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Portal 2 Gel #8

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opened 2022-03-05 14:15:21 +00:00 by mars · 2 comments
mars commented 2022-03-05 14:15:21 +00:00
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a really cool effect i remember from Portal 2 was the look of the gels. i wanna learn how the gels were rendered, implement our own gel rendering in cyborg, and tinker with it to get cool new effects.

a really cool effect i remember from Portal 2 was the look of the gels. i wanna learn how the gels were rendered, implement our own gel rendering in cyborg, and tinker with it to get cool new effects.
mars commented 2022-03-05 17:41:10 +00:00
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i found a slideshow by Valve about how they did water rendering, emancipation grill rendering, and gel splatter rendering in Portal 2, but not about how they drew the gel liquid itself:
https://cdn.cloudflare.steamstatic.com/apps/valve/2011/gdc_2011_grimes_nonstandard_textures.pdf

i found a slideshow by Valve about how they did water rendering, emancipation grill rendering, and gel *splatter* rendering in Portal 2, but not about how they drew the gel liquid itself: https://cdn.cloudflare.steamstatic.com/apps/valve/2011/gdc_2011_grimes_nonstandard_textures.pdf
robotcritter commented 2022-03-05 18:16:14 +00:00
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I did some digging and it looks like Valve brought on Ilya Rosenberg to implement his real-time isosurface rendering technique (see: p35-rosenberg.pdf) in Source, which is what they used for the gel metaballs in Portal 2. I've also attached a contemporary paper on real-time isosurface fluid rendering here that references Rosenberg's paper (SPHLiquidRendering.pdf)

I did some digging and it looks like Valve brought on Ilya Rosenberg to implement his real-time isosurface rendering technique (see: p35-rosenberg.pdf) in Source, which is what they used for the gel metaballs in Portal 2. I've also attached a contemporary paper on real-time isosurface fluid rendering here that references Rosenberg's paper (SPHLiquidRendering.pdf)
p35-rosenberg.pdf
3.3 MiB
SPHLiquidRendering.pdf
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