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07fc6a7b1a
On hsw+ and glk class hardware we current make a mess of things when we have to both generate limited range output and use the hw gamma LUT. Since we do the range compression using the pipe CSC unit (which is situated before the gamma LUT in the pipe) we are in fact applying the gamma to the limited range data instead of the full range data as the user intended. We can work around this by applying the range compression via the gamma LUT instead of using the pipe CSC for it. Fairly easy to do now that we have the internal post_csc_lut attachment point where we can stick our new cooked LUT. On hsw+ this only needs to be done when using the split gamma mode or when the ctm is enabled since otherwise we can simply reorder the LUT vs. CSC. On glk we need to do this any time a gamma LUT is used since no reordering is possible. We do lose a bit of coverage in intel_color_assert_luts(), but so be it. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221114153732.11773-19-ville.syrjala@linux.intel.com Reviewed-by: Uma Shankar <uma.shankar@intel.com> |
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.