materialx/material/__init__.py

@@ -11,7 +11,7 @@ from . import (
 register_classes, unregister_classes = bpy.utils.register_classes_factory([
     ui.MATERIAL_OP_new_mx_node_tree,
     ui.MATERIAL_OP_duplicate_mx_node_tree,
-    ui.MATERIAL_OP_convert_shader_to_mx,
+    ui.MATERIAL_OP_convert_to_materialx,
     ui.MATERIAL_OP_duplicate_mat_mx_node_tree,
     ui.MATERIAL_OP_link_mx_node_tree,
     ui.MATERIAL_OP_unlink_mx_node_tree,
@@ -24,8 +24,8 @@ register_classes, unregister_classes = bpy.utils.register_classes_factory([
     ui.MATERIAL_OP_invoke_popup_shader_nodes,
     ui.MATERIAL_OP_remove_node,
     ui.MATERIAL_OP_disconnect_node,
-    ui.MATERIAL_OP_export_mx_file,
+    ui.MATERIAL_OP_export_file,
-    ui.MATERIAL_OP_export_mx_console,
+    ui.MATERIAL_OP_export_console,
     ui.MATERIAL_PT_tools,
     ui.MATERIAL_PT_dev,
 ])

materialx/material/properties.py

@@ -8,9 +8,9 @@ import MaterialX as mx
 
 from ..node_tree import MxNodeTree
 from ..bl_nodes.output import ShaderNodeOutputMaterial
-from ..utils import MX_LIBS_DIR
+from ..utils import MX_LIBS_DIR, mx_properties, get_temp_file, MaterialXProperties, with_prefix
 
-from ..utils import logging, get_temp_file, MaterialXProperties
+from .. import logging
 log = logging.Log('material.properties')
 
 
@@ -18,7 +18,29 @@ class MaterialProperties(MaterialXProperties):
     bl_type = bpy.types.Material
 
     def update_mx_node_tree(self, context):
-        self.update()
+        # trying to show MaterialX area with node tree or Shader area
+
+        material = self.id_data
+        mx_node_tree = mx_properties(material).mx_node_tree
+
+        if not mx_node_tree:
+            return
+
+        screen = context.screen
+        if not hasattr(screen, 'areas'):
+            return
+
+        for window in context.window_manager.windows:
+            for area in window.screen.areas:
+                if area.ui_type not in (MxNodeTree.bl_idname, 'ShaderNodeTree'):
+                    continue
+
+                space = next(s for s in area.spaces if s.type == 'NODE_EDITOR')
+                if space.pin or space.shader_type != 'OBJECT':
+                    continue
+
+                area.ui_type = MxNodeTree.bl_idname
+                space.node_tree = mx_node_tree
 
     mx_node_tree: bpy.props.PointerProperty(type=MxNodeTree, update=update_mx_node_tree)
 
@@ -33,8 +55,8 @@ class MaterialProperties(MaterialXProperties):
                      node.bl_idname == ShaderNodeOutputMaterial.__name__ and
                      node.is_active_output), None)
 
-    def export(self, obj: bpy.types.Object) -> [mx.Document, None]:
+    def export(self, obj: bpy.types.Object, check_mx_node_tree=True) -> [mx.Document, None]:
-        if self.mx_node_tree:
+        if check_mx_node_tree and self.mx_node_tree:
             return self.mx_node_tree.export()
 
         material = self.id_data
@@ -51,19 +73,7 @@ class MaterialProperties(MaterialXProperties):
 
         return doc
 
-    def update(self, is_depsgraph=False):
+    def convert_to_materialx(self, obj: bpy.types.Object = None):
-        """
-        Main update callback function, which notifies that material was updated from both:
-        depsgraph or MaterialX node tree
-        """
-        if is_depsgraph and self.mx_node_tree:
-            return
-
-        material = self.id_data
-        # usd_node_tree.material_update(material)
-        # ViewportEngineScene.material_update(material)
-
-    def convert_shader_to_mx(self, obj: bpy.types.Object = None):
         mat = self.id_data
         output_node = self.output_node
         if not output_node:
@@ -95,6 +105,7 @@ class MaterialProperties(MaterialXProperties):
             mx.readFromXmlFile(doc, str(mtlx_file), searchPath=search_path)
             mx_node_tree.import_(doc, mtlx_file)
             self.mx_node_tree = mx_node_tree
+
         except Exception as e:
             log.error(traceback.format_exc(), mtlx_file)
             return False
@@ -102,16 +113,6 @@ class MaterialProperties(MaterialXProperties):
         return True
 
