SDL2可以将渲染器中的内容保存下来吗？

@magic轩3 @上网吃苹果 @QingFLS @twtfcu3 @TTHHR @DXKite

保存为bmp?

//读取像素的数据，
int SDL_RenderReadPixels(SDL_Renderer* renderer, const SDL_Rect* rect, Uint32 format, void* pixels, int pitch)
//用这些数据创建SDL_Surface
SDL_Surface* SDL_CreateRGBSurfaceFrom(void* pixels, int width, int height, int depth, int pitch, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
//保存
int SDL_SaveBMP(SDL_Surface* surface, const char* file)

回复一周休七日 :你请楼上帮你写个例子吧，我也不会

不用sdl的路过……

SDL_Surface* ScreenShot(SDL_Window*w,SDL_Renderer*r,SDL_Rect*rect)
{
SDL_Rect real_rect;
Uint32 format;
int bpp;
Uint32 rmask,gmask,bmask,amask;
char*pixels;
int pitch;
if ((!w) || (!r)) return NULL;
if (!rect)
{
real_rect.x=0;
real_rect.y=0;
SDL_GetWindowSize(w,&real_rect.w,&real_rect.h);
}
else real_rect=*rect;
format=SDL_GetWindowPixelFormat(w);
SDL_PixelFormatEnumToMasks(format,&bpp,&rmask,&gmask,&bmask,&amask);
pitch=SDL_BYTESPERPIXEL(format)*(real_rect.w);
pixels=(char*)malloc(pitch*(real_rect.h)*sizeof (char));
SDL_RenderReadPixels(r,&real_rect,format,(void*)pixels,pitch);
return SDL_CreateRGBSurfaceFrom((void*)pixels,real_rect.w,real_rect.h,bpp,pitch,rmask,gmask,bmask,amask);
}
//拿去，不用谢

拿走，谢谢

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