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         blend_st = None
  10         if material.blend_type=='ALPHA':
  11                 blend_st = Statement("blend", Token("SRC_ALPHA"), Token("ONE_MINUS_SRC_ALPHA"))
  12         elif material.blend_type=='ADDITIVE':
  13                 blend_st = Statement("blend", Token("ONE"), Token("ONE"))
  14         elif material.blend_type=='ADDITIVE_ALPHA':
  15                 blend_st = Statement("blend", Token("SRC_ALPHA"), Token("ONE"))
  16
  17         if material.render_mode=='CUSTOM':
  18                 for m in material.render_methods:
  19                         st = Statement("method", m.tag)
  20                         if mat_res and m.use_material:
  21                                 st.sub.append(tech_res.create_reference_statement("material", mat_res))
  22
  23                         if m.tag=="blended" and blend_st:
  24                                 st.sub.append(blend_st)
  25
  26                         shader = m.shader
  27                         if shader.endswith(".glsl"):
  28                                 shader += ".shader"
  29                         st.sub.append(Statement("shader", shader))
  30
  31                         if material.uniforms:
  32                                 ss = Statement("uniforms")
  33                                 for u in material.uniforms:
  34                                         ss.sub.append(Statement("uniform", u.name, *u.values[:u.size]))
  35                                 st.sub.append(ss)
  36
  37                         tech_res.statements.append(st)
  38         else:
  39                 base_method = "blended" if material.blend_type!='NONE' else ""
  40                 st = Statement("method", base_method)
  41                 if mat_res:
  42                         st.sub.append(tech_res.create_embed_statement("material", mat_res))
  43
  44                 if blend_st:
  45                         st.sub.append(blend_st)
  46                 if material.receive_shadows:
  47                         st.sub.append(Statement("receive_shadows", True))
  48                 if material.image_based_lighting:
  49                         st.sub.append(Statement("image_based_lighting", True))
  50
  51                 tech_res.statements.append(st)
  52
  53                 if material.cast_shadows:
  54                         st = Statement("method", "shadow")
  55                         st.sub.append(Statement("shader", "occluder.glsl.shader"))
  56                         tech_res.statements.append(st)
  57
  58                         st = Statement("method", "shadow_thsm")
  59                         st.sub.append(Statement("shader", "occluder_thsm.glsl.shader"))
  60                         tech_res.statements.append(st)
  61
  62         return tech_res
  63
  64 class MaterialExporter:
  65         def export_technique_resources(self, material, resources):
  66                 from .export_texture import SamplerExporter, TextureExporter
  67                 texture_export = TextureExporter()
  68                 sampler_export = SamplerExporter()
  69
  70                 from .material import Material
  71                 if type(material)!=Material:
  72                         material = Material(material)
  73
  74                 for p in material.properties:
  75                         if p.texture:
  76                                 tex_name = p.texture.image.name+".tex2d"
  77                                 if tex_name not in resources:
  78                                         resources[tex_name] = texture_export.export_texture(p.texture, p.tex_usage, invert_green=p.invert_green)
  79
  80                                 samp_name = sampler_export.get_sampler_name(p.texture)
  81                                 if samp_name not in resources:
  82                                         resources[samp_name] = sampler_export.export_sampler(p.texture)
  83
  84                 mat_name = material.name+".mat"
  85                 if mat_name not in resources:
  86                         if material.type:
  87                                 resources[mat_name] = self.export_material(material, resources)
  88                         else:
  89                                 resources[mat_name] = None
  90
  91         def export_technique(self, material, resources):
  92                 from .material import Material
  93                 if type(material)!=Material:
  94                         material = Material(material)
  95
  96                 return create_technique_resource(material, resources)
  97
  98         def export_material(self, material, resources):
  99                 from .datafile import Resource, Statement, Token
 100                 mat_res = Resource(material.name+".mat", "material")
 101
 102                 if material.type!="pbr" and material.type!="unlit":
 103                         raise Exception("Can't export material {} of unknown type {}".format(material.name, material.type))
 104
 105                 mat_res.statements.append(Statement("type", Token(material.type)));
 106                 for p in material.properties:
 107                         st = self.create_property_statement(mat_res, p, resources)
 108                         if st:
 109                                 mat_res.statements.append(st)
 110                 textures = [p.texture for p in material.properties if p.texture]
 111                 if textures:
 112                         from .export_texture import SamplerExporter
 113                         sampler_export = SamplerExporter()
 114                         mat_res.statements.append(mat_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(textures[0])]))
 115
 116                 return mat_res
 117
 118         def create_property_statement(self, mat_res, prop, resources):
 119                 from .datafile import Statement
 120                 if prop.texture:
 121                         tex_res = resources[prop.texture.image.name+".tex2d"]
 122                         from .util import basename
 123                         return mat_res.create_reference_statement(prop.tex_keyword, tex_res)
 124                 elif not prop.keyword:
 125                         return
 126                 elif type(prop.value)==tuple:
 127                         return Statement(prop.keyword, *prop.value)
 128                 else:
 129                         return Statement(prop.keyword, prop.value)
 130
 131
 132 class MaterialAtlasExporter:
 133         def __init__(self):
 134                 pass
 135
 136         def export_technique_resources(self, material_atlas, resources):
 137                 from .datafile import Resource, Statement, Token
 138                 base_color_name = material_atlas.name+"_base_color.tex2d"
 139                 base_color_res = resources.get(base_color_name)
 140                 if not base_color_res:
 141                         base_color_res = Resource(base_color_name, "texture2d")
 142
 143                         base_color_res.statements.append(Statement("storage", Token('SRGB_ALPHA'), *material_atlas.size))
 144                         base_color_res.statements.append(Statement("raw_data", material_atlas.base_color_data))
 145
 146                         resources[base_color_name] = base_color_res
 147
 148                 sampler_name = "nearest.samp"
 149                 sampler_res = resources.get(sampler_name)
 150                 if not sampler_res:
 151                         sampler_res = Resource(sampler_name, "sampler")
 152
 153                         sampler_res.statements.append(Statement("filter", Token('NEAREST')))
 154
 155                         resources[sampler_name] = sampler_res
 156
 157                 mat_name = material_atlas.name+".mat"
 158                 if mat_name not in resources:
 159                         mat_res = Resource(mat_name, "material")
 160                         mat_res.statements.append(Statement("type", Token('pbr')))
 161                         mat_res.statements.append(mat_res.create_reference_statement("base_color_map", base_color_res))
 162                         mat_res.statements.append(mat_res.create_reference_statement("sampler", sampler_res))
 163
 164                         resources[mat_name] = mat_res
 165
 166         def export_technique(self, material_atlas, resources):
 167                 return create_technique_resource(material_atlas, resources)