Could we change the title to the actual title of the article? I was, let's say, really scared when tapping the link with the current title.
I fixed it. Thanks.
Well played
Rendering my (billiard) balls in a fragment shader
31–40 of 88 posts
Re: Rendering my (billiard) balls in a fragment shader
#32This reminds me of the same rendering technique described in Hustle Kings for the PS3. There was a write up done, however shader code was not included.
https://web.archive.org/web/20130913033312/http://www.voofoo...
Re: Rendering my (billiard) balls in a fragment shader
#33Good timing - I was procrastinating on HN instead of trying to fix my phucked-up phong; you've helped me do both.
Re: Rendering my (billiard) balls in a fragment shader
#34I'm just getting my feet wet with shaders myself. Could this fragment shader be used in a "real" 3D game? At the moment, the sphere is orthographicly projected onto the screen so the sphere will always appear as a circle rather than an ellipse. How easy would it be to use this shader in place of a spherical mesh as you might find in a typical geometry based 3D render? I.e. could you use the same technique and render…
It could be used as a sprite that looks like real geometry with some tweaking.
Re: Rendering my (billiard) balls in a fragment shader
#35I happened to notice that PI is #define'd to 3.1415926538, which isn't the correctly rounded off value of 3.14159265358... Seems like they missed a '5'.
That’s a little bit more accuracy than what is needed for this post, but good catch :-)
https://www.jpl.nasa.gov/edu/news/2016/3/16/how-many-decimal...
Re: Rendering my (billiard) balls in a fragment shader
#36I happened to notice that PI is #define'd to 3.1415926538, which isn't the correctly rounded off value of 3.14159265358... Seems like they missed a '5'.
I'm surprised you'd have to define pi in a fragment shader at all. Surely such a commonly used constant would be defined in the language/headers already?
Re: Rendering my (billiard) balls in a fragment shader
#37Fyi.
"Rendering my balls" says something very different to "rendering balls".
Although the hair would be impressive if you managed to do it.
(Testicles btw)
Re: Rendering my (billiard) balls in a fragment shader
#38Fyi. "Rendering my balls" says something very different to "rendering balls". Although the hair would be impressive if you managed to do it. (Testicles btw)
I believe they titled it that way on purpose.
Re: Rendering my (billiard) balls in a fragment shader
#39This reminds me of the same rendering technique described in Hustle Kings for the PS3. There was a write up done, however shader code was not included. https://web.archive.org/web/20130913033312/http://www.voofoo...
That's very interesting. Thank you for the link. From what I read and see in the images, I gather he's done the same thing I have, as you guessed as well. Obviously he's going much further. The author is using a subtle bump map (simulating balls scratches and imperfections), a reflection map with a gradient and indecent angle, what looks to be a faux sub surface scattering effect.
Also he is placing his balls in a 3D environment with nice shadows that really help to sell the illusion.
That's a good find and an interesting read. Thank you.
Re: Rendering my (billiard) balls in a fragment shader
#40From the HN guidelines: please use the original title, unless it is misleading or linkbait; don't editorialize. The correct title is Rendering Pool Balls , not "Rendering my balls in a fragment shader".
Well that backfired on you.