我很高兴WP 4.4。附带内置响应图像功能。但我对它不太满意。

我在我的functions.php:

add_image_size(\'post-thumbnails\', 600, 600, true);
add_image_size(\'news-large\', 1024, false);
add_image_size(\'news-small\', 500, false);
add_image_size(\'3-col\', 500, 375, true);
add_image_size(\'presscutting\', 600, 850, true);
add_image_size(\'medium-large\', 768, false); // just added today for devices support
add_image_size(\'full-feature-image\', 2000, false);
add_image_size(\'gallery-image\', 800, 600, true);

如我所想，未裁剪的图像（裁剪设置为false) 已添加到srcset. 在前端输出图像，如（添加换行符以提高可读性）：

<img width="2000" height="1335"
src="http://mywebsite.com/cms/wp-content/uploads/2015/03/image-2000x1335.jpg" 
class="attachment-full-feature-image size-full-feature-image"
alt="asdf"
srcset="
http://mywebsite.com/cms/wp-content/uploads/2015/03/image-300x200.jpg 300w, 
http://mywebsite.com/cms/wp-content/uploads/2015/03/image-768x513.jpg 768w, 
http://mywebsite.com/cms/wp-content/uploads/2015/03/image-1024x683.jpg 1024w, 
http://mywebsite.com/cms/wp-content/uploads/2015/03/image-500x334.jpg 500w" 
sizes="(max-width: 2000px) 100vw, 2000px">

但现在我的问题是：在我的屏幕上，只显示指定为1024px宽度的图像，尽管它的屏幕分辨率为1600px。所以所有的图像看起来都很模糊。

How can i make WP and/or my browser use the 2kpx image instead?我是否需要为1280px、1440px、1600px、1968px添加新的图像大小？或者有没有更简单的方法告诉WP/浏览器使用较大的图像，而不是显示模糊且太小的版本？

add_filter(\'max_srcset_image_width\', function($max_srcset_image_width, $size_array){
    return 2000;
}, 10, 2);

add_image_size(\'news-large\', 1024, 0, false);

function filter_max_srcset( $max_width, $size_array ) {
    if ( $size_array[0] === 1800 ) {
        $max_width = 1800;
    }
    return $max_width;
}
add_filter( \'max_srcset_image_width\', \'filter_max_srcset\', 10, 2 );