SDL 2.0视网膜Mac [英] SDL 2.0 retina mac

问题描述

我一直在使用SDL 2.0，但是在搜索之后，我没有在网上找到有关如何支持视网膜Mac的任何信息.使用以下代码创建窗口时.

I have been playing around with SDL 2.0 but after searching I haven't found anything online about how to support retina macs. When creating a window using the following code.

gWindow = SDL_CreateWindow("SDL Tutorial", SDL_WINDOWPOS_UNDEFINED,
          SDL_WINDOWPOS_UNDEFINED, 500, 500, SDL_WINDOW_SHOWN);

它将创建一个实际尺寸为1000 * 1000的窗口.这并不是一个真正的问题，因为应该使用hidpi屏幕来使应用程序正常工作.但是，在加载图像时，我似乎找不到找到加载视网膜屏幕尺寸2倍的图像的方法，并且图像始终看起来很模糊.

It creates a window that has an actual size of 1000 * 1000. This isn't really an issue because it's how apps are supposed to work using a hidpi screen. However, when loading images I can't seem to find a way to load images that are 2x as big for retina screens and my images always look blurry.

推荐答案

当前版本的SDL2支持视网膜.

Current versions of SDL2 have support for retina.

要创建视网膜窗口，请将标志SDL_WINDOW_ALLOW_HIGHDPI传递到SDL_CreateWindow().

To create a retina window, pass a flag SDL_WINDOW_ALLOW_HIGHDPI into SDL_CreateWindow().

在调整大小事件之后，您可以使用API​​调用SDL_GL_GetDrawableSize()检查实际的缓冲区分辨率.

After a resize event, you can check the actual buffer resolution with the API call SDL_GL_GetDrawableSize().

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