blender/io_mspgl/export_material.py

   1 def create_technique_resource(material, resources):
   2         from .datafile import Resource, Statement, Token
   3         tech_res = Resource(material.name+".tech", "technique")
   4
   5         mat_res = resources[material.name+".mat"]
   6
   7         blend_st = None
   8         if material.blend_type=='ALPHA':
   9                 blend_st = Statement("blend", Token("SRC_ALPHA"), Token("ONE_MINUS_SRC_ALPHA"))
  10         elif material.blend_type=='ADDITIVE':
  11                 blend_st = Statement("blend", Token("ONE"), Token("ONE"))
  12         elif material.blend_type=='ADDITIVE_ALPHA':
  13                 blend_st = Statement("blend", Token("SRC_ALPHA"), Token("ONE"))
  14
  15         if material.render_mode=='CUSTOM':
  16                 for m in material.render_methods:
  17                         st = Statement("method", m.tag)
  18                         if mat_res and m.use_material:
  19                                 st.sub.append(tech_res.create_reference_statement("material", mat_res))
  20
  21                         if m.tag=="blended" and blend_st:
  22                                 st.sub.append(blend_st)
  23
  24                         shader = m.shader
  25                         if shader.endswith(".glsl"):
  26                                 shader += ".shader"
  27                         st.sub.append(Statement("shader", shader))
  28
  29                         if material.uniforms:
  30                                 ss = Statement("uniforms")
  31                                 for u in material.uniforms:
  32                                         ss.sub.append(Statement("uniform", u.name, *u.values[:u.size]))
  33                                 st.sub.append(ss)
  34
  35                         tech_res.statements.append(st)
  36         else:
  37                 base_method = "blended" if material.blend_type!='NONE' else ""
  38                 st = Statement("method", base_method)
  39                 if mat_res:
  40                         st.sub.append(tech_res.create_embed_statement("material", mat_res))
  41
  42                 if blend_st:
  43                         st.sub.append(blend_st)
  44                 if material.receive_shadows:
  45                         st.sub.append(Statement("receive_shadows", True))
  46                 if material.image_based_lighting:
  47                         st.sub.append(Statement("image_based_lighting", True))
  48
  49                 tech_res.statements.append(st)
  50
  51                 if material.cast_shadows:
  52                         st = Statement("method", "shadow")
  53                         st.sub.append(Statement("shader", "occluder.glsl.shader"))
  54                         tech_res.statements.append(st)
  55
  56                         st = Statement("method", "shadow_thsm")
  57                         st.sub.append(Statement("shader", "occluder_thsm.glsl.shader"))
  58                         tech_res.statements.append(st)
  59
  60         return tech_res
  61
  62 class MaterialExporter:
  63         def export_technique_resources(self, ctx, material, resources):
  64                 from .export_texture import SamplerExporter, TextureExporter
  65                 texture_export = TextureExporter()
  66                 sampler_export = SamplerExporter()
  67
  68                 from .material import Material
  69                 if type(material)!=Material:
  70                         material = Material(material)
  71
  72                 textured_props = [p for p in material.properties if p.texture]
  73
  74                 ctx.set_slices(len(textured_props)+1)
  75                 for p in textured_props:
  76                         ctx.next_slice(p.texture.image)
  77
  78                         tex_name = texture_export.get_texture_name(p.texture, p.tex_channels)
  79                         if tex_name not in resources:
  80                                 resources[tex_name] = texture_export.export_texture(p.texture, p.tex_channels)
  81
  82                         samp_name = sampler_export.get_sampler_name(p.texture)
  83                         if samp_name not in resources:
  84                                 resources[samp_name] = sampler_export.export_sampler(p.texture)
  85
  86                 ctx.next_slice(material)
  87                 mat_name = material.name+".mat"
  88                 if mat_name not in resources:
  89                         if material.type:
  90                                 resources[mat_name] = self.export_material(material, resources)
  91                         else:
  92                                 resources[mat_name] = None
  93
  94         def export_technique(self, material, resources):
  95                 from .material import Material
  96                 if type(material)!=Material:
  97                         material = Material(material)
  98
  99                 return create_technique_resource(material, resources)
 100
 101         def export_material(self, material, resources):
 102                 from .datafile import Resource, Statement, Token
 103                 mat_res = Resource(material.name+".mat", "material")
 104
 105                 if material.type!="pbr" and material.type!="unlit":
 106                         raise Exception("Can't export material {} of unknown type {}".format(material.name, material.type))
 107
 108                 mat_res.statements.append(Statement("type", Token(material.type)));
 109                 for p in material.properties:
 110                         st = self.create_property_statement(mat_res, p, resources)
 111                         if st:
 112                                 mat_res.statements.append(st)
 113                 textures = [p.texture for p in material.properties if p.texture]
 114                 if textures:
 115                         from .export_texture import SamplerExporter
 116                         sampler_export = SamplerExporter()
 117                         mat_res.statements.append(mat_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(textures[0])]))
 118
 119                 return mat_res
 120
 121         def create_property_statement(self, mat_res, prop, resources):
 122                 from .datafile import Statement
 123                 if prop.texture:
 124                         from .export_texture import TextureExporter
 125                         texture_export = TextureExporter()
 126                         tex_res = resources[texture_export.get_texture_name(prop.texture, prop.tex_channels)]
 127                         return mat_res.create_reference_statement(prop.tex_keyword, tex_res)
 128                 elif not prop.keyword:
 129                         return
 130                 elif type(prop.value)==tuple:
 131                         return Statement(prop.keyword, *prop.value)
 132                 else:
 133                         return Statement(prop.keyword, prop.value)
 134
 135
 136 class MaterialAtlasExporter:
 137         def __init__(self):
 138                 pass
 139
 140         def export_technique_resources(self, material_atlas, resources):
 141                 from .datafile import Resource, Statement, Token
 142                 base_color_name = material_atlas.name+"_base_color.tex"
 143                 base_color_res = resources.get(base_color_name)
 144                 if not base_color_res:
 145                         base_color_res = Resource(base_color_name, "texture")
 146
 147                         base_color_res.statements.append(Statement("type", Token("\\2d")))
 148                         base_color_res.statements.append(Statement("storage", Token('SRGB_ALPHA'), *material_atlas.size))
 149                         base_color_res.statements.append(Statement("raw_data", material_atlas.base_color_data))
 150
 151                         resources[base_color_name] = base_color_res
 152
 153                 sampler_name = "nearest.samp"
 154                 sampler_res = resources.get(sampler_name)
 155                 if not sampler_res:
 156                         sampler_res = Resource(sampler_name, "sampler")
 157
 158                         sampler_res.statements.append(Statement("filter", Token('NEAREST')))
 159
 160                         resources[sampler_name] = sampler_res
 161
 162                 mat_name = material_atlas.name+".mat"
 163                 if mat_name not in resources:
 164                         mat_res = Resource(mat_name, "material")
 165                         mat_res.statements.append(Statement("type", Token('pbr')))
 166                         mat_res.statements.append(mat_res.create_reference_statement("base_color_map", base_color_res))
 167                         mat_res.statements.append(mat_res.create_reference_statement("sampler", sampler_res))
 168
 169                         resources[mat_name] = mat_res
 170
 171         def export_technique(self, material_atlas, resources):
 172                 return create_technique_resource(material_atlas, resources)