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+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+/**
+ * # CategorySurface
+ *
+ * SDL surfaces are buffers of pixels in system RAM. These are useful for
+ * passing around and manipulating images that are not stored in GPU memory.
+ *
+ * SDL_Surface makes serious efforts to manage images in various formats, and
+ * provides a reasonable toolbox for transforming the data, including copying
+ * between surfaces, filling rectangles in the image data, etc.
+ *
+ * There is also a simple .bmp loader, SDL_LoadBMP(). SDL itself does not
+ * provide loaders for various other file formats, but there are several
+ * excellent external libraries that do, including its own satellite library,
+ * SDL_image:
+ *
+ * https://github.com/libsdl-org/SDL_image
+ */
+
+#ifndef SDL_surface_h_
+#define SDL_surface_h_
+
+#include <SDL3/SDL_stdinc.h>
+#include <SDL3/SDL_error.h>
+#include <SDL3/SDL_blendmode.h>
+#include <SDL3/SDL_pixels.h>
+#include <SDL3/SDL_properties.h>
+#include <SDL3/SDL_rect.h>
+#include <SDL3/SDL_iostream.h>
+
+#include <SDL3/SDL_begin_code.h>
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * The flags on an SDL_Surface.
+ *
+ * These are generally considered read-only.
+ *
+ * \since This datatype is available since SDL 3.2.0.
+ */
+typedef Uint32 SDL_SurfaceFlags;
+
+#define SDL_SURFACE_PREALLOCATED    0x00000001u /**< Surface uses preallocated pixel memory */
+#define SDL_SURFACE_LOCK_NEEDED     0x00000002u /**< Surface needs to be locked to access pixels */
+#define SDL_SURFACE_LOCKED          0x00000004u /**< Surface is currently locked */
+#define SDL_SURFACE_SIMD_ALIGNED    0x00000008u /**< Surface uses pixel memory allocated with SDL_aligned_alloc() */
+
+/**
+ * Evaluates to true if the surface needs to be locked before access.
+ *
+ * \since This macro is available since SDL 3.2.0.
+ */
+#define SDL_MUSTLOCK(S) (((S)->flags & SDL_SURFACE_LOCK_NEEDED) == SDL_SURFACE_LOCK_NEEDED)
+
+/**
+ * The scaling mode.
+ *
+ * \since This enum is available since SDL 3.2.0.
+ */
+typedef enum SDL_ScaleMode
+{
+    SDL_SCALEMODE_NEAREST, /**< nearest pixel sampling */
+    SDL_SCALEMODE_LINEAR   /**< linear filtering */
+} SDL_ScaleMode;
+
+/**
+ * The flip mode.
+ *
+ * \since This enum is available since SDL 3.2.0.
+ */
+typedef enum SDL_FlipMode
+{
+    SDL_FLIP_NONE,          /**< Do not flip */
+    SDL_FLIP_HORIZONTAL,    /**< flip horizontally */
+    SDL_FLIP_VERTICAL       /**< flip vertically */
+} SDL_FlipMode;
+
+#ifndef SDL_INTERNAL
+
+/**
+ * A collection of pixels used in software blitting.
+ *
+ * Pixels are arranged in memory in rows, with the top row first. Each row
+ * occupies an amount of memory given by the pitch (sometimes known as the row
+ * stride in non-SDL APIs).
+ *
+ * Within each row, pixels are arranged from left to right until the width is
+ * reached. Each pixel occupies a number of bits appropriate for its format,
+ * with most formats representing each pixel as one or more whole bytes (in
+ * some indexed formats, instead multiple pixels are packed into each byte),
+ * and a byte order given by the format. After encoding all pixels, any
+ * remaining bytes to reach the pitch are used as padding to reach a desired
+ * alignment, and have undefined contents.
+ *
+ * When a surface holds YUV format data, the planes are assumed to be
+ * contiguous without padding between them, e.g. a 32x32 surface in NV12
+ * format with a pitch of 32 would consist of 32x32 bytes of Y plane followed
+ * by 32x16 bytes of UV plane.
+ *
+ * When a surface holds MJPG format data, pixels points at the compressed JPEG
+ * image and pitch is the length of that data.
+ *
+ * \since This struct is available since SDL 3.2.0.
+ *
+ * \sa SDL_CreateSurface
+ * \sa SDL_DestroySurface
+ */
+struct SDL_Surface
+{
+    SDL_SurfaceFlags flags;     /**< The flags of the surface, read-only */
+    SDL_PixelFormat format;     /**< The format of the surface, read-only */
+    int w;                      /**< The width of the surface, read-only. */
+    int h;                      /**< The height of the surface, read-only. */
+    int pitch;                  /**< The distance in bytes between rows of pixels, read-only */
+    void *pixels;               /**< A pointer to the pixels of the surface, the pixels are writeable if non-NULL */
+
+    int refcount;               /**< Application reference count, used when freeing surface */
+
+    void *reserved;             /**< Reserved for internal use */
+};
+#endif /* !SDL_INTERNAL */
+
+typedef struct SDL_Surface SDL_Surface;
+
+/**
+ * Allocate a new surface with a specific pixel format.
+ *
+ * The pixels of the new surface are initialized to zero.
+ *
+ * \param width the width of the surface.
+ * \param height the height of the surface.
+ * \param format the SDL_PixelFormat for the new surface's pixel format.
+ * \returns the new SDL_Surface structure that is created or NULL on failure;
+ *          call SDL_GetError() for more information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_CreateSurfaceFrom
+ * \sa SDL_DestroySurface
+ */
+extern SDL_DECLSPEC SDL_Surface * SDLCALL SDL_CreateSurface(int width, int height, SDL_PixelFormat format);
+
+/**
+ * Allocate a new surface with a specific pixel format and existing pixel
+ * data.
+ *
+ * No copy is made of the pixel data. Pixel data is not managed automatically;
+ * you must free the surface before you free the pixel data.
+ *
+ * Pitch is the offset in bytes from one row of pixels to the next, e.g.
+ * `width*4` for `SDL_PIXELFORMAT_RGBA8888`.
+ *
+ * You may pass NULL for pixels and 0 for pitch to create a surface that you
+ * will fill in with valid values later.
+ *
+ * \param width the width of the surface.
+ * \param height the height of the surface.
+ * \param format the SDL_PixelFormat for the new surface's pixel format.
+ * \param pixels a pointer to existing pixel data.
+ * \param pitch the number of bytes between each row, including padding.
