Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_HINT_GPU_DRIVER - A variable that specifies a GPU backend to use.
SYNOPSIS
#include <SDL3/SDL_hints.h>
#define SDL_HINT_GPU_DRIVER "SDL_GPU_DRIVER"
DESCRIPTION
By default, SDL will try all available GPU backends in a reasonable order until it finds one that can
work, but this hint allows the app or user to force a specific target, such as "direct3d12" if, say, your
hardware supports Vulkan but you want to try using D3D12 instead.
This hint should be set before any GPU functions are called.
AVAILABILITY
This hint is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.20 SDL_HINT_GPU_DRIVER(3)