blender/io_mspgl/export_material.py

   1 import os
   2
   3 def create_technique_resource(material, resources):
   4         # This operates on a Blender material, not a custom object
   5         from .datafile import Resource, Statement
   6         tech_res = Resource(material.name+".tech", "technique")
   7
   8         mat_res = resources[material.name+".mat"]
   9
  10         st = Statement("pass", "")
  11         if mat_res:
  12                 st.sub.append(tech_res.create_embed_statement("material", mat_res))
  13
  14         if material.render_mode=='CUSTOM':
  15                 shader = material.shader
  16                 if shader.endswith(".glsl"):
  17                         shader += ".shader"
  18                 st.sub.append(Statement("shader", shader))
  19
  20                 if material.uniforms:
  21                         ss = Statement("uniforms")
  22                         for u in material.uniforms:
  23                                 ss.sub.append(Statement("uniform", u.name, *u.values[:u.size]))
  24                         st.sub.append(ss)
  25         else:
  26                 if material.receive_shadows:
  27                         st.sub.append(Statement("receive_shadows", True))
  28                 if material.image_based_lighting:
  29                         st.sub.append(Statement("image_based_lighting", True))
  30
  31         tech_res.statements.append(st)
  32
  33         if material.shadow_method!='NONE':
  34                 st = Statement("pass", "shadow")
  35                 if material.render_mode=='CUSTOM':
  36                         shader = material.shadow_shader or material.shader
  37                         if shader.endswith(".glsl"):
  38                                 shader += ".shader"
  39                         st.sub.append(Statement("shader", shader))
  40                 else:
  41                         st.sub.append(Statement("shader", "_occluder.glsl.shader"))
  42                 tech_res.statements.append(st)
  43
  44         return tech_res
  45
  46 class MaterialExporter:
  47         def create_texture_exporter(self):
  48                 from .export_texture import TextureExporter
  49                 texture_export = TextureExporter()
  50                 return texture_export
  51
  52         def export_technique_resources(self, material, resources):
  53                 from .export_texture import SamplerExporter
  54                 texture_export = self.create_texture_exporter()
  55                 sampler_export = SamplerExporter()
  56
  57                 from .material import Material
  58                 material = Material(material)
  59
  60                 for p in material.properties:
  61                         if p.texture:
  62                                 tex_name = p.texture.image.name+".tex2d"
  63                                 if tex_name not in resources:
  64                                         resources[tex_name] = texture_export.export_texture(p.texture, p.tex_usage, invert_green=p.invert_green)
  65
  66                                 samp_name = sampler_export.get_sampler_name(p.texture)
  67                                 if samp_name not in resources:
  68                                         resources[samp_name] = sampler_export.export_sampler(p.texture)
  69
  70                 mat_name = material.name+".mat"
  71                 if mat_name not in resources:
  72                         if material.type:
  73                                 resources[mat_name] = self.export_material(material, resources)
  74                         else:
  75                                 resources[mat_name] = None
  76
  77         def export_technique(self, material, resources):
  78                 return create_technique_resource(material, resources)
  79
  80         def export_material(self, material, resources):
  81                 from .datafile import Resource, Statement, Token
  82                 mat_res = Resource(material.name+".mat", "material")
  83
  84                 if material.type!="pbr" and material.type!="unlit":
  85                         raise Exception("Can't export material {} of unknown type {}".format(material.name, material.type))
  86
  87                 mat_res.statements.append(Statement("type", Token(material.type)));
  88                 for p in material.properties:
  89                         st = self.create_property_statement(mat_res, p, resources)
  90                         if st:
  91                                 mat_res.statements.append(st)
  92                 textures = [p.texture for p in material.properties if p.texture]
  93                 if textures and not all(t.default_filter for t in textures):
  94                         from .export_texture import SamplerExporter
  95                         sampler_tex = next(t for t in textures if not t.default_filter)
  96                         sampler_export = SamplerExporter()
  97                         mat_res.statements.append(mat_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(sampler_tex)]))
  98
  99                 return mat_res
 100
 101         def create_property_statement(self, mat_res, prop, resources):
 102                 from .datafile import Statement
 103                 if prop.texture:
 104                         tex_res = resources[prop.texture.image.name+".tex2d"]
 105                         from .util import basename
 106                         fn = basename(prop.texture.image.filepath)
 107                         if prop.texture.default_filter and fn:
 108                                 return Statement(prop.tex_keyword, fn)
 109                         else:
 110                                 return mat_res.create_reference_statement(prop.tex_keyword, tex_res)
 111                 elif not prop.keyword:
 112                         return
 113                 elif type(prop.value)==tuple:
 114                         return Statement(prop.keyword, *prop.value)
 115                 else:
 116                         return Statement(prop.keyword, prop.value)
 117
 118
 119 class MaterialAtlasExporter:
 120         def __init__(self):
 121                 pass
 122
 123         def export_technique_resources(self, material_atlas, resources):
 124                 from .datafile import Resource, Statement, Token
 125                 base_color_name = material_atlas.name+"_base_color.tex2d"
 126                 base_color_res = resources.get(base_color_name)
 127                 if not base_color_res:
 128                         base_color_res = Resource(base_color_name, "texture2d")
 129
 130                         base_color_res.statements.append(Statement("storage", Token('SRGB_ALPHA'), *material_atlas.size))
 131                         base_color_res.statements.append(Statement("raw_data", material_atlas.base_color_data))
 132
 133                         resources[base_color_name] = base_color_res
 134
 135                 sampler_name = "nearest.samp"
 136                 sampler_res = resources.get(sampler_name)
 137                 if not sampler_res:
 138                         sampler_res = Resource(sampler_name, "sampler")
 139
 140                         sampler_res.statements.append(Statement("filter", Token('NEAREST')))
 141
 142                         resources[sampler_name] = sampler_res
 143
 144                 mat_name = material_atlas.name+".mat"
 145                 if mat_name not in resources:
 146                         mat_res = Resource(mat_name, "material")
 147                         mat_res.statements.append(Statement("type", Token('pbr')))
 148                         mat_res.statements.append(mat_res.create_reference_statement("base_color_map", base_color_res))
 149                         mat_res.statements.append(mat_res.create_reference_statement("sampler", sampler_res))
 150
 151                         resources[mat_name] = mat_res
 152
 153         def export_technique(self, material_atlas, resources):
 154                 return create_technique_resource(material_atlas, resources)