Allow glyphs to overflow#136
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dimitry-ishenko wants to merge 3 commits intoAetf:mainfrom
dimitry-ishenko:overflow
Closed
Allow glyphs to overflow#136dimitry-ishenko wants to merge 3 commits intoAetf:mainfrom dimitry-ishenko:overflow
dimitry-ishenko wants to merge 3 commits intoAetf:mainfrom
dimitry-ishenko:overflow
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This was referenced Sep 22, 2025
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@kdj0c yeah sure. This was just a POC in case someone would be interested. |
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This is a proof of concept.
The idea is that we clear the surface before each render, and then blend glyph buffers with the existing surface (instead of overwriting). The current POC only works in DRM mode without hwaccel. By "works" I mean it does render over-spilling glyphs fully without chopping, but it's so slow it feels like a 1980s terminal.
Hopefully someone more familiar with the code can implement a proper solution. One idea I had was to keep a shadow buffer to prevent repeated read from the video memory, which cause the extreme slowness.