#gdi

Interoperability latency between GDI RECT and Direct2D D2D1_RECT_F under concurrent thread access

The goal is to understand whether the internal GDI batching subsystem introduces measurable latency when multiple threads simultaneously issue drawing calls that rely on the RECT structure’s exclusive‑bottom‑right convention, and how this latency interacts with Direct2D’s inclusive‑edge D2D1_RECT_F expectations in a mixed‑rendering scenario. Constraints incl