dumpsys SurfaceFlinger

Android系统SurfaceFlinger服务的显示配置与同步机制分析

最新推荐文章于 2025-09-29 13:53:24 发布

原创最新推荐文章于 2025-09-29 13:53:24 发布 · 2.5k 阅读

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CC 4.0 BY-SA版权

文章标签：

#android #android studio

dumpsys SurfaceFlinger

显示开启了那些特殊宏

Build configuration: [sf PRESENT_TIME_OFFSET=0 FORCE_HWC_FOR_RBG_TO_YUV=0 MAX_VIRT_DISPLAY_DIM=0 RUNNING_WITHOUT_SYNC_FRAMEWORK=0 NUM_FRAMEBUFFER_SURFACE_BUFFERS=3] [libui] [libgui]

显示外接显示硬件的相关信息

Display identification data:
Display 0 (HWC display 0): no identification data

sync 机制

Sync configuration: [using: EGL_ANDROID_native_fence_sync EGL_KHR_wait_sync]

有 EGL_ANDROID_native_fence_sync、EGL_KHR_fence_sync和EGL_KHR_wait_sync，其中一二是互斥的，三可以与一二共存

VSync 相关

Scheduler:
+  Idle timer: off
+  Touch timer: off
+  Use content detection: off

ScreenOff: 0d00:00:01.822
60fps: 0d00:49:22.933

           app phase:   1000000 ns	         SF phase:   1000000 ns
     early app phase:   1000000 ns	   early SF phase:   1000000 ns
  GL early app phase:   1000000 ns	GL early SF phase:   1000000 ns
next VSYNC threshold: 9223372036854775807 ns
      present offset:         0 ns	     VSYNC period:  16666666 ns

DesiredDisplayConfigSpecs (DisplayManager): default config ID: 0, primary range: [0.00 60.00], app request range: [0.00 inf]

(config override by backdoor: no)

app: state=Idle VSyncState={displayId=0, count=528}
  pending events (count=0):
  connections (count=14):
    Connection{0xb4000079672bb4f0, VSyncRequest::None}
    Connection{0xb4000079672b9600, VSyncRequest::None}
    Connection{0xb4000079672dfe00, VSyncRequest::None}
    Connection{0xb4000079672e8f10, VSyncRequest::None}
    Connection{0xb4000079672e0a60, VSyncRequest::None}
    Connection{0xb4000079672e8990, VSyncRequest::None}
    Connection{0xb4000079672eb2d0, VSyncRequest::None}
    Connection{0xb4000079672e7440, VSyncRequest::None}
    Connection{0xb4000079672ebbc0, VSyncRequest::None}
    Connection{0xb4000079672ecae0, VSyncRequest::None}
    Connection{0xb4000079672ee0e0, VSyncRequest::None}
    Connection{0xb4000079672eef50, VSyncRequest::None}
    Connection{0xb4000079672e95f0, VSyncRequest::None}
    Connection{0xb4000079672daad0, VSyncRequest::None}
present fences are used
mPeriod: 16671000 ns (59.984 fps)
mPhase: 28247 ns
mError: 0 ns (sqrt=0.0)
mNumResyncSamplesSincePresent: 6 (limit 4)
mNumResyncSamples: 6 (max 32)
mResyncSamples:
  4391093643000
  4391110312000 (+16669000)
  4391127051000 (+16739000)
  4391143619000 (+16568000)
  4391160300000 (+16681000)
  4391176961000 (+16661000)
mPresentFences [8]:
  [invalid fence]
  [invalid fence]
  [invalid fence]
  [invalid fence]
  [invalid fence]
  [invalid fence]
  [invalid fence]
  [invalid fence]
current monotonic time: 4398044752848

StaticScreenStats

Static screen stats:
  < 1 frames: 2.747 s (0.1%)
  < 2 frames: 3.628 s (0.1%)
  < 3 frames: 0.477 s (0.0%)
  < 4 frames: 0.534 s (0.0%)
  < 5 frames: 3.227 s (0.1%)
  < 6 frames: 2.945 s (0.1%)
  < 7 frames: 0.205 s (0.0%)
  7+ frames: 2536.853 s (99.5%)

