[PATCH v5 0/3] Support 64 bpp half float formats

Kevin Strasser kevin.strasser at intel.com
Fri Feb 8 21:49:40 UTC 2019

This series defines new formats and adds implementation to the i915 driver.
Since posting v1 I have removed the pixel normalize property, as it's not needed
for basic functionality. Also, I have been working on adding support to
userspace, but we can't land any patches until drm_fourcc.h has been updated

I have submitted a series to Mesa to make use of the RGBA ordered formats:

My igt branch is reworked to drop usage of pixel normalize and includes use
of f16c intrinsics to speed up conversion:

I also have a libdrm branch with fp16 coverage added to modetest:

To serve as a smoke test of the whole stack I have a modified version of

Kevin Strasser (3):
  drm/fourcc: Add 64 bpp half float formats
  drm/i915: Refactor icl_is_hdr_plane
  drm/i915/icl: Implement half float formats

 drivers/gpu/drm/drm_fourcc.c         |  4 ++
 drivers/gpu/drm/i915/intel_atomic.c  |  3 +-
 drivers/gpu/drm/i915/intel_display.c | 29 +++++++++++++-
 drivers/gpu/drm/i915/intel_drv.h     |  7 ++--
 drivers/gpu/drm/i915/intel_sprite.c  | 73 +++++++++++++++++++++++++++++++-----
 include/uapi/drm/drm_fourcc.h        | 11 ++++++
 6 files changed, 112 insertions(+), 15 deletions(-)


More information about the dri-devel mailing list