 
-def depsgraph_update(depsgraph):
-    if not depsgraph.updates:
-        return
-
-    # Undo operation sends modified object with other stuff (scene, collection, etc...)
-    mat = next((upd.id for upd in depsgraph.updates if isinstance(upd.id, bpy.types.Material)), None)
-    if mat:
-        mat.hdusd.update(True)
-
-
 register, unregister = bpy.utils.register_classes_factory((
     MaterialProperties,
 ))

materialx/material/ui.py

@@ -58,13 +58,13 @@ class MATERIAL_OP_duplicate_mx_node_tree(bpy.types.Operator):
         return {"FINISHED"}
 
 
-class MATERIAL_OP_convert_shader_to_mx(bpy.types.Operator):
+class MATERIAL_OP_convert_to_materialx(bpy.types.Operator):
     """Converts standard shader node tree to MaterialX node tree for selected material"""
-    bl_idname = utils.with_prefix('material_convert_shader_to_mx')
+    bl_idname = utils.with_prefix('material_convert_to_materialx')
     bl_label = "Convert to MaterialX"
 
     def execute(self, context):
-        if not mx_properties(context.material).convert_shader_to_mx(context.object):
+        if not mx_properties(context.material).convert_to_materialx(context.object):
             return {'CANCELLED'}
 
         return {"FINISHED"}
@@ -131,12 +131,12 @@ class MATERIAL_PT_materialx(bpy.types.Panel):
 
         if mat_materialx.mx_node_tree:
             row.prop(mat_materialx.mx_node_tree, 'name', text="")
-            row.operator(MATERIAL_OP_convert_shader_to_mx.bl_idname, icon='FILE_TICK', text="")
+            row.operator(MATERIAL_OP_convert_to_materialx.bl_idname, icon='FILE_TICK', text="")
             row.operator(MATERIAL_OP_duplicate_mx_node_tree.bl_idname, icon='DUPLICATE')
             row.operator(MATERIAL_OP_unlink_mx_node_tree.bl_idname, icon='X')
 
         else:
-            row.operator(MATERIAL_OP_convert_shader_to_mx.bl_idname, icon='FILE_TICK', text="Convert")
+            row.operator(MATERIAL_OP_convert_to_materialx.bl_idname, icon='FILE_TICK', text="Convert")
             row.operator(MATERIAL_OP_new_mx_node_tree.bl_idname, icon='ADD', text="")
 
 
@@ -404,15 +404,15 @@ class MATERIAL_PT_materialx_surfaceshader(MATERIAL_PT_materialx_output):
 
 
 class MATERIAL_PT_materialx_displacementshader(MATERIAL_PT_materialx_output):
-    bl_idname = utils.with_prefix('MATERIAL_PT_materialx_sdisplacementshader', '_', True)
+    bl_idname = utils.with_prefix('MATERIAL_PT_materialx_displacementshader', '_', True)
     bl_label = "Displacement Shader"
     bl_options = {'DEFAULT_CLOSED'}
 
     out_key = 'displacementshader'
 
 
-class MATERIAL_OP_export_mx_file(bpy.types.Operator, ExportHelper):
+class MATERIAL_OP_export_file(bpy.types.Operator, ExportHelper):
-    bl_idname = utils.with_prefix('material_export_mx_file')
+    bl_idname = utils.with_prefix('material_export_file')
     bl_label = "Export MaterialX"
     bl_description = "Export material as MaterialX node tree to .mtlx file"
 