统计显示丢帧

Total missed frame count: 244
HWC missed frame count: 6
GPU missed frame count: 237

显示需要进行合成 Layer 详情(mDrawingState)

Visible layers (count = 43)
GraphicBufferProducers: 5, max 4096
Composition layers
* Layer 0xb400007a8729d420 (com.android.systemui.ImageWallpaper#0)
      isSecure=false geomUsesSourceCrop=true geomBufferUsesDisplayInverseTransform=false geomLayerTransform 0x00000000 (ROT_0 ) 0x05 (SCALE TRANSLATE )
    1.6500  0.0000  -96.0000
    0.0000  1.6500  -516.0000
    0.0000  0.0000  1.0000

      geomBufferSize=[0 0 1280 1280] geomContentCrop=[0 0 1280 1280] geomCrop=[0 0 -1 -1] geomBufferTransform=0 
        Region transparentRegionHint (this=0xb4000079d728b300, count=1)
    [  0,   0,   0,   0]
      geomLayerBounds=[58.181816 312.727264 1221.817993 967.272705]       shadowRadius=0.000000 
      blend=NONE (1) alpha=1.000000 backgroundBlurRadius=0 
      type=2013 appId=10115 composition type=DEVICE (2) 
      buffer: slot=0 buffer=0xb40000799728b630 
      sideband stream=0x0 
      color=[0.000000 0.000000 0.000000] 
      isOpaque=true hasProtectedContent=false isColorspaceAgnostic=false dataspace=UNKNOWN (0) hdr metadata types=0 colorTransform=[[1.000,0.000,0.000,0.000][0.000,1.000,0.000,0.000][0.000,0.000,1.000,0.000][0.000,0.000,0.000,1.000]]
* Layer 0xb400007a772b8430 (Task=1#0)
      isSecure=false geomUsesSourceCrop=false geomBufferUsesDisplayInverseTransform=false geomLayerTransform 0x00000000 (ROT_0 ) 0x00 (IDENTITY )
    1.0000  0.0000  0.0000
    0.0000  1.0000  0.0000
    0.0000  0.0000  1.0000

      geomBufferSize=[0 0 -1 -1] geomContentCrop=[0 0 -1 -1] geomCrop=[0 0 -1 -1] geomBufferTransform=0 
        Region transparentRegionHint (this=0xb4000079d72896e0, count=1)
    [  0,   0,   0,   0]
      geomLayerBounds=[0.000000 0.000000 1920.000000 1080.000000]       shadowRadius=0.000000 
      blend=NONE (1) alpha=1.000000 backgroundBlurRadius=0 
      type=0 appId=0 composition type=INVALID (0) 
      buffer: slot=-1 buffer=0x0 
      sideband stream=0x0 
      color=[0.000000 0.000000 0.000000] 
      isOpaque=true hasProtectedContent=false isColorspaceAgnostic=false dataspace=UNKNOWN (0) hdr metadata types=0 colorTransform=[[1.000,0.000,0.000,0.000][0.000,1.000,0.000,0.000][0.000,0.000,1.000,0.000][0.000,0.000,0.000,1.000]]

显示 mDrawingState 中 Layer 详情，调用 LayerFECompositionState::dump() 函数。注意 mDrawingState 保存的是经过 handleTransactionLocked() 处理过的 Layer。

显示设备(DisplayDevice)详情

Displays (1 entries)
+ DisplayDevice{0, internal, primary, "Internal display"}
   powerMode=On (2), activeConfig=0,    Composition Display State: ["Internal display"]
   isVirtual=false hwcId=0 
   isEnabled=true isSecure=true usesClientComposition=true usesDeviceComposition=false flipClientTarget=false reusedClientComposition=false layerStack=0 layerStackInternal=true 
   transform 0x00000000 (ROT_0 ) 0x00 (IDENTITY )
    1.0000  0.0000  -0.0000
    0.0000  1.0000  -0.0000
    0.0000  0.0000  1.0000

