Questions re: Radeon DRI3 [ANSWERED] [enabled - works!]

[dufeu]

I have an r600 based (RS780) GPU. I've been updating my USE flags, kernel and configuration and am pretty happy with what I have.

Recently, DRI3 capability has been released for the ati/amd series GPUs. However, it is not enabled by default. I'd like to enable DRI3 (for testing) which I inderstand I need to set in xorg.conf. However, I can't find anywhere examples of what this xorg.conf section is supposed to look like.

And of course, given the recent timing of the release, mention of enabling DRI3 isn't included in any 'How-To's either.

Currently, I don't use an xorg.conf file so I assume I just need to create one which only has the DRI3 section enabled to do this.

2nd question. If I want mesa to build a mesa driver for only r600 GPUs, do I do the same type of thing as I would do for an Intel i915 series GPU? i.e VIDEO_CARDS="radeon r600"? I don't expect any functional differences. I'm just like to not include things I won't use.

For what it's worth, this is my pertinent installed packages/configuration/capabilities:

Code: Select all

Portage 2.2.18 (python 2.7.9-final-0, default/linux/amd64/13.0/desktop/kde, gcc-4.9.2, glibc-2.20-r2, 3.19.2-gentoo x86_64)
=================================================================
System uname: Linux-3.19.2-gentoo-x86_64-AMD_Phenom-tm-_9600_Quad-Core_Processor-with-gentoo-2.2

x11-base/xorg-server-1.17.1-r1 glamor ipv6 nptl suid udev xorg
x11-drivers/xf86-video-ati-9999 udev -glamor

# equery uses mesa
[ Legend : U - final flag setting for installation]
[        : I - package is installed with flag     ]
[ Colors : set, unset                             ]
 * Found these USE flags for media-libs/mesa-10.5.1:
 U I
 + + abi_x86_32           : 32-bit (x86) libraries
 - - bindist              : Disable patent-encumbered ARB_texture_float, EXT_texture_shared_exponent, and EXT_packed_float extensions.
 + + classic              : Build drivers based on the classic architecture.
 - - d3d9                 : Enable Direct 3D9 API through Nine state tracker. Can be used together with patched wine.
 - - debug                : Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see
                            http://www.gentoo.org/proj/en/qa/backtraces.xml
 + + dri3                 : Enable DRI3 support.
 + + egl                  : Enable EGL support.
 + + gallium              : Build drivers based on Gallium3D, the new architecture for 3D graphics drivers.
 + + gbm                  : Enable the Graphics Buffer Manager for EGL on KMS.
 - - gles1                : Enable GLESv1 support.
 + + gles2                : Enable GLESv2 support.
 + + llvm                 : Enable LLVM backend for Gallium3D.
 + + nptl                 : Enable support for Native POSIX Threads Library, the new threading module (requires linux-2.6 or better usually)
 - - opencl               : Enable the Clover Gallium OpenCL state tracker.
 - - openmax              : Enable OpenMAX video decode/encode acceleration for Gallium3D.
 - - osmesa               : Build the Mesa library for off-screen rendering.
 - - pax_kernel           : Enable if the user plans to run the package under a pax enabled hardened kernel
 - - pic                  : disable optimized assembly code that is not PIC friendly
 + + udev                 : Enable virtual/udev integration (device discovery, power and storage device support, etc)
 + + vaapi                : Enable Video Acceleration API for hardware decoding
 + + vdpau                : Enable the VDPAU acceleration interface for the Gallium3D Video Layer.
 - - video_cards_i915     : VIDEO_CARDS setting to build driver for Intel i915 video cards
 - - video_cards_i965     : VIDEO_CARDS setting to build driver for Intel i965 video cards
 - - video_cards_ilo      : VIDEO_CARDS setting to build unofficial gallium driver for Intel gen6/7 video cards
 - - video_cards_intel    : VIDEO_CARDS setting to build driver for Intel video cards
 - - video_cards_nouveau  : VIDEO_CARDS setting to build reverse-engineered driver for nvidia cards
 - - video_cards_r100     : VIDEO_CARDS setting to build only r100 based chips code for radeon
 - - video_cards_r200     : VIDEO_CARDS setting to build only r200 based chips code for radeon
 - - video_cards_r300     : VIDEO_CARDS setting to build only r300, r400 and r500 based chips code for radeon
 - - video_cards_r600     : VIDEO_CARDS setting to build only r600, r700, Evergreen and Northern Islands based chips code for radeon
 + + video_cards_radeon   : VIDEO_CARDS setting to build driver for ATI radeon video cards
 - - video_cards_radeonsi : VIDEO_CARDS setting to build only Southern Islands based chips code for radeon
 - - video_cards_vmware   : VIDEO_CARDS setting to build driver for vmware video cards
 - - wayland              : Enable support for dev-libs/wayland
 - - xa                   : Enable the XA (X Acceleration) API for Gallium3D.
 + + xvmc                 : Enable the XvMC acceleration interface for the Gallium3D Video Layer.

