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A variable controlling whether the Direct3D device is initialized for thread-safe operations.
Defined in [SDL_hints.h](https://github.com/libsdl-org/SDL/blob/SDL2/include/SDL_hints.h), but apps should _only_ `#include "SDL.h"`!
#define SDL_HINT_RENDER_DIRECT3D_THREADSAFE "SDL_RENDER_DIRECT3D_THREADSAFE"
This variable can be set to the following values: "0" - Thread-safety is not enabled (faster) "1" - Thread-safety is enabled
By default the Direct3D device is created with thread-safety disabled.
By default the Direct3D device is created with thread-safety disabled.
CategoryAPI, CategoryAPIMacro, CategoryDefine, CategoryHints, CategoryDraft