[Bug 80678] New: xrandr scaling / transform does not work with radeon

[Bug 80678] New: xrandr scaling / transform does not work with radeon

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=80678

          Priority: medium
            Bug ID: 80678
          Assignee: dri-devel@lists.freedesktop.org
           Summary: xrandr scaling / transform does not work with radeon
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: h.judt@gmx.at
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Radeon
           Product: DRI

Scaling doesn't work with radeon. Screen rotation does work, though.

On a laptop with intel driver, the following works fine, except the mouse
pointer is confined to the mode area, but I believe that is a known xorg-server
bug to which a patch is available in bug #39949:
xrandr --fb 1920x1080 --output eDP1 --mode 1600x900 --scale-from 1920x1080

The same command, adapted to the radeon output device doesn't work. Same
software configuration (xorg-1.15.99.903, libdrm-git, mesa-git,
xf86-video-ati-git, various kernel versions (at the moment 3.15.2)).

lspci -vvv:
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Cayman PRO [Radeon HD 6950] (prog-if 00 [VGA controller])
        Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Device 0b00
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 41
        Region 0: Memory at e0000000 (64-bit, prefetchable) [size=256M]
        Region 2: Memory at f7e20000 (64-bit, non-prefetchable) [size=128K]
        Region 4: I/O ports at e000 [size=256]
        Expansion ROM at f7e00000 [disabled] [size=128K]
        Capabilities: [50] Power Management version 3
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [58] Express (v2) Legacy Endpoint, MSI 00
                DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <4us, L1
unlimited
                        ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
                DevCtl: Report errors: Correctable- Non-Fatal- Fatal-
Unsupported-
                        RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
                        MaxPayload 128 bytes, MaxReadReq 512 bytes
                DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr-
TransPend-
                LnkCap: Port #0, Speed 5GT/s, Width x16, ASPM L0s L1, Exit
Latency L0s <64ns, L1 <1us
                        ClockPM- Surprise- LLActRep- BwNot-
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+
DLActive- BWMgmt- ABWMgmt-
                DevCap2: Completion Timeout: Not Supported, TimeoutDis-, LTR-,
OBFF Not Supported
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-,
OBFF Disabled
                LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
                         Transmit Margin: Normal Operating Range,
EnterModifiedCompliance- ComplianceSOS-
                         Compliance De-emphasis: -6dB
                LnkSta2: Current De-emphasis Level: -3.5dB,
EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-,
LinkEqualizationRequest-
        Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
                Address: 00000000fee0100c  Data: 4191
        Capabilities: [100 v1] Vendor Specific Information: ID=0001 Rev=1
Len=010 <?>
        Capabilities: [150 v1] Advanced Error Reporting
                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt-
RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt-
RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt-
RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
                CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
                CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
                AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
        Kernel driver in use: radeon

Is scaling not implemented in radeon?

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[Bug 80678] xrandr scaling / transform does not work with radeon

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https://bugs.freedesktop.org/show_bug.cgi?id=80678

--- Comment #1 from Alex Deucher <agd5f@yahoo.com> ---
I'm not sure if EXA supports those options.  You might try glamor.

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[Bug 80678] xrandr scaling / transform does not work with radeon

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https://bugs.freedesktop.org/show_bug.cgi?id=80678

--- Comment #2 from Harald Judt <h.judt@gmx.at> ---
No, it doesn't work with glamor either. Besides, I'd like to use EXA because of
xv support.

Actually, I notice one difference after executing
xrandr --fb 1920x2400 --output HDMI-0 --mode 1920x1200 --scale-from 1920x2400

The vertical panel seems to stretch/extend to the new vertical size (2400).
However, the intended scaling doesn't get applied.

xrandr --verbose before and after this command shows no differences.

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[Bug 80678] xrandr scaling / transform does not work with radeon

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https://bugs.freedesktop.org/show_bug.cgi?id=80678

--- Comment #3 from Harald Judt <h.judt@gmx.at> ---
Created attachment 102098
  --> https://bugs.freedesktop.org/attachment.cgi?id=102098&action=edit
xrandr-verbose-glamor

xrandr --verbose output after applying above xrandr command

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[Bug 80678] xrandr scaling / transform does not work with radeon

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https://bugs.freedesktop.org/show_bug.cgi?id=80678

--- Comment #4 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #2)
> No, it doesn't work with glamor either. Besides, I'd like to use EXA because
> of xv support.

glamor supports Xv as well.

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[Bug 80678] xrandr scaling / transform does not work with radeon

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https://bugs.freedesktop.org/show_bug.cgi?id=80678

--- Comment #5 from Harald Judt <h.judt@gmx.at> ---
Maybe I forgot to compile in support for xv then. One way or the other, scaling
doesn't work.

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[Bug 80678] xrandr scaling / transform does not work with radeon

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https://bugs.freedesktop.org/show_bug.cgi?id=80678

--- Comment #6 from Sebastian Wick <sebastian@sebastianwick.net> ---
I'm running into the same problem. The transform matrix doesn't seem to get
updated at all.

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[Bug 80678] xrandr scaling / transform does not work with radeon

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https://bugs.freedesktop.org/show_bug.cgi?id=80678

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #7 from Michel Dänzer <michel@daenzer.net> ---
commit 9483a3d777919b224f70c3b4d01e4b320a57db31
Author: Michel Dänzer <michel.daenzer@amd.com>
Date:   Fri Jan 15 16:48:46 2016 +0900

    Fix RandR CRTC transforms

    Currently, Xorg will only transform the cursor as of the first time the
    cursor image changes after a transform is set.

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[Bug 80678] xrandr scaling / transform does not work with radeon

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https://bugs.freedesktop.org/show_bug.cgi?id=80678

--- Comment #8 from Harald Judt <h.judt@gmx.at> ---
Thanks for fixing it. Unfortunately, it comes too bit late, and I can no longer
test this because my old graphics card went to the gpu nirvana :-(

That said, hopefully it helps Sebastian and other users.

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[Bug 80678] xrandr scaling / transform does not work with radeon

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https://bugs.freedesktop.org/show_bug.cgi?id=80678

--- Comment #9 from Sebastian Wick <sebastian@sebastianwick.net> ---
It's working. Thanks, Michel!

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[Bug 80678] xrandr scaling / transform does not work with radeon

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https://bugs.freedesktop.org/show_bug.cgi?id=80678

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sobukus@sourcemage.org

--- Comment #10 from Michel Dänzer <michel@daenzer.net> ---
*** Bug 31799 has been marked as a duplicate of this bug. ***

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