[HN Gopher] Shader-like holographic effects with CSS ___________________________________________________________________ Shader-like holographic effects with CSS Author : skilled Score : 306 points Date : 2022-07-07 16:53 UTC (6 hours ago) (HTM) web link (robbowen.digital) (TXT) w3m dump (robbowen.digital) | samstave wrote: | This is FN awesome. | | Ill never have use, but I can't wait to see this in the wild. | | One thought: FORCE any site that uses this to not be behind a | cookie paywall ;-) | synu wrote: | Does this not work on mobile? I don't seem to be seeing it on iOS | Chrome. | soperj wrote: | Another Safari fail. | camjohnson26 wrote: | It's basically only visible when scrolling, and yeah I don't | see the effect on mobile. | bawolff wrote: | Seems like the answer should be yes | https://caniuse.com/?search=blend-mode | | I can confirm it works on android | Uehreka wrote: | From the known issues tab: | | > iOS Safari is reported to not support multiple background- | blend-modes | | Since iOS Chrome is really just an iOS Safari webview, that | means it won't work there either. | trafficante wrote: | beebeepka wrote: | Runs fine on Firefox. | tedunangst wrote: | Well, this explains why I couldn't understand why you wouldn't | just do it in photoshop. | theandrewbailey wrote: | Yeah, not having the right browser would make it more... | static. | | If you did it in photoshop, you can't alter the image based | on where it is in the viewport. Doing it in this CSS way, the | image subtly changes as it scrolls past (particularly the | bloom to the right covering someone's head). | paulsmith wrote: | I wonder if you could use this to achieve an animation effect | like some 8- and 16-bit games did with color cycling. eg | http://www.effectgames.com/effect/article-Old_School_Color_C... | aaaaaaaaaaab wrote: | You can't. | dylan604 wrote: | What if your mask/specular layers were made of an SVG that | you then animate the colors within to "cycle"? | aaaaaaaaaaab wrote: | Color cycling works with paletted images. CSS blending | modes work in RGB with a limited set of blend functions. | The closest thing to color cycling is "filter: hue- | rotate(...)", but you can't limit the colors to a | particular subset of the hue wheel, so it's gonna be | useless. | dylan604 wrote: | Right, but the colors within the SVG are what is cycling. | It's not a rasterized image, so you could create a "pixel | map". I'm not saying it's not convoluted as hell, but the | effect [w|c]ould look paletted | aaaaaaaaaaab wrote: | At that point what's the purpose of having a mask image + | blending at all? | thecloud wrote: | not exactly color cycling per se, but you might be able to | achieve a similar animation effect by overlaying an svg | turbulence filter over a mask of the waterfall, like described | here[0] | | unfortunately the dynamic displacement mapping is not very | performant and this technique is hard to pull off on mobile | devices | | [0] https://redstapler.co/realistic-water-effect-svg- | turbulence-... | andix wrote: | It's kind of cool. But I don't like the results. Doesn't look | nice, or fancy. Just odd. | dylan604 wrote: | We all like different things. The thing that impresses me is | getting the result out of CSS only. Now it is out there and | potentially other people can now take the idea and run with it | to potentially make even more interesting ideas. These are just | proof of concepts to get the imagination running on the | potential of being possible. | rchaud wrote: | The article is still very helpful esp. if you've tried to use | mix-blend-mode before to tint photos like how Photoshop does | pretty easily. To have this ability in CSS is a big leap | forward. | fio_ini wrote: | Dude this guy is a god at CSS. Wow thanks for the tips and | tricks! | dylan604 wrote: | And I still have issues getting layouts to flow correctly, and | then this person comes along and does this type of stuff. | Seriously impressive CSS knowledge this one has. | eminence32 wrote: | This is neat, and it makes me more fully realize how complicated | modern CSS engines must be! | a-walker wrote: | That hologram looks real. | MrLeap wrote: | It's a shame filter: custom() died. It would be easier to skip | shader-like and just go right to shader. | rchaud wrote: | Useful article, the visual examples help a lot. As the author | says "why should JS have all the fun?" | theandrewbailey wrote: | Could this be implemented with ::before and ::after pseudo | elements on a parent element? | beebeepka wrote: | Damn, this can't be upvoted enough. I almost never say this but | what an awesome read. Good job, whoever you are. | | CSS doesn't get enough recognition but it really is a very | powerful tool. Yes, performance is an issue but running canvas at | 60 FPS isn't exactly cheap either. Fans will be spun | mirekrusin wrote: | Really nice. | | ps. we'll surely wake up tomorrow to holographically-authentic- | NFTs all over the place! | gilbetron wrote: | Not anything like a shader, really, just standard non-shader | masking and blending. (I mean, you can implement them in a | shader, but that's besides the point). Nothing standard fixed | pipelines haven't been doing for ages. | | Having said that, it is an excellent use of it - well applied, | and the explanation is solid! | gfxgirl wrote: | agreed and honestly really annoying when the wrong terms are | used and then you need to invent new words to distinguish the | actual thing "shaders" from layering effects. | dylan604 wrote: | For once, something I'm actually more than impressed by the | overall effect. I love the fact that someone was familiar enough | with all of the abilities of CSS plus other effects to be able to | pull it off in the confines of CSS. | _the_inflator wrote: | This is a very in-depth and thorough article and fun to play with | the techniques mentioned. Some view modes however, are best | viewed with LSD... ;) | aaaaaaaaaaab wrote: | Someone discovered CSS blend modes! | danuker wrote: | The simple gradients used give it an "artificial" or "color- | overexposed" look. | | Check out perceptually uniform color maps: | | https://colorcet.com/ | junon wrote: | Wow, the rare new CSS trick that actually looks really nice. | Bravo. | bawolff wrote: | This made me nostalgic for that css/edge demo from back in the | day [1]. This demo seems like a similar idea as the css/edge demo | just taken much further. | | [1] https://meyerweb.com/eric/css/edge/complexspiral/glassy.html ___________________________________________________________________ (page generated 2022-07-07 23:00 UTC)