blender/io_mspgl/export_material.py

   1 def create_shadow_method(tech_res, material, resources, detail):
   2         from .datafile import Statement, Token
   3
   4         color_prop = next((p for p in material.properties if p.keyword and "color" in p.keyword), None)
   5
   6         st = Statement("method", "shadow"+detail)
   7         if material.alpha_cutoff>0.0 and color_prop and 'A' in color_prop.tex_channels:
   8                 st.sub.append(tech_res.create_reference_statement("shader", resources["occluder{}_masked.shader".format(detail)]))
   9                 ss = Statement("texture", "alpha_map")
  10
  11                 from .export_texture import TextureExporter
  12                 from .export_texture import SamplerExporter
  13                 texture_export = TextureExporter()
  14                 sampler_export = SamplerExporter()
  15
  16                 tex_res = resources[texture_export.get_texture_name(color_prop.texture, color_prop.tex_channels)]
  17                 ss.sub.append(tech_res.create_reference_statement("texture", tex_res))
  18                 ss.sub.append(tech_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(color_prop.texture)]))
  19                 st.sub.append(ss)
  20
  21                 ss = Statement("uniforms")
  22                 ss.sub.append(Statement("uniform", "alpha_cutoff", material.alpha_cutoff))
  23                 st.sub.append(ss)
  24         else:
  25                 st.sub.append(Statement("shader", "occluder{}.glsl.shader".format(detail)))
  26
  27         if material.face_cull=='BACK':
  28                 st.sub.append(Statement("face_cull", Token("CULL_BACK")))
  29
  30         return st;
  31
  32 def create_technique_resource(material, resources):
  33         from .datafile import Resource, Statement, Token
  34         tech_res = Resource(material.name+".tech", "technique")
  35
  36         mat_res = resources[material.name+".mat"]
  37
  38         blend_st = None
  39         if material.blend_type=='ALPHA':
  40                 blend_st = Statement("blend", Token("SRC_ALPHA"), Token("ONE_MINUS_SRC_ALPHA"))
  41         elif material.blend_type=='ADDITIVE':
  42                 blend_st = Statement("blend", Token("ONE"), Token("ONE"))
  43         elif material.blend_type=='ADDITIVE_ALPHA':
  44                 blend_st = Statement("blend", Token("SRC_ALPHA"), Token("ONE"))
  45
  46         if material.render_mode=='CUSTOM':
  47                 for m in material.render_methods:
  48                         st = Statement("method", m.tag)
  49                         if mat_res and m.use_material:
  50                                 st.sub.append(tech_res.create_reference_statement("material", mat_res))
  51
  52                         if m.tag=="blended" and blend_st:
  53                                 st.sub.append(blend_st)
  54
  55                         shader = m.shader
  56                         if shader.endswith(".glsl"):
  57                                 shader += ".shader"
  58                         st.sub.append(Statement("shader", shader))
  59
  60                         if material.uniforms:
  61                                 ss = Statement("uniforms")
  62                                 for u in material.uniforms:
  63                                         ss.sub.append(Statement("uniform", u.name, *u.values[:u.size]))
  64                                 st.sub.append(ss)
  65
  66                         if material.face_cull=='BACK':
  67                                 st.sub.append(Statement("face_cull", Token("CULL_BACK")))
  68
  69                         tech_res.statements.append(st)
  70         else:
  71                 base_method = "blended" if material.blend_type!='NONE' else ""
  72                 st = Statement("method", base_method)
  73                 if mat_res:
  74                         st.sub.append(tech_res.create_embed_statement("material", mat_res))
  75
  76                 if blend_st:
  77                         st.sub.append(blend_st)
  78                 if material.receive_shadows:
  79                         st.sub.append(Statement("receive_shadows", True))
  80                 if material.image_based_lighting:
  81                         st.sub.append(Statement("image_based_lighting", True))
  82                 if material.face_cull=='BACK':
  83                         st.sub.append(Statement("face_cull", Token("CULL_BACK")))
  84
  85                 tech_res.statements.append(st)
  86
  87                 if material.cast_shadows:
  88                         tech_res.statements.append(create_shadow_method(tech_res, material, resources, ""));
  89                         tech_res.statements.append(create_shadow_method(tech_res, material, resources, "_thsm"));
  90
  91         return tech_res
  92
  93 class MaterialExporter:
  94         def export_technique_resources(self, ctx, material, resources):
  95                 from .export_texture import SamplerExporter, TextureExporter
  96                 texture_export = TextureExporter()
  97                 sampler_export = SamplerExporter()
  98
  99                 from .material import Material
 100                 if type(material)!=Material:
 101                         material = Material(material)
 102
 103                 textured_props = [p for p in material.properties if p.texture]
 104
 105                 ctx.set_slices(len(textured_props)+1)
 106                 for p in textured_props:
 107                         ctx.next_slice(p.texture.image)
 108
 109                         tex_name = texture_export.get_texture_name(p.texture, p.tex_channels)
 110                         if tex_name not in resources:
 111                                 resources[tex_name] = texture_export.export_texture(p.texture, p.tex_channels)
 112
 113                         samp_name = sampler_export.get_sampler_name(p.texture)
 114                         if samp_name not in resources:
