<story><title>Trying to get past the 500 nits limit of the MacBook Pro (and failing)</title><url>https://alinpanaitiu.com/blog/over-500nits-failed/</url></story><parent_chain><item><author>exsf0859</author><text>It&amp;#x27;s easy to write an app that displays arbitrary graphics at 1600 nits on the MacBook Pro. You just have to use the Metal API, an &amp;quot;extended&amp;quot; color space, and a Float colorPixelFormat.&lt;p&gt;I&amp;#x27;m not sure that this blog post author is trying to accomplish, possibly they are trying to use some other API besides Metal?</text></item></parent_chain><comment><author>alin23</author><text>I’m not trying to draw HDR content. I want to increase to overall UI brightness (basically, make the brightness of where backlight LEDs go past the software defined limit)&lt;p&gt;I’m testing Apple’s claim of &lt;i&gt;1000 nits sustained brightness&lt;/i&gt; which led many people to believe that they can finally use their laptop in direct sunlight without squinting at the screen.&lt;p&gt;I’m aware of thermal limitations and that even &lt;i&gt;sustained&lt;/i&gt; might not mean “whole screen at 1000 nits for 8 hours”. But it would be nice to be able to use 1 hour of my work time to work in the park outside my apartment with a bright enough screen for that time.&lt;p&gt;The system has thermal capping implemented from what I saw in the CoreBrightness framework, so it should be safe as long as the system can detect that LEDs are starting to overheat and lower the brightness automatically.</text></comment>
<story><title>Trying to get past the 500 nits limit of the MacBook Pro (and failing)</title><url>https://alinpanaitiu.com/blog/over-500nits-failed/</url></story><parent_chain><item><author>exsf0859</author><text>It&amp;#x27;s easy to write an app that displays arbitrary graphics at 1600 nits on the MacBook Pro. You just have to use the Metal API, an &amp;quot;extended&amp;quot; color space, and a Float colorPixelFormat.&lt;p&gt;I&amp;#x27;m not sure that this blog post author is trying to accomplish, possibly they are trying to use some other API besides Metal?</text></item></parent_chain><comment><author>roughly</author><text>The author is the author of lunar - &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;lunar.fyi&amp;#x2F;&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;lunar.fyi&amp;#x2F;&lt;/a&gt; - an app for controlling screen brightness on external (and internal) screens on the Mac. He is trying to force the system to brighten the entire screen to the levels it will brighten light spots in an HDR video.</text></comment>