Blender 2.8 - 4.5 Support

leenkx/blender/lnx/props_ui.py

@@ -8,6 +8,24 @@ import mathutils
 import bpy
 from bpy.props import *
 
+# Helper functions for Blender version compatibility  
+def get_panel_options():
+    """Get panel options compatible with current Blender version."""
+    if bpy.app.version >= (2, 93, 0):  # INSTANCED was introduced around 2.93
+        return {'INSTANCED'}
+    else:
+        return set()  # Empty set for older versions
+
+def column_with_heading(layout, heading='', align=False):
+    """Create a column with optional heading, compatible across Blender versions."""
+    if bpy.app.version >= (2, 92, 0):
+        return layout.column(heading=heading, align=align)
+    else:
+        col = layout.column(align=align)
+        if heading:
+            col.label(text=heading)
+        return col
+
 from lnx.lightmapper.panels import scene
 
 import lnx.api
@@ -939,13 +957,13 @@ class LNX_PT_LeenkxExporterPanel(bpy.types.Panel):
         col = layout.column()
         col.prop(wrd, 'lnx_project_icon')
 
-        col = layout.column(heading='Code Output', align=True)
+        col = column_with_heading(layout, 'Code Output', align=True)
         col.prop(wrd, 'lnx_dce')
         col.prop(wrd, 'lnx_compiler_inline')
         col.prop(wrd, 'lnx_minify_js')
         col.prop(wrd, 'lnx_no_traces')
 
-        col = layout.column(heading='Data', align=True)
+        col = column_with_heading(layout, 'Data', align=True)
         col.prop(wrd, 'lnx_minimize')
         col.prop(wrd, 'lnx_optimize_data')
         col.prop(wrd, 'lnx_asset_compression')
@@ -1178,32 +1196,32 @@ class LNX_PT_ProjectFlagsPanel(bpy.types.Panel):
         layout.use_property_decorate = False
         wrd = bpy.data.worlds['Lnx']
 
-        col = layout.column(heading='Debug', align=True)
+        col = column_with_heading(layout, 'Debug', align=True)
         col.prop(wrd, 'lnx_verbose_output')
         col.prop(wrd, 'lnx_cache_build')
         col.prop(wrd, 'lnx_clear_on_compile')
         col.prop(wrd, 'lnx_assert_level')
         col.prop(wrd, 'lnx_assert_quit')
 
-        col = layout.column(heading='Runtime', align=True)
+        col = column_with_heading(layout, 'Runtime', align=True)
         col.prop(wrd, 'lnx_live_patch')
         col.prop(wrd, 'lnx_stream_scene')
         col.prop(wrd, 'lnx_loadscreen')
         col.prop(wrd, 'lnx_write_config')
 
-        col = layout.column(heading='Renderer', align=True)
+        col = column_with_heading(layout, 'Renderer', align=True)
         col.prop(wrd, 'lnx_batch_meshes')
         col.prop(wrd, 'lnx_batch_materials')
         col.prop(wrd, 'lnx_deinterleaved_buffers')
         col.prop(wrd, 'lnx_export_tangents')
 
-        col = layout.column(heading='Quality')
+        col = column_with_heading(layout, 'Quality')
         row = col.row()  # To expand below property UI horizontally
         row.prop(wrd, 'lnx_canvas_img_scaling_quality', expand=True)
         col.prop(wrd, 'lnx_texture_quality')
         col.prop(wrd, 'lnx_sound_quality')
 
-        col = layout.column(heading='External Assets')
+        col = column_with_heading(layout, 'External Assets')
         col.prop(wrd, 'lnx_copy_override')
         col.operator('lnx.copy_to_bundled', icon='IMAGE_DATA')
 
@@ -1517,7 +1535,7 @@ class LNX_PT_TopbarPanel(bpy.types.Panel):
     bl_label = "Leenkx Player"
     bl_space_type = "VIEW_3D"
     bl_region_type = "WINDOW"
-    bl_options = {'INSTANCED'}
+    bl_options = get_panel_options()
 
     def draw_header(self, context):
         row = self.layout.row(align=True)
@@ -2921,7 +2939,7 @@ def draw_conditional_prop(layout: bpy.types.UILayout, heading: str, data: bpy.ty
     """Draws a property row with a checkbox that enables a value field.
     The function fails when prop_condition is not a boolean property.
     """
-    col = layout.column(heading=heading)
+    col = column_with_heading(layout, heading)
     row = col.row()
     row.prop(data, prop_condition, text='')
     sub = row.row()