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