Added SDL_SetSurfaceScaleMode() and SDL_GetSurfaceScaleMode() to control scale mode using SDL_BlitSurfaceScaled()

include/SDL3/SDL_render.h

@@ -95,16 +95,6 @@ typedef struct SDL_Vertex
     SDL_FPoint tex_coord;       /**< Normalized texture coordinates, if needed */
 } SDL_Vertex;
 
-/**
- * The scaling mode for a texture.
- */
-typedef enum
-{
-    SDL_SCALEMODE_NEAREST, /**< nearest pixel sampling */
-    SDL_SCALEMODE_LINEAR,  /**< linear filtering */
-    SDL_SCALEMODE_BEST     /**< anisotropic filtering */
-} SDL_ScaleMode;
-
 /**
  * The access pattern allowed for a texture.
  */