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GPU panic in GDeflateDemo /decompressgpu

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#52 7 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
45/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Stale
Tech stack
cpp
Domain
computer-graphics

Research direction

Reproduce the issue with GDeflateDemo using the supplied output_003.zip blob: run /compress and then /decompressgpu as described. Focus on the reported 32K block [1507282 .. 1540049) and the reference shader's memory accesses; done means the blob decompresses without a GPU panic or out-of-bounds access.

Written by the indexing model from the issue text.

Description

I'm trying to use the GDeflate reference shader implementation but i'm running into gpu panics because the shader is accessing out-of-bounds memory.

The blob im using is inside this zip.
output_003.zip

  1. Clone repo and make it buildable.
  2. GDeflateDemo /compress "output_003.bc6" "myfolder/"
  3. GDeflateDemo /decompressgpu "myfolder/output_003.bc6.compressed" "myfolder/output_003.bc6.uncompressed"

If i cut the blob up in smaller 32K blocks, the panic happens on the [1507282 .. 1540049) block (in byte indices)

Dominant language
C++
Stars
897
Forks
111
Avg merge
13h 58m
Merged PRs (30d)
12

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