From 76e2af3dd4ca737a2bf10deca450ba4d528a2c92 Mon Sep 17 00:00:00 2001 From: Rhys Kidd Date: Sat, 13 Feb 2016 16:03:02 -0500 Subject: [PATCH] docs: Document VC4_DEBUG envvar Signed-off-by: Rhys Kidd Signed-off-by: Eric Anholt --- docs/envvars.html | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/docs/envvars.html b/docs/envvars.html index 8c4597c9c76..4eff7065df0 100644 --- a/docs/envvars.html +++ b/docs/envvars.html @@ -253,6 +253,25 @@ for details. +

VC4 driver environment variables

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  • VC4_DEBUG - a comma-separated list of named flags, which do various things: +
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    • cl - dump command list during creation
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    • qpu - dump generated QPU instructions
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    • qir - dump QPU IR during program compile
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    • nir - dump NIR during program compile
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    • tgsi - dump TGSI during program compile
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    • shaderdb - dump program compile information for shader-db analysis
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    • perf - print during performance-related events
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    • norast - skip actual hardware execution of commands
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    • always_flush - flush after each draw call
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    • always_sync - wait for finish after each flush
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    • dump - write a GPU command stream trace file (VC4 simulator only)
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Other Gallium drivers have their own environment variables. These may change frequently so the source code should be consulted for details. -- 2.30.2