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Fixed comment on multiple BLAS generation

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Pascal Gautron 2022-08-29 15:43:18 +02:00
parent 7b96b9582c
commit 389f8e58ed
1 changed files with 3 additions and 4 deletions
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7
docs/vkrt_tutorial.md.html
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@ -599,10 +599,9 @@ vkCmdBuildAccelerationStructuresKHR(cmdBuf, 1, &buildAs[idx].buildInfo, &buildAs
~~~~ ~~~~
Note the barrier after each call to the build: this is necessary because we are reusing scratch space across builds, Note the barrier after each call to the build: For the sake of simplicity we are reusing scratch space across builds,
so we need to make sure the previous build is finished before starting the next one. We could have used multiple so we need to make sure the previous build is finished before starting the next one.
scratch buffers, but that would have been memory intensive, and the device can only build one BLAS at a time, Ideally, we should have used multiple regions of a scratch buffer so multiple BLAS could be built simultaneously.
so it wouldn't be any faster.
~~~~ C ~~~~ C
// Since the scratch buffer is reused across builds, we need a barrier to ensure one build // Since the scratch buffer is reused across builds, we need a barrier to ensure one build