@@ -465,7 +465,7 @@ class MATERIAL_OP_export_mx_file(bpy.types.Operator, ExportHelper):
     def execute(self, context):
         materialx_prop = mx_properties(context.material)
 
-        if not materialx_prop.convert_shader_to_mx():
+        if not materialx_prop.convert_to_materialx():
             return {'CANCELLED'}
 
         doc = mx_properties(context.material).export(None)
@@ -476,7 +476,7 @@ class MATERIAL_OP_export_mx_file(bpy.types.Operator, ExportHelper):
             self.filepath = str(Path(self.filepath).parent / context.material.name_full / Path(self.filepath).name)
 
         utils.export_mx_to_file(doc, self.filepath,
-                                mx_node_tree=materialx_prop.mx_node_tree,
+                                mx_node_tree=None,
                                 is_export_deps=self.is_export_deps,
                                 is_export_textures=self.is_export_textures,
                                 texture_dir_name=self.texture_dir_name,
@@ -498,13 +498,13 @@ class MATERIAL_OP_export_mx_file(bpy.types.Operator, ExportHelper):
         row.prop(self, 'texture_dir_name', text='')
 
 
-class MATERIAL_OP_export_mx_console(bpy.types.Operator):
+class MATERIAL_OP_export_console(bpy.types.Operator):
-    bl_idname = utils.with_prefix('material_export_mx_console')
+    bl_idname = utils.with_prefix('material_export_console')
-    bl_label = "Export MaterialX to Console"
+    bl_label = "Export to Console"
     bl_description = "Export material as MaterialX node tree to console"
 
     def execute(self, context):
-        doc = mx_properties(context.material).export(context.object)
+        doc = mx_properties(context.material).export(context.object, False)
         if not doc:
             return {'CANCELLED'}
 
@@ -526,10 +526,23 @@ class MATERIAL_PT_tools(bpy.types.Panel):
         return tree and tree.bl_idname == bpy.types.ShaderNodeTree.__name__
 
     def draw(self, context):
+        mat_materialx = mx_properties(context.material)
         layout = self.layout
 
-        layout.operator(MATERIAL_OP_convert_shader_to_mx.bl_idname, icon='FILE_TICK')
+        row = layout.row(align=True)
-        layout.operator(MATERIAL_OP_export_mx_file.bl_idname, text="Export MaterialX to file", icon='EXPORT')
+        row.menu(MATERIAL_MT_mx_node_tree.bl_idname, text="", icon='MATERIAL')
+
+        if mat_materialx.mx_node_tree:
+            row.prop(mat_materialx.mx_node_tree, 'name', text="")
+            row.operator(MATERIAL_OP_convert_to_materialx.bl_idname, icon='FILE_TICK', text="")
+            row.operator(MATERIAL_OP_duplicate_mx_node_tree.bl_idname, icon='DUPLICATE')
+            row.operator(MATERIAL_OP_unlink_mx_node_tree.bl_idname, icon='X')
+
+        else:
+            row.operator(MATERIAL_OP_convert_to_materialx.bl_idname, icon='FILE_TICK', text="Convert")
+            row.operator(MATERIAL_OP_new_mx_node_tree.bl_idname, icon='ADD', text="")
+
+        layout.operator(MATERIAL_OP_export_file.bl_idname, text="Export MaterialX to file", icon='EXPORT')
 
 
 class MATERIAL_PT_dev(bpy.types.Panel):
@@ -546,4 +559,4 @@ class MATERIAL_PT_dev(bpy.types.Panel):
 
     def draw(self, context):
         layout = self.layout
-        layout.operator(MATERIAL_OP_export_mx_console.bl_idname)
+        layout.operator(MATERIAL_OP_export_console.bl_idname)

