[re_renderer] Uniform buffer utility using CpuWriteGpuReadBelt
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teh-cmc
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🔺 re_renderer
teh-cmc
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Feb 26, 2023
| /// But this leads to more unsafe code, harder to avoid holes in write combined memory access | ||
| /// and potentially undefined values in the padding bytes on GPU. | ||
| const CHECK: () = assert!( | ||
| std::mem::align_of::<T>() >= 256, |
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I'd expect an == here?
Suggested change
| std::mem::align_of::<T>() >= 256, | |
| std::mem::align_of::<T>() == 256, |
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Higher alignment is unlikely but absolutely allowed. If something is aligned to 512 we're okay with that as well (but I really hope nothing is!)
Wumpf
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emilk
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* utility function for uniform buffer from struct * Uniform buffers are now compile time forced to be 256 bytes aligned * CpuWriteGpuReadBelt no longer takes mutable buffer pool * Renderers and frame_global_command_encoder are now behind locks --------- Co-authored-by: Clement Rey <cr.rey.clement@gmail.com>
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Used for all uniform buffers except meshes - need some more plumbing there, will be done in a follow-up Pr!
This PR introduces a new utility for easy uniform buffer creation & filling. It enforces correct padding - see long comment for details :)
Removes quite a few landmines and makes code in
Renderers shorter!Solves a sizeable chunk of #1398, figured out some
RenderContextshare issues along the wayChecklist
CHANGELOG.md(if this is a big enough change to warrant it)