IssueTracker

Thanks! Over to Nader to take a detailed look!

I believe we should dup b/187839528 and this ticket, what do you think Nader?

Yes definitely. Thanks Siyamed!

In the meantime there maybe other ways to work around it. The main issue is that surface implicitly creates a seaprate layer which impacts the behavior of the blending modes. Being ale to just set the Brush on the paint directly would work around this in the most straightforward way.

The issue is that the content depends on transparent pixels existing in the scene before the gradient is applied.

To address this you can do the following in order to force rasterization of the graphicsLayer into a separate buffer using CompositingStrategy.Offscreen, then only draw the gradient on top of the pixels rendered by the text Composable.

       Text("Hello World!", modifier =
        // Use offscreen compositing strategy so that there are transparent pixels in the offscreen buffer
        // to blend against with the SrcIn blend mode
            Modifier.graphicsLayer(compositingStrategy = CompositingStrategy.Offscreen).drawWithCache {
                val brush = Brush.horizontalGradient(listOf(Color.Red, Color.Blue, Color.Cyan, Color.Magenta, Color.Green))
                onDrawWithContent {
                    drawContent()
                    drawRect(brush, blendMode = BlendMode.SrcIn)
                }
            }
        )

Here is the crash: (notice the last line: Tombstone written to: /data/tombstones/tombstone_48) So apparently there is a tombstone file created.

--------- beginning of crash
01-19 10:48:42.423 32601 32693 F libc    : Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0 in tid 32693 (arch_disk_io_3), pid 32601 (roidtv.launcher)
01-19 10:48:42.581   341   560 D libdolbyms12: scheduler_run  sch_state:1, count:219517200
01-19 10:48:42.585   981   981 I crash_dump32: obtaining output fd from tombstoned, type: kDebuggerdTombstone
01-19 10:48:42.588   308   308 I tombstoned: received crash request for pid 32693
01-19 10:48:42.588   981   981 I crash_dump32: performing dump of process 32601 (