我已经设置了一个SDL2渲染器,我有两个纹理,我试图在屏幕上绘制。当我单独这样做时,它的工作正常。但是当我把它们两个画在一起时,纹理就会闪烁。这是后台缓冲区的问题吗?还有什么我需要做的才能启用双缓冲区吗?
这就是我正在做的事情:
Renderer::m_Renderer = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
if (Renderer::m_Renderer == nullptr){
SDL_DestroyWindow(win);
std::cout << "SDL_CreateRenderer Error: " << SDL_GetError() << std::endl;
SDL_Quit();
}
while (!m_bQuit) {
m_tCurrentFrameTime = clock();
// Input
while (SDL_PollEvent(&m_Event)) {
switch (m_Event.type) {
case SDL_QUIT:
m_bQuit = true;
break;
default:
break;
}
}
// Update
SDL_RenderCopyEx(m_Renderer, m_tBackgroundTexture, NULL, &m_rRect, m_fRotation, NULL, SDL_FLIP_NONE);
SDL_RenderPresent(Renderer::getRenderer());
SDL_RenderCopyEx(m_Renderer, m_tCharacterTexture, NULL, &m_rRect, m_fRotation, NULL, SDL_FLIP_NONE);
SDL_RenderPresent(m_Renderer);
// Clear screen
SDL_RenderClear(m_Renderer);
}
答案 0 :(得分:3)
渲染两个纹理然后 <div>
,而不是每个SDL_RenderPresent()
。
所以:
SDL_RenderPresent()