materialx/node_tree.py

@@ -14,8 +14,6 @@ log = logging.Log('node_tree')
 NODE_LAYER_SEPARATION_WIDTH = 280
 NODE_LAYER_SHIFT_X = 30
 NODE_LAYER_SHIFT_Y = 100
-AREA_TO_UPDATE = 'PROPERTIES'
-REGION_TO_UPDATE = 'WINDOW'
 
 
 class MxNodeTree(bpy.types.ShaderNodeTree):
@@ -251,17 +249,7 @@ class MxNodeTree(bpy.types.ShaderNodeTree):
         self.update_()
 
     def update_(self):
-        for material in bpy.data.materials:
+        utils.update_ui()
-            if utils.mx_properties(material).mx_node_tree and \
-                    utils.mx_properties(material).mx_node_tree.name == self.name:
-                utils.mx_properties(material).update()
-
-        for window in bpy.context.window_manager.windows:
-            for area in window.screen.areas:
-                if area.type == AREA_TO_UPDATE:
-                    for region in area.regions:
-                        if region.type == REGION_TO_UPDATE:
-                            region.tag_redraw()
 
         # We have to call self.update_links via bpy.app.timers.register
         # to have slight delay after self.update(). It'll be called once

materialx/nodes/ui.py

@@ -50,7 +50,7 @@ class NODES_OP_import_file(bpy.types.Operator, ImportHelper):
 
 class NODES_OP_export_file(bpy.types.Operator, ExportHelper):
     bl_idname = utils.with_prefix('nodes_export_file')
-    bl_label = "Export MaterialX"
+    bl_label = "Export to File"
     bl_description = "Export MaterialX node tree to .mtlx file"
 
     # region properties
@@ -137,7 +137,7 @@ class NODES_OP_export_file(bpy.types.Operator, ExportHelper):
 
 class NODES_OP_export_console(bpy.types.Operator):
     bl_idname = utils.with_prefix('nodes_export_console')
-    bl_label = "Export MaterialX to Console"
+    bl_label = "Export to Console"
     bl_description = "Export MaterialX node tree to console"
 
     def execute(self, context):
@@ -183,7 +183,7 @@ class NODES_PT_tools(bpy.types.Panel):
 
         layout.operator(NODES_OP_create_basic_nodes.bl_idname, icon='ADD')
         layout.operator(NODES_OP_import_file.bl_idname, icon='IMPORT')
-        layout.operator(NODES_OP_export_file.bl_idname, icon='EXPORT', text='Export MaterialX to file')
+        layout.operator(NODES_OP_export_file.bl_idname, icon='EXPORT')
 
 
 class NODES_PT_dev(bpy.types.Panel):

materialx/utils.py

@@ -30,12 +30,6 @@ MATLIB_URL = "https://api.matlib.gpuopen.com/api"
 
 TEMP_FOLDER = "bl-materialx"
 
-SUPPORTED_FORMATS = {".png", ".jpeg", ".jpg", ".hdr", ".tga", ".bmp"}
-DEFAULT_FORMAT = ".hdr"
-BLENDER_DEFAULT_FORMAT = "HDR"
-BLENDER_DEFAULT_COLOR_MODE = "RGB"
-READONLY_IMAGE_FORMATS = {".dds"}  # blender can read these formats, but can't write
-
 os.environ['MATERIALX_SEARCH_PATH'] = str(MX_LIBS_DIR)
 
 
@@ -323,13 +317,13 @@ def export_mx_to_file(doc, filepath, *, mx_node_tree=None, is_export_deps=False,
                     dest_path = texture_dir / f"{source_path.stem}{source_path.suffix}"
 
                 shutil.copy(source_path, dest_path)
-                log(f"Export file {source_path} to {dest_path}: completed successfuly")
+                log(f"Export file {source_path} to {dest_path}: completed successfully")
 
             rel_dest_path = dest_path.relative_to(root_dir)
             mx_input.setValue(str(rel_dest_path), mx_input.getType())
 
     mx.writeToXmlFile(doc, filepath)
-    log(f"Export MaterialX to {filepath}: completed successfuly")
+    log(f"Export MaterialX to {filepath}: completed successfully")
 
 
 def temp_dir():
@@ -354,13 +348,14 @@ def get_temp_file(suffix, name=None, is_rand=False):
     return temp_dir() / name
 