+ * \returns the new SDL_Surface structure that is created or NULL on failure;
+ *          call SDL_GetError() for more information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_CreateSurface
+ * \sa SDL_DestroySurface
+ */
+extern SDL_DECLSPEC SDL_Surface * SDLCALL SDL_CreateSurfaceFrom(int width, int height, SDL_PixelFormat format, void *pixels, int pitch);
+
+/**
+ * Free a surface.
+ *
+ * It is safe to pass NULL to this function.
+ *
+ * \param surface the SDL_Surface to free.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_CreateSurface
+ * \sa SDL_CreateSurfaceFrom
+ */
+extern SDL_DECLSPEC void SDLCALL SDL_DestroySurface(SDL_Surface *surface);
+
+/**
+ * Get the properties associated with a surface.
+ *
+ * The following properties are understood by SDL:
+ *
+ * - `SDL_PROP_SURFACE_SDR_WHITE_POINT_FLOAT`: for HDR10 and floating point
+ *   surfaces, this defines the value of 100% diffuse white, with higher
+ *   values being displayed in the High Dynamic Range headroom. This defaults
+ *   to 203 for HDR10 surfaces and 1.0 for floating point surfaces.
+ * - `SDL_PROP_SURFACE_HDR_HEADROOM_FLOAT`: for HDR10 and floating point
+ *   surfaces, this defines the maximum dynamic range used by the content, in
+ *   terms of the SDR white point. This defaults to 0.0, which disables tone
+ *   mapping.
+ * - `SDL_PROP_SURFACE_TONEMAP_OPERATOR_STRING`: the tone mapping operator
+ *   used when compressing from a surface with high dynamic range to another
+ *   with lower dynamic range. Currently this supports "chrome", which uses
+ *   the same tone mapping that Chrome uses for HDR content, the form "*=N",
+ *   where N is a floating point scale factor applied in linear space, and
+ *   "none", which disables tone mapping. This defaults to "chrome".
+ * - `SDL_PROP_SURFACE_HOTSPOT_X_NUMBER`: the hotspot pixel offset from the
+ *   left edge of the image, if this surface is being used as a cursor.
+ * - `SDL_PROP_SURFACE_HOTSPOT_Y_NUMBER`: the hotspot pixel offset from the
+ *   top edge of the image, if this surface is being used as a cursor.
+ *
+ * \param surface the SDL_Surface structure to query.
+ * \returns a valid property ID on success or 0 on failure; call
+ *          SDL_GetError() for more information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC SDL_PropertiesID SDLCALL SDL_GetSurfaceProperties(SDL_Surface *surface);
+
+#define SDL_PROP_SURFACE_SDR_WHITE_POINT_FLOAT              "SDL.surface.SDR_white_point"
+#define SDL_PROP_SURFACE_HDR_HEADROOM_FLOAT                 "SDL.surface.HDR_headroom"
+#define SDL_PROP_SURFACE_TONEMAP_OPERATOR_STRING            "SDL.surface.tonemap"
+#define SDL_PROP_SURFACE_HOTSPOT_X_NUMBER                   "SDL.surface.hotspot.x"
+#define SDL_PROP_SURFACE_HOTSPOT_Y_NUMBER                   "SDL.surface.hotspot.y"
+
+/**
+ * Set the colorspace used by a surface.
+ *
+ * Setting the colorspace doesn't change the pixels, only how they are
+ * interpreted in color operations.
+ *
+ * \param surface the SDL_Surface structure to update.
+ * \param colorspace an SDL_Colorspace value describing the surface
+ *                   colorspace.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_GetSurfaceColorspace
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_SetSurfaceColorspace(SDL_Surface *surface, SDL_Colorspace colorspace);
+
+/**
+ * Get the colorspace used by a surface.
+ *
+ * The colorspace defaults to SDL_COLORSPACE_SRGB_LINEAR for floating point
+ * formats, SDL_COLORSPACE_HDR10 for 10-bit formats, SDL_COLORSPACE_SRGB for
+ * other RGB surfaces and SDL_COLORSPACE_BT709_FULL for YUV textures.
+ *
+ * \param surface the SDL_Surface structure to query.
+ * \returns the colorspace used by the surface, or SDL_COLORSPACE_UNKNOWN if
+ *          the surface is NULL.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_SetSurfaceColorspace
+ */
+extern SDL_DECLSPEC SDL_Colorspace SDLCALL SDL_GetSurfaceColorspace(SDL_Surface *surface);
+
+/**
+ * Create a palette and associate it with a surface.
+ *
+ * This function creates a palette compatible with the provided surface. The
+ * palette is then returned for you to modify, and the surface will
+ * automatically use the new palette in future operations. You do not need to
+ * destroy the returned palette, it will be freed when the reference count
+ * reaches 0, usually when the surface is destroyed.
+ *
+ * Bitmap surfaces (with format SDL_PIXELFORMAT_INDEX1LSB or
+ * SDL_PIXELFORMAT_INDEX1MSB) will have the palette initialized with 0 as
+ * white and 1 as black. Other surfaces will get a palette initialized with
+ * white in every entry.
+ *
+ * If this function is called for a surface that already has a palette, a new
+ * palette will be created to replace it.
+ *
+ * \param surface the SDL_Surface structure to update.
+ * \returns a new SDL_Palette structure on success or NULL on failure (e.g. if
+ *          the surface didn't have an index format); call SDL_GetError() for
+ *          more information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_SetPaletteColors
+ */
+extern SDL_DECLSPEC SDL_Palette * SDLCALL SDL_CreateSurfacePalette(SDL_Surface *surface);
+
+/**
+ * Set the palette used by a surface.
+ *
+ * A single palette can be shared with many surfaces.
+ *
+ * \param surface the SDL_Surface structure to update.
+ * \param palette the SDL_Palette structure to use.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_CreatePalette
+ * \sa SDL_GetSurfacePalette
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_SetSurfacePalette(SDL_Surface *surface, SDL_Palette *palette);
+
+/**
+ * Get the palette used by a surface.
+ *
+ * \param surface the SDL_Surface structure to query.
+ * \returns a pointer to the palette used by the surface, or NULL if there is
+ *          no palette used.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_SetSurfacePalette
+ */
+extern SDL_DECLSPEC SDL_Palette * SDLCALL SDL_GetSurfacePalette(SDL_Surface *surface);
+
+/**
+ * Add an alternate version of a surface.
+ *
+ * This function adds an alternate version of this surface, usually used for
+ * content with high DPI representations like cursors or icons. The size,
+ * format, and content do not need to match the original surface, and these
+ * alternate versions will not be updated when the original surface changes.
