Deutsch English Français Italiano |
<v8ltr4$3it4o$1@dont-email.me> View for Bookmarking (what is this?) Look up another Usenet article |
Path: ...!news.nobody.at!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> Newsgroups: comp.arch Subject: Re: Misc: Applications of small floating point formats. Date: Sat, 3 Aug 2024 11:44:51 -0700 Organization: A noiseless patient Spider Lines: 28 Message-ID: <v8ltr4$3it4o$1@dont-email.me> References: <v8ehgr$1q8sr$1@dont-email.me> <v8eloq$1qs1a$1@dont-email.me> <v8flo3$23t8l$1@dont-email.me> <v8h4iv$2e5g0$4@dont-email.me> <v8h8hv$2epjk$1@dont-email.me> <v8hg7p$2k3mm$1@dont-email.me> <v8hok5$2lec3$1@dont-email.me> <v8hruh$2m1tt$1@dont-email.me> <v8hv6d$2mklf$1@dont-email.me> <v8i709$2o7ho$1@dont-email.me> <v8jsbj$32llf$3@dont-email.me> <v8jt09$32d0h$1@dont-email.me> <v8k1gu$33ib3$4@dont-email.me> <v8k3qd$37juv$2@dont-email.me> <v8kfed$39ic7$3@dont-email.me> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Sat, 03 Aug 2024 20:44:53 +0200 (CEST) Injection-Info: dont-email.me; posting-host="c5d5c7fe7b787c73b28f56e08a59c030"; logging-data="3765400"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19vqXjIW47DO5spXQhvtbHjpZAjn8kw4nU=" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:4Y2uzRXHywtTXm/jJcDtb98AeUc= Content-Language: en-US In-Reply-To: <v8kfed$39ic7$3@dont-email.me> Bytes: 2554 On 8/2/2024 10:33 PM, Lawrence D'Oliveiro wrote: > On Fri, 2 Aug 2024 21:14:33 -0500, BGB wrote: > >> On 8/2/2024 8:35 PM, Lawrence D'Oliveiro wrote: >> >>> On Fri, 2 Aug 2024 17:18:17 -0700, Chris M. Thomasson wrote: >>> >>>> Taking a screen shot? glReadPixels is okay, right? >>> >>> That means grabbing the whole screen, regardless of what else it might >>> be showing, assuming your window it not occluded, and it further >>> assumes you have a screen to grab from. This kind of precludes running >>> the renderer as a batch, background process. >> >> The glReadPixels call doesn't grab an image from the OS desktop, but >> rather from one of the internal framebuffers associated with the OpenGL >> context. > > Still lousy performance, though. That is simply not considered a serious > usage scenario for OpenGL. And not for any other on-screen 3D API, as far > as I’m aware. Afaict, it's fine for taking a snapshot. I used it to create the following animation as a series of frames: Fractal Boom Box: https://youtu.be/n13GHyYEfLA