[Mesa-dev] [PATCH 00/20] Auto-generate pack/unpack functions

Samuel Iglesias Gonsálvez siglesias at igalia.com
Wed Nov 19 01:11:20 PST 2014


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On 19/11/14 09:25, Iago Toral wrote:
> On Tue, 2014-11-18 at 13:41 -0800, Jason Ekstrand wrote:
>> Iago,
>>
>> Most of this looks pretty good to me.  The one primary concern I have
>> is in the handling of integer formats.  I made the comment in a couple
>> of patches, but I'll make it in general here.  In a lot of the code,
>> when you convert from integer formats to float, you treat them as if
>> they are normalized.  Can you explain why you are doing this?  It
>> seems very wrong to me.
> 
> Right, I have been discussing this with Samuel and it does look wrong.
> He will change the code and run a new piglit run to verify the changes.
> 

As Iago said, I'm going to do some changes and test them. After that I
will reply to the mailing list.

>>
>> One other issue is that I couldn't actually get it to compile.  This
>> is probably due to the fact that I always build out-of-tree, so
>> sourcedir and builddir are not the same.  Not really sure what's going
>> on there.
> 
> Mmm... that's weird. I think I remember seeing a patch that added a new
> file and could be the source of that issue. We will look into it.
> 

I confirmed that the out-of-tree compilation error is because of the
autogeneration of format_pack.c and format_unpack.c files. I'm going to
fix it.

Thanks!

Sam

>>
>> Other than that, It's looking pretty good.  I'll try and get to
>> reviewing your second patch series tomorrow.  Since my R-B obviously
>> doesn't mean much on the code I wrote I'll try and dig up a second
>> reviewer as well.
> 
> Yes, that makes sense.
> Thanks for looking into these patches so fast!
> 
> Iago
> 
>> --Jason
>>
>>
>> On Tue, Nov 18, 2014 at 12:43 AM, Iago Toral Quiroga
>> <itoral at igalia.com> wrote:
>>         This is the fist of two series of patches to address:
>>         https://bugs.freedesktop.org/show_bug.cgi?id=84566
>>         
>>         The idea is that we have a lot of format conversion code
>>         scattered through
>>         different files in the repository, a lot of that is
>>         redundant / duplicated,
>>         so this intends to address that issue.
>>         
>>         The goal of this first series is to address auto-generation of
>>         our pack/unpack
>>         functions (format_pack.c and format_unpack.c). Currently, we
>>         have a ton of
>>         hand-coded pack/unpack functions for lots of formats, but we
>>         can auto-generate
>>         most of that code instead, so this series handles this.
>>         
>>         This is based on initial work by Jason Ekstrand.
>>         
>>         Tested on i965, classic swrast and gallium (radeon, nouveau,
>>         llvmpipe) without
>>         regressions.
>>         
>>         For software drivers we worked with a trimmed set of piglit
>>         tests (related to
>>         format conversion), ~5700 tests selected with the following
>>         filter:
>>         
>>         -t format -t color -t tex -t image -t swizzle -t clamp -t rgb
>>         -t lum -t pix
>>         -t fbo -t frame
>>         
>>         Summary of the patches:
>>          * Patches 1-7 are general fixes to the current code that were
>>         found while
>>            working on this.
>>          * Patches 8-16 implement auto-generation of pack/unpack
>>         functions.
>>          * Patches 17-20 make use of the auto-generated pack/unpack
>>         functions in
>>            various places to simplify the current code.
>>         
>>         Notice that some of the fixes in patches 1-7 will become
>>         obsolete as soon as
>>         we auto-generate the pack/unpack functions, but we thought it
>>         would make sense
>>         to keep them in the patch set anyway since we started from
>>         that base and they
>>         should be correct fixes to the currently existing code.
>>         
>>         Iago Toral Quiroga (1):
>>           swrast: Remove unused variable.
>>         
>>         Jason Ekstrand (9):
>>           mesa/format_utils: Fix a bug in one of the format helper
>>         functions
>>           mesa: Fix packing/unpacking of MESA_FORMAT_R5G6B5_UNORM
>>           mesa/colormac: Remove an unused macro
>>           mesa: Fix A1R5G5B5 packing/unpacking
>>           mesa/format_utils: Prefix and expose the conversion helper
>>         functions
>>           mesa: Add a concept of an array format
>>           mesa: Add a _mesa_is_format_color_format helper
>>           mesa: Autogenerate most of format_pack.c
>>           mesa: Autogenerate format_unpack.c
>>         
>>         Samuel Iglesias Gonsalvez (10):
>>           mesa: Fix get_texbuffer_format().
>>           mesa: Fix _mesa_swizzle_and_convert integer conversions to
>>         clamp
>>             properly
>>           mesa: Add _mesa_pack_uint_rgba_row() format conversion
>>         function
>>           mesa: Add non-normalized formats support for ubyte packing
>>         functions
>>           mesa/format_pack: Add _mesa_pack_int_rgba_row()
>>           mesa/formats: add new mesa formats and their pack/unpack
>>         functions.
>>           mesa: use format conversion functions in swrast
>>           mesa/pack: use autogenerated format_pack functions
>>           mesa/main/pack_tmp.h: Add float conversion support
>>           mesa/pack: refactor _mesa_pack_rgba_span_float()
>>         
>>          src/mesa/Makefile.am               |   18 +
>>          src/mesa/Makefile.sources          |    4 +-
>>          src/mesa/main/colormac.h           |    3 -
>>          src/mesa/main/format_convert.py    |   71 +
>>          src/mesa/main/format_info.py       |   41 +
>>          src/mesa/main/format_pack.c        | 2994
>>         ------------------------
>>          src/mesa/main/format_pack.c.mako   | 1147 ++++++++++
>>          src/mesa/main/format_pack.h        |    6 +
>>          src/mesa/main/format_unpack.c      | 4400
>>         ------------------------------------
>>          src/mesa/main/format_unpack.c.mako |  914 ++++++++
>>          src/mesa/main/format_utils.c       |  248 +-
>>          src/mesa/main/format_utils.h       |  105 +
>>          src/mesa/main/formats.c            |  193 +-
>>          src/mesa/main/formats.csv          |   13 +
>>          src/mesa/main/formats.h            |   73 +
>>          src/mesa/main/pack.c               | 2111 +++--------------
>>          src/mesa/main/pack_tmp.h           |   76 +-
>>          src/mesa/main/run_mako.py          |    7 +
>>          src/mesa/main/teximage.c           |    4 +-
>>          src/mesa/main/texstore.c           |    2 +-
>>          src/mesa/swrast/s_drawpix.c        |    3 -
>>          src/mesa/swrast/s_texfetch.c       |   13 +
>>          src/mesa/swrast/s_texfetch_tmp.h   | 1359 +----------
>>          23 files changed, 3222 insertions(+), 10583 deletions(-)
>>          create mode 100644 src/mesa/main/format_convert.py
>>          delete mode 100644 src/mesa/main/format_pack.c
>>          create mode 100644 src/mesa/main/format_pack.c.mako
>>          delete mode 100644 src/mesa/main/format_unpack.c
>>          create mode 100644 src/mesa/main/format_unpack.c.mako
>>          create mode 100644 src/mesa/main/run_mako.py
>>         
>>         --
>>         1.9.1
>>         
>>         _______________________________________________
>>         mesa-dev mailing list
>>         mesa-dev at lists.freedesktop.org
>>         http://lists.freedesktop.org/mailman/listinfo/mesa-dev
>>
>>
> 
> 
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