   bounds=[0 0 3840 1080] frame=[0 0 1920 1080] viewport=[0 0 1920 1080] sourceClip=[0 0 1920 1080] destinationClip=[0 0 1920 1080] needsFiltering=false 
   colorMode=NATIVE (0) renderIntent=COLORIMETRIC (0) dataspace=UNKNOWN (0) colorTransformMatrix=[[1.000,0.000,0.000,0.000][0.000,1.000,0.000,0.000][0.000,0.000,1.000,0.000][0.000,0.000,0.000,1.000]]target dataspace=UNKNOWN (0) 
   Composition Display Color State:
   HWC Support: wideColorGamut=false hdr10plus=false hdr10=false hlg=false dv=false metadata=0 
   Composition RenderSurface State:
   size=[3840 1080] ANativeWindow=0xb400007a6734b830 (format 1) flips=487 
  FramebufferSurface: dataspace: Default(0)
   mAbandoned=0
   - BufferQueue mMaxAcquiredBufferCount=2 mMaxDequeuedBufferCount=1
     mDequeueBufferCannotBlock=0 mAsyncMode=0
     mQueueBufferCanDrop=0 mLegacyBufferDrop=1
     default-size=[3840x1080] default-format=1      transform-hint=00 frame-counter=301
     mTransformHintInUse=00 mAutoPrerotation=0
   FIFO(0):
   (mConsumerName=FramebufferSurface, mConnectedApi=1, mConsumerUsageBits=6656, mId=1f5000000000, producer=[3185:/vendor/bin/hw/android.hardware.graphics.composer@2.1-service], consumer=[8016:/system/bin/surfaceflinger])
   Slots:
    >[02:0xb400007997287190] state=ACQUIRED 0xb400007997285450 frame=301 [3840x1080:   0,  1]
     [01:0xb4000079972869b0] state=FREE     0xb400007997285e70 frame=299 [3840x1080:   0,  1]
     [00:0xb400007997287730] state=FREE     0xb4000079972847f0 frame=300 [3840x1080:   0,  1]

   2 Layers
  - Output Layer 0xb400007a072a1380(com.android.systemui.ImageWallpaper#0)
        Region visibleRegion (this=0xb400007a072a1398, count=1)
    [  0,   0, 1920, 1080]
        Region visibleNonTransparentRegion (this=0xb400007a072a1400, count=1)
    [  0,   0, 1920, 1080]
        Region coveredRegion (this=0xb400007a072a1468, count=1)
    [  0,   0, 1920, 1080]
        Region output visibleRegion (this=0xb400007a072a14d0, count=1)
    [  0,   0, 1920, 1080]
        Region shadowRegion (this=0xb400007a072a1538, count=1)
    [  0,   0,   0,   0]
      forceClientComposition=false clearClientTarget=false displayFrame=[0 0 1920 1080] sourceCrop=[58.000000 313.000000 1222.000000 967.000000] bufferTransform=0 (0) dataspace=UNKNOWN (0) z-index=0 
      hwc: layer=0x0810 composition=CLIENT (1) 
  - Output Layer 0xb400007a072a5500(com.android.launcher3/com.android.launcher3.uioverrides.QuickstepLauncher#0)
        Region visibleRegion (this=0xb400007a072a5518, count=1)
    [  0,   0, 1920, 1080]
        Region visibleNonTransparentRegion (this=0xb400007a072a5580, count=1)
    [  0,   0, 1920, 1080]
        Region coveredRegion (this=0xb400007a072a55e8, count=1)
    [  0,   0,   0,   0]
        Region output visibleRegion (this=0xb400007a072a5650, count=1)
    [  0,   0, 1920, 1080]
        Region shadowRegion (this=0xb400007a072a56b8, count=1)
    [  0,   0,   0,   0]
      forceClientComposition=false clearClientTarget=false displayFrame=[0 0 1920 1080] sourceCrop=[0.000000 0.000000 1920.000000 1080.000000] bufferTransform=0 (0) dataspace=UNKNOWN (0) z-index=1 
      hwc: layer=0x0812 composition=CLIENT (1)

最开始是系统默认的显示设备(DisplayDevice)相关配置
然后是 DisplayDevice 中的 FramebufferSurface 和 Output 相关信息，FramebufferSurface 的 producer 为 /vendor/bin/hw/android.hardware.graphics.composer@2.1-service，是由于 SurfaceFlinger::processDisplayAdded() 函数在 composer 进程回调函数中调用
最后部分的2个 Layer 属于 OutputLayer，是需要提交到 hwc 合成的 Layer