+ *
+ * This function adds a reference to the alternate version, so you should call
+ * SDL_DestroySurface() on the image after this call.
+ *
+ * \param surface the SDL_Surface structure to update.
+ * \param image a pointer to an alternate SDL_Surface to associate with this
+ *              surface.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_RemoveSurfaceAlternateImages
+ * \sa SDL_GetSurfaceImages
+ * \sa SDL_SurfaceHasAlternateImages
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_AddSurfaceAlternateImage(SDL_Surface *surface, SDL_Surface *image);
+
+/**
+ * Return whether a surface has alternate versions available.
+ *
+ * \param surface the SDL_Surface structure to query.
+ * \returns true if alternate versions are available or false otherwise.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_AddSurfaceAlternateImage
+ * \sa SDL_RemoveSurfaceAlternateImages
+ * \sa SDL_GetSurfaceImages
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_SurfaceHasAlternateImages(SDL_Surface *surface);
+
+/**
+ * Get an array including all versions of a surface.
+ *
+ * This returns all versions of a surface, with the surface being queried as
+ * the first element in the returned array.
+ *
+ * Freeing the array of surfaces does not affect the surfaces in the array.
+ * They are still referenced by the surface being queried and will be cleaned
+ * up normally.
+ *
+ * \param surface the SDL_Surface structure to query.
+ * \param count a pointer filled in with the number of surface pointers
+ *              returned, may be NULL.
+ * \returns a NULL terminated array of SDL_Surface pointers or NULL on
+ *          failure; call SDL_GetError() for more information. This should be
+ *          freed with SDL_free() when it is no longer needed.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_AddSurfaceAlternateImage
+ * \sa SDL_RemoveSurfaceAlternateImages
+ * \sa SDL_SurfaceHasAlternateImages
+ */
+extern SDL_DECLSPEC SDL_Surface ** SDLCALL SDL_GetSurfaceImages(SDL_Surface *surface, int *count);
+
+/**
+ * Remove all alternate versions of a surface.
+ *
+ * This function removes a reference from all the alternative versions,
+ * destroying them if this is the last reference to them.
+ *
+ * \param surface the SDL_Surface structure to update.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_AddSurfaceAlternateImage
+ * \sa SDL_GetSurfaceImages
+ * \sa SDL_SurfaceHasAlternateImages
+ */
+extern SDL_DECLSPEC void SDLCALL SDL_RemoveSurfaceAlternateImages(SDL_Surface *surface);
+
+/**
+ * Set up a surface for directly accessing the pixels.
+ *
+ * Between calls to SDL_LockSurface() / SDL_UnlockSurface(), you can write to
+ * and read from `surface->pixels`, using the pixel format stored in
+ * `surface->format`. Once you are done accessing the surface, you should use
+ * SDL_UnlockSurface() to release it.
+ *
+ * Not all surfaces require locking. If `SDL_MUSTLOCK(surface)` evaluates to
+ * 0, then you can read and write to the surface at any time, and the pixel
+ * format of the surface will not change.
+ *
+ * \param surface the SDL_Surface structure to be locked.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_MUSTLOCK
+ * \sa SDL_UnlockSurface
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_LockSurface(SDL_Surface *surface);
+
+/**
+ * Release a surface after directly accessing the pixels.
+ *
+ * \param surface the SDL_Surface structure to be unlocked.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_LockSurface
+ */
+extern SDL_DECLSPEC void SDLCALL SDL_UnlockSurface(SDL_Surface *surface);
+
+/**
+ * Load a BMP image from a seekable SDL data stream.
+ *
+ * The new surface should be freed with SDL_DestroySurface(). Not doing so
+ * will result in a memory leak.
+ *
+ * \param src the data stream for the surface.
+ * \param closeio if true, calls SDL_CloseIO() on `src` before returning, even
+ *                in the case of an error.
+ * \returns a pointer to a new SDL_Surface structure or NULL on failure; call
+ *          SDL_GetError() for more information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_DestroySurface
+ * \sa SDL_LoadBMP
+ * \sa SDL_SaveBMP_IO
+ */
+extern SDL_DECLSPEC SDL_Surface * SDLCALL SDL_LoadBMP_IO(SDL_IOStream *src, bool closeio);
+
+/**
+ * Load a BMP image from a file.
+ *
+ * The new surface should be freed with SDL_DestroySurface(). Not doing so
+ * will result in a memory leak.
+ *
+ * \param file the BMP file to load.
+ * \returns a pointer to a new SDL_Surface structure or NULL on failure; call
+ *          SDL_GetError() for more information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_DestroySurface
+ * \sa SDL_LoadBMP_IO
+ * \sa SDL_SaveBMP
+ */
+extern SDL_DECLSPEC SDL_Surface * SDLCALL SDL_LoadBMP(const char *file);
+
+/**
+ * Save a surface to a seekable SDL data stream in BMP format.
+ *
+ * Surfaces with a 24-bit, 32-bit and paletted 8-bit format get saved in the
+ * BMP directly. Other RGB formats with 8-bit or higher get converted to a
+ * 24-bit surface or, if they have an alpha mask or a colorkey, to a 32-bit
+ * surface before they are saved. YUV and paletted 1-bit and 4-bit formats are
+ * not supported.
+ *
+ * \param surface the SDL_Surface structure containing the image to be saved.
+ * \param dst a data stream to save to.
+ * \param closeio if true, calls SDL_CloseIO() on `dst` before returning, even
+ *                in the case of an error.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_LoadBMP_IO
+ * \sa SDL_SaveBMP
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_SaveBMP_IO(SDL_Surface *surface, SDL_IOStream *dst, bool closeio);
+
+/**
+ * Save a surface to a file.
+ *
+ * Surfaces with a 24-bit, 32-bit and paletted 8-bit format get saved in the
+ * BMP directly. Other RGB formats with 8-bit or higher get converted to a
+ * 24-bit surface or, if they have an alpha mask or a colorkey, to a 32-bit
+ * surface before they are saved. YUV and paletted 1-bit and 4-bit formats are
+ * not supported.
+ *
+ * \param surface the SDL_Surface structure containing the image to be saved.
+ * \param file a file to save to.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_LoadBMP
+ * \sa SDL_SaveBMP_IO
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_SaveBMP(SDL_Surface *surface, const char *file);
+
+/**
+ * Set the RLE acceleration hint for a surface.
+ *
+ * If RLE is enabled, color key and alpha blending blits are much faster, but
+ * the surface must be locked before directly accessing the pixels.
