Return whether an explicit rectangle was set as the viewport.
Defined in <SDL3/SDL_render.h>
renderer | the rendering context |
Returns SDL_TRUE if the viewport was set to a specific rectangle, or SDL_FALSE if it was set to NULL (the entire target)
This is useful if you're saving and restoring the viewport and want to know whether you should restore a specific rectangle or NULL. Note that the viewport is always reset when changing rendering targets.
This function is available since SDL 3.0.0.