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

@@ -10,11 +10,13 @@ namespace blender::nodes::materialx {
 NodeItem MathNodeParser::compute()
 {
   /* TODO: finish some math operations */
-  auto op = node_->custom1;
+  NodeMathOperation op = NodeMathOperation(node_->custom1);
   NodeItem res = empty();
 
   /* Single operand operations */
-  NodeItem x = get_input_value(0, NodeItem::Type::Any);
+  NodeItem x = get_input_value(0, NodeItem::Type::Float);
+  /* TODO: Seems we have to use average if Vector or Color are added */
+
   switch (op) {
     case NODE_MATH_SINE:
       res = x.sin();
@@ -82,7 +84,7 @@ NodeItem MathNodeParser::compute()
 
     default: {
       /* 2-operand operations */
-      NodeItem y = get_input_value(1, NodeItem::Type::Any);
+      NodeItem y = get_input_value(1, NodeItem::Type::Float);
       switch (op) {
         case NODE_MATH_ADD:
           res = x + y;
@@ -132,7 +134,7 @@ NodeItem MathNodeParser::compute()
 
         default: {
           /* 3-operand operations */
-          NodeItem z = get_input_value(2, NodeItem::Type::Any);
+          NodeItem z = get_input_value(2, NodeItem::Type::Float);
           switch (op) {
             case NODE_MATH_WRAP:
               CLOG_WARN(LOG_MATERIALX_SHADER, "Unimplemented math operation %d", op);

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

@@ -9,21 +9,20 @@ namespace blender::nodes::materialx {
 NodeItem TexCheckerNodeParser::compute()
 {
   NodeItem vector = get_input_link("Vector", NodeItem::Type::Vector2);
-  NodeItem color1 = get_input_value("Color1", NodeItem::Type::Color3);
-  NodeItem color2 = get_input_value("Color2", NodeItem::Type::Color3);
-  NodeItem scale = get_input_value("Scale", NodeItem::Type::Float);
-
   if (!vector) {
     vector = texcoord_node();
   }
+  NodeItem value1 = val(1.0f);
+  NodeItem value2 = val(0.0f);
+  if (STREQ(socket_out_->name, "Color")) {
+    value1 = get_input_value("Color1", NodeItem::Type::Color3);
+    value2 = get_input_value("Color2", NodeItem::Type::Color3);
+  }
+  NodeItem scale = get_input_value("Scale", NodeItem::Type::Float);
+
   vector = (vector * scale) % val(2.0f);
-  NodeItem mix = (vector.extract(0).floor() + vector.extract(1).floor())
-                     .if_else(NodeItem::CompareOp::Eq, val(1.0f), val(1.0f), val(0.0f));
-  NodeItem res = create_node("mix", NodeItem::Type::Color3);
-  res.set_input("fg", color1);
-  res.set_input("bg", color2);
-  res.set_input("mix", mix);
-  return res;
+  return (vector.extract(0).floor() + vector.extract(1).floor())
+      .if_else(NodeItem::CompareOp::Eq, val(1.0f), value1, value2);
 }
 
 }  // namespace blender::nodes::materialx

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

@@ -4,9 +4,7 @@
 
 #include "node_parser.h"
 
-#ifdef WITH_HYDRA
 #include "hydra/image.h"
-#endif
 
 #include "DEG_depsgraph_query.h"
 
@@ -14,22 +12,32 @@ namespace blender::nodes::materialx {
 
 NodeItem TexEnvironmentNodeParser::compute()
 {
+  NodeItem res = val(MaterialX::Color4(1.0f, 0.0f, 1.0f, 1.0f));
+
   Image *image = (Image *)node_->id;
+  if (!image) {
+    return res;
+  }
+
   NodeTexEnvironment *tex = static_cast<NodeTexEnvironment *>(node_->storage);
   Scene *scene = DEG_get_input_scene(depsgraph_);
   Main *bmain = DEG_get_bmain(depsgraph_);
-  std::string image_path;
 
-#ifdef WITH_HYDRA
   /* TODO: What if Blender built without Hydra? Also io::hydra::cache_or_get_image_file contains
    * pretty general code, so could be moved from bf_usd project. */
-  image_path = io::hydra::cache_or_get_image_file(bmain, scene, image, &tex->iuser);
-#endif
+  std::string image_path = io::hydra::cache_or_get_image_file(bmain, scene, image, &tex->iuser);
 
-  NodeItem texcoord = texcoord_node();
-  NodeItem res = create_node("image", NodeItem::Type::Color3);
+  NodeItem vector = get_input_link("Vector", NodeItem::Type::Vector2);
+  if (!vector) {
+    vector = texcoord_node();
+  }
+  /* TODO: fix texcoord of environment texture, some math should be applied */
+
+  res = create_node("image", NodeItem::Type::Color3);
   res.set_input("file", image_path, NodeItem::Type::Filename);
-  res.set_input("texcoord", texcoord);
+  res.set_input("texcoord", vector);
+  /* TODO: get other Tex environment node parameters */
+
   return res;
 }
 

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

@@ -4,9 +4,7 @@
 
 #include "node_parser.h"
 
-#ifdef WITH_HYDRA
-#  include "hydra/image.h"
-#endif
+#include "hydra/image.h"
 
 #include "DEG_depsgraph_query.h"
 
@@ -14,22 +12,33 @@ namespace blender::nodes::materialx {
 
 NodeItem TexImageNodeParser::compute()
 {
+  NodeItem res = val(MaterialX::Color4(1.0f, 0.0f, 1.0f, 1.0f));
+
   Image *image = (Image *)node_->id;
-  NodeTexImage *tex = static_cast<NodeTexImage *>(node_->storage);
+  if (image) {
+    NodeTexImage *tex_image = static_cast<NodeTexImage *>(node_->storage);
     Scene *scene = DEG_get_input_scene(depsgraph_);
     Main *bmain = DEG_get_bmain(depsgraph_);
-  std::string image_path;
 
-#ifdef WITH_HYDRA
     /* TODO: What if Blender built without Hydra? Also io::hydra::cache_or_get_image_file contains
      * pretty general code, so could be moved from bf_usd project. */
-  image_path = io::hydra::cache_or_get_image_file(bmain, scene, image, &tex->iuser);
-#endif
+    std::string image_path = io::hydra::cache_or_get_image_file(
+        bmain, scene, image, &tex_image->iuser);
 
-  NodeItem texcoord = texcoord_node();
-  NodeItem res = create_node("image", NodeItem::Type::Color3);
+    NodeItem texcoord = get_input_link("Vector", NodeItem::Type::Vector2);
+    if (!texcoord) {
+      texcoord = texcoord_node();
+    }
+
+    res = create_node("image", NodeItem::Type::Color4);
     res.set_input("file", image_path, NodeItem::Type::Filename);
     res.set_input("texcoord", texcoord);
+    /* TODO: get other Tex image node parameters */
+  }
+
+  if (STREQ(socket_out_->name, "Alpha")) {
+    res = res.extract(3);
+  }
   return res;
 }