(This is the legacy documentation for stable SDL2, the current stable version; SDL3 is the current development version.)

SDL_HINT_KMSDRM_DEVICE_INDEX

A variable that decides what KMSDRM device to use.

Header File

Defined in SDL_hints.h

Syntax

#define SDL_HINT_KMSDRM_DEVICE_INDEX "SDL_KMSDRM_DEVICE_INDEX"

Remarks

Internally, SDL might open something like "/dev/dri/cardNN" to access KMSDRM functionality, where "NN" is a device index number.

SDL makes a guess at the best index to use (usually zero), but the app or user can set this hint to a number between 0 and 99 to force selection.

This hint is available since SDL 2.24.0.

CategoryAPI, CategoryAPIMacro, CategoryHints