 
-def cache_image_file(image: bpy.types.Image, cache_check=True):
 SUPPORTED_FORMATS = {".png", ".jpeg", ".jpg", ".hdr", ".tga", ".bmp"}
 DEFAULT_FORMAT = ".hdr"
 BLENDER_DEFAULT_FORMAT = "HDR"
 BLENDER_DEFAULT_COLOR_MODE = "RGB"
 READONLY_IMAGE_FORMATS = {".dds"}  # blender can read these formats, but can't write
 
+
+def cache_image_file(image: bpy.types.Image, cache_check=True):
     image_path = Path(image.filepath_from_user())
     if not image.packed_file and image.source != 'GENERATED':
         if not image_path.is_file():
@@ -401,6 +396,23 @@ def cache_image_file(image: bpy.types.Image, cache_check=True):
     return temp_path
 
 
+def cache_image_file_path(image_path, cache_check=True):
+    if image_path.suffix.lower() in SUPPORTED_FORMATS:
+        return image_path
+
+    if cache_check:
+        temp_path = get_temp_file(DEFAULT_FORMAT, image_path.name)
+        if temp_path.is_file():
+            return temp_path
+
+    image = bpy.data.images.load(str(image_path))
+    try:
+        return cache_image_file(image, cache_check)
+
+    finally:
+        bpy.data.images.remove(image)
+
+
 def pass_node_reroute(link):
     while isinstance(link.from_node, bpy.types.NodeReroute):
         if not link.from_node.inputs[0].links:
@@ -418,61 +430,3 @@ def update_ui(area_type='PROPERTIES', region_type='WINDOW'):
                 for region in area.regions:
                     if region.type == region_type:
                         region.tag_redraw()
-
-
-def cache_image_file(image: bpy.types.Image, cache_check=True):
-    image_path = Path(image.filepath_from_user())
-    if not image.packed_file and image.source != 'GENERATED':
-        if not image_path.is_file():
-            log.warn("Image is missing", image, image_path)
-            return None
-
-        image_suffix = image_path.suffix.lower()
-
-        if image_suffix in SUPPORTED_FORMATS and\
-                f".{image.file_format.lower()}" in SUPPORTED_FORMATS and not image.is_dirty:
-            return image_path
-
-        if image_suffix in READONLY_IMAGE_FORMATS:
-            return image_path
-
-    temp_path = get_temp_file(DEFAULT_FORMAT, image_path.stem)
-    if cache_check and image.source != 'GENERATED' and temp_path.is_file():
-        return temp_path
-
-    scene = bpy.context.scene
-    user_format = scene.render.image_settings.file_format
-    user_color_mode = scene.render.image_settings.color_mode
-
-    # in some scenes the color_mode is undefined
-    # we can read it but unable to assign back, so switch it to 'RGB' if color_mode isn't selected
-    if not user_color_mode:
-        user_color_mode = 'RGB'
-
-    scene.render.image_settings.file_format = BLENDER_DEFAULT_FORMAT
-    scene.render.image_settings.color_mode = BLENDER_DEFAULT_COLOR_MODE
-
-    try:
-        image.save_render(filepath=str(temp_path))
-    finally:
-        scene.render.image_settings.file_format = user_format
-        scene.render.image_settings.color_mode = user_color_mode
-
-    return temp_path
-
-
-def cache_image_file_path(image_path, cache_check=True):
-    if image_path.suffix.lower() in SUPPORTED_FORMATS:
-        return image_path
-
-    if cache_check:
-        temp_path = get_temp_file(DEFAULT_FORMAT, image_path.name)
-        if temp_path.is_file():
-            return temp_path
-
-    image = bpy.data.images.load(str(image_path))
-    try:
-        return cache_image_file(image, cache_check)
-
-    finally:
-        bpy.data.images.remove(image)