+void RenderPass::maybe_create_material_shader(DataFile::Collection *coll)
+{
+ if(shprog && !shprog_from_material)
+ return;
+
+ if(coll)
+ {
+ shprog = material->create_compatible_shader(*coll);
+ shprog.keep();
+ }
+ else
+ shprog = material->create_compatible_shader();
+
+ if(shdata)
+ shdata = new ProgramData(*shdata, shprog.get());
+
+ shprog_from_material = true;
+}
+