显示 mCurrentState 中属于当前显示设备部分的详情

Display 0 HWC layers:
-----------------------------------------------------------------------------------------------------------------------------------------------
 Layer name
           Z |  Window Type |  Comp Type |  Transform |   Disp Frame (LTRB) |          Source Crop (LTRB) |     Frame Rate (Explicit) [Focused]
-----------------------------------------------------------------------------------------------------------------------------------------------
 com.android.systemui.ImageWallpaper#0
  rel      0 |         2013 |     CLIENT |          0 |    0    0 1920 1080 |   58.0  313.0 1222.0  967.0 |                              [ ]
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 com.android.launcher3/com.android.launcher3.uioverrides.QuickstepLauncher#0
  rel      0 |            1 |     CLIENT |          0 |    0    0 1920 1080 |    0.0    0.0 1920.0 1080.0 |                              [*]
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

此处与上面的 mDrawingState 中保存 Layer 对应，

HWC 中 Layer 详情

h/w composer state:
  h/w composer enabled
-- HWC2 Version HWC2-1.3.1 by bin.li@rock-chips.com --

 DisplayId=0, Connector 346, Type = DSI-1, Connector state = DRM_MODE_CONNECTED
  NumHwLayers=2, activeModeId=3, 3840x1080p60.00, colorMode = 0, bStandardSwitchResolution=0
------+-----+-----------+-----------+--------------------+-------------+------------+--------------------------------+------------------------+------------+------------
  id  |  z  |  sf-type  |  hwc-type |       handle       |  transform  |    blnd    |     source crop (l,t,r,b)      |          frame         | dataspace  | name
------+-----+-----------+-----------+--------------------+-------------+------------+--------------------------------+------------------------+------------+------------
 0016 | 000 |    Client |    Client | 00b400007965af5210 | None        | None       |   58.0,  313.0, 1222.0,  967.0 |    0,    0, 1920, 1080 |          0 | com.android.systemui.ImageWallpaper#0
 0018 | 001 |    Client |    Client | 00b400007965af8a50 | None        | Premultipl |    0.0,    0.0, 1920.0, 1080.0 |    0,    0, 1920, 1080 |          0 | com.android.launcher3/com.android.launcher3.uioverrides.QuickstepLauncher#0
------+-----+-----------+-----------+--------------------+-------------+------------+--------------------------------+------------------------+------------+------------

DrmHwcLayer Dump:
DrmHwcLayer[  16] Buffer[w/h/s/format]=[1280,1280,1280,   2] Fourcc=XB24 Transform=None    (0x1) Blend[a=255]=NONE     source_crop[l,t,r,b]=[   58,  313, 1222,  967] display_frame[l,t,r,b]=[   0,   0,1920,1080],skip=0,afbcd=1
DrmHwcLayer[  18] Buffer[w/h/s/format]=[1920,1080,1920,   1] Fourcc=AB24 Transform=None    (0x1) Blend[a=255]=PREMULT  source_crop[l,t,r,b]=[    0,    0, 1920, 1080] display_frame[l,t,r,b]=[   0,   0,1920,1080],skip=0,afbcd=1
DrmHwcFBtar[   0] Buffer[w/h/s/format]=[3840,1080,3840,   1] Fourcc=AB24 Transform=None    (0x1) Blend[a=255]=PREMULT  source_crop[l,t,r,b]=[    0,    0, 3840, 1080] display_frame[l,t,r,b]=[   0,   0,3840,1080],afbcd=1

