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Arisotura |
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Big fire melon magical melon girl Level: 55 Posts: 103/875 EXP: 1308935 Next: 5254 Since: 03-28-17 From: France Last post: 36 days ago Last view: 8 days ago |
We might as well dedicate a thread to these. The GPU is a pile of quirks.
Edgemarking behavior at screen edges This is what happens when rendering a fullscreen quad with edgemarking. No idea what's the logic behind that, but it might stem from the scanline cache system. ____________________ Kuribo64 |
Anonymous |
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Member Normal user Level: 8 Posts: 10/12 EXP: 2099 Next: 88 Since: 04-02-17 Last post: 523 days ago Last view: 523 days ago |
This is brought up in a GDC presentation from 2007:
https://archive.org/download/GDC2007Homic/GDC2007-Homic.pdf Audio here(relevant part ~11min in): https://archive.org/details/GDC2007Homic They don't understand why it happens, either. But I thought it might be interesting to hear about game devs stumbling across this issue and their attempts at working around it. |
Arisotura |
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Big fire melon magical melon girl Level: 55 Posts: 106/875 EXP: 1308935 Next: 5254 Since: 03-28-17 From: France Last post: 36 days ago Last view: 8 days ago |
I saw that presentation.
A part of their glitches happens because non-edgemarked polygons overlap the edges. The other part is what my screenshot demonstrates. ____________________ Kuribo64 |
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