相关疑难解决方法(0)

我从SDL2开始,在尝试理解SDL_Renderer是什么时遇到了一些麻烦.

它是什么？它有什么作用？SDL_Renderer,SDL_Window,SDL_Surface和SDL_Texture之间有什么区别？它们是如何相关的？

在尝试理解这个介绍性代码时,我遇到了这个问题:

#include <iostream>
#include <SDL2/SDL.h>

int main()
{
    /* Starting SDL */
    if (SDL_Init(SDL_INIT_EVERYTHING) != 0) {
        std::cout << "SDL_Init Error: " << SDL_GetError() << std::endl;
        return 1;
    }

    /* Create a Window */
    SDL_Window *window = SDL_CreateWindow("Hello World!", 100, 100, 640, 480, SDL_WINDOW_SHOWN);
    if (window == nullptr) {
        std::cout << "SDL_CreateWindow Error: " << SDL_GetError() << std::endl;
        return 1;
    }

    /* Create a Render */
    SDL_Renderer *render = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
    if (render == nullptr) …