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, ctx, 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                 textured_props = [p for p in material.properties if p.texture]
  75
  76                 ctx.set_slices(len(textured_props)+1)
  77                 for p in textured_props:
  78                         ctx.next_slice(p.texture.image)
  79
  80                         tex_name = p.texture.image.name+".tex2d"
  81                         if tex_name not in resources:
  82                                 resources[tex_name] = texture_export.export_texture(p.texture, p.tex_channels)
  83
  84                         samp_name = sampler_export.get_sampler_name(p.texture)
  85                         if samp_name not in resources:
  86                                 resources[samp_name] = sampler_export.export_sampler(p.texture)
  87
  88                 ctx.next_slice(material)
  89                 mat_name = material.name+".mat"
  90                 if mat_name not in resources:
  91                         if material.type:
  92                                 resources[mat_name] = self.export_material(material, resources)
  93                         else:
  94                                 resources[mat_name] = None
  95
  96         def export_technique(self, material, resources):
  97                 from .material import Material
  98                 if type(material)!=Material:
  99                         material = Material(material)
 100
 101                 return create_technique_resource(material, resources)
 102
 103         def export_material(self, material, resources):
 104                 from .datafile import Resource, Statement, Token
 105                 mat_res = Resource(material.name+".mat", "material")
 106
 107                 if material.type!="pbr" and material.type!="unlit":
 108                         raise Exception("Can't export material {} of unknown type {}".format(material.name, material.type))
 109
 110                 mat_res.statements.append(Statement("type", Token(material.type)));
 111                 for p in material.properties:
 112                         st = self.create_property_statement(mat_res, p, resources)
 113                         if st:
 114                                 mat_res.statements.append(st)
 115                 textures = [p.texture for p in material.properties if p.texture]
 116                 if textures:
 117                         from .export_texture import SamplerExporter
 118                         sampler_export = SamplerExporter()
 119                         mat_res.statements.append(mat_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(textures[0])]))
 120
 121                 return mat_res
 122
 123         def create_property_statement(self, mat_res, prop, resources):
 124                 from .datafile import Statement
 125                 if prop.texture:
 126                         tex_res = resources[prop.texture.image.name+".tex2d"]
 127                         from .util import basename
 128                         return mat_res.create_reference_statement(prop.tex_keyword, tex_res)
 129                 elif not prop.keyword:
 130                         return
 131                 elif type(prop.value)==tuple:
 132                         return Statement(prop.keyword, *prop.value)
 133                 else:
 134                         return Statement(prop.keyword, prop.value)
 135
 136
 137 class MaterialAtlasExporter:
 138         def __init__(self):
 139                 pass
 140
 141         def export_technique_resources(self, material_atlas, resources):
 142                 from .datafile import Resource, Statement, Token
 143                 base_color_name = material_atlas.name+"_base_color.tex2d"
 144                 base_color_res = resources.get(base_color_name)
 145                 if not base_color_res:
 146                         base_color_res = Resource(base_color_name, "texture2d")
 147
 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)