+ *
+ * \param surface the SDL_Surface structure to optimize.
+ * \param enabled true to enable RLE acceleration, false to disable it.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_BlitSurface
+ * \sa SDL_LockSurface
+ * \sa SDL_UnlockSurface
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_SetSurfaceRLE(SDL_Surface *surface, bool enabled);
+
+/**
+ * Returns whether the surface is RLE enabled.
+ *
+ * It is safe to pass a NULL `surface` here; it will return false.
+ *
+ * \param surface the SDL_Surface structure to query.
+ * \returns true if the surface is RLE enabled, false otherwise.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_SetSurfaceRLE
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_SurfaceHasRLE(SDL_Surface *surface);
+
+/**
+ * Set the color key (transparent pixel) in a surface.
+ *
+ * The color key defines a pixel value that will be treated as transparent in
+ * a blit. For example, one can use this to specify that cyan pixels should be
+ * considered transparent, and therefore not rendered.
+ *
+ * It is a pixel of the format used by the surface, as generated by
+ * SDL_MapRGB().
+ *
+ * \param surface the SDL_Surface structure to update.
+ * \param enabled true to enable color key, false to disable color key.
+ * \param key the transparent pixel.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_GetSurfaceColorKey
+ * \sa SDL_SetSurfaceRLE
+ * \sa SDL_SurfaceHasColorKey
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_SetSurfaceColorKey(SDL_Surface *surface, bool enabled, Uint32 key);
+
+/**
+ * Returns whether the surface has a color key.
+ *
+ * It is safe to pass a NULL `surface` here; it will return false.
+ *
+ * \param surface the SDL_Surface structure to query.
+ * \returns true if the surface has a color key, false otherwise.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_SetSurfaceColorKey
+ * \sa SDL_GetSurfaceColorKey
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_SurfaceHasColorKey(SDL_Surface *surface);
+
+/**
+ * Get the color key (transparent pixel) for a surface.
+ *
+ * The color key is a pixel of the format used by the surface, as generated by
+ * SDL_MapRGB().
+ *
+ * If the surface doesn't have color key enabled this function returns false.
+ *
+ * \param surface the SDL_Surface structure to query.
+ * \param key a pointer filled in with the transparent pixel.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_SetSurfaceColorKey
+ * \sa SDL_SurfaceHasColorKey
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_GetSurfaceColorKey(SDL_Surface *surface, Uint32 *key);
+
+/**
+ * Set an additional color value multiplied into blit operations.
+ *
+ * When this surface is blitted, during the blit operation each source color
+ * channel is modulated by the appropriate color value according to the
+ * following formula:
+ *
+ * `srcC = srcC * (color / 255)`
+ *
+ * \param surface the SDL_Surface structure to update.
+ * \param r the red color value multiplied into blit operations.
+ * \param g the green color value multiplied into blit operations.
+ * \param b the blue color value multiplied into blit operations.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_GetSurfaceColorMod
+ * \sa SDL_SetSurfaceAlphaMod
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_SetSurfaceColorMod(SDL_Surface *surface, Uint8 r, Uint8 g, Uint8 b);
+
+
+/**
+ * Get the additional color value multiplied into blit operations.
+ *
+ * \param surface the SDL_Surface structure to query.
+ * \param r a pointer filled in with the current red color value.
+ * \param g a pointer filled in with the current green color value.
+ * \param b a pointer filled in with the current blue color value.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_GetSurfaceAlphaMod
+ * \sa SDL_SetSurfaceColorMod
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_GetSurfaceColorMod(SDL_Surface *surface, Uint8 *r, Uint8 *g, Uint8 *b);
+
+/**
+ * Set an additional alpha value used in blit operations.
+ *
+ * When this surface is blitted, during the blit operation the source alpha
+ * value is modulated by this alpha value according to the following formula:
+ *
+ * `srcA = srcA * (alpha / 255)`
+ *
+ * \param surface the SDL_Surface structure to update.
+ * \param alpha the alpha value multiplied into blit operations.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_GetSurfaceAlphaMod
+ * \sa SDL_SetSurfaceColorMod
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_SetSurfaceAlphaMod(SDL_Surface *surface, Uint8 alpha);
+
+/**
+ * Get the additional alpha value used in blit operations.
+ *
+ * \param surface the SDL_Surface structure to query.
+ * \param alpha a pointer filled in with the current alpha value.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_GetSurfaceColorMod
+ * \sa SDL_SetSurfaceAlphaMod
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_GetSurfaceAlphaMod(SDL_Surface *surface, Uint8 *alpha);
+
+/**
+ * Set the blend mode used for blit operations.
+ *
+ * To copy a surface to another surface (or texture) without blending with the
+ * existing data, the blendmode of the SOURCE surface should be set to
+ * `SDL_BLENDMODE_NONE`.
+ *
+ * \param surface the SDL_Surface structure to update.
+ * \param blendMode the SDL_BlendMode to use for blit blending.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_GetSurfaceBlendMode
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_SetSurfaceBlendMode(SDL_Surface *surface, SDL_BlendMode blendMode);
+
+/**
+ * Get the blend mode used for blit operations.
+ *
+ * \param surface the SDL_Surface structure to query.
+ * \param blendMode a pointer filled in with the current SDL_BlendMode.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_SetSurfaceBlendMode
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_GetSurfaceBlendMode(SDL_Surface *surface, SDL_BlendMode *blendMode);
+
+/**
+ * Set the clipping rectangle for a surface.
+ *
+ * When `surface` is the destination of a blit, only the area within the clip
+ * rectangle is drawn into.
+ *
+ * Note that blits are automatically clipped to the edges of the source and
+ * destination surfaces.
+ *
+ * \param surface the SDL_Surface structure to be clipped.
+ * \param rect the SDL_Rect structure representing the clipping rectangle, or
+ *             NULL to disable clipping.
+ * \returns true if the rectangle intersects the surface, otherwise false and
+ *          blits will be completely clipped.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_GetSurfaceClipRect
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_SetSurfaceClipRect(SDL_Surface *surface, const SDL_Rect *rect);
+
+/**
+ * Get the clipping rectangle for a surface.
+ *
+ * When `surface` is the destination of a blit, only the area within the clip
+ * rectangle is drawn into.
+ *
+ * \param surface the SDL_Surface structure representing the surface to be
+ *                clipped.
+ * \param rect an SDL_Rect structure filled in with the clipping rectangle for
+ *             the surface.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_SetSurfaceClipRect
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_GetSurfaceClipRect(SDL_Surface *surface, SDL_Rect *rect);
+
+/**
+ * Flip a surface vertically or horizontally.
