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4-post thread, highest-engagement NOTimothyLottes thread in the corpus
(42 likes, 5063 views, 2 reposts). Don't search for the ideal
{presentation,graphics,compute} queue - just use queue 0. AMD: render
via compute on queue 0, present on queue 1, decouple for front-buffer
racing. NVIDIA: queue 1 is DMA, queue 2 is compute; queue 0 = gfx +
present, dispatch on queue 2 by default. Tangent: someone complaining
about the bitmap font in Post 1 looking like a captcha.
79 lines
3.1 KiB
JSON
79 lines
3.1 KiB
JSON
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"root_post_id": "2075769880092037309",
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"posts": [
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{
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"post_id": "2075769880092037309",
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"author": "NOTimothyLottes",
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"handle": "NOTimothyLottes",
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"text": "Rethinking Vulkan queue choice. Traditional double-buffered games might do something like the code below. Find the queue that does {presentation,graphics,compute}. First off this seems like a lot of unnecessary work when one could just choose queue 0 and be done with it ...",
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"timestamp": "2026-07-11 02:31:20",
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"media_urls": [
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"https://pbs.twimg.com/media/HM6desTW0AAHA_H?format=png&name=orig"
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},
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{
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"post_id": "2075770634349527454",
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"author": "NOTimothyLottes",
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"handle": "NOTimothyLottes",
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"text": "AMD on Linux (RADV) and Windows. Queue 0 just works. But note both platforms support doing present on queue 1. So on AMD I'm likely going to render via compute on queue 0 [to reduce chance of preemption] and present on queue 1. And have both decoupled (for front buffer rendering)",
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"timestamp": "2026-07-11 02:34:19",
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"media_urls": [
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"https://pbs.twimg.com/media/HM6d5GnWAAAGOmg?format=jpg&name=orig",
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}
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},
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{
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"post_id": "2075771407510773906",
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"author": "NOTimothyLottes",
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"handle": "NOTimothyLottes",
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"text": "NVIDIA is more complex. They put a DMA engine in queue 1 slot, and compute engine in queue 2 slot. Some sometimes queue 2 slot can or cannot do present (varies by driver). So maybe present on 0 (gfx queue), and dispatch on queue 2 by default for NV.",
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"timestamp": "2026-07-11 02:37:24",
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"media_urls": [
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"https://pbs.twimg.com/media/HM6egsMWcAAkjOq?format=jpg&name=orig",
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],
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},
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{
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"post_id": "2075830291499737598",
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"author": "Konrad Kubacki",
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"handle": "konrad_kubacki_",
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"text": "@NOTimothyLottes Am I having a stroke? What is this font? It feels like reading a captcha. Is it only me?",
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"timestamp": "2026-07-11 06:31:23",
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],
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"source_url": "https://x.com/NOTimothyLottes/status/2075769880092037309"
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} |