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 __init__(self):
  31                 self.use_textures = True
  32                 self.inline_texture_data = False
  33
  34         def create_texture_exporter(self):
  35                 from .export_texture import TextureExporter
  36                 texture_export = TextureExporter()
  37                 texture_export.inline_data = self.inline_texture_data
  38                 return texture_export
  39
  40         def export_technique_resources(self, material, resources):
  41                 from .export_texture import SamplerExporter
  42                 texture_export = self.create_texture_exporter()
  43                 sampler_export = SamplerExporter()
  44
  45                 from .material import Material
  46                 material = Material(material)
  47
  48                 if self.use_textures:
  49                         for p in material.properties:
  50                                 if p.texture:
  51                                         tex_name = p.texture.image.name+".tex2d"
  52                                         if tex_name not in resources:
  53                                                 resources[tex_name] = texture_export.export_texture(p.texture, p.tex_usage)
  54
  55                                         samp_name = sampler_export.get_sampler_name(p.texture)
  56                                         if samp_name not in resources:
  57                                                 resources[samp_name] = sampler_export.export_sampler(p.texture)
  58
  59                 mat_name = material.name+".mat"
  60                 if mat_name not in resources:
  61                         if material.type:
  62                                 resources[mat_name] = self.export_material(material, resources=resources)
  63                         else:
  64                                 resources[mat_name] = None
  65
  66         def export_technique(self, material, *, resources):
  67                 return create_technique_resource(material, resources)
  68
  69         def export_material(self, material, *, resources):
  70                 from .datafile import Resource, Statement, Token
  71                 mat_res = Resource(material.name+".mat", "material")
  72
  73                 if material.type!="pbr" and material.type!="unlit":
  74                         raise Exception("Can't export unknown material type "+material.type)
  75
  76                 mat_res.statements.append(Statement("type", Token(material.type)));
  77                 for p in material.properties:
  78                         st = self.create_property_statement(mat_res, p, resources)
  79                         if st:
  80                                 mat_res.statements.append(st)
  81                 if self.use_textures:
  82                         textures = [p.texture for p in material.properties if p.texture]
  83                         if textures and not textures[0].default_filter:
  84                                 from .export_texture import SamplerExporter
  85                                 sampler_export = SamplerExporter()
  86                                 mat_res.statements.append(mat_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(textures[0])]))
  87
  88                 return mat_res
  89
  90         def create_property_statement(self, mat_res, prop, resources):
  91                 from .datafile import Statement
  92                 if self.use_textures and prop.texture:
  93                         tex_res = resources[prop.texture.image.name+".tex2d"]
  94                         from .util import basename
  95                         fn = basename(prop.texture.image.filepath)
  96                         if prop.texture.default_filter and fn:
  97                                 return Statement(prop.tex_keyword, fn)
  98                         else:
  99                                 return mat_res.create_reference_statement(prop.tex_keyword, tex_res)
 100                 elif not prop.keyword:
 101                         return
 102                 elif type(prop.value)==tuple:
 103                         return Statement(prop.keyword, *prop.value)
 104                 else:
 105                         return Statement(prop.keyword, prop.value)
 106
 107
 108 class MaterialAtlasExporter:
 109         def __init__(self):
 110                 pass
 111
 112         def export_technique_resources(self, material_atlas, resources):
 113                 from .datafile import Resource, Statement, Token
 114                 base_color_name = material_atlas.name+"_base_color.tex2d"
 115                 base_color_res = resources.get(base_color_name)
 116                 if not base_color_res:
 117                         base_color_res = Resource(base_color_name, "texture2d")
 118
 119                         base_color_res.statements.append(Statement("storage", Token('SRGB_ALPHA'), *material_atlas.size))
 120                         base_color_res.statements.append(Statement("raw_data", material_atlas.base_color_data))
 121
 122                         resources[base_color_name] = base_color_res
 123
 124                 sampler_name = "nearest.samp"
 125                 sampler_res = resources.get(sampler_name)
 126                 if not sampler_res:
 127                         sampler_res = Resource(sampler_name, "sampler")
 128
 129                         sampler_res.statements.append(Statement("filter", Token('NEAREST')))
 130
 131                         resources[sampler_name] = sampler_res
 132
 133                 mat_name = material_atlas.name+".mat"
 134                 if mat_name not in resources:
 135                         mat_res = Resource(mat_name, "material")
 136                         mat_res.statements.append(Statement("type", Token('pbr')))
 137                         mat_res.statements.append(mat_res.create_reference_statement("base_color_map", base_color_res))
 138                         mat_res.statements.append(mat_res.create_reference_statement("sampler", sampler_res))
 139
 140                         resources[mat_name] = mat_res
 141
 142         def export_technique(self, material_atlas, *, resources):
 143                 return create_technique_resource(material_atlas, resources)