+ *
+ * \param surface the surface to flip.
+ * \param flip the direction to flip.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_FlipSurface(SDL_Surface *surface, SDL_FlipMode flip);
+
+/**
+ * Creates a new surface identical to the existing surface.
+ *
+ * If the original surface has alternate images, the new surface will have a
+ * reference to them as well.
+ *
+ * The returned surface should be freed with SDL_DestroySurface().
+ *
+ * \param surface the surface to duplicate.
+ * \returns a copy of the surface or NULL on failure; call SDL_GetError() for
+ *          more information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_DestroySurface
+ */
+extern SDL_DECLSPEC SDL_Surface * SDLCALL SDL_DuplicateSurface(SDL_Surface *surface);
+
+/**
+ * Creates a new surface identical to the existing surface, scaled to the
+ * desired size.
+ *
+ * The returned surface should be freed with SDL_DestroySurface().
+ *
+ * \param surface the surface to duplicate and scale.
+ * \param width the width of the new surface.
+ * \param height the height of the new surface.
+ * \param scaleMode the SDL_ScaleMode to be used.
+ * \returns a copy of the surface or NULL on failure; call SDL_GetError() for
+ *          more information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_DestroySurface
+ */
+extern SDL_DECLSPEC SDL_Surface * SDLCALL SDL_ScaleSurface(SDL_Surface *surface, int width, int height, SDL_ScaleMode scaleMode);
+
+/**
+ * Copy an existing surface to a new surface of the specified format.
+ *
+ * This function is used to optimize images for faster *repeat* blitting. This
+ * is accomplished by converting the original and storing the result as a new
+ * surface. The new, optimized surface can then be used as the source for
+ * future blits, making them faster.
+ *
+ * If you are converting to an indexed surface and want to map colors to a
+ * palette, you can use SDL_ConvertSurfaceAndColorspace() instead.
+ *
+ * If the original surface has alternate images, the new surface will have a
+ * reference to them as well.
+ *
+ * \param surface the existing SDL_Surface structure to convert.
+ * \param format the new pixel format.
+ * \returns the new SDL_Surface structure that is created or NULL on failure;
+ *          call SDL_GetError() for more information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_ConvertSurfaceAndColorspace
+ * \sa SDL_DestroySurface
+ */
+extern SDL_DECLSPEC SDL_Surface * SDLCALL SDL_ConvertSurface(SDL_Surface *surface, SDL_PixelFormat format);
+
+/**
+ * Copy an existing surface to a new surface of the specified format and
+ * colorspace.
+ *
+ * This function converts an existing surface to a new format and colorspace
+ * and returns the new surface. This will perform any pixel format and
+ * colorspace conversion needed.
+ *
+ * If the original surface has alternate images, the new surface will have a
+ * reference to them as well.
+ *
+ * \param surface the existing SDL_Surface structure to convert.
+ * \param format the new pixel format.
+ * \param palette an optional palette to use for indexed formats, may be NULL.
+ * \param colorspace the new colorspace.
+ * \param props an SDL_PropertiesID with additional color properties, or 0.
+ * \returns the new SDL_Surface structure that is created or NULL on failure;
+ *          call SDL_GetError() for more information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_ConvertSurface
+ * \sa SDL_DestroySurface
+ */
+extern SDL_DECLSPEC SDL_Surface * SDLCALL SDL_ConvertSurfaceAndColorspace(SDL_Surface *surface, SDL_PixelFormat format, SDL_Palette *palette, SDL_Colorspace colorspace, SDL_PropertiesID props);
+
+/**
+ * Copy a block of pixels of one format to another format.
+ *
+ * \param width the width of the block to copy, in pixels.
+ * \param height the height of the block to copy, in pixels.
+ * \param src_format an SDL_PixelFormat value of the `src` pixels format.
+ * \param src a pointer to the source pixels.
+ * \param src_pitch the pitch of the source pixels, in bytes.
+ * \param dst_format an SDL_PixelFormat value of the `dst` pixels format.
+ * \param dst a pointer to be filled in with new pixel data.
+ * \param dst_pitch the pitch of the destination pixels, in bytes.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_ConvertPixelsAndColorspace
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_ConvertPixels(int width, int height, SDL_PixelFormat src_format, const void *src, int src_pitch, SDL_PixelFormat dst_format, void *dst, int dst_pitch);
+
+/**
+ * Copy a block of pixels of one format and colorspace to another format and
+ * colorspace.
+ *
+ * \param width the width of the block to copy, in pixels.
+ * \param height the height of the block to copy, in pixels.
+ * \param src_format an SDL_PixelFormat value of the `src` pixels format.
+ * \param src_colorspace an SDL_Colorspace value describing the colorspace of
+ *                       the `src` pixels.
+ * \param src_properties an SDL_PropertiesID with additional source color
+ *                       properties, or 0.
+ * \param src a pointer to the source pixels.
+ * \param src_pitch the pitch of the source pixels, in bytes.
+ * \param dst_format an SDL_PixelFormat value of the `dst` pixels format.
+ * \param dst_colorspace an SDL_Colorspace value describing the colorspace of
+ *                       the `dst` pixels.
+ * \param dst_properties an SDL_PropertiesID with additional destination color
+ *                       properties, or 0.
+ * \param dst a pointer to be filled in with new pixel data.
+ * \param dst_pitch the pitch of the destination pixels, in bytes.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_ConvertPixels
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_ConvertPixelsAndColorspace(int width, int height, SDL_PixelFormat src_format, SDL_Colorspace src_colorspace, SDL_PropertiesID src_properties, const void *src, int src_pitch, SDL_PixelFormat dst_format, SDL_Colorspace dst_colorspace, SDL_PropertiesID dst_properties, void *dst, int dst_pitch);
+
+/**
+ * Premultiply the alpha on a block of pixels.
+ *
+ * This is safe to use with src == dst, but not for other overlapping areas.
+ *
+ * \param width the width of the block to convert, in pixels.
+ * \param height the height of the block to convert, in pixels.
+ * \param src_format an SDL_PixelFormat value of the `src` pixels format.
+ * \param src a pointer to the source pixels.
+ * \param src_pitch the pitch of the source pixels, in bytes.
+ * \param dst_format an SDL_PixelFormat value of the `dst` pixels format.
+ * \param dst a pointer to be filled in with premultiplied pixel data.
+ * \param dst_pitch the pitch of the destination pixels, in bytes.
