blender/io_mspgl/export_material.py

   1 import os
   2
   3 def create_technique_resource(material, resources):
   4         from .datafile import Resource, Statement
   5         tech_res = Resource(material.name+".tech", "technique")
   6
   7         mat_res = resources[material.name+".mat"]
   8
   9         st = Statement("pass", "")
  10         st.sub.append(tech_res.create_embed_statement("material", mat_res))
  11
  12         if material.render_mode=='CUSTOM':
  13                 st.sub.append(Statement("shader", material.shader))
  14
  15         tech_res.statements.append(st)
  16
  17         return tech_res
  18
  19 class MaterialExporter:
  20         def __init__(self):
  21                 self.use_textures = True
  22                 self.inline_texture_data = False
  23
  24         def create_texture_exporter(self):
  25                 from .export_texture import TextureExporter
  26                 texture_export = TextureExporter()
  27                 texture_export.inline_data = self.inline_texture_data
  28                 return texture_export
  29
  30         def export_technique_resources(self, material, resources):
  31                 texture_export = self.create_texture_exporter()
  32
  33                 from .material import Material
  34                 material = Material(material)
  35
  36                 if self.use_textures:
  37                         for p in material.properties:
  38                                 if p.texture:
  39                                         tex_name = p.texture.image.name+".tex2d"
  40                                         if tex_name not in resources:
  41                                                 resources[tex_name] = texture_export.export_texture(p.texture, p.tex_usage)
  42
  43                 mat_name = material.name+".mat"
  44                 if mat_name not in resources:
  45                         resources[mat_name] = self.export_material(material, resources=resources)
  46
  47         def export_technique(self, material, *, resources):
  48                 return create_technique_resource(material, resources)
  49
  50         def export_material(self, material, *, resources):
  51                 from .datafile import Resource, Statement
  52                 mat_res = Resource(material.name+".mat", "material")
  53
  54                 st = Statement("pbr")
  55                 st.sub.append(self.create_property_statement(mat_res, material.base_color, "base_color", resources))
  56                 st.sub.append(self.create_property_statement(mat_res, material.metalness, "metalness", resources))
  57                 st.sub.append(self.create_property_statement(mat_res, material.roughness, "roughness", resources))
  58                 st.sub.append(self.create_property_statement(mat_res, material.normal, "normal", resources, tex_only=True))
  59                 st.sub.append(self.create_property_statement(mat_res, material.emission, "emission", resources))
  60                 mat_res.statements.append(st)
  61
  62                 return mat_res
  63
  64         def create_property_statement(self, mat_res, prop, keyword, resources, *, tex_only=False):
  65                 from .datafile import Statement
  66                 if self.use_textures and prop.texture:
  67                         tex_res = resources[prop.texture.image.name+".tex2d"]
  68                         fn = os.path.basename(prop.texture.image.filepath)
  69                         if prop.texture.default_filter and fn:
  70                                 return Statement(keyword+"_map", fn)
  71                         else:
  72                                 return mat_res.create_reference_statement(keyword+"_map", tex_res)
  73                 elif type(prop.value)==tuple:
  74                         return Statement(keyword, *prop.value)
  75                 else:
  76                         return Statement(keyword, prop.value)
  77
  78
  79 class MaterialMapExporter:
  80         def __init__(self):
  81                 pass
  82
  83         def export_technique_resources(self, material_map, resources):
  84                 from .datafile import Resource, Statement, Token
  85                 base_color_name = material_map.name+"_base_color.tex2d"
  86                 if base_color_name not in resources:
  87                         base_color_res = Resource(base_color_name, "texture2d")
  88
  89                         base_color_res.statements.append(Statement("min_filter", Token('NEAREST')))
  90                         base_color_res.statements.append(Statement("mag_filter", Token('NEAREST')))
  91                         base_color_res.statements.append(Statement("storage", Token('SRGB_ALPHA'), *material_map.size))
  92                         base_color_res.statements.append(Statement("raw_data", material_map.base_color_data))
  93
  94                         resources[base_color_name] = base_color_res
  95
  96                 mat_name = material_map.name+".mat"
  97                 if mat_name not in resources:
  98                         mat_res = Resource(mat_name, "material")
  99                         st = Statement("pbr")
 100                         st.sub.append(mat_res.create_reference_statement("base_color_map", base_color_res))
 101                         mat_res.statements.append(st)
 102
 103                         resources[mat_name] = mat_res
 104
 105         def export_technique(self, material_map, *, resources):
 106                 return create_technique_resource(material_map, resources)