blender/io_mspgl/export_material.py

   1 import os
   2
   3 def create_technique_resource(material, resources):
   4         from .datafile import Resource, Statement, Token
   5         tech_res = Resource(material.name+".tech", "technique")
   6
   7         mat_res = resources[material.name+".mat"]
   8
   9         if material.render_mode=='CUSTOM':
  10                 for m in material.render_methods:
  11                         st = Statement("method", m.tag)
  12                         if mat_res and m.use_material:
  13                                 st.sub.append(tech_res.create_reference_statement("material", mat_res))
  14
  15                         shader = m.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
  26                         tech_res.statements.append(st)
  27         else:
  28                 base_method = "blended" if material.blended else ""
  29                 st = Statement("method", base_method)
  30                 if mat_res:
  31                         st.sub.append(tech_res.create_embed_statement("material", mat_res))
  32
  33                 if material.blended:
  34                         ss.sub.append(Statement("blend", Token("SRC_ALPHA"), Token("ONE_MINUS_SRC_ALPHA")))
  35
  36                 if material.render_mode!='CUSTOM':
  37                         if material.receive_shadows:
  38                                 st.sub.append(Statement("receive_shadows", True))
  39                         if material.image_based_lighting:
  40                                 st.sub.append(Statement("image_based_lighting", True))
  41
  42                 tech_res.statements.append(st)
  43
  44                 if material.cast_shadows:
  45                         st = Statement("method", "shadow")
  46                         st.sub.append(Statement("shader", "occluder.glsl.shader"))
  47                         tech_res.statements.append(st)
  48
  49                         st = Statement("method", "shadow_thsm")
  50                         st.sub.append(Statement("shader", "occluder_thsm.glsl.shader"))
  51                         tech_res.statements.append(st)
  52
  53         return tech_res
  54
  55 class MaterialExporter:
  56         def export_technique_resources(self, material, resources):
  57                 from .export_texture import SamplerExporter, TextureExporter
  58                 texture_export = TextureExporter()
  59                 sampler_export = SamplerExporter()
  60
  61                 from .material import Material
  62                 if type(material)!=Material:
  63                         material = Material(material)
  64
  65                 for p in material.properties:
  66                         if p.texture:
  67                                 tex_name = p.texture.image.name+".tex2d"
  68                                 if tex_name not in resources:
  69                                         resources[tex_name] = texture_export.export_texture(p.texture, p.tex_usage, invert_green=p.invert_green)
  70
  71                                 samp_name = sampler_export.get_sampler_name(p.texture)
  72                                 if samp_name not in resources:
  73                                         resources[samp_name] = sampler_export.export_sampler(p.texture)
  74
  75                 mat_name = material.name+".mat"
  76                 if mat_name not in resources:
  77                         if material.type:
  78                                 resources[mat_name] = self.export_material(material, resources)
  79                         else:
  80                                 resources[mat_name] = None
  81
  82         def export_technique(self, material, resources):
  83                 from .material import Material
  84                 if type(material)!=Material:
  85                         material = Material(material)
  86
  87                 return create_technique_resource(material, resources)
  88
  89         def export_material(self, material, resources):
  90                 from .datafile import Resource, Statement, Token
  91                 mat_res = Resource(material.name+".mat", "material")
  92
  93                 if material.type!="pbr" and material.type!="unlit":
  94                         raise Exception("Can't export material {} of unknown type {}".format(material.name, material.type))
  95
  96                 mat_res.statements.append(Statement("type", Token(material.type)));
  97                 for p in material.properties:
  98                         st = self.create_property_statement(mat_res, p, resources)
  99                         if st:
 100                                 mat_res.statements.append(st)
 101                 textures = [p.texture for p in material.properties if p.texture]
 102                 if textures:
 103                         from .export_texture import SamplerExporter
 104                         sampler_export = SamplerExporter()
 105                         mat_res.statements.append(mat_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(textures[0])]))
 106
 107                 return mat_res
 108
 109         def create_property_statement(self, mat_res, prop, resources):
 110                 from .datafile import Statement
 111                 if prop.texture:
 112                         tex_res = resources[prop.texture.image.name+".tex2d"]
 113                         from .util import basename
 114                         return mat_res.create_reference_statement(prop.tex_keyword, tex_res)
 115                 elif not prop.keyword:
 116                         return
 117                 elif type(prop.value)==tuple:
 118                         return Statement(prop.keyword, *prop.value)
 119                 else:
 120                         return Statement(prop.keyword, prop.value)
 121
 122
 123 class MaterialAtlasExporter:
 124         def __init__(self):
 125                 pass
 126
 127         def export_technique_resources(self, material_atlas, resources):
 128                 from .datafile import Resource, Statement, Token
 129                 base_color_name = material_atlas.name+"_base_color.tex2d"
 130                 base_color_res = resources.get(base_color_name)
 131                 if not base_color_res:
 132                         base_color_res = Resource(base_color_name, "texture2d")
 133
 134                         base_color_res.statements.append(Statement("storage", Token('SRGB_ALPHA'), *material_atlas.size))
 135                         base_color_res.statements.append(Statement("raw_data", material_atlas.base_color_data))
 136
 137                         resources[base_color_name] = base_color_res
 138
 139                 sampler_name = "nearest.samp"
 140                 sampler_res = resources.get(sampler_name)
 141                 if not sampler_res:
 142                         sampler_res = Resource(sampler_name, "sampler")
 143
 144                         sampler_res.statements.append(Statement("filter", Token('NEAREST')))
 145
 146                         resources[sampler_name] = sampler_res
 147
 148                 mat_name = material_atlas.name+".mat"
 149                 if mat_name not in resources:
 150                         mat_res = Resource(mat_name, "material")
 151                         mat_res.statements.append(Statement("type", Token('pbr')))
 152                         mat_res.statements.append(mat_res.create_reference_statement("base_color_map", base_color_res))
 153                         mat_res.statements.append(mat_res.create_reference_statement("sampler", sampler_res))
 154
 155                         resources[mat_name] = mat_res
 156
 157         def export_technique(self, material_atlas, resources):
 158                 return create_technique_resource(material_atlas, resources)