Question

我一直试图让PNG图像出现在我的SDL窗口的屏幕上。我正在使用Eclipse CDT。 SDL.h和SDL_image.h似乎都已正确链接，因为函数会在编译器上弹出颜色。然而，当我运行我的代码时，字面上没有任何反应。编译器没有错误，没有注释，没有。窗口不会出现。如果有人能帮我解决这个问题，我真的很感激。

此外，SDL之前曾在我的计算机上工作过（不使用SDL_image） - 我在其中运行了一个非常好的粒子模拟。

我的代码：

#include <iostream>
#include "SDL.h"
#include "SDL_image.h"

using namespace std;

SDL_Window *m_window; //Window upon which the game will be displayed.
SDL_Renderer *m_renderer; //Renderer used to draw the objects on the window.
SDL_Texture *playerTex;

int SCREEN_WIDTH = 600;
int SCREEN_HEIGHT = 600;

int main(int argc, char* args[]) {
    if (SDL_Init(SDL_INIT_VIDEO) < 0) {
        cout << "Video init failed" << endl;
        return 1;
    }

    //Creates the actual SDL-window and stores it in the m_window variable.
    m_window = SDL_CreateWindow("Marko Beocanin SDD Project",
    SDL_WINDOWPOS_UNDEFINED,
    SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT,
            SDL_WINDOW_FULLSCREEN);

    //Error-checking method that determines if SDL could not create a window - returns false if unsuccessful.
    if (m_window == NULL) {
        cout << "Window Creation failed" << endl;

        SDL_Quit();
        IMG_Quit();
        return 2;
    }

    //Creates an SDL-Renderer: a tool used to actually draw objects on the Window
    m_renderer = SDL_CreateRenderer(m_window, -1, 0);

    //Error-checking method that determines if SDL could not create a renderer - returns false if unsuccessful.
    if (m_renderer == NULL) {
        cout << "Renderer creation failed." << endl;
        SDL_DestroyWindow(m_window);
        SDL_Quit();
        IMG_Quit();
        return 3;
    }

    SDL_Surface *tmpSurface = IMG_Load("img.png");
    playerTex = SDL_CreateTextureFromSurface(m_renderer, tmpSurface);
    SDL_FreeSurface(tmpSurface);

    SDL_RenderClear(m_renderer);
    SDL_RenderCopy(m_renderer, playerTex, NULL, NULL);
    SDL_RenderPresent(m_renderer);

    SDL_Delay(2000);
    SDL_DestroyWindow(m_window);
    SDL_Quit();
    IMG_Quit();


    return 0;
}

Answer 1

我遇到的问题是因为我使用了错误的SDL_image库 - 我使用的是x64而不是x86，这意味着它本身并没有出错，只是没有正常工作！

SDL和SDL_image程序在Eclipse中什么都不做

1 个答案: