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