+ * \param linear true to convert from sRGB to linear space for the alpha
+ *               multiplication, false to do multiplication in sRGB space.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_PremultiplyAlpha(int width, int height, SDL_PixelFormat src_format, const void *src, int src_pitch, SDL_PixelFormat dst_format, void *dst, int dst_pitch, bool linear);
+
+/**
+ * Premultiply the alpha in a surface.
+ *
+ * This is safe to use with src == dst, but not for other overlapping areas.
+ *
+ * \param surface the surface to modify.
+ * \param linear true to convert from sRGB to linear space for the alpha
+ *               multiplication, false to do multiplication in sRGB space.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_PremultiplySurfaceAlpha(SDL_Surface *surface, bool linear);
+
+/**
+ * Clear a surface with a specific color, with floating point precision.
+ *
+ * This function handles all surface formats, and ignores any clip rectangle.
+ *
+ * If the surface is YUV, the color is assumed to be in the sRGB colorspace,
+ * otherwise the color is assumed to be in the colorspace of the suface.
+ *
+ * \param surface the SDL_Surface to clear.
+ * \param r the red component of the pixel, normally in the range 0-1.
+ * \param g the green component of the pixel, normally in the range 0-1.
+ * \param b the blue component of the pixel, normally in the range 0-1.
+ * \param a the alpha component of the pixel, normally in the range 0-1.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_ClearSurface(SDL_Surface *surface, float r, float g, float b, float a);
+
+/**
+ * Perform a fast fill of a rectangle with a specific color.
+ *
+ * `color` should be a pixel of the format used by the surface, and can be
+ * generated by SDL_MapRGB() or SDL_MapRGBA(). If the color value contains an
+ * alpha component then the destination is simply filled with that alpha
+ * information, no blending takes place.
+ *
+ * If there is a clip rectangle set on the destination (set via
+ * SDL_SetSurfaceClipRect()), then this function will fill based on the
+ * intersection of the clip rectangle and `rect`.
+ *
+ * \param dst the SDL_Surface structure that is the drawing target.
+ * \param rect the SDL_Rect structure representing the rectangle to fill, or
+ *             NULL to fill the entire surface.
+ * \param color the color to fill with.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_FillSurfaceRects
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_FillSurfaceRect(SDL_Surface *dst, const SDL_Rect *rect, Uint32 color);
+
+/**
+ * Perform a fast fill of a set of rectangles with a specific color.
+ *
+ * `color` should be a pixel of the format used by the surface, and can be
+ * generated by SDL_MapRGB() or SDL_MapRGBA(). If the color value contains an
+ * alpha component then the destination is simply filled with that alpha
+ * information, no blending takes place.
+ *
+ * If there is a clip rectangle set on the destination (set via
+ * SDL_SetSurfaceClipRect()), then this function will fill based on the
+ * intersection of the clip rectangle and `rect`.
+ *
+ * \param dst the SDL_Surface structure that is the drawing target.
+ * \param rects an array of SDL_Rects representing the rectangles to fill.
+ * \param count the number of rectangles in the array.
+ * \param color the color to fill with.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_FillSurfaceRect
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_FillSurfaceRects(SDL_Surface *dst, const SDL_Rect *rects, int count, Uint32 color);
+
+/**
+ * Performs a fast blit from the source surface to the destination surface
+ * with clipping.
+ *
+ * If either `srcrect` or `dstrect` are NULL, the entire surface (`src` or
+ * `dst`) is copied while ensuring clipping to `dst->clip_rect`.
+ *
+ * The final blit rectangles are saved in `srcrect` and `dstrect` after all
+ * clipping is performed.
+ *
+ * The blit function should not be called on a locked surface.
+ *
+ * The blit semantics for surfaces with and without blending and colorkey are
+ * defined as follows:
+ *
+ * ```
+ *    RGBA->RGB:
+ *      Source surface blend mode set to SDL_BLENDMODE_BLEND:
+ *       alpha-blend (using the source alpha-channel and per-surface alpha)
+ *       SDL_SRCCOLORKEY ignored.
+ *     Source surface blend mode set to SDL_BLENDMODE_NONE:
+ *       copy RGB.
+ *       if SDL_SRCCOLORKEY set, only copy the pixels that do not match the
+ *       RGB values of the source color key, ignoring alpha in the
+ *       comparison.
+ *
+ *   RGB->RGBA:
+ *     Source surface blend mode set to SDL_BLENDMODE_BLEND:
+ *       alpha-blend (using the source per-surface alpha)
+ *     Source surface blend mode set to SDL_BLENDMODE_NONE:
+ *       copy RGB, set destination alpha to source per-surface alpha value.
+ *     both:
+ *       if SDL_SRCCOLORKEY set, only copy the pixels that do not match the
+ *       source color key.
+ *
+ *   RGBA->RGBA:
+ *     Source surface blend mode set to SDL_BLENDMODE_BLEND:
+ *       alpha-blend (using the source alpha-channel and per-surface alpha)
+ *       SDL_SRCCOLORKEY ignored.
+ *     Source surface blend mode set to SDL_BLENDMODE_NONE:
+ *       copy all of RGBA to the destination.
+ *       if SDL_SRCCOLORKEY set, only copy the pixels that do not match the
+ *       RGB values of the source color key, ignoring alpha in the
+ *       comparison.
+ *
+ *   RGB->RGB:
+ *     Source surface blend mode set to SDL_BLENDMODE_BLEND:
+ *       alpha-blend (using the source per-surface alpha)
+ *     Source surface blend mode set to SDL_BLENDMODE_NONE:
+ *       copy RGB.
+ *     both:
+ *       if SDL_SRCCOLORKEY set, only copy the pixels that do not match the
+ *       source color key.
+ * ```
+ *
+ * \param src the SDL_Surface structure to be copied from.
+ * \param srcrect the SDL_Rect structure representing the rectangle to be
+ *                copied, or NULL to copy the entire surface.
+ * \param dst the SDL_Surface structure that is the blit target.
+ * \param dstrect the SDL_Rect structure representing the x and y position in
+ *                the destination surface, or NULL for (0,0). The width and
+ *                height are ignored, and are copied from `srcrect`. If you
+ *                want a specific width and height, you should use
+ *                SDL_BlitSurfaceScaled().
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \threadsafety 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.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_BlitSurfaceScaled
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_BlitSurface(SDL_Surface *src, const SDL_Rect *srcrect, SDL_Surface *dst, const SDL_Rect *dstrect);
+
+/**
+ * Perform low-level surface blitting only.
