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         if material.render_mode=='CUSTOM':
  11                 for m in material.render_methods:
  12                         st = Statement("method", m.tag)
  13                         if mat_res and m.use_material:
  14                                 st.sub.append(tech_res.create_reference_statement("material", mat_res))
  15
  16                         shader = m.shader
  17                         if shader.endswith(".glsl"):
  18                                 shader += ".shader"
  19                         st.sub.append(Statement("shader", shader))
  20
  21                         if material.uniforms:
  22                                 ss = Statement("uniforms")
  23                                 for u in material.uniforms:
  24                                         ss.sub.append(Statement("uniform", u.name, *u.values[:u.size]))
  25                                 st.sub.append(ss)
  26
  27                         tech_res.statements.append(st)
  28         else:
  29                 st = Statement("method", "")
  30                 if mat_res:
  31                         st.sub.append(tech_res.create_embed_statement("material", mat_res))
  32
  33                 if material.render_mode!='CUSTOM':
  34                         if material.receive_shadows:
  35                                 st.sub.append(Statement("receive_shadows", True))
  36                         if material.image_based_lighting:
  37                                 st.sub.append(Statement("image_based_lighting", True))
  38
  39                 tech_res.statements.append(st)
  40
  41                 if material.shadow_method!='NONE':
  42                         st = Statement("method", "shadow")
  43                         st.sub.append(Statement("shader", "occluder.glsl.shader"))
  44                         tech_res.statements.append(st)
  45
  46                         st = Statement("method", "shadow_thsm")
  47                         st.sub.append(Statement("shader", "occluder_thsm.glsl.shader"))
  48                         tech_res.statements.append(st)
  49
  50         return tech_res
  51
  52 class MaterialExporter:
  53         def create_texture_exporter(self):
  54                 from .export_texture import TextureExporter
  55                 texture_export = TextureExporter()
  56                 return texture_export
  57
  58         def export_technique_resources(self, material, resources):
  59                 from .export_texture import SamplerExporter
  60                 texture_export = self.create_texture_exporter()
  61                 sampler_export = SamplerExporter()
  62
  63                 from .material import Material
  64                 material = Material(material)
  65
  66                 for p in material.properties:
  67                         if p.texture:
  68                                 tex_name = p.texture.image.name+".tex2d"
  69                                 if tex_name not in resources:
  70                                         resources[tex_name] = texture_export.export_texture(p.texture, p.tex_usage, invert_green=p.invert_green)
  71
  72                                 samp_name = sampler_export.get_sampler_name(p.texture)
  73                                 if samp_name not in resources:
  74                                         resources[samp_name] = sampler_export.export_sampler(p.texture)
  75
  76                 mat_name = material.name+".mat"
  77                 if mat_name not in resources:
  78                         if material.type:
  79                                 resources[mat_name] = self.export_material(material, resources)
  80                         else:
  81                                 resources[mat_name] = None
  82
  83         def export_technique(self, material, resources):
  84                 return create_technique_resource(material, resources)
  85
  86         def export_material(self, material, resources):
  87                 from .datafile import Resource, Statement, Token
  88                 mat_res = Resource(material.name+".mat", "material")
  89
  90                 if material.type!="pbr" and material.type!="unlit":
  91                         raise Exception("Can't export material {} of unknown type {}".format(material.name, material.type))
  92
  93                 mat_res.statements.append(Statement("type", Token(material.type)));
  94                 for p in material.properties:
  95                         st = self.create_property_statement(mat_res, p, resources)
  96                         if st:
  97                                 mat_res.statements.append(st)
  98                 textures = [p.texture for p in material.properties if p.texture]
  99                 if textures:
 100                         from .export_texture import SamplerExporter
 101                         sampler_export = SamplerExporter()
 102                         mat_res.statements.append(mat_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(textures[0])]))
 103
 104                 return mat_res
 105
 106         def create_property_statement(self, mat_res, prop, resources):
 107                 from .datafile import Statement
 108                 if prop.texture:
 109                         tex_res = resources[prop.texture.image.name+".tex2d"]
 110                         from .util import basename
 111                         return mat_res.create_reference_statement(prop.tex_keyword, tex_res)
 112                 elif not prop.keyword:
 113                         return
 114                 elif type(prop.value)==tuple:
 115                         return Statement(prop.keyword, *prop.value)
 116                 else:
 117                         return Statement(prop.keyword, prop.value)
 118
 119
 120 class MaterialAtlasExporter:
 121         def __init__(self):
 122                 pass
 123
 124         def export_technique_resources(self, material_atlas, resources):
 125                 from .datafile import Resource, Statement, Token
 126                 base_color_name = material_atlas.name+"_base_color.tex2d"
 127                 base_color_res = resources.get(base_color_name)
 128                 if not base_color_res:
 129                         base_color_res = Resource(base_color_name, "texture2d")
 130
 131                         base_color_res.statements.append(Statement("storage", Token('SRGB_ALPHA'), *material_atlas.size))
 132                         base_color_res.statements.append(Statement("raw_data", material_atlas.base_color_data))
 133
 134                         resources[base_color_name] = base_color_res
 135
 136                 sampler_name = "nearest.samp"
 137                 sampler_res = resources.get(sampler_name)
 138                 if not sampler_res:
 139                         sampler_res = Resource(sampler_name, "sampler")
 140
 141                         sampler_res.statements.append(Statement("filter", Token('NEAREST')))
 142
 143                         resources[sampler_name] = sampler_res
 144
 145                 mat_name = material_atlas.name+".mat"
 146                 if mat_name not in resources:
 147                         mat_res = Resource(mat_name, "material")
 148                         mat_res.statements.append(Statement("type", Token('pbr')))
 149                         mat_res.statements.append(mat_res.create_reference_statement("base_color_map", base_color_res))
 150                         mat_res.statements.append(mat_res.create_reference_statement("sampler", sampler_res))
 151
 152                         resources[mat_name] = mat_res
 153
 154         def export_technique(self, material_atlas, resources):
 155                 return create_technique_resource(material_atlas, resources)