Store the surface properties in the reserved pointer of a surface
This prevents us from exposing the properties publicly and allows us to repurpose the pointer later if necessary. Fixes https://github.com/libsdl-org/SDL/issues/8758main
parent
b6a92c113f
commit
d71454da17
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@ -104,11 +104,7 @@ typedef struct SDL_Surface
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int pitch; /**< Read-only */
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int pitch; /**< Read-only */
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void *pixels; /**< Read-write */
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void *pixels; /**< Read-write */
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/** Application data associated with the surface */
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void *reserved; /**< Private */
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union {
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void *reserved; /**< For ABI compatibility only, do not use */
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SDL_PropertiesID props; /**< Read-only */
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};
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/** information needed for surfaces requiring locks */
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/** information needed for surfaces requiring locks */
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int locked; /**< Read-only */
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int locked; /**< Read-only */
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@ -252,23 +252,28 @@ SDL_Surface *SDL_CreateSurfaceFrom(void *pixels, int width, int height, int pitc
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SDL_PropertiesID SDL_GetSurfaceProperties(SDL_Surface *surface)
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SDL_PropertiesID SDL_GetSurfaceProperties(SDL_Surface *surface)
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{
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{
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SDL_PropertiesID props;
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if (!surface) {
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if (!surface) {
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SDL_InvalidParamError("surface");
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SDL_InvalidParamError("surface");
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return 0;
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return 0;
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}
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}
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if (!(surface->flags & SDL_SURFACE_USES_PROPERTIES)) {
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if (surface->flags & SDL_SURFACE_USES_PROPERTIES) {
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props = (SDL_PropertiesID)(uintptr_t)surface->reserved;
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} else {
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if (surface->reserved != NULL) {
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if (surface->reserved != NULL) {
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SDL_SetError("Surface has userdata, incompatible with properties");
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SDL_SetError("Surface has userdata, incompatible with properties");
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return 0;
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return 0;
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}
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}
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surface->props = SDL_CreateProperties();
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props = SDL_CreateProperties();
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if (surface->props) {
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if (props) {
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surface->reserved = (void *)(uintptr_t)props;
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surface->flags |= SDL_SURFACE_USES_PROPERTIES;
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surface->flags |= SDL_SURFACE_USES_PROPERTIES;
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}
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}
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}
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}
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return surface->props;
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return props;
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}
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}
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int SDL_SetSurfacePalette(SDL_Surface *surface, SDL_Palette *palette)
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int SDL_SetSurfacePalette(SDL_Surface *surface, SDL_Palette *palette)
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@ -1570,7 +1575,8 @@ void SDL_DestroySurface(SDL_Surface *surface)
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}
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}
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if (surface->flags & SDL_SURFACE_USES_PROPERTIES) {
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if (surface->flags & SDL_SURFACE_USES_PROPERTIES) {
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SDL_DestroyProperties(surface->props);
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SDL_PropertiesID props = (SDL_PropertiesID)(uintptr_t)surface->reserved;
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SDL_DestroyProperties(props);
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}
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}
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SDL_InvalidateMap(surface->map);
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SDL_InvalidateMap(surface->map);
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