(This is the documentation for SDL3, which is under heavy development and the API is changing! SDL2 is the current stable version!)

SDL_HINT_VIDEO_DOUBLE_BUFFER

Tell the video driver that we only want a double buffer.

Header File

Defined in <SDL3/SDL_hints.h>

Syntax

#define SDL_HINT_VIDEO_DOUBLE_BUFFER      "SDL_VIDEO_DOUBLE_BUFFER"

Remarks

By default, most lowlevel 2D APIs will use a triple buffer scheme that wastes no CPU time on waiting for vsync after issuing a flip, but introduces a frame of latency. On the other hand, using a double buffer scheme instead is recommended for cases where low latency is an important factor because we save a whole frame of latency.

We do so by waiting for vsync immediately after issuing a flip, usually just after eglSwapBuffers call in the backend's *_SwapWindow function.

This hint is currently supported on the following drivers:

• Raspberry Pi (raspberrypi)

This hint should be set before SDL is initialized.

Version

This hint is available since SDL 3.0.0.

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CategoryAPI, CategoryAPIMacro

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