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 if material.render_mode=='CUSTOM':
36 shader = material.shadow_shader or material.shader
37 if shader.endswith(".glsl"):
39 st.sub.append(Statement("shader", shader))
41 st.sub.append(Statement("shader", "_occluder.glsl.shader"))
42 tech_res.statements.append(st)
46 class MaterialExporter:
47 def create_texture_exporter(self):
48 from .export_texture import TextureExporter
49 texture_export = TextureExporter()
52 def export_technique_resources(self, material, resources):
53 from .export_texture import SamplerExporter
54 texture_export = self.create_texture_exporter()
55 sampler_export = SamplerExporter()
57 from .material import Material
58 material = Material(material)
60 for p in material.properties:
62 tex_name = p.texture.image.name+".tex2d"
63 if tex_name not in resources:
64 resources[tex_name] = texture_export.export_texture(p.texture, p.tex_usage, invert_green=p.invert_green)
66 samp_name = sampler_export.get_sampler_name(p.texture)
67 if samp_name not in resources:
68 resources[samp_name] = sampler_export.export_sampler(p.texture)
70 mat_name = material.name+".mat"
71 if mat_name not in resources:
73 resources[mat_name] = self.export_material(material, resources)
75 resources[mat_name] = None
77 def export_technique(self, material, resources):
78 return create_technique_resource(material, resources)
80 def export_material(self, material, resources):
81 from .datafile import Resource, Statement, Token
82 mat_res = Resource(material.name+".mat", "material")
84 if material.type!="pbr" and material.type!="unlit":
85 raise Exception("Can't export material {} of unknown type {}".format(material.name, material.type))
87 mat_res.statements.append(Statement("type", Token(material.type)));
88 for p in material.properties:
89 st = self.create_property_statement(mat_res, p, resources)
91 mat_res.statements.append(st)
92 textures = [p.texture for p in material.properties if p.texture]
93 if textures and not all(t.default_filter for t in textures):
94 from .export_texture import SamplerExporter
95 sampler_tex = next(t for t in textures if not t.default_filter)
96 sampler_export = SamplerExporter()
97 mat_res.statements.append(mat_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(sampler_tex)]))
101 def create_property_statement(self, mat_res, prop, resources):
102 from .datafile import Statement
104 tex_res = resources[prop.texture.image.name+".tex2d"]
105 from .util import basename
106 fn = basename(prop.texture.image.filepath)
107 if prop.texture.default_filter and fn:
108 return Statement(prop.tex_keyword, fn)
110 return mat_res.create_reference_statement(prop.tex_keyword, tex_res)
111 elif not prop.keyword:
113 elif type(prop.value)==tuple:
114 return Statement(prop.keyword, *prop.value)
116 return Statement(prop.keyword, prop.value)
119 class MaterialAtlasExporter:
123 def export_technique_resources(self, material_atlas, resources):
124 from .datafile import Resource, Statement, Token
125 base_color_name = material_atlas.name+"_base_color.tex2d"
126 base_color_res = resources.get(base_color_name)
127 if not base_color_res:
128 base_color_res = Resource(base_color_name, "texture2d")
130 base_color_res.statements.append(Statement("storage", Token('SRGB_ALPHA'), *material_atlas.size))
131 base_color_res.statements.append(Statement("raw_data", material_atlas.base_color_data))
133 resources[base_color_name] = base_color_res
135 sampler_name = "nearest.samp"
136 sampler_res = resources.get(sampler_name)
138 sampler_res = Resource(sampler_name, "sampler")
140 sampler_res.statements.append(Statement("filter", Token('NEAREST')))
142 resources[sampler_name] = sampler_res
144 mat_name = material_atlas.name+".mat"
145 if mat_name not in resources:
146 mat_res = Resource(mat_name, "material")
147 mat_res.statements.append(Statement("type", Token('pbr')))
148 mat_res.statements.append(mat_res.create_reference_statement("base_color_map", base_color_res))
149 mat_res.statements.append(mat_res.create_reference_statement("sampler", sampler_res))
151 resources[mat_name] = mat_res
153 def export_technique(self, material_atlas, resources):
154 return create_technique_resource(material_atlas, resources)