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                 from .export_texture import SamplerExporter
  32                 texture_export = self.create_texture_exporter()
  33                 sampler_export = SamplerExporter()
  34
  35                 from .material import Material
  36                 material = Material(material)
  37
  38                 if self.use_textures:
  39                         for p in material.properties:
  40                                 if p.texture:
  41                                         tex_name = p.texture.image.name+".tex2d"
  42                                         if tex_name not in resources:
  43                                                 resources[tex_name] = texture_export.export_texture(p.texture, p.tex_usage)
  44
  45                                         samp_name = sampler_export.get_sampler_name(p.texture)
  46                                         if samp_name not in resources:
  47                                                 resources[samp_name] = sampler_export.export_sampler(p.texture)
  48
  49                 mat_name = material.name+".mat"
  50                 if mat_name not in resources:
  51                         resources[mat_name] = self.export_material(material, resources=resources)
  52
  53         def export_technique(self, material, *, resources):
  54                 return create_technique_resource(material, resources)
  55
  56         def export_material(self, material, *, resources):
  57                 from .datafile import Resource, Statement
  58                 mat_res = Resource(material.name+".mat", "material")
  59
  60                 st = Statement("pbr")
  61                 st.sub.append(self.create_property_statement(mat_res, material.base_color, "base_color", resources))
  62                 st.sub.append(self.create_property_statement(mat_res, material.metalness, "metalness", resources))
  63                 st.sub.append(self.create_property_statement(mat_res, material.roughness, "roughness", resources))
  64                 st.sub.append(self.create_property_statement(mat_res, material.normal, "normal", resources, tex_only=True))
  65                 st.sub.append(self.create_property_statement(mat_res, material.emission, "emission", resources))
  66                 if self.use_textures:
  67                         first_tex = (p.texture for p in material.properties if p.texture).__next__
  68                         if first_tex and not first_tex.default_filter:
  69                                 from .export_texture import SamplerExporter
  70                                 sampler_export = SamplerExporter()
  71                                 st.sub.append(mat_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(first_tex)]))
  72                 mat_res.statements.append(st)
  73
  74                 return mat_res
  75
  76         def create_property_statement(self, mat_res, prop, keyword, resources, *, tex_only=False):
  77                 from .datafile import Statement
  78                 if self.use_textures and prop.texture:
  79                         tex_res = resources[prop.texture.image.name+".tex2d"]
  80                         fn = os.path.basename(prop.texture.image.filepath)
  81                         if prop.texture.default_filter and fn:
  82                                 return Statement(keyword+"_map", fn)
  83                         else:
  84                                 return mat_res.create_reference_statement(keyword+"_map", tex_res)
  85                 elif type(prop.value)==tuple:
  86                         return Statement(keyword, *prop.value)
  87                 else:
  88                         return Statement(keyword, prop.value)
  89
  90
  91 class MaterialMapExporter:
  92         def __init__(self):
  93                 pass
  94
  95         def export_technique_resources(self, material_map, resources):
  96                 from .datafile import Resource, Statement, Token
  97                 base_color_name = material_map.name+"_base_color.tex2d"
  98                 base_color_res = resources.get(base_color_name)
  99                 if not base_color_res:
 100                         base_color_res = Resource(base_color_name, "texture2d")
 101
 102                         base_color_res.statements.append(Statement("storage", Token('SRGB_ALPHA'), *material_map.size))
 103                         base_color_res.statements.append(Statement("raw_data", material_map.base_color_data))
 104
 105                         resources[base_color_name] = base_color_res
 106
 107                 sampler_name = "nearest.samp"
 108                 sampler_res = resources.get(sampler_name)
 109                 if not sampler_res:
 110                         sampler_res = Resource(sampler_name, "sampler")
 111
 112                         sampler_res.statements.append(Statement("filter", Token('NEAREST')))
 113
 114                         resources[sampler_name] = sampler_res
 115
 116                 mat_name = material_map.name+".mat"
 117                 if mat_name not in resources:
 118                         mat_res = Resource(mat_name, "material")
 119                         st = Statement("pbr")
 120                         st.sub.append(mat_res.create_reference_statement("base_color_map", base_color_res))
 121                         st.sub.append(mat_res.create_reference_statement("sampler", sampler_res))
 122                         mat_res.statements.append(st)
 123
 124                         resources[mat_name] = mat_res
 125
 126         def export_technique(self, material_map, *, resources):
 127                 return create_technique_resource(material_map, resources)