[PATCH libdrm v2 00/10] Add support for low-color frame buffer formats

[Geert Uytterhoeven]

	Hi all,

A long outstanding issue with the DRM subsystem has been the lack of
support for low-color displays, as used typically on older desktop
systems, and on small embedded displays.

This patch series adds support for color-indexed frame buffer formats
with 2, 4, and 16 colors.  It has been tested on ARAnyM using a
work-in-progress Atari DRM driver.

Changes compared to v1:
  - SMPTE color LUT accuracy,
  - Factor out smpte color LUT,
  - Restructure patches,
  - Improve descriptions.
  - Store number of colors for indexed formats,
  - Add SMPTE pattern support for the C1 and C2 formats.

Please refer to [2] for related Linux DRM patches and background
information.

Thanks for your comments!

[1] "[PATCH libdrm 0/3] Add support for low-color frame buffer formats"
    https://lore.kernel.org/r/cover.1646683737.git.geert@linux-m68k.org
[2] "[PATCH v3 00/10] drm: Add support for low-color frame buffer formats"
    https://lore.kernel.org/r/cover.1657294931.git.geert@linux-m68k.org

Geert Uytterhoeven (10):
  util: Improve SMPTE color LUT accuracy
  util: Factor out and optimize C8 SMPTE color LUT
  [RFC] drm_fourcc: Add DRM_FORMAT_C[124]
  util: Add support for DRM_FORMAT_C[124]
  util: Store number of colors for indexed formats
  util: Add SMPTE pattern support for C4 format
  util: Add SMPTE pattern support for C1 format
  util: Add SMPTE pattern support for C2 format
  modetest: Add support for DRM_FORMAT_C[124]
  modetest: Add SMPTE pattern support for C4 format

 include/drm/drm_fourcc.h  |   5 +-
 tests/modetest/buffers.c  |  15 ++
 tests/modetest/modetest.c |   9 +-
 tests/util/format.c       |   5 +-
 tests/util/format.h       |   1 +
 tests/util/pattern.c      | 416 ++++++++++++++++++++++++++++++++++----
 tests/util/pattern.h      |   2 +-
 7 files changed, 409 insertions(+), 44 deletions(-)

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2.25.1