显示 SurfaceFlinger 分配的 GraphicBuffer

DrmHwcLayer Dump:
DrmHwcLayer[  16] Buffer[w/h/s/format]=[1280,1280,1280,   2] Fourcc=XB24 Transform=None    (0x1) Blend[a=255]=NONE     source_crop[l,t,r,b]=[   58,  313, 1222,  967] display_frame[l,t,r,b]=[   0,   0,1920,1080],skip=0,afbcd=1
DrmHwcLayer[  18] Buffer[w/h/s/format]=[1920,1080,1920,   1] Fourcc=AB24 Transform=None    (0x1) Blend[a=255]=PREMULT  source_crop[l,t,r,b]=[    0,    0, 1920, 1080] display_frame[l,t,r,b]=[   0,   0,1920,1080],skip=0,afbcd=1
DrmHwcLayer[ 123] Buffer[w/h/s/format]=[  44,  56,  48,   1] Fourcc=AB24 Transform=None    (0x1) Blend[a=255]=PREMULT  source_crop[l,t,r,b]=[    0,    0,   44,   56] display_frame[l,t,r,b]=[ 947, 839, 991, 895],skip=0,afbcd=0
DrmHwcFBtar[   0] Buffer[w/h/s/format]=[3840,1080,3840,   1] Fourcc=AB24 Transform=None    (0x1) Blend[a=255]=PREMULT  source_crop[l,t,r,b]=[    0,    0, 3840, 1080] display_frame[l,t,r,b]=[   0,   0,3840,1080],afbcd=1
GraphicBufferAllocator buffers:
0xb4000079972847f0: unknown     | 3840 (   0) x 1080 |    1 |        1 | 0x1a00 | FramebufferSurface
0xb400007997284b50: unknown     |    1 (   0) x    1 |    1 |        1 | 0x300 | placeholder
0xb400007997285450: unknown     | 3840 (   0) x 1080 |    1 |        1 | 0x1a00 | FramebufferSurface
0xb400007997285e70: unknown     | 3840 (   0) x 1080 |    1 |        1 | 0x1a00 | FramebufferSurface
0xb4000079972884b0: unknown     | 1920 (   0) x 1080 |    1 |        1 | 0x40000000000b00 | com.android.launcher3/com.android.launcher3.uioverrides.QuickstepLauncher#0
0xb40000799728a670: unknown     | 1920 (   0) x 1080 |    1 |        1 | 0x40000000000b00 | com.android.launcher3/com.android.launcher3.uioverrides.QuickstepLauncher#0
0xb40000799728b870: unknown     | 1280 (   0) x 1280 |    1 |        2 | 0x40000000000b00 | com.android.systemui.ImageWallpaper#0
0xb40000799728bbd0:   10.50 KiB |   44 (  48) x   56 |    1 |        1 | 0x8933 | Sprite#0
0xb40000799728e9f0: unknown     | 1920 (   0) x 1080 |    1 |        1 | 0x40000000000b00 | com.android.launcher3/com.android.launcher3.uioverrides.QuickstepLauncher#0
Total allocated by GraphicBufferAllocator (estimate): 10.50 KB

