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

@@ -100,7 +100,7 @@ NodeItem GroupOutputNodeParser::compute_full()
   res = compute();
   return res;
 #else
-  return NodeParser::compute_full();
+  return compute();
 #endif
 }
 
@@ -144,7 +144,7 @@ NodeItem GroupInputNodeParser::compute_full()
   res = compute();
   return res;
 #else
-  return NodeParser::compute_full();
+  return compute();
 #endif
 }
 

source/blender/nodes/shader/nodes/node_shader_tex_environment.cc

@@ -11,6 +11,10 @@
 
 #include "IMB_colormanagement.h"
 
+#include "hydra/image.h"
+
+#include "DEG_depsgraph_query.h"
+
 namespace blender::nodes::node_shader_tex_environment_cc {
 
 static void node_declare(NodeDeclarationBuilder &b)
@@ -130,8 +134,50 @@ static int node_shader_gpu_tex_environment(GPUMaterial *mat,
 NODE_SHADER_MATERIALX_BEGIN
 #ifdef WITH_MATERIALX
 {
-  /* TODO: Implement */
+  NodeItem res = val(MaterialX::Color4(1.0f, 0.0f, 1.0f, 1.0f));
-  return empty();
+
+  Image *image = (Image *)node_->id;
+  if (!image) {
+    return res;
+  }
+
+  NodeTexEnvironment *tex_env = static_cast<NodeTexEnvironment *>(node_->storage);
+  Scene *scene = DEG_get_input_scene(depsgraph_);
+  Main *bmain = DEG_get_bmain(depsgraph_);
+
+  /* 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. */
+  std::string image_path = io::hydra::cache_or_get_image_file(
+      bmain, scene, image, &tex_env->iuser);
+
+  NodeItem vector = get_input_link("Vector", NodeItem::Type::Vector2);
+  if (!vector) {
+    vector = texcoord_node();
+  }
+  /* TODO: texcoords should be translated to spherical coordinates */
+
+  std::string filtertype;
+  switch (tex_env->interpolation) {
+    case SHD_INTERP_LINEAR:
+      filtertype = "linear";
+      break;
+    case SHD_INTERP_CLOSEST:
+      filtertype = "closest";
+      break;
+    case SHD_INTERP_CUBIC:
+    case SHD_INTERP_SMART:
+      filtertype = "cubic";
+      break;
+    default:
+      BLI_assert_unreachable();
+  }
+
+  res = create_node("image", NodeItem::Type::Color4);
+  res.set_input("file", image_path, NodeItem::Type::Filename);
+  res.set_input("texcoord", vector);
+  res.set_input("filtertype", val(filtertype));
+
+  return res;
 }
 #endif
 NODE_SHADER_MATERIALX_END

source/blender/nodes/shader/nodes/node_shader_tex_image.cc

@@ -179,7 +179,14 @@ static int node_shader_gpu_tex_image(GPUMaterial *mat,
 NODE_SHADER_MATERIALX_BEGIN
 #ifdef WITH_MATERIALX
 {
-  NodeItem res = val(MaterialX::Color4(1.0f, 0.0f, 1.0f, 1.0f));
+  /* Getting node name for Color output. This name will be used for <image> node. */
+  std::string image_node_name = node_name();
+  image_node_name = image_node_name.substr(0, image_node_name.rfind('_')) + "_Color";
+
+  NodeItem res = empty();
+  res.node = graph_->getNode(image_node_name);
+  if (!res.node) {
+    res = val(MaterialX::Color4(1.0f, 0.0f, 1.0f, 1.0f));
 
     Image *image = (Image *)node_->id;
     if (image) {
@@ -187,8 +194,8 @@ NODE_SHADER_MATERIALX_BEGIN
       Scene *scene = DEG_get_input_scene(depsgraph_);
       Main *bmain = DEG_get_bmain(depsgraph_);
 
-    /* TODO: What if Blender built without Hydra? Also io::hydra::cache_or_get_image_file contains
+      /* TODO: What if Blender built without Hydra? Also io::hydra::cache_or_get_image_file
-     * pretty general code, so could be moved from bf_usd project. */
+       * contains pretty general code, so could be moved from bf_usd project. */
       std::string image_path = io::hydra::cache_or_get_image_file(
           bmain, scene, image, &tex_image->iuser);
 
@@ -238,6 +245,7 @@ NODE_SHADER_MATERIALX_BEGIN
       res.set_input("uaddressmode", val(addressmode));
       res.set_input("vaddressmode", val(addressmode));
     }
+  }
 
   if (STREQ(socket_out_->name, "Alpha")) {
     res = res.extract(3);