[Mesa-dev] [PATCH 00/13] implement EGL_EXT_image_dma_buf_import_modifiers

[Marek Olšák]

Hi,

Is the modifier just a driver-specific description of the tiling
layout and compression?

What makes you think that 8 bytes is enough to describe that? What if
I need 9 bytes just to program the display hardware?

Drivers importing DMABUFs still have to invoke the texture tiling
calculator to get all necessary parameters for rendering (not just
display), which may even be 128 bytes per plane.

Marek


On Tue, Nov 15, 2016 at 3:24 PM, Varad Gautam <varadgautam at gmail.com> wrote:
> Hello,
>
> This series implements EGL_EXT_image_dma_buf_import_modifiers [1] which makes
> it possible to pass drm fourcc modifiers to EGL when importing dmabufs.
>
> [1] https://www.khronos.org/registry/egl/extensions/EXT/EGL_EXT_image_dma_buf_import_modifiers.txt
>
> Pekka Paalanen (5):
>   egl: return error for unknown EGLImage attributes
>   egl: introduce DMA_BUF_MAX_PLANES
>   egl/main: add support for fourth plane tokens
>   dri: support DRIimage creation from dmabufs with modifiers
>   egl_dri2: add support for using modifier attributes in
>     eglCreateImageKHR
>
> Varad Gautam (8):
>   egl: update eglext.h
>   st/dri: implement DRIimage creation from dmabufs with modifiers
>   egl: implement eglQueryDmaBufFormatsEXT
>   dri: add queryDmaBufModifiers to DRIimage
>   gallium: introduce format modifier querying
>   st/dri: support format modifier queries
>   egl: implement eglQueryDmaBufModifiersEXT
>   egl: advertise EGL_EXT_image_dma_buf_import_modifiers
>
>  include/EGL/eglext.h                             |  60 ++++++-
>  include/GL/internal/dri_interface.h              |  31 +++-
>  src/egl/drivers/dri2/egl_dri2.c                  | 209 +++++++++++++++++++++--
>  src/egl/main/eglapi.c                            |  41 +++++
>  src/egl/main/eglapi.h                            |   9 +
>  src/egl/main/egldisplay.h                        |   1 +
>  src/egl/main/eglimage.c                          |  63 ++++++-
>  src/egl/main/eglimage.h                          |  10 +-
>  src/gallium/docs/source/screen.rst               |   2 +
>  src/gallium/drivers/freedreno/freedreno_screen.c |   1 +
>  src/gallium/drivers/i915/i915_screen.c           |   1 +
>  src/gallium/drivers/ilo/ilo_screen.c             |   1 +
>  src/gallium/drivers/llvmpipe/lp_screen.c         |   1 +
>  src/gallium/drivers/nouveau/nv30/nv30_screen.c   |   1 +
>  src/gallium/drivers/nouveau/nv50/nv50_screen.c   |   1 +
>  src/gallium/drivers/nouveau/nvc0/nvc0_screen.c   |   1 +
>  src/gallium/drivers/r300/r300_screen.c           |   1 +
>  src/gallium/drivers/r600/r600_pipe.c             |   1 +
>  src/gallium/drivers/radeonsi/si_pipe.c           |   1 +
>  src/gallium/drivers/softpipe/sp_screen.c         |   1 +
>  src/gallium/drivers/svga/svga_screen.c           |   1 +
>  src/gallium/drivers/swr/swr_screen.cpp           |   1 +
>  src/gallium/drivers/vc4/vc4_screen.c             |   1 +
>  src/gallium/drivers/virgl/virgl_screen.c         |   1 +
>  src/gallium/include/pipe/p_defines.h             |   1 +
>  src/gallium/include/pipe/p_screen.h              |   7 +
>  src/gallium/include/state_tracker/drm_driver.h   |   2 +
>  src/gallium/state_trackers/dri/dri2.c            |  63 ++++++-
>  28 files changed, 487 insertions(+), 27 deletions(-)
>
> --
> 2.6.2
>
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