Imported gralloc buffers:
+ name:BLAST Consumer0, id:940597837995, size:3.6e+03KiB, w/h:1280x720, usage: 0x830, req fmt:1, fourcc/mod:875708993/0, compressed: false
	planes: R/G/B/A:	 w/h:1280x720, stride:5120 bytes, size:3686400
+ name:Sprite#0, id:940597837992, size:10KiB, w/h:44x56, usage: 0x8933, req fmt:1, fourcc/mod:875708993/0, compressed: false
	planes: R/G/B/A:	 w/h:44x56, stride:192 bytes, size:10752
+ name:com.android.launcher3/com.android.launcher3.uioverrides.QuickstepLauncher#0, id:940597837978, size:8.3e+03KiB, w/h:1920x1080, usage: 0x40000000000b00, req fmt:1, fourcc/mod:875708993/576460752303423489, compressed: true
	planes: R/G/B/A:	 w/h:1920x1088, stride:7680 bytes, size:8486912
+ name:com.android.launcher3/com.android.launcher3.uioverrides.QuickstepLauncher#0, id:940597837977, size:8.3e+03KiB, w/h:1920x1080, usage: 0x40000000000b00, req fmt:1, fourcc/mod:875708993/576460752303423489, compressed: true
	planes: R/G/B/A:	 w/h:1920x1088, stride:7680 bytes, size:8486912
+ name:com.android.launcher3/com.android.launcher3.uioverrides.QuickstepLauncher#0, id:940597837975, size:8.3e+03KiB, w/h:1920x1080, usage: 0x40000000000b00, req fmt:1, fourcc/mod:875708993/576460752303423489, compressed: true
	planes: R/G/B/A:	 w/h:1920x1088, stride:7680 bytes, size:8486912
+ name:FramebufferSurface, id:940597837949, size:1.7e+04KiB, w/h:3840x1080, usage: 0x1a00, req fmt:1, fourcc/mod:875708993/576460752303423489, compressed: true
	planes: R/G/B/A:	 w/h:3840x1088, stride:15360 bytes, size:16972800
+ name:com.android.systemui.ImageWallpaper#0, id:940597837964, size:6.5e+03KiB, w/h:1280x1280, usage: 0x40000000000b00, req fmt:2, fourcc/mod:875709016/576460752303423489, compressed: true
	planes: R/G/B:	 w/h:1280x1280, stride:5120 bytes, size:6656000
+ name:FramebufferSurface, id:940597837948, size:1.7e+04KiB, w/h:3840x1080, usage: 0x1a00, req fmt:1, fourcc/mod:875708993/576460752303423489, compressed: true
	planes: R/G/B/A:	 w/h:3840x1088, stride:15360 bytes, size:16972800
+ name:FramebufferSurface, id:940597837947, size:1.7e+04KiB, w/h:3840x1080, usage: 0x1a00, req fmt:1, fourcc/mod:875708993/576460752303423489, compressed: true
	planes: R/G/B/A:	 w/h:3840x1088, stride:15360 bytes, size:16972800
+ name:placeholder, id:940597837946, size:0.062KiB, w/h:1x1, usage: 0x300, req fmt:1, fourcc/mod:875708993/0, compressed: false
	planes: R/G/B/A:	 w/h:1x1, stride:64 bytes, size:64
Total imported by gralloc: 8.5e+04KiB

第一部分显示由 SurfaceFlinger 分配的 GraphicBuffer，注意使用 BLASTBufferQueue 不会显示在此处，它由应用端分配
第二部分显示 SurfaceFlinger 使用过得 GraphicBuffer，注意如果使用 BLASTBufferQueue 会显示在此处，如上面的"BLAST Consumer0"

按照相互的关联，显示 mDrawingState 中所有的 Layer

+ ContainerLayer (Root#0)
  Region TransparentRegion (this=0 count=0)
  Region VisibleRegion (this=0 count=0)
  Region SurfaceDamageRegion (this=0 count=0)
      layerStack=   0, z=        0, pos=(0,0), size=(   0,   0), crop=[  0,   0,  -1,  -1], cornerRadius=0.000000, isProtected=0, isOpaque=0, invalidate=1, dataspace=Default, defaultPixelFormat=Unknown/None, backgroundBlurRadius=0, color=(0.000,0.000,0.000,1.000), flags=0x00000002, tr=[0.00, 0.00][0.00, 0.00]
      parent=none
      zOrderRelativeOf=none
      activeBuffer=[   0x   0:   0,Unknown/None], tr=[0.00, 0.00][0.00, 0.00] queued-frames=0, mRefreshPending=0, metadata={}, cornerRadiusCrop=[0.00, 0.00, 0.00, 0.00],  shadowRadius=0.000, 
+ ContainerLayer (mWindowContainers#0)
  Region TransparentRegion (this=0 count=0)
  Region VisibleRegion (this=0 count=0)
  Region SurfaceDamageRegion (this=0 count=0)
      layerStack=   0, z=        0, pos=(0,0), size=(   0,   0), crop=[  0,   0,  -1,  -1], cornerRadius=0.000000, isProtected=0, isOpaque=0, invalidate=1, dataspace=Default, defaultPixelFormat=Unknown/None, backgroundBlurRadius=0, color=(0.000,0.000,0.000,1.000), flags=0x00000000, tr=[0.00, 0.00][0.00, 0.00]
      parent=Root#0
      zOrderRelativeOf=none
      activeBuffer=[   0x   0:   0,Unknown/None], tr=[0.00, 0.00][0.00, 0.00] queued-frames=0, mRefreshPending=0, metadata={}, cornerRadiusCrop=[0.00, 0.00, 0.00, 0.00],  shadowRadius=0.000,