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         if mat_res:
  11                 st.sub.append(tech_res.create_embed_statement("material", mat_res))
  12
  13         if material.render_mode=='CUSTOM':
  14                 st.sub.append(Statement("shader", material.shader))
  15
  16         tech_res.statements.append(st)
  17
  18         return tech_res
  19
  20 class MaterialExporter:
  21         def __init__(self):
  22                 self.use_textures = True
  23                 self.inline_texture_data = False
  24
  25         def create_texture_exporter(self):
  26                 from .export_texture import TextureExporter
  27                 texture_export = TextureExporter()
  28                 texture_export.inline_data = self.inline_texture_data
  29                 return texture_export
  30
  31         def export_technique_resources(self, material, resources):
  32                 from .export_texture import SamplerExporter
  33                 texture_export = self.create_texture_exporter()
  34                 sampler_export = SamplerExporter()
  35
  36                 from .material import Material
  37                 material = Material(material)
  38
  39                 if self.use_textures:
  40                         for p in material.properties.values():
  41                                 if p.texture:
  42                                         tex_name = p.texture.image.name+".tex2d"
  43                                         if tex_name not in resources:
  44                                                 resources[tex_name] = texture_export.export_texture(p.texture, p.tex_usage)
  45
  46                                         samp_name = sampler_export.get_sampler_name(p.texture)
  47                                         if samp_name not in resources:
  48                                                 resources[samp_name] = sampler_export.export_sampler(p.texture)
  49
  50                 mat_name = material.name+".mat"
  51                 if mat_name not in resources:
  52                         if material.type:
  53                                 resources[mat_name] = self.export_material(material, resources=resources)
  54                         else:
  55                                 resources[mat_name] = None
  56
  57         def export_technique(self, material, *, resources):
  58                 return create_technique_resource(material, resources)
  59
  60         def export_material(self, material, *, resources):
  61                 from .datafile import Resource, Statement
  62                 mat_res = Resource(material.name+".mat", "material")
  63
  64                 if material.type!="pbr":
  65                         raise Exception("Can't export unknown material type "+material.type)
  66
  67                 st = Statement(material.type)
  68                 for kw, p in material.properties.items():
  69                         ss = self.create_property_statement(mat_res, p, kw, resources)
  70                         if ss:
  71                                 st.sub.append(ss)
  72                 if self.use_textures:
  73                         first_tex = (p.texture for p in material.properties.values() if p.texture).__next__()
  74                         if first_tex and not first_tex.default_filter:
  75                                 from .export_texture import SamplerExporter
  76                                 sampler_export = SamplerExporter()
  77                                 st.sub.append(mat_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(first_tex)]))
  78                 mat_res.statements.append(st)
  79
  80                 return mat_res
  81
  82         def create_property_statement(self, mat_res, prop, keyword, resources):
  83                 from .datafile import Statement
  84                 if self.use_textures and prop.texture:
  85                         tex_res = resources[prop.texture.image.name+".tex2d"]
  86                         from .util import basename
  87                         fn = basename(prop.texture.image.filepath)
  88                         if prop.texture.default_filter and fn:
  89                                 return Statement(keyword+"_map", fn)
  90                         else:
  91                                 return mat_res.create_reference_statement(keyword+"_map", tex_res)
  92                 elif prop.value is None:
  93                         return
  94                 elif type(prop.value)==tuple:
  95                         return Statement(keyword, *prop.value)
  96                 else:
  97                         return Statement(keyword, prop.value)
  98
  99
 100 class MaterialMapExporter:
 101         def __init__(self):
 102                 pass
 103
 104         def export_technique_resources(self, material_map, resources):
 105                 from .datafile import Resource, Statement, Token
 106                 base_color_name = material_map.name+"_base_color.tex2d"
 107                 base_color_res = resources.get(base_color_name)
 108                 if not base_color_res:
 109                         base_color_res = Resource(base_color_name, "texture2d")
 110
 111                         base_color_res.statements.append(Statement("storage", Token('SRGB_ALPHA'), *material_map.size))
 112                         base_color_res.statements.append(Statement("raw_data", material_map.base_color_data))
 113
 114                         resources[base_color_name] = base_color_res
 115
 116                 sampler_name = "nearest.samp"
 117                 sampler_res = resources.get(sampler_name)
 118                 if not sampler_res:
 119                         sampler_res = Resource(sampler_name, "sampler")
 120
 121                         sampler_res.statements.append(Statement("filter", Token('NEAREST')))
 122
 123                         resources[sampler_name] = sampler_res
 124
 125                 mat_name = material_map.name+".mat"
 126                 if mat_name not in resources:
 127                         mat_res = Resource(mat_name, "material")
 128                         st = Statement("pbr")
 129                         st.sub.append(mat_res.create_reference_statement("base_color_map", base_color_res))
 130                         st.sub.append(mat_res.create_reference_statement("sampler", sampler_res))
 131                         mat_res.statements.append(st)
 132
 133                         resources[mat_name] = mat_res
 134
 135         def export_technique(self, material_map, *, resources):
 136                 return create_technique_resource(material_map, resources)