NAME

SDL_GetDirect3D9AdapterIndex - Get the D3D9 adapter index that matches the specified display.

SYNOPSIS

#include <SDL3/SDL_system.h>

int SDL_GetDirect3D9AdapterIndex(SDL_DisplayID displayID);

DESCRIPTION

The returned adapter index can be passed to IDirect3D9::CreateDevice and controls on which monitor a full screen application will appear.

FUNCTION PARAMETERS

displayID

the instance of the display to query.

RETURN VALUE

Returns the D3D9 adapter index on success or -1 on failure; call SDL_GetError() for more information.

AVAILABILITY

This function is available since SDL 3.2.0.