# SDL_SoftStretchLinear Perform bilinear scaling between two surfaces of the same format, 32BPP. ## Header File Defined in [SDL_surface.h](https://github.com/libsdl-org/SDL/blob/SDL2/include/SDL_surface.h) ## Syntax ```c int SDL_SoftStretchLinear(SDL_Surface * src, const SDL_Rect * srcrect, SDL_Surface * dst, const SDL_Rect * dstrect); ``` ## Function Parameters | | | | | ---------------------------- | ----------- | ------------------------------------ | | [SDL_Surface](SDL_Surface) * | **src** | the surface to be copied from. | | const [SDL_Rect](SDL_Rect) * | **srcrect** | the rectangle to be copied. | | [SDL_Surface](SDL_Surface) * | **dst** | the surface that is the blit target. | | const [SDL_Rect](SDL_Rect) * | **dstrect** | the rectangle that is copied into. | ## Return Value (int) Returns 0 on success or a negative error code on failure; call [SDL_GetError](SDL_GetError)() for more information. ## Version This function is available since SDL 2.0.16. ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategorySurface](CategorySurface)