-void RenderPass::ensure_private_shader_data()
-{
- if(!shprog)
- throw invalid_operation("RenderPass::ensure_private_shader_data");
-
- if(!shdata)
- shdata = new ProgramData(shprog.get());
- else if(shdata.refcount()>1)
- shdata = new ProgramData(*shdata);
-}
-