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Mario Kleiner 33ee0c3b21 sna/uxa: Fix colormap handling at screen depth 30. (v2)
The various clut handling functions like a setup
consistent with the x-screen color depth. Otherwise
we observe improper sampling in the gamma tables
at depth 30.

Therefore replace hard-coded bitsPerRGB = 8 by actual
bits per channel scrn->rgbBits. Also use this for call
to xf86HandleColormaps().

Tested for uxa and sna at depths 8, 16, 24 and 30 on
IvyBridge, and tested at depth 24 and 30 that xgamma
and gamma table animations work, and with measurement
equipment to make sure identity gamma ramps actually
are identity mappings at the output.

v2: Also deal with X-Server 1.19 and earlier, which as of
    v1.19.6 lack a fix to color palette handling and can
    not deal with depths/bpc > 24/8 bpc. On < 1.20 we skip
    xf86HandleColormaps() setup at > 8 bpc. This disables
    color palette handling on such servers at > 8 bpc, but
    still keeps RandR gamma table handling intact.

    Tested on 1.19.6 and 1.20.0 to do the right thing.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
2019-01-21 07:56:27 +00:00
benchmarks Start splitting out the benchmarks from test/ 2015-07-23 14:51:02 +01:00
libobj Use AC_FUNC_ALLOC 2015-03-25 14:20:43 +00:00
m4 Prefer i830_dri.so for gen2 chipsets 2013-04-17 15:28:13 +01:00
man meson: Add meson build system 2018-02-06 13:12:33 +00:00
src sna/uxa: Fix colormap handling at screen depth 30. (v2) 2019-01-21 07:56:27 +00:00
test pciids: Update for missing Skylake IDs 2017-02-27 20:43:06 +00:00
tools meson: Add meson build system 2018-02-06 13:12:33 +00:00
xvmc meson: Add meson build system 2018-02-06 13:12:33 +00:00
.gitignore sna: Assemble SF and WM kernels using brw 2012-07-30 13:12:04 +01:00
AUTHORS intel: Fix weblinks 2014-06-25 11:34:48 +01:00
COPYING COPYING: replace stub file with actual Copyright notices. 2010-06-12 20:24:10 -04:00
Makefile.am configure: Remove ACLOCAL_FLAGS passthrough 2016-03-24 11:04:50 +00:00
NEWS Fix typos found with codespell v1.7 2015-06-09 20:46:12 +01:00
README intel: Simplify new platform names. 2016-12-06 09:38:56 +00:00
RELEASING Increment version to 2.9.0 2009-09-28 20:03:39 -07:00
autogen.sh autogen: add default patch prefix 2017-01-26 14:00:21 +10:00
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meson_options.txt meson: s/debug/internal-debug/ 2018-10-22 14:47:50 +01:00

README

xf86-video-intel
Open-source X.org graphics driver for Intel graphics
https://01.org/linuxgraphics/

What is xf86-video-intel
------------------------
The xf86-video-intel module is an open-source 2D graphics driver for
the X Window System as implemented by X.org. It supports a variety of
Intel graphics chipsets including:

	i810/i810e/i810-dc100,i815,
	i830M,845G,852GM,855GM,865G,
	915G/GM,945G/GM/GME,946GZ
	G/GM/GME/Q965,
	G/Q33,G/Q35,G41,G/Q43,G/GM/Q45
	PineView-M (Atom N400 series)
	PineView-D (Atom D400/D500 series)
	Intel(R) HD Graphics,
	Intel(R) Iris(TM) Graphics,
	Intel(R) Iris(TM) Pro Graphics.

Where to get more information about the driver
----------------------------------------------
The primary source of information about this and other open-source
drivers for Intel graphics is:

	https://01.org/linuxgraphics/

Documentation specific to the xf86-video-intel driver including
possible configuration options for the xorg.conf file can be found in
the intel(4) manual page. After installing the driver this
documentation can be read with the following command:

	man intel

Mailing list for communication with users and developers of
xf86-video-intel:

	intel-gfx@lists.freedesktop.org

	Note: Subscription is required before posting, but anyone is
	free to subscribe. See instructions (and archives) here:

	http://lists.freedesktop.org/mailman/listinfo/intel-gfx

To report bugs encountered with the driver, see:

	https://01.org/linuxgraphics/documentation/how-report-bugs

To see bugs that are targeted to be fixed in the next release:

	https://bugs.freedesktop.org/show_bug.cgi?id=intel-2d-release