3 def create_technique_resource(material, resources):
4 # This operates on a Blender material, not a custom object
5 from .datafile import Resource, Statement
6 tech_res = Resource(material.name+".tech", "technique")
8 mat_res = resources[material.name+".mat"]
10 st = Statement("pass", "")
12 st.sub.append(tech_res.create_embed_statement("material", mat_res))
14 if material.render_mode=='CUSTOM':
15 shader = material.shader
16 if shader.endswith(".glsl"):
18 st.sub.append(Statement("shader", shader))
21 ss = Statement("uniforms")
22 for u in material.uniforms:
23 ss.sub.append(Statement("uniform", u.name, *u.values[:u.size]))
26 if material.receive_shadows:
27 st.sub.append(Statement("receive_shadows", True))
28 if material.image_based_lighting:
29 st.sub.append(Statement("image_based_lighting", True))
31 tech_res.statements.append(st)
33 if material.shadow_method!='NONE':
34 st = Statement("pass", "shadow")
35 st.sub.append(Statement("shader", "_occluder.glsl.shader"))
36 tech_res.statements.append(st)
40 class MaterialExporter:
41 def create_texture_exporter(self):
42 from .export_texture import TextureExporter
43 texture_export = TextureExporter()
46 def export_technique_resources(self, material, resources):
47 from .export_texture import SamplerExporter
48 texture_export = self.create_texture_exporter()
49 sampler_export = SamplerExporter()
51 from .material import Material
52 material = Material(material)
54 for p in material.properties:
56 tex_name = p.texture.image.name+".tex2d"
57 if tex_name not in resources:
58 resources[tex_name] = texture_export.export_texture(p.texture, p.tex_usage, invert_green=p.invert_green)
60 samp_name = sampler_export.get_sampler_name(p.texture)
61 if samp_name not in resources:
62 resources[samp_name] = sampler_export.export_sampler(p.texture)
64 mat_name = material.name+".mat"
65 if mat_name not in resources:
67 resources[mat_name] = self.export_material(material, resources)
69 resources[mat_name] = None
71 def export_technique(self, material, resources):
72 return create_technique_resource(material, resources)
74 def export_material(self, material, resources):
75 from .datafile import Resource, Statement, Token
76 mat_res = Resource(material.name+".mat", "material")
78 if material.type!="pbr" and material.type!="unlit":
79 raise Exception("Can't export material {} of unknown type {}".format(material.name, material.type))
81 mat_res.statements.append(Statement("type", Token(material.type)));
82 for p in material.properties:
83 st = self.create_property_statement(mat_res, p, resources)
85 mat_res.statements.append(st)
86 textures = [p.texture for p in material.properties if p.texture]
87 if textures and not all(t.default_filter for t in textures):
88 from .export_texture import SamplerExporter
89 sampler_tex = next(t for t in textures if not t.default_filter)
90 sampler_export = SamplerExporter()
91 mat_res.statements.append(mat_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(sampler_tex)]))
95 def create_property_statement(self, mat_res, prop, resources):
96 from .datafile import Statement
98 tex_res = resources[prop.texture.image.name+".tex2d"]
99 from .util import basename
100 fn = basename(prop.texture.image.filepath)
101 if prop.texture.default_filter and fn:
102 return Statement(prop.tex_keyword, fn)
104 return mat_res.create_reference_statement(prop.tex_keyword, tex_res)
105 elif not prop.keyword:
107 elif type(prop.value)==tuple:
108 return Statement(prop.keyword, *prop.value)
110 return Statement(prop.keyword, prop.value)
113 class MaterialAtlasExporter:
117 def export_technique_resources(self, material_atlas, resources):
118 from .datafile import Resource, Statement, Token
119 base_color_name = material_atlas.name+"_base_color.tex2d"
120 base_color_res = resources.get(base_color_name)
121 if not base_color_res:
122 base_color_res = Resource(base_color_name, "texture2d")
124 base_color_res.statements.append(Statement("storage", Token('SRGB_ALPHA'), *material_atlas.size))
125 base_color_res.statements.append(Statement("raw_data", material_atlas.base_color_data))
127 resources[base_color_name] = base_color_res
129 sampler_name = "nearest.samp"
130 sampler_res = resources.get(sampler_name)
132 sampler_res = Resource(sampler_name, "sampler")
134 sampler_res.statements.append(Statement("filter", Token('NEAREST')))
136 resources[sampler_name] = sampler_res
138 mat_name = material_atlas.name+".mat"
139 if mat_name not in resources:
140 mat_res = Resource(mat_name, "material")
141 mat_res.statements.append(Statement("type", Token('pbr')))
142 mat_res.statements.append(mat_res.create_reference_statement("base_color_map", base_color_res))
143 mat_res.statements.append(mat_res.create_reference_statement("sampler", sampler_res))
145 resources[mat_name] = mat_res
147 def export_technique(self, material_atlas, resources):
148 return create_technique_resource(material_atlas, resources)