(This is the legacy documentation for SDL2, the previous stable version; SDL3 is the current stable version.)

SDL_Surface

A collection of pixels used in software blitting.

Header File

Defined in SDL_surface.h

Syntax

typedef struct SDL_Surface
{
    Uint32 flags;               /**< Read-only */
    SDL_PixelFormat *format;    /**< Read-only */
    int w, h;                   /**< Read-only */
    int pitch;                  /**< Read-only */
    void *pixels;               /**< Read-write */

    /** Application data associated with the surface */
    void *userdata;             /**< Read-write */

    /** information needed for surfaces requiring locks */
    int locked;                 /**< Read-only */

    /** list of BlitMap that hold a reference to this surface */
    void *list_blitmap;         /**< Private */

    /** clipping information */
    SDL_Rect clip_rect;         /**< Read-only */

    /** info for fast blit mapping to other surfaces */
    SDL_BlitMap *map;           /**< Private */

    /** Reference count -- used when freeing surface */
    int refcount;               /**< Read-mostly */
} SDL_Surface;

Remarks

This structure should be treated as read-only, except for pixels, which, if not NULL, contains the raw pixel data for the surface.

---

CategoryAPI, CategoryAPIStruct, CategorySurface

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