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

NAME
SDL_GetRenderMetalLayer - Get the CAMetalLayer associated with the given Metal renderer.
SYNOPSIS
#include <SDL3/SDL_render.h>
void * SDL_GetRenderMetalLayer(SDL_Renderer *renderer);
DESCRIPTION
This function returns void *, so SDL doesn't have to include Metal's headers, but it can be safely cast
to a CAMetalLayer *.
FUNCTION PARAMETERS
renderer
the renderer to query.
RETURN VALUE
Returns a CAMetalLayer * on success, or NULL if the renderer isn't a Metal renderer.
THREAD SAFETY
This function should only be called on the main thread.
AVAILABILITY
This function is available since SDL 3.2.0.
SEE ALSO
SDL_GetRenderMetalCommandEncoder(3)
Simple Directmedia Layer SDL 3.2.20 SDL_GetRenderMetalLayer(3)