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Merge pull request #13 from stenzek/patch-1 

Correct polyline terminator documentation in GPU
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Nicolas Noble 2021-01-27 20:28:52 -08:00 committed by GitHub
parent a0c1fc70fe 281ad87972
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docs/graphicsprocessingunitgpu.md
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@ -230,10 +230,10 @@ Color xxBBGGRR - optional, only present for gouraud shading
Vertex YYYYXXXX - required, two signed 16 bits values
```
When the polyline mode is active, then there is no fixed amount of words
to be sent. The last word will have a magic value, which will usually be
55555555, but also sometimes 50005000. Note that the magic value can then
either be for the color word, or the vertex word.
When polyline mode is active, at least two vertices must be sent to the GPU.
The vertex list is terminated by the bits 12-15 and 28-31 equaling `0x5`, or
`(word & 0xF000F000) == 0x50005000`. The terminator value occurs on the first
word of the vertex (i.e. the color word if it's a gouraud shaded).
#### Note