1 class MaterialExporter:
2 def export_technique_resources(self, ctx, material, resources):
3 from .export_texture import SamplerExporter, TextureExporter
4 texture_export = TextureExporter()
5 sampler_export = SamplerExporter()
7 from .material import Material
8 if type(material)!=Material:
9 material = Material(material)
11 textured_props = [p for p in material.properties if p.texture]
13 ctx.set_slices(len(textured_props)+1)
14 for p in textured_props:
15 ctx.next_slice(p.texture.image)
17 tex_name = texture_export.get_texture_name(p.texture, p.tex_channels)
18 if tex_name not in resources:
19 resources[tex_name] = texture_export.export_texture(p.texture, p.tex_channels)
21 samp_name = sampler_export.get_sampler_name(p.texture)
22 if samp_name not in resources:
23 resources[samp_name] = sampler_export.export_sampler(p.texture)
25 ctx.next_slice(material)
26 mat_name = material.name+".mat"
27 if mat_name not in resources:
29 resources[mat_name] = self.export_material(material, resources)
31 resources[mat_name] = None
33 if material.cast_shadows and material.alpha_cutoff>0.0:
34 for detail in ("", "_thsm"):
35 shader_name = "occluder{}_masked.shader".format(detail)
36 if shader_name not in resources:
37 resources[shader_name] = self.export_shader(shader_name, "occluder{}.glsl".format(detail), {"use_alpha_cutoff":True}, resources)
39 def export_technique(self, material, resources):
40 from .material import Material
41 if type(material)!=Material:
42 material = Material(material)
44 from .datafile import Resource, Statement, Token
45 tech_res = Resource(material.name+".tech", "technique")
47 mat_res = resources[material.name+".mat"]
50 if material.blend_type=='ALPHA':
51 blend_st = Statement("blend", Token("SRC_ALPHA"), Token("ONE_MINUS_SRC_ALPHA"))
52 elif material.blend_type=='ADDITIVE':
53 blend_st = Statement("blend", Token("ONE"), Token("ONE"))
54 elif material.blend_type=='ADDITIVE_ALPHA':
55 blend_st = Statement("blend", Token("SRC_ALPHA"), Token("ONE"))
57 if material.render_mode=='CUSTOM':
58 for m in material.render_methods:
59 st = Statement("method", m.tag)
60 if mat_res and m.use_material:
61 st.sub.append(tech_res.create_reference_statement("material", mat_res))
63 if m.tag=="blended" and blend_st:
64 st.sub.append(blend_st)
67 if shader.endswith(".glsl"):
69 st.sub.append(Statement("shader", shader))
72 ss = Statement("uniforms")
73 for u in material.uniforms:
74 ss.sub.append(Statement("uniform", u.name, *u.values[:u.size]))
77 if material.face_cull=='BACK':
78 st.sub.append(Statement("face_cull", Token("CULL_BACK")))
80 tech_res.statements.append(st)
82 base_method = "blended" if material.blend_type!='NONE' else ""
83 st = Statement("method", base_method)
85 st.sub.append(tech_res.create_embed_statement("material", mat_res))
88 st.sub.append(blend_st)
89 if material.receive_shadows:
90 st.sub.append(Statement("receive_shadows", True))
91 if material.image_based_lighting:
92 st.sub.append(Statement("image_based_lighting", True))
93 if material.face_cull=='BACK':
94 st.sub.append(Statement("face_cull", Token("CULL_BACK")))
96 tech_res.statements.append(st)
98 if material.cast_shadows:
99 tech_res.statements.append(self.create_shadow_method(tech_res, material, resources, ""));
100 tech_res.statements.append(self.create_shadow_method(tech_res, material, resources, "_thsm"));
104 def create_shadow_method(self, tech_res, material, resources, detail):
105 from .datafile import Statement, Token
107 color_prop = next((p for p in material.properties if p.keyword and "color" in p.keyword), None)
109 st = Statement("method", "shadow"+detail)
110 if material.alpha_cutoff>0.0 and color_prop and 'A' in color_prop.tex_channels:
111 st.sub.append(tech_res.create_reference_statement("shader", resources["occluder{}_masked.shader".format(detail)]))
112 ss = Statement("texture", "alpha_map")
114 from .export_texture import TextureExporter
115 from .export_texture import SamplerExporter
116 texture_export = TextureExporter()
117 sampler_export = SamplerExporter()
119 tex_res = resources[texture_export.get_texture_name(color_prop.texture, color_prop.tex_channels)]
120 ss.sub.append(tech_res.create_reference_statement("texture", tex_res))
121 ss.sub.append(tech_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(color_prop.texture)]))
124 ss = Statement("uniforms")
125 ss.sub.append(Statement("uniform", "alpha_cutoff", material.alpha_cutoff))
128 st.sub.append(Statement("shader", "occluder{}.glsl.shader".format(detail)))
130 if material.face_cull=='BACK':
131 st.sub.append(Statement("face_cull", Token("CULL_BACK")))
135 def export_material(self, material, resources):
136 from .datafile import Resource, Statement, Token
137 mat_res = Resource(material.name+".mat", "material")
139 if material.type!="pbr" and material.type!="unlit":
140 raise Exception("Can't export material {} of unknown type {}".format(material.name, material.type))
142 mat_res.statements.append(Statement("type", Token(material.type)));
143 for p in material.properties:
144 st = self.create_property_statement(mat_res, p, resources)
146 mat_res.statements.append(st)
147 textures = [p.texture for p in material.properties if p.texture]
149 from .export_texture import SamplerExporter
150 sampler_export = SamplerExporter()
151 mat_res.statements.append(mat_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(textures[0])]))
152 if material.alpha_cutoff>0.0:
153 mat_res.statements.append(Statement("alpha_cutoff", material.alpha_cutoff))
157 def create_property_statement(self, mat_res, prop, resources):
158 from .datafile import Statement
160 from .export_texture import TextureExporter
161 texture_export = TextureExporter()
162 tex_res = resources[texture_export.get_texture_name(prop.texture, prop.tex_channels)]
163 return mat_res.create_reference_statement(prop.tex_keyword, tex_res)
164 elif not prop.keyword:
166 elif type(prop.value)==tuple:
167 return Statement(prop.keyword, *prop.value)
169 return Statement(prop.keyword, prop.value)
171 def export_shader(self, name, module, spec_values, resources):
172 from .datafile import Resource, Statement
173 shader_res = Resource(name, "shader")
175 st = Statement("module", module)
176 for k, v in spec_values.items():
177 st.sub.append(Statement("specialize", k, v))
178 shader_res.statements.append(st)