+ *
+ * This is a semi-private blit function and it performs low-level surface
+ * blitting, assuming the input rectangles have already been clipped.
+ *
+ * \param src the SDL_Surface structure to be copied from.
+ * \param srcrect the SDL_Rect structure representing the rectangle to be
+ *                copied, may not be NULL.
+ * \param dst the SDL_Surface structure that is the blit target.
+ * \param dstrect the SDL_Rect structure representing the target rectangle in
+ *                the destination surface, may not be NULL.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \threadsafety 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.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_BlitSurface
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_BlitSurfaceUnchecked(SDL_Surface *src, const SDL_Rect *srcrect, SDL_Surface *dst, const SDL_Rect *dstrect);
+
+/**
+ * Perform a scaled blit to a destination surface, which may be of a different
+ * format.
+ *
+ * \param src the SDL_Surface structure to be copied from.
+ * \param srcrect the SDL_Rect structure representing the rectangle to be
+ *                copied, or NULL to copy the entire surface.
+ * \param dst the SDL_Surface structure that is the blit target.
+ * \param dstrect the SDL_Rect structure representing the target rectangle in
+ *                the destination surface, or NULL to fill the entire
+ *                destination surface.
+ * \param scaleMode the SDL_ScaleMode to be used.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \threadsafety 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.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_BlitSurface
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_BlitSurfaceScaled(SDL_Surface *src, const SDL_Rect *srcrect, SDL_Surface *dst, const SDL_Rect *dstrect, SDL_ScaleMode scaleMode);
+
+/**
+ * Perform low-level surface scaled blitting only.
+ *
+ * This is a semi-private function and it performs low-level surface blitting,
+ * assuming the input rectangles have already been clipped.
+ *
+ * \param src the SDL_Surface structure to be copied from.
+ * \param srcrect the SDL_Rect structure representing the rectangle to be
+ *                copied, may not be NULL.
+ * \param dst the SDL_Surface structure that is the blit target.
+ * \param dstrect the SDL_Rect structure representing the target rectangle in
+ *                the destination surface, may not be NULL.
+ * \param scaleMode the SDL_ScaleMode to be used.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \threadsafety 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.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_BlitSurfaceScaled
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_BlitSurfaceUncheckedScaled(SDL_Surface *src, const SDL_Rect *srcrect, SDL_Surface *dst, const SDL_Rect *dstrect, SDL_ScaleMode scaleMode);
+
+/**
+ * Perform a stretched pixel copy from one surface to another.
+ *
+ * \param src the SDL_Surface structure to be copied from.
+ * \param srcrect the SDL_Rect structure representing the rectangle to be
+ *                copied, may not be NULL.
+ * \param dst the SDL_Surface structure that is the blit target.
+ * \param dstrect the SDL_Rect structure representing the target rectangle in
+ *                the destination surface, may not be NULL.
+ * \param scaleMode the SDL_ScaleMode to be used.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \threadsafety 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.
+ *
+ * \since This function is available since SDL 3.4.0.
+ *
+ * \sa SDL_BlitSurfaceScaled
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_StretchSurface(SDL_Surface *src, const SDL_Rect *srcrect, SDL_Surface *dst, const SDL_Rect *dstrect, SDL_ScaleMode scaleMode);
+
+/**
+ * Perform a tiled blit to a destination surface, which may be of a different
+ * format.
+ *
+ * The pixels in `srcrect` will be repeated as many times as needed to
+ * completely fill `dstrect`.
+ *
+ * \param src the SDL_Surface structure to be copied from.
+ * \param srcrect the SDL_Rect structure representing the rectangle to be
+ *                copied, or NULL to copy the entire surface.
+ * \param dst the SDL_Surface structure that is the blit target.
+ * \param dstrect the SDL_Rect structure representing the target rectangle in
+ *                the destination surface, or NULL to fill the entire surface.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \threadsafety 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.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_BlitSurface
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_BlitSurfaceTiled(SDL_Surface *src, const SDL_Rect *srcrect, SDL_Surface *dst, const SDL_Rect *dstrect);
+
+/**
+ * Perform a scaled and tiled blit to a destination surface, which may be of a
+ * different format.
+ *
+ * The pixels in `srcrect` will be scaled and repeated as many times as needed
+ * to completely fill `dstrect`.
+ *
+ * \param src the SDL_Surface structure to be copied from.
+ * \param srcrect the SDL_Rect structure representing the rectangle to be
+ *                copied, or NULL to copy the entire surface.
+ * \param scale the scale used to transform srcrect into the destination
+ *              rectangle, e.g. a 32x32 texture with a scale of 2 would fill
+ *              64x64 tiles.
+ * \param scaleMode scale algorithm to be used.
+ * \param dst the SDL_Surface structure that is the blit target.
+ * \param dstrect the SDL_Rect structure representing the target rectangle in
+ *                the destination surface, or NULL to fill the entire surface.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \threadsafety 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.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_BlitSurface
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_BlitSurfaceTiledWithScale(SDL_Surface *src, const SDL_Rect *srcrect, float scale, SDL_ScaleMode scaleMode, SDL_Surface *dst, const SDL_Rect *dstrect);
+
+/**
+ * Perform a scaled blit using the 9-grid algorithm to a destination surface,
+ * which may be of a different format.
+ *
+ * The pixels in the source surface are split into a 3x3 grid, using the
+ * different corner sizes for each corner, and the sides and center making up
+ * the remaining pixels. The corners are then scaled using `scale` and fit
+ * into the corners of the destination rectangle. The sides and center are
+ * then stretched into place to cover the remaining destination rectangle.
+ *
+ * \param src the SDL_Surface structure to be copied from.
+ * \param srcrect the SDL_Rect structure representing the rectangle to be used
+ *                for the 9-grid, or NULL to use the entire surface.
+ * \param left_width the width, in pixels, of the left corners in `srcrect`.
+ * \param right_width the width, in pixels, of the right corners in `srcrect`.
+ * \param top_height the height, in pixels, of the top corners in `srcrect`.
+ * \param bottom_height the height, in pixels, of the bottom corners in
+ *                      `srcrect`.
+ * \param scale the scale used to transform the corner of `srcrect` into the
+ *              corner of `dstrect`, or 0.0f for an unscaled blit.
+ * \param scaleMode scale algorithm to be used.
+ * \param dst the SDL_Surface structure that is the blit target.
