我尝试用SDL2加载图像,我已经用IMG_INIT_PNG初始化了SDL_Image|IMG_INIT_JPG,我尝试打开这个PNG如下:
typedef std::unique_ptr<SDL_Surface, SDLDeleter> SDL_Surfacep;
SDL_Surfacep LoadImageFromFile(std::string_view mime_type, std::string const& path, const uint8_t * data, uint32_t length)
{
SDL_RWops * rwOps;
if(data == nullptr)
rwOps = (SDL_RWFromFile(path.c_str(), "rb"));
else
rwOps = (SDL_RWFromConstMem(data, length));
if(rwOps == nullptr)
throw std::runtime_error("failed to open data stream...");
SDL_Surfacep image(IMG_Load_RW(rwOps, 1));
if(image == nullptr || image->format == nullptr)
{
if(data == nullptr)
throw std::runtime_error(cc("failed to load image ", path, " of type ", mime_type, ",", SDL_GetError()));
else
throw std::runtime_error(cc("failed to load ", mime_type, " file in container ", path, ",", SDL_GetError()));
return {};
}
// SIGSEV
int format = image->format->format;
return image;
}
程序崩溃的地方我已经把SIGSEV注解与分段错误,然后根据调试器的图像结构有这样的内容:
除了格式和像素是坏指针,宽度和间距也似乎是错误的。我不知道如何修复这一点在这一点上。
1条答案
按热度按时间toiithl61#
这是因为我复制/粘贴到头文件中的代码包含一个#pragma push命令;这完全中断了图书馆的呼叫。