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         elif material.receive_shadows:
  25                 st.sub.append(Statement("receive_shadows", True))
  26
  27         tech_res.statements.append(st)
  28
  29         if material.shadow_method!='NONE':
  30                 st = Statement("pass", "shadow")
  31                 st.sub.append(Statement("shader", "_occluder.glsl.shader"))
  32                 tech_res.statements.append(st)
  33
  34         return tech_res
  35
  36 class MaterialExporter:
  37         def create_texture_exporter(self):
  38                 from .export_texture import TextureExporter
  39                 texture_export = TextureExporter()
  40                 return texture_export
  41
  42         def export_technique_resources(self, material, resources):
  43                 from .export_texture import SamplerExporter
  44                 texture_export = self.create_texture_exporter()
  45                 sampler_export = SamplerExporter()
  46
  47                 from .material import Material
  48                 material = Material(material)
  49
  50                 for p in material.properties:
  51                         if p.texture:
  52                                 tex_name = p.texture.image.name+".tex2d"
  53                                 if tex_name not in resources:
  54                                         resources[tex_name] = texture_export.export_texture(p.texture, p.tex_usage, invert_green=p.invert_green)
  55
  56                                 samp_name = sampler_export.get_sampler_name(p.texture)
  57                                 if samp_name not in resources:
  58                                         resources[samp_name] = sampler_export.export_sampler(p.texture)
  59
  60                 mat_name = material.name+".mat"
  61                 if mat_name not in resources:
  62                         if material.type:
  63                                 resources[mat_name] = self.export_material(material, resources)
  64                         else:
  65                                 resources[mat_name] = None
  66
  67         def export_technique(self, material, resources):
  68                 return create_technique_resource(material, resources)
  69
  70         def export_material(self, material, resources):
  71                 from .datafile import Resource, Statement, Token
  72                 mat_res = Resource(material.name+".mat", "material")
  73
  74                 if material.type!="pbr" and material.type!="unlit":
  75                         raise Exception("Can't export material {} of unknown type {}".format(material.name, material.type))
  76
  77                 mat_res.statements.append(Statement("type", Token(material.type)));
  78                 for p in material.properties:
  79                         st = self.create_property_statement(mat_res, p, resources)
  80                         if st:
  81                                 mat_res.statements.append(st)
  82                 textures = [p.texture for p in material.properties if p.texture]
  83                 if textures and not all(t.default_filter for t in textures):
  84                         from .export_texture import SamplerExporter
  85                         sampler_tex = next(t for t in textures if not t.default_filter)
  86                         sampler_export = SamplerExporter()
  87                         mat_res.statements.append(mat_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(sampler_tex)]))
  88
  89                 return mat_res
  90
  91         def create_property_statement(self, mat_res, prop, resources):
  92                 from .datafile import Statement
  93                 if prop.texture:
  94                         tex_res = resources[prop.texture.image.name+".tex2d"]
  95                         from .util import basename
  96                         fn = basename(prop.texture.image.filepath)
  97                         if prop.texture.default_filter and fn:
  98                                 return Statement(prop.tex_keyword, fn)
  99                         else:
 100                                 return mat_res.create_reference_statement(prop.tex_keyword, tex_res)
 101                 elif not prop.keyword:
 102                         return
 103                 elif type(prop.value)==tuple:
 104                         return Statement(prop.keyword, *prop.value)
 105                 else:
 106                         return Statement(prop.keyword, prop.value)
 107
 108
 109 class MaterialAtlasExporter:
 110         def __init__(self):
 111                 pass
 112
 113         def export_technique_resources(self, material_atlas, resources):
 114                 from .datafile import Resource, Statement, Token
 115                 base_color_name = material_atlas.name+"_base_color.tex2d"
 116                 base_color_res = resources.get(base_color_name)
 117                 if not base_color_res:
 118                         base_color_res = Resource(base_color_name, "texture2d")
 119
 120                         base_color_res.statements.append(Statement("storage", Token('SRGB_ALPHA'), *material_atlas.size))
 121                         base_color_res.statements.append(Statement("raw_data", material_atlas.base_color_data))
 122
 123                         resources[base_color_name] = base_color_res
 124
 125                 sampler_name = "nearest.samp"
 126                 sampler_res = resources.get(sampler_name)
 127                 if not sampler_res:
 128                         sampler_res = Resource(sampler_name, "sampler")
 129
 130                         sampler_res.statements.append(Statement("filter", Token('NEAREST')))
 131
 132                         resources[sampler_name] = sampler_res
 133
 134                 mat_name = material_atlas.name+".mat"
 135                 if mat_name not in resources:
 136                         mat_res = Resource(mat_name, "material")
 137                         mat_res.statements.append(Statement("type", Token('pbr')))
 138                         mat_res.statements.append(mat_res.create_reference_statement("base_color_map", base_color_res))
 139                         mat_res.statements.append(mat_res.create_reference_statement("sampler", sampler_res))
 140
 141                         resources[mat_name] = mat_res
 142
 143         def export_technique(self, material_atlas, resources):
 144                 return create_technique_resource(material_atlas, resources)