+def create_shadow_method(tech_res, material, resources, detail):
+ from .datafile import Statement, Token
+
+ color_prop = next((p for p in material.properties if p.keyword and "color" in p.keyword), None)
+
+ st = Statement("method", "shadow"+detail)
+ if material.alpha_cutoff>0.0 and color_prop and 'A' in color_prop.tex_channels:
+ st.sub.append(tech_res.create_reference_statement("shader", resources["occluder{}_masked.shader".format(detail)]))
+ ss = Statement("texture", "alpha_map")
+
+ from .export_texture import TextureExporter
+ from .export_texture import SamplerExporter
+ texture_export = TextureExporter()
+ sampler_export = SamplerExporter()
+
+ tex_res = resources[texture_export.get_texture_name(color_prop.texture, color_prop.tex_channels)]
+ ss.sub.append(tech_res.create_reference_statement("texture", tex_res))
+ ss.sub.append(tech_res.create_reference_statement("sampler", resources[sampler_export.get_sampler_name(color_prop.texture)]))
+ st.sub.append(ss)
+
+ ss = Statement("uniforms")
+ ss.sub.append(Statement("uniform", "alpha_cutoff", material.alpha_cutoff))
+ st.sub.append(ss)
+ else:
+ st.sub.append(Statement("shader", "occluder{}.glsl.shader".format(detail)))
+
+ if material.face_cull=='BACK':
+ st.sub.append(Statement("face_cull", Token("CULL_BACK")))
+
+ return st;