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                 st.sub.append(Statement("shader", "_occluder.glsl.shader"))
  36                 tech_res.statements.append(st)
  37
  38         return tech_res
  39
  40 class MaterialExporter:
  41         def create_texture_exporter(self):
  42                 from .export_texture import TextureExporter
  43                 texture_export = TextureExporter()
  44                 return texture_export
  45
  46         def export_technique_resources(self, material, resources):
  47                 from .export_texture import SamplerExporter
  48                 texture_export = self.create_texture_exporter()
  49                 sampler_export = SamplerExporter()
  50
  51                 from .material import Material
  52                 material = Material(material)
  53
  54                 for p in material.properties:
  55                         if p.texture:
  56                                 tex_name = p.texture.image.name+".tex2d"
  57                                 if tex_name not in resources:
  58                                         resources[tex_name] = texture_export.export_texture(p.texture, p.tex_usage, invert_green=p.invert_green)
  59
  60                                 samp_name = sampler_export.get_sampler_name(p.texture)
  61                                 if samp_name not in resources:
  62                                         resources[samp_name] = sampler_export.export_sampler(p.texture)
  63
  64                 mat_name = material.name+".mat"
  65                 if mat_name not in resources:
  66                         if material.type:
  67                                 resources[mat_name] = self.export_material(material, resources)
  68                         else:
  69                                 resources[mat_name] = None
  70
  71         def export_technique(self, material, resources):
  72                 return create_technique_resource(material, resources)
  73
  74         def export_material(self, material, resources):
  75                 from .datafile import Resource, Statement, Token
  76                 mat_res = Resource(material.name+".mat", "material")
  77
  78                 if material.type!="pbr" and material.type!="unlit":
  79                         raise Exception("Can't export material {} of unknown type {}".format(material.name, material.type))
  80
  81                 mat_res.statements.append(Statement("type", Token(material.type)));
  82                 for p in material.properties:
  83                         st = self.create_property_statement(mat_res, p, resources)
  84                         if st:
  85                                 mat_res.statements.append(st)
  86                 textures = [p.texture for p in material.properties if p.texture]
  87                 if textures and not all(t.default_filter for t in textures):
  88                         from .export_texture import SamplerExporter
  89                         sampler_tex = next(t for t in textures if not t.default_filter)
  90                         sampler_export = SamplerExporter()
  91                         mat_res.statements.append(mat_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(sampler_tex)]))
  92
  93                 return mat_res
  94
  95         def create_property_statement(self, mat_res, prop, resources):
  96                 from .datafile import Statement
  97                 if prop.texture:
  98                         tex_res = resources[prop.texture.image.name+".tex2d"]
  99                         from .util import basename
 100                         fn = basename(prop.texture.image.filepath)
 101                         if prop.texture.default_filter and fn:
 102                                 return Statement(prop.tex_keyword, fn)
 103                         else:
 104                                 return mat_res.create_reference_statement(prop.tex_keyword, tex_res)
 105                 elif not prop.keyword:
 106                         return
 107                 elif type(prop.value)==tuple:
 108                         return Statement(prop.keyword, *prop.value)
 109                 else:
 110                         return Statement(prop.keyword, prop.value)
 111
 112
 113 class MaterialAtlasExporter:
 114         def __init__(self):
 115                 pass
 116
 117         def export_technique_resources(self, material_atlas, resources):
 118                 from .datafile import Resource, Statement, Token
 119                 base_color_name = material_atlas.name+"_base_color.tex2d"
 120                 base_color_res = resources.get(base_color_name)
 121                 if not base_color_res:
 122                         base_color_res = Resource(base_color_name, "texture2d")
 123
 124                         base_color_res.statements.append(Statement("storage", Token('SRGB_ALPHA'), *material_atlas.size))
 125                         base_color_res.statements.append(Statement("raw_data", material_atlas.base_color_data))
 126
 127                         resources[base_color_name] = base_color_res
 128
 129                 sampler_name = "nearest.samp"
 130                 sampler_res = resources.get(sampler_name)
 131                 if not sampler_res:
 132                         sampler_res = Resource(sampler_name, "sampler")
 133
 134                         sampler_res.statements.append(Statement("filter", Token('NEAREST')))
 135
 136                         resources[sampler_name] = sampler_res
 137
 138                 mat_name = material_atlas.name+".mat"
 139                 if mat_name not in resources:
 140                         mat_res = Resource(mat_name, "material")
 141                         mat_res.statements.append(Statement("type", Token('pbr')))
 142                         mat_res.statements.append(mat_res.create_reference_statement("base_color_map", base_color_res))
 143                         mat_res.statements.append(mat_res.create_reference_statement("sampler", sampler_res))
 144
 145                         resources[mat_name] = mat_res
 146
 147         def export_technique(self, material_atlas, resources):
 148                 return create_technique_resource(material_atlas, resources)