[Beignet] [PATCH 0/2] Refine cl_khr_gl_sharing.

[Zhigang Gong]

The previous implementation is using the existing egl extension
to convert a texture to a egl image and then hack the gbm to get
the image's attributes including the layout and the drm buffer
object name then create a corresponding cl image.

The restrications of that solution is:
1. It doens't support buffer object/render buffer.
2. It doesn't support non-zero mipmap level.

To overcome the above restrications, we need to introduce a new
EGL extension to export low level attribute of texture/buffer object/
render buffer to cl driver layer from the mesa dri driver layer.

Unfortunately, the mesa community doesn't accept the new extension.
I have to implement it in beignet. Thus we still have to do some level
of hack here. Major including to access some _EGLXXX internal data structure
and some mesa internal data structure. So we need the mesa's source code
when you want to build beignet with cl_khr_gl_sharing support.

You could put the mesa source code package to ~/mesa
or at the same directory of the beignet source dir,
or you can use MESA_SOURCE_DIR to specify the directory
of the mesa source code.

If beignet can't find the mesa source code directory, cl_khr_gl_sharing
will be disabled.

This patchset implement the texture sharing and the framework for
the buffer object/render buffer sharing.

Zhigang Gong (2):
  CL: Refactor cl_mem's implementation.
  CL: Enalbe gl sharing with new egl extension.

 CMake/FindEGL.cmake                        |   14 ++
 src/CMakeLists.txt                         |   19 +-
 src/cl_api.c                               |   44 ++--
 src/cl_command_queue.c                     |   16 +-
 src/cl_context.h                           |    3 +
 src/cl_driver.h                            |   66 +++---
 src/cl_driver_defs.c                       |   10 +-
 src/cl_driver_type.h                       |   24 +++
 src/cl_enqueue.c                           |   19 +-
 src/cl_extensions.c                        |   22 +-
 src/cl_extensions.h                        |   25 ---
 src/cl_kernel.c                            |    4 +-
 src/cl_khr_icd.h                           |    4 +
 src/cl_mem.c                               |  165 +++++++++------
 src/cl_mem.h                               |  111 ++++++++--
 src/cl_mem_gl.c                            |  194 +++---------------
 src/cl_utils.h                             |   10 +-
 src/intel/intel_dri_resource_sharing.c     |  208 +++++++++++++++++++
 src/intel/intel_dri_resource_sharing.h     |   39 ++++
 src/intel/intel_dri_resource_sharing_int.h |  143 +++++++++++++
 src/intel/intel_driver.c                   |  224 +++++++++++++++-----
 src/intel/intel_driver.h                   |    6 -
 src/x11/dricommon.h                        |    5 -
 src/x11/gbm_deps/backend.h                 |   36 ----
 src/x11/gbm_deps/common.h                  |   42 ----
 src/x11/gbm_deps/common_drm.h              |   48 -----
 src/x11/gbm_deps/gbm.h                     |  292 --------------------------
 src/x11/gbm_deps/gbm_driint.h              |  108 ----------
 src/x11/gbm_deps/gbmint.h                  |  116 -----------
 src/x11/gbm_dri2_x11_platform.c            |  126 ------------
 src/x11/mesa_egl_extension.c               |  307 ++++++++++++++++++++++++++++
 src/x11/mesa_egl_extension.h               |   20 ++
 src/x11/mesa_egl_res_share.c               |  135 ++++++++++++
 src/x11/mesa_egl_res_share.h               |   44 ++++
 utests/CMakeLists.txt                      |    4 +-
 utests/utest_helper.cpp                    |   25 ++-
 36 files changed, 1459 insertions(+), 1219 deletions(-)
 create mode 100644 src/cl_driver_type.h
 create mode 100644 src/intel/intel_dri_resource_sharing.c
 create mode 100644 src/intel/intel_dri_resource_sharing.h
 create mode 100644 src/intel/intel_dri_resource_sharing_int.h
 delete mode 100644 src/x11/gbm_deps/backend.h
 delete mode 100644 src/x11/gbm_deps/common.h
 delete mode 100644 src/x11/gbm_deps/common_drm.h
 delete mode 100644 src/x11/gbm_deps/gbm.h
 delete mode 100644 src/x11/gbm_deps/gbm_driint.h
 delete mode 100644 src/x11/gbm_deps/gbmint.h
 delete mode 100644 src/x11/gbm_dri2_x11_platform.c
 create mode 100644 src/x11/mesa_egl_extension.c
 create mode 100644 src/x11/mesa_egl_extension.h
 create mode 100644 src/x11/mesa_egl_res_share.c
 create mode 100644 src/x11/mesa_egl_res_share.h

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1.7.9.5