# vdpauinfo
display: :0   screen: 0
API version: 1
Information string: G3DVL VDPAU Driver Shared Library version 1.0

Video surface:

name   width height types
-------------------------------------------
420     8192  8192  NV12 YV12 
422     8192  8192  UYVY YUYV 
444     8192  8192  Y8U8V8A8 V8U8Y8A8 

Decoder capabilities:

name                        level macbs width height
----------------------------------------------------
MPEG1                           0  9216  2048  1152
MPEG2_SIMPLE                    3  9216  2048  1152
MPEG2_MAIN                      3  9216  2048  1152
H264_BASELINE                  41  9216  2048  1152
H264_MAIN                      41  9216  2048  1152
H264_HIGH                      41  9216  2048  1152
VC1_SIMPLE                     --- not supported ---
VC1_MAIN                       --- not supported ---
VC1_ADVANCED                    4  9216  2048  1152
MPEG4_PART2_SP                 --- not supported ---
MPEG4_PART2_ASP                --- not supported ---
DIVX4_QMOBILE                  --- not supported ---
DIVX4_MOBILE                   --- not supported ---
DIVX4_HOME_THEATER             --- not supported ---
DIVX4_HD_1080P                 --- not supported ---
DIVX5_QMOBILE                  --- not supported ---
DIVX5_MOBILE                   --- not supported ---
DIVX5_HOME_THEATER             --- not supported ---
DIVX5_HD_1080P                 --- not supported ---
H264_CONSTRAINED_BASELINE      --- not supported ---
H264_EXTENDED                  --- not supported ---
H264_PROGRESSIVE_HIGH          --- not supported ---
H264_CONSTRAINED_HIGH          --- not supported ---
H264_HIGH_444_PREDICTIVE       --- not supported ---

Output surface:

name              width height nat types
----------------------------------------------------
B8G8R8A8          8192  8192    y  NV12 YV12 UYVY YUYV Y8U8V8A8 V8U8Y8A8 A4I4 I4A4 A8I8 I8A8 
R8G8B8A8          8192  8192    y  NV12 YV12 UYVY YUYV Y8U8V8A8 V8U8Y8A8 A4I4 I4A4 A8I8 I8A8 
R10G10B10A2       8192  8192    y  NV12 YV12 UYVY YUYV Y8U8V8A8 V8U8Y8A8 A4I4 I4A4 A8I8 I8A8 
B10G10R10A2       8192  8192    y  NV12 YV12 UYVY YUYV Y8U8V8A8 V8U8Y8A8 A4I4 I4A4 A8I8 I8A8 

Bitmap surface:

name              width height
------------------------------
B8G8R8A8          8192  8192
R8G8B8A8          8192  8192
R10G10B10A2       8192  8192
B10G10R10A2       8192  8192
A8                8192  8192

Video mixer:

feature name                    sup
------------------------------------
DEINTERLACE_TEMPORAL             y
DEINTERLACE_TEMPORAL_SPATIAL     -
INVERSE_TELECINE                 -
NOISE_REDUCTION                  y
SHARPNESS                        y
LUMA_KEY                         -
HIGH QUALITY SCALING - L1        -
HIGH QUALITY SCALING - L2        -
HIGH QUALITY SCALING - L3        -
HIGH QUALITY SCALING - L4        -
HIGH QUALITY SCALING - L5        -
HIGH QUALITY SCALING - L6        -
HIGH QUALITY SCALING - L7        -
HIGH QUALITY SCALING - L8        -
HIGH QUALITY SCALING - L9        -

parameter name                  sup      min      max
-----------------------------------------------------
VIDEO_SURFACE_WIDTH              y        48     2048
VIDEO_SURFACE_HEIGHT             y        48     1152
CHROMA_TYPE                      y  
LAYERS                           y         0        4

attribute name                  sup      min      max
-----------------------------------------------------
BACKGROUND_COLOR                 y  
CSC_MATRIX                       y  
NOISE_REDUCTION_LEVEL            y      0.00     1.00
SHARPNESS_LEVEL                  y     -1.00     1.00
LUMA_KEY_MIN_LUMA                y  
LUMA_KEY_MAX_LUMA                y 

