[Mesa-dev] Gallium debugging help

[Marek Olšák]

Hi James,

1) Try: GALLIUM_TRACE=~/gallium.trace ./gbmtest

2) Trace is an optional component, so make sure it's built in your
driver. See for example src/gallium/targets/dri-r600/Makefile.am to
know how to add it.

3) The easiest way to debug gallium is to use a debugger.

Marek



On Wed, Sep 18, 2013 at 2:08 AM, James Simmons <jsimmons at infradead.org> wrote:
>
> Hello.
>
>         I'm the main developer from the Openchrome project and we have
> reached the point were work is being started for the Gallium driver for
> VIA hardware. To help develope a stable simple start I decided to go for
> bare bones libgbm support using a gallium backend. So like any start my
> simple libgbm app fails at the start. Well to figure it out I need to
> debug my gallium driver. So I started to read up on how to debug gallium
> and so I attempted to use the trace pipe driver. So the command I used
> was
>
> GALLIUM_TRACE=~/gallium.trace;./gbmtest
>
> but no XML file was generated. What am I doing wrong? How do I properly
> debug? Thanks for your help. Once I get this working I will push to
> master.
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