+ * \param dstrect the SDL_Rect structure representing the target rectangle in
+ *                the destination surface, or NULL to fill the entire surface.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \threadsafety 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.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_BlitSurface
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_BlitSurface9Grid(SDL_Surface *src, const SDL_Rect *srcrect, int left_width, int right_width, int top_height, int bottom_height, float scale, SDL_ScaleMode scaleMode, SDL_Surface *dst, const SDL_Rect *dstrect);
+
+/**
+ * Map an RGB triple to an opaque pixel value for a surface.
+ *
+ * This function maps the RGB color value to the specified pixel format and
+ * returns the pixel value best approximating the given RGB color value for
+ * the given pixel format.
+ *
+ * If the surface has a palette, the index of the closest matching color in
+ * the palette will be returned.
+ *
+ * If the surface pixel format has an alpha component it will be returned as
+ * all 1 bits (fully opaque).
+ *
+ * If the pixel format bpp (color depth) is less than 32-bpp then the unused
+ * upper bits of the return value can safely be ignored (e.g., with a 16-bpp
+ * format the return value can be assigned to a Uint16, and similarly a Uint8
+ * for an 8-bpp format).
+ *
+ * \param surface the surface to use for the pixel format and palette.
+ * \param r the red component of the pixel in the range 0-255.
+ * \param g the green component of the pixel in the range 0-255.
+ * \param b the blue component of the pixel in the range 0-255.
+ * \returns a pixel value.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_MapSurfaceRGBA
+ */
+extern SDL_DECLSPEC Uint32 SDLCALL SDL_MapSurfaceRGB(SDL_Surface *surface, Uint8 r, Uint8 g, Uint8 b);
+
+/**
+ * Map an RGBA quadruple to a pixel value for a surface.
+ *
+ * This function maps the RGBA color value to the specified pixel format and
+ * returns the pixel value best approximating the given RGBA color value for
+ * the given pixel format.
+ *
+ * If the surface pixel format has no alpha component the alpha value will be
+ * ignored (as it will be in formats with a palette).
+ *
+ * If the surface has a palette, the index of the closest matching color in
+ * the palette will be returned.
+ *
+ * If the pixel format bpp (color depth) is less than 32-bpp then the unused
+ * upper bits of the return value can safely be ignored (e.g., with a 16-bpp
+ * format the return value can be assigned to a Uint16, and similarly a Uint8
+ * for an 8-bpp format).
+ *
+ * \param surface the surface to use for the pixel format and palette.
+ * \param r the red component of the pixel in the range 0-255.
+ * \param g the green component of the pixel in the range 0-255.
+ * \param b the blue component of the pixel in the range 0-255.
+ * \param a the alpha component of the pixel in the range 0-255.
+ * \returns a pixel value.
+ *
+ * \since This function is available since SDL 3.2.0.
+ *
+ * \sa SDL_MapSurfaceRGB
+ */
+extern SDL_DECLSPEC Uint32 SDLCALL SDL_MapSurfaceRGBA(SDL_Surface *surface, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
+
+/**
+ * Retrieves a single pixel from a surface.
+ *
+ * This function prioritizes correctness over speed: it is suitable for unit
+ * tests, but is not intended for use in a game engine.
+ *
+ * Like SDL_GetRGBA, this uses the entire 0..255 range when converting color
+ * components from pixel formats with less than 8 bits per RGB component.
+ *
+ * \param surface the surface to read.
+ * \param x the horizontal coordinate, 0 <= x < width.
+ * \param y the vertical coordinate, 0 <= y < height.
+ * \param r a pointer filled in with the red channel, 0-255, or NULL to ignore
+ *          this channel.
+ * \param g a pointer filled in with the green channel, 0-255, or NULL to
+ *          ignore this channel.
+ * \param b a pointer filled in with the blue channel, 0-255, or NULL to
+ *          ignore this channel.
+ * \param a a pointer filled in with the alpha channel, 0-255, or NULL to
+ *          ignore this channel.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_ReadSurfacePixel(SDL_Surface *surface, int x, int y, Uint8 *r, Uint8 *g, Uint8 *b, Uint8 *a);
+
+/**
+ * Retrieves a single pixel from a surface.
+ *
+ * This function prioritizes correctness over speed: it is suitable for unit
+ * tests, but is not intended for use in a game engine.
+ *
+ * \param surface the surface to read.
+ * \param x the horizontal coordinate, 0 <= x < width.
+ * \param y the vertical coordinate, 0 <= y < height.
+ * \param r a pointer filled in with the red channel, normally in the range
+ *          0-1, or NULL to ignore this channel.
+ * \param g a pointer filled in with the green channel, normally in the range
+ *          0-1, or NULL to ignore this channel.
+ * \param b a pointer filled in with the blue channel, normally in the range
+ *          0-1, or NULL to ignore this channel.
+ * \param a a pointer filled in with the alpha channel, normally in the range
+ *          0-1, or NULL to ignore this channel.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_ReadSurfacePixelFloat(SDL_Surface *surface, int x, int y, float *r, float *g, float *b, float *a);
+
+/**
+ * Writes a single pixel to a surface.
+ *
+ * This function prioritizes correctness over speed: it is suitable for unit
+ * tests, but is not intended for use in a game engine.
+ *
+ * Like SDL_MapRGBA, this uses the entire 0..255 range when converting color
+ * components from pixel formats with less than 8 bits per RGB component.
+ *
+ * \param surface the surface to write.
+ * \param x the horizontal coordinate, 0 <= x < width.
+ * \param y the vertical coordinate, 0 <= y < height.
+ * \param r the red channel value, 0-255.
+ * \param g the green channel value, 0-255.
+ * \param b the blue channel value, 0-255.
+ * \param a the alpha channel value, 0-255.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_WriteSurfacePixel(SDL_Surface *surface, int x, int y, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
+
+/**
+ * Writes a single pixel to a surface.
+ *
+ * This function prioritizes correctness over speed: it is suitable for unit
+ * tests, but is not intended for use in a game engine.
+ *
+ * \param surface the surface to write.
+ * \param x the horizontal coordinate, 0 <= x < width.
+ * \param y the vertical coordinate, 0 <= y < height.
+ * \param r the red channel value, normally in the range 0-1.
+ * \param g the green channel value, normally in the range 0-1.
+ * \param b the blue channel value, normally in the range 0-1.
+ * \param a the alpha channel value, normally in the range 0-1.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_WriteSurfacePixelFloat(SDL_Surface *surface, int x, int y, float r, float g, float b, float a);
+
+/* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+}
+#endif
+#include <SDL3/SDL_close_code.h>
+
+#endif /* SDL_surface_h_ */