[Perfect Gentleman]

/etc/X11/xorg.conf.d/20-radeon.conf

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Section "Device"
   Identifier  "Radeon"
   Driver      "radeon"
   Option      "DRI3"   "on"
EndSection

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$ sudo cat /var/log/Xorg.0.log | grep -i dri3
[    16.823] (**) RADEON(0): Option "DRI3" "on"
[    16.929] (**) RADEON(0): DRI3 enabled

[dufeu]

/etc/X11/xorg.conf.d/20-radeon.conf

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Section "Device"
   Identifier  "Radeon"
   Driver      "radeon"
   Option      "DRI3"   "on"
EndSection

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$ sudo cat /var/log/Xorg.0.log | grep -i dri3
[    16.823] (**) RADEON(0): Option "DRI3" "on"
[    16.929] (**) RADEON(0): DRI3 enabled

Perfect! Thank you.

[Perfect Gentleman]

You are welcome!

[dufeu]

So far, DRI3 is enabled, working and everything seems noticably faster. I don't know if that last is real or wishful thinking on my part, but everything really seems to display noticably faster.

Note: I use xf86-video-ati-9999 from the Gentoo X11 overlay and I updated to the 3.19.3 gentoo-sources kernel just prior to activating DRI3. The rest of my configuration remains as I posted above.

I've been using my system as normally would which includes assorted new anime playback, some experimental Hi444p video playback and so forth. No 'gatchas' yet.

Thank you again Perfect Gentleman.

[Ant P.]

DRI3 seems to be on by default on my i915, I wonder why we have to jump through hoops for it on radeon (and why "Option DRI3" isn't documented anywhere...)

[dufeu]

I wonder why we have to jump through hoops for it on radeon (and why "Option DRI3" isn't documented anywhere...)

DRI3 v2 was included in the radeon driver only 2 weeks ago.

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12 days	Add xorg_list_for_each_entry_safe fallback in radeon_list.h	Michel Dänzer	1	-0/+1
12 days	Simplify includes in radeon_{dri3,present}.c	Michel Dänzer	2	-16/+2
12 days	Add DRI3 support v2	Michel Dänzer	6	-3/+236
12 days	Handle tiling in radeon_set_shared_pixmap_backing	David Heidelberger	3	-4/+41
12 days	Add support for the Present extension v2	Michel Dänzer	5	-3/+431
12 days	Add support for SYNC extension fences v2	Michel Dänzer	5	-2/+165
12 days	Fold radeon_glamor_flush into radeon_cs_flush_indirect	Michel Dänzer	3	-20/+11
12 days	Move #include "radeon_glamor.h" from radeon.h to where it's needed	Michel Dänzer	8	-35/+43
12 days	DRI2: Split out helper for getting UST and MSC of a specific CRTC	Michel Dänzer	3	-20/+40
12 days	DRI2: Use helper functions for DRM event queue management v3	Michel Dänzer	4	-236/+166
12 days	DRI2: Move radeon_dri2_flip_event_handler	Michel Dänzer	1	-58/+58
12 days	DRI2: Remove superfluous assignments to *_info->frame	Michel Dänzer	1	-6/+0
12 days	DRI2: Simplify blit fallback handling for scheduled swaps	Michel Dänzer	1	-27/+20
12 days	Add DRM event queue helpers v2	Michel Dänzer	4	-2/+244
12 days	Move xorg_list backwards compatibility to new radeon_list.h header	Michel Dänzer	3	-9/+40
2015-03-05	Require at least xserver 1.8	Michel Dänzer	2	-30/+6

I did see either a 'one time' emerge notice or a gentoo mail notice specifying that while DRI3 for radeon was now included, it was by default not enabled. I believe the idea was to not break unsuspecting users if there were any unnoticed bugs.

Since the lag in the radeon driver for DRI3 support applies only to radeon and that some time in the future it will be enabled by default, the notice I saw flash by was probably considered all that was needed.

The xorg.conf section segment Perfect Gentleman provided is pretty standard syntax for the xorg.conf file. It's just that I've run for years without an xorg.conf file and couldn't cudgel my memopry hard enough nor find examples to give me the correct naming I needed.

And, BTW - while the driver provides the DRI3 capability, I think it's either xorg-server or mesa which enables DRI3 from the user's perspective. So yes, intel users have had DRI3 enabled earlier.