createValue<MaterialX::Vector2>({func(v[0]), func(v[1])});
     }
-    else if (value->isA<MaterialX::Vector3>()) {
+    else if (t == "vector3") {
       auto v = value->asA<MaterialX::Vector3>();
       res.value = MaterialX::Value::createValue<MaterialX::Vector3>(
           {func(v[0]), func(v[1]), func(v[2])});
     }
-    else if (value->isA<MaterialX::Vector4>()) {
+    else if (t == "vector4") {
       auto v = value->asA<MaterialX::Vector4>();
       res.value = MaterialX::Value::createValue<MaterialX::Vector4>(
           {func(v[0]), func(v[1]), func(v[2]), func(v[3])});
     }
     else {
-      /* Nothing change */
+      BLI_assert_unreachable();
-      res.value = value;
     }
   }
   else {
@@ -185,64 +210,121 @@ NodeItem NodeItem::arithmetic(const std::string &mx_category, std::function<floa
 
 NodeItem NodeItem::arithmetic(const NodeItem &other,
                               const std::string &mx_category,
-                              std::function<float(float, float)> func)
+                              std::function<float(float, float)> func) const
 {
-  std::string t1 = value ? value->getTypeString() : node->getType();
+  NodeItem res = empty();
-  std::string t2 = other.value ? other.value->getTypeString() : other.node->getType();
+  if (!is_numeric() || !other.is_numeric()) {
-  if (t1 != t2) {
+    return res;
-    return *this;
   }
 
-  NodeItem res(graph_);
+  std::string t1 = type();
+  std::string t2 = other.type();
+
   if (value && other.value) {
-    if (value->isA<float>()) {
+    std::string t = t1;
-      float v1 = value->asA<float>();
+    auto val1 = value;
-      float v2 = other.value->asA<float>();
+    auto val2 = other.value;
+    if (t1 != t2) {
+      if (t1 == "float") {
+        val1 = float_to_type(val1->asA<float>(), t2);
+        t = t2;
+      }
+      else if (t2 == "float") {
+        val2 = float_to_type(val2->asA<float>(), t1);
+      }
+      else {
+        return res;
+      }
+    }
+
+    if (t == "float") {
+      float v1 = val1->asA<float>();
+      float v2 = val2->asA<float>();
       res.value = MaterialX::Value::createValue<float>(func(v1, v2));
     }
-    else if (value->isA<MaterialX::Color3>()) {
+    else if (t == "color3") {
-      auto v1 = value->asA<MaterialX::Color3>();
+      auto v1 = val1->asA<MaterialX::Color3>();
-      auto v2 = other.value->asA<MaterialX::Color3>();
+      auto v2 = val2->asA<MaterialX::Color3>();
       res.value = MaterialX::Value::createValue<MaterialX::Color3>(
           {func(v1[0], v2[0]), func(v1[1], v2[1]), func(v1[2], v2[2])});
     }
-    else if (value->isA<MaterialX::Color4>()) {
+    else if (t == "color4") {
-      auto v1 = value->asA<MaterialX::Color4>();
+      auto v1 = val1->asA<MaterialX::Color4>();
-      auto v2 = other.value->asA<MaterialX::Color4>();
+      auto v2 = val2->asA<MaterialX::Color4>();
       res.value = MaterialX::Value::createValue<MaterialX::Color4>(
           {func(v1[0], v2[0]), func(v1[1], v2[1]), func(v1[2], v2[2]), func(v1[3], v2[3])});
     }
-    else if (value->isA<MaterialX::Vector2>()) {
+    else if (t == "vector2") {
-      auto v1 = value->asA<MaterialX::Vector2>();
+      auto v1 = val1->asA<MaterialX::Vector2>();
-      auto v2 = other.value->asA<MaterialX::Vector2>();
+      auto v2 = val2->asA<MaterialX::Vector2>();
       res.value = MaterialX::Value::createValue<MaterialX::Vector2>(
           {func(v1[0], v2[0]), func(v1[1], v2[1])});
     }
-    else if (value->isA<MaterialX::Vector3>()) {
+    else if (t == "vector3") {
-      auto v1 = value->asA<MaterialX::Vector3>();
+      auto v1 = val1->asA<MaterialX::Vector3>();
-      auto v2 = other.value->asA<MaterialX::Vector3>();
+      auto v2 = val2->asA<MaterialX::Vector3>();
       res.value = MaterialX::Value::createValue<MaterialX::Vector3>(
           {func(v1[0], v2[0]), func(v1[1], v2[1]), func(v1[2], v2[2])});
     }
-    else if (value->isA<MaterialX::Vector4>()) {
+    else if (t == "vector4") {
-      auto v1 = value->asA<MaterialX::Vector4>();
+      auto v1 = val1->asA<MaterialX::Vector4>();
-      auto v2 = other.value->asA<MaterialX::Vector4>();
+      auto v2 = val2->asA<MaterialX::Vector4>();
       res.value = MaterialX::Value::createValue<MaterialX::Vector4>(
           {func(v1[0], v2[0]), func(v1[1], v2[1]), func(v1[2], v2[2]), func(v1[3], v2[3])});
     }
     else {
-      /* default color */
+      BLI_assert_unreachable();
-      res.value = value;
     }
   }
   else {
-    res.node = graph_->addNode(mx_category, MaterialX::EMPTY_STRING, t1);
+    std::string t = t1;
-    res.set_input("in1", *this);
+    auto val1 = *this;
-    res.set_input("in2", other);
+    auto val2 = other;
+    if (t1 != t2) {
+      if (val1.value && t1 == "float") {
+        val1.value = float_to_type(val1.value->asA<float>(), t2);
+        t = t2;
+      }
+      else if (val2.value && t2 == "float") {
+        val2.value = float_to_type(val2.value->asA<float>(), t1);
+      }
+      else {
+        return res;
+      }
+    }
+
+    res.node = graph_->addNode(mx_category, MaterialX::EMPTY_STRING, t);
+    res.set_input("in1", val1);
+    res.set_input("in2", val2);
   }
   return res;
 }
 
