mesa/src/gallium/tools/trace
Emil Velikov c79c54ae34 gallium/tools: use correct shebang for python scripts
These are python2 scripts and the generic "python" may point to
python3.

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
2017-03-10 14:12:47 +00:00
..
diff_state.py gallium/tools: use correct shebang for python scripts 2017-03-10 14:12:47 +00:00
dump.py gallium/tools: use correct shebang for python scripts 2017-03-10 14:12:47 +00:00
dump_state.py gallium/tools: use correct shebang for python scripts 2017-03-10 14:12:47 +00:00
format.py gallium/tools: use correct shebang for python scripts 2017-03-10 14:12:47 +00:00
model.py gallium/tools: use correct shebang for python scripts 2017-03-10 14:12:47 +00:00
parse.py gallium/tools: use correct shebang for python scripts 2017-03-10 14:12:47 +00:00
README.txt
TODO.txt
tracediff.sh gallium/tools: do not hardcode bash location 2017-03-10 14:12:47 +00:00

These directory contains tools for manipulating traces produced by the trace
pipe driver.


Most debug builds of state trackers already load the trace driver by default.
To produce a trace do

  export GALLIUM_TRACE=foo.gtrace

and run the application.  You can choose any name, but the .gtrace is
recommended to avoid confusion with the .trace produced by apitrace.


You can dump a trace by doing

  ./dump.py foo.gtrace | less


You can dump a JSON file describing the static state at any given draw call
(e.g., 12345) by
doing

  ./dump_state.py -v -c 12345 foo.gtrace > foo.json

or by specifying the n-th (e.g, 1st) draw call by doing

  ./dump_state.py -v -d 1 foo.gtrace > foo.json

The state is derived from the call sequence in the trace file, so no dynamic
(eg. rendered textures) is included.


You can compare two JSON files by doing

  ./diff_state.py foo.json boo.json | less

If you're investigating a regression in a state tracker, you can obtain a good
and bad trace, dump respective state in JSON, and then compare the states to
identify the problem.