[Mesa-dev] [PATCH 0/8] GBM Graphics Buffer Manager

Thu Jun 23 03:46:41 PDT 2011

2011/6/23 Chia-I Wu <olvaffe at gmail.com>:
> On Wed, Jun 22, 2011 at 10:30 PM, Benjamin Franzke
> <benjaminfranzke at googlemail.com> wrote:
>> Hi List,
>>
>> This series adds a graphics buffer management library which is
>> targeted to be used as native (drm) platform for egl on kms or openwfd,
>> and thus replaces the current mechanism of using a fd as EGLNativeDisplay
>> and EGL_MESA_drm_image to create buffers.
>> GBM uses the mesas internal dri interface or acts as a gallium state tracker.
>>
>> The mapping to EGL types is:
>>
>> gbm_device - EGLNativeDisplayType
>> gbm_bo     - EGLNativePixmapType / EGL_NATIVE_PIXMAP_KHR
>>
>> This integrates better with the idea of EGL, which assumes there is
>> some kind of native library thats responsible for allocating buffers.
>>
>> We wanted to use libkms, but since that's explicitly designed to no
>> support hw renderable buffers we have to go a different route.
> The idea looks good to me in general.  But would it make sense to
> replace st/gbm and targets/gdm by another backend that uses st/xa,
> which is supposed to have a stable ABI, instead (currently only on
> xa_branch)?

For the reason of a stable ABI we dont need it, since all of gbm is inside mesa.
Maybe it could be used at some point to ease driver loading/sharing or
so, dont know,
but right now I think its easier to just have this small state tracker.
Since its inside mesa we could change it later if it feels better then.

>>
>> Benjamin Franzke (8):
>>  dri: Add dupImage to DRIimageExtension
>>  intel: Implement DRIimageExtension::dupImage
>>  st/dri: Implement DRIimageExtension::dupImage
>>  Add gbm (generic/graphics buffer manager)
>>  gbm: Add dri backend
>>  gbm: Add gallium (drm) backend
>>  egl_dri2: Hookup gbm as drm platform
>>  st/egl: Hookup gbm for drm backend
>>
>>  Makefile                                           |   11 +
>>  configs/autoconf.in                                |   10 +-
>>  configs/default                                    |   14 +-
>>  configure.ac                                       |   70 ++++
>>  include/EGL/eglplatform.h                          |    6 +
>>  include/GL/internal/dri_interface.h                |    2 +
>>  src/egl/drivers/dri2/Makefile                      |    2 +
>>  src/egl/drivers/dri2/egl_dri2.c                    |   76 +++--
>>  src/egl/drivers/dri2/egl_dri2.h                    |   11 +
>>  src/egl/drivers/dri2/platform_drm.c                |   99 ++++--
>>  src/egl/main/Makefile                              |    4 +
>>  src/gallium/state_trackers/dri/drm/dri2.c          |   19 +
>>  src/gallium/state_trackers/egl/Makefile            |    3 +-
>>  src/gallium/state_trackers/egl/common/egl_g3d.c    |   18 +-
>>  src/gallium/state_trackers/egl/common/native.h     |    3 +
>>  src/gallium/state_trackers/egl/drm/modeset.c       |   36 ++
>>  src/gallium/state_trackers/egl/drm/native_drm.c    |   77 ++---
>>  src/gallium/state_trackers/egl/drm/native_drm.h    |    4 +
>>  src/gallium/state_trackers/gbm/Makefile            |   46 +++
>>  src/gallium/state_trackers/gbm/gbm_drm.c           |  225 ++++++++++++
>>  .../state_trackers/gbm/gbm_gallium_drmint.h        |   74 ++++
>>  src/gallium/targets/egl/Makefile                   |    2 +-
>>  src/gallium/targets/gbm/Makefile                   |   32 ++
>>  src/gallium/targets/gbm/gbm.c                      |   61 ++++
>>  src/gallium/targets/gbm/pipe_loader.c              |  192 ++++++++++
>>  src/gallium/targets/gbm/pipe_loader.h              |   48 +++
>>  src/gbm/Makefile                                   |   14 +
>>  src/gbm/backends/Makefile                          |   14 +
>>  src/gbm/backends/Makefile.template                 |   65 ++++
>>  src/gbm/backends/dri/Makefile                      |   22 ++
>>  src/gbm/backends/dri/driver_name.c                 |   89 +++++
>>  src/gbm/backends/dri/gbm_dri.c                     |  377 ++++++++++++++++++++
>>  src/gbm/backends/dri/gbm_driint.h                  |   78 ++++
>>  src/gbm/main/Makefile                              |   90 +++++
>>  src/gbm/main/backend.c                             |  128 +++++++
>>  src/gbm/main/backend.h                             |   36 ++
>>  src/gbm/main/common.c                              |   88 +++++
>>  src/gbm/main/common.h                              |   42 +++
>>  src/gbm/main/common_drm.h                          |   48 +++
>>  src/gbm/main/gbm.c                                 |  189 ++++++++++
>>  src/gbm/main/gbm.h                                 |   99 +++++
>>  src/gbm/main/gbm.pc.in                             |   12 +
>>  src/gbm/main/gbmint.h                              |   81 +++++
>>  src/mesa/drivers/dri/intel/intel_screen.c          |   27 ++-
>>  44 files changed, 2536 insertions(+), 108 deletions(-)
>>  create mode 100644 src/gallium/state_trackers/gbm/Makefile
>>  create mode 100644 src/gallium/state_trackers/gbm/gbm_drm.c
>>  create mode 100644 src/gallium/state_trackers/gbm/gbm_gallium_drmint.h
>>  create mode 100644 src/gallium/targets/gbm/Makefile
>>  create mode 100644 src/gallium/targets/gbm/gbm.c
>>  create mode 100644 src/gallium/targets/gbm/pipe_loader.c
>>  create mode 100644 src/gallium/targets/gbm/pipe_loader.h
>>  create mode 100644 src/gbm/Makefile
>>  create mode 100644 src/gbm/backends/Makefile
>>  create mode 100644 src/gbm/backends/Makefile.template
>>  create mode 100644 src/gbm/backends/dri/Makefile
>>  create mode 100644 src/gbm/backends/dri/driver_name.c
>>  create mode 100644 src/gbm/backends/dri/gbm_dri.c
>>  create mode 100644 src/gbm/backends/dri/gbm_driint.h
>>  create mode 100644 src/gbm/main/Makefile
>>  create mode 100644 src/gbm/main/backend.c
>>  create mode 100644 src/gbm/main/backend.h
>>  create mode 100644 src/gbm/main/common.c
>>  create mode 100644 src/gbm/main/common.h
>>  create mode 100644 src/gbm/main/common_drm.h
>>  create mode 100644 src/gbm/main/gbm.c
>>  create mode 100644 src/gbm/main/gbm.h
>>  create mode 100644 src/gbm/main/gbm.pc.in
>>  create mode 100644 src/gbm/main/gbmint.h
>>
>> --
>> 1.7.3.4
>>
>> _______________________________________________
>> mesa-dev mailing list
>> mesa-dev at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/mesa-dev
>>
>
>
>
> --
> olv at LunarG.com
>