+MaterialX::ValuePtr NodeItem::float_to_type(float v, std::string t) const
+{
+  if (t == "float") {
+    return MaterialX::Value::createValue<float>(v);
+  }
+  if (t == "color3") {
+    return MaterialX::Value::createValue<MaterialX::Color3>({v, v, v});
+  }
+  if (t == "color4") {
+    return MaterialX::Value::createValue<MaterialX::Color4>({v, v, v, 1.0f});
+  }
+  if (t == "vector2") {
+    return MaterialX::Value::createValue<MaterialX::Vector2>({v, v});
+  }
+  if (t == "vector3") {
+    return MaterialX::Value::createValue<MaterialX::Vector3>({v, v, v});
+  }
+  if (t == "vector4") {
+    return MaterialX::Value::createValue<MaterialX::Vector4>({v, v, v, 1.0f});
+  }
+
+  BLI_assert_unreachable();
+  return nullptr;
+}
+
 NodeParser::NodeParser(MaterialX::GraphElement *graph,
                        const Depsgraph *depsgraph,
                        const Material *material,

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

@@ -24,6 +24,9 @@ class NodeItem {
   NodeItem(MaterialX::GraphElement *graph);
   ~NodeItem() = default;
 
+  NodeItem empty() const;
+  template<class T> NodeItem val(const T &data) const;
+
   template<class T>
   void set_input(const std::string &name, const T &value, const std::string &mx_type);
   void set_input(const std::string &name, const NodeItem &item);
@@ -31,39 +34,41 @@ class NodeItem {
   void set_input(const std::string &name, const MaterialX::NodePtr node);
 
   operator bool() const;
-  template<class T> NodeItem &operator=(const T &value);
+  NodeItem operator+(const NodeItem &other) const;
-  NodeItem operator+(const NodeItem &other);
+  NodeItem operator-(const NodeItem &other) const;
-  NodeItem operator-(const NodeItem &other);
+  NodeItem operator*(const NodeItem &other) const;
-  NodeItem operator*(const NodeItem &other);
+  NodeItem operator/(const NodeItem &other) const;
-  NodeItem operator/(const NodeItem &other);
+  bool operator==(const NodeItem &other) const;
 
-  NodeItem min(const NodeItem &other);
+  NodeItem min(const NodeItem &other) const;
-  NodeItem max(const NodeItem &other);
+  NodeItem max(const NodeItem &other) const;
-  NodeItem blend(const NodeItem &a, const NodeItem &b);
+  NodeItem blend(const NodeItem &a, const NodeItem &b) const;
 
   NodeItem to_color3() const;
-  NodeItem one() const;
+  bool is_numeric() const;
+  std::string type() const;
 
  private:
-  NodeItem arithmetic(const std::string &mx_category, std::function<float(float)> func);
+  NodeItem arithmetic(const std::string &mx_category, std::function<float(float)> func) const;
   NodeItem arithmetic(const NodeItem &other,
                       const std::string &mx_category,
-                      std::function<float(float, float)> func);
+                      std::function<float(float, float)> func) const;
+  MaterialX::ValuePtr float_to_type(float v, std::string t) const;
 };
 
+template<class T> NodeItem NodeItem::val(const T &data) const
+{
+  NodeItem res(graph_);
+  res.value = MaterialX::Value::createValue<T>(data);
+  return res;
+}
+
 template<class T>
 void NodeItem::set_input(const std::string &name, const T &value, const std::string &mx_type)
 {
   node->setInputValue(name, value, mx_type);
 }
 
-template<class T> NodeItem &NodeItem::operator=(const T &value)
-{
-  this->value = MaterialX::Value::createValue<T>(value);
-  node = nullptr;
-  return *this;
-}
-
 class NodeParser {
  public:
   MaterialX::GraphElement *graph;