unsigned samples = min(tmpl.get_maximum_multisample(), Renderbuffer::get_max_samples());
if(samples<tmpl.get_required_multisample())
throw invalid_operation("PipelineBuilder::build");
unsigned samples = min(tmpl.get_maximum_multisample(), Renderbuffer::get_max_samples());
if(samples<tmpl.get_required_multisample())
throw invalid_operation("PipelineBuilder::build");