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(This is the documentation for SDL3, which is under heavy development and the API is changing! SDL2 is the current stable version!)


Perform low-level surface scaled blitting only.

Header File

Defined in <SDL3/SDL_surface.h>


int SDL_BlitSurfaceUncheckedScaled(SDL_Surface *src, const SDL_Rect *srcrect, SDL_Surface *dst, const SDL_Rect *dstrect, SDL_ScaleMode scaleMode);

Function Parameters

SDL_Surface * src the SDL_Surface structure to be copied from.
const SDL_Rect * srcrect the SDL_Rect structure representing the rectangle to be copied, may not be NULL.
SDL_Surface * dst the SDL_Surface structure that is the blit target.
const SDL_Rect * dstrect the SDL_Rect structure representing the target rectangle in the destination surface, may not be NULL.
SDL_ScaleMode scaleMode scale algorithm to be used.

Return Value

(int) Returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.


This is a semi-private function and it performs low-level surface blitting, assuming the input rectangles have already been clipped.

Thread Safety

The same destination surface should not be used from two threads at once. It is safe to use the same source surface from multiple threads.


This function is available since SDL 3.0.0.

See Also

CategoryAPI, CategoryAPIFunction, CategorySurface

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