###### (This is the documentation for SDL3, which is the current stable version. [SDL2](https://wiki.libsdl.org/SDL2/) was the previous version!)
# SDL_SetRenderScale

Set the drawing scale for rendering on the current target.

## Header File

Defined in [<SDL3/SDL_render.h>](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_render.h)

## Syntax

```c
bool SDL_SetRenderScale(SDL_Renderer *renderer, float scaleX, float scaleY);
```

## Function Parameters

|                                |              |                                |
| ------------------------------ | ------------ | ------------------------------ |
| [SDL_Renderer](SDL_Renderer) * | **renderer** | the rendering context.         |
| float                          | **scaleX**   | the horizontal scaling factor. |
| float                          | **scaleY**   | the vertical scaling factor.   |

## Return Value

(bool) Returns true on success or false on failure; call
[SDL_GetError](SDL_GetError)() for more information.

## Remarks

The drawing coordinates are scaled by the x/y scaling factors before they
are used by the renderer. This allows resolution independent drawing with a
single coordinate system.

If this results in scaling or subpixel drawing by the rendering backend, it
will be handled using the appropriate quality hints. For best results use
integer scaling factors.

## Thread Safety

You may only call this function from the main thread.

## Version

This function is available since SDL 3.1.3.

## See Also

- [SDL_GetRenderScale](SDL_GetRenderScale)

----
[CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryRender](CategoryRender)