string base = format("light_sources[%d]", i);
shdata.uniform(base+".position", Vector4(0, 0, 1, 0));
shdata.uniform(base+".color", 0.0f, 0.0f, 0.0f);
string base = format("light_sources[%d]", i);
shdata.uniform(base+".position", Vector4(0, 0, 1, 0));
shdata.uniform(base+".color", 0.0f, 0.0f, 0.0f);