 115                                 resources[samp_name] = sampler_export.export_sampler(p.texture)
 116
 117                 ctx.next_slice(material)
 118                 mat_name = material.name+".mat"
 119                 if mat_name not in resources:
 120                         if material.type:
 121                                 resources[mat_name] = self.export_material(material, resources)
 122                         else:
 123                                 resources[mat_name] = None
 124
 125                 if material.cast_shadows and material.alpha_cutoff>0.0:
 126                         for detail in ("", "_thsm"):
 127                                 shader_name = "occluder{}_masked.shader".format(detail)
 128                                 if shader_name not in resources:
 129                                         resources[shader_name] = self.export_shader(shader_name, "occluder{}.glsl".format(detail), {"use_alpha_cutoff":True}, resources)
 130
 131         def export_technique(self, material, resources):
 132                 from .material import Material
 133                 if type(material)!=Material:
 134                         material = Material(material)
 135
 136                 return create_technique_resource(material, resources)
 137
 138         def export_material(self, material, resources):
 139                 from .datafile import Resource, Statement, Token
 140                 mat_res = Resource(material.name+".mat", "material")
 141
 142                 if material.type!="pbr" and material.type!="unlit":
 143                         raise Exception("Can't export material {} of unknown type {}".format(material.name, material.type))
 144
 145                 mat_res.statements.append(Statement("type", Token(material.type)));
 146                 for p in material.properties:
 147                         st = self.create_property_statement(mat_res, p, resources)
 148                         if st:
 149                                 mat_res.statements.append(st)
 150                 textures = [p.texture for p in material.properties if p.texture]
 151                 if textures:
 152                         from .export_texture import SamplerExporter
 153                         sampler_export = SamplerExporter()
 154                         mat_res.statements.append(mat_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(textures[0])]))
 155                 if material.alpha_cutoff>0.0:
 156                         mat_res.statements.append(Statement("alpha_cutoff", material.alpha_cutoff))
 157
 158                 return mat_res
 159
 160         def create_property_statement(self, mat_res, prop, resources):
 161                 from .datafile import Statement
 162                 if prop.texture:
 163                         from .export_texture import TextureExporter
 164                         texture_export = TextureExporter()
 165                         tex_res = resources[texture_export.get_texture_name(prop.texture, prop.tex_channels)]
 166                         return mat_res.create_reference_statement(prop.tex_keyword, tex_res)
 167                 elif not prop.keyword:
 168                         return
 169                 elif type(prop.value)==tuple:
 170                         return Statement(prop.keyword, *prop.value)
 171                 else:
 172                         return Statement(prop.keyword, prop.value)
 173
 174         def export_shader(self, name, module, spec_values, resources):
 175                 from .datafile import Resource, Statement
 176                 shader_res = Resource(name, "shader")
 177
 178                 st = Statement("module", module)
 179                 for k, v in spec_values.items():
 180                         st.sub.append(Statement("specialize", k, v))
 181                 shader_res.statements.append(st)
 182
 183                 return shader_res
 184
 185
 186 class MaterialAtlasExporter:
 187         def __init__(self):
 188                 pass
 189
 190         def export_technique_resources(self, material_atlas, resources):
 191                 from .datafile import Resource, Statement, Token
 192                 base_color_name = material_atlas.name+"_base_color.tex"
 193                 base_color_res = resources.get(base_color_name)
 194                 if not base_color_res:
 195                         base_color_res = Resource(base_color_name, "texture")
 196
 197                         base_color_res.statements.append(Statement("type", Token("\\2d")))
 198                         base_color_res.statements.append(Statement("storage", Token('SRGB_ALPHA'), *material_atlas.size))
 199                         base_color_res.statements.append(Statement("raw_data", material_atlas.base_color_data))
 200
 201                         resources[base_color_name] = base_color_res
 202
 203                 sampler_name = "nearest.samp"
 204                 sampler_res = resources.get(sampler_name)
 205                 if not sampler_res:
 206                         sampler_res = Resource(sampler_name, "sampler")
 207
 208                         sampler_res.statements.append(Statement("filter", Token('NEAREST')))
 209
 210                         resources[sampler_name] = sampler_res
 211
 212                 mat_name = material_atlas.name+".mat"
 213                 if mat_name not in resources:
 214                         mat_res = Resource(mat_name, "material")
 215                         mat_res.statements.append(Statement("type", Token('pbr')))
 216                         mat_res.statements.append(mat_res.create_reference_statement("base_color_map", base_color_res))
 217                         mat_res.statements.append(mat_res.create_reference_statement("sampler", sampler_res))
 218
 219                         resources[mat_name] = mat_res
 220
 221         def export_technique(self, material_atlas, resources):
 222                 return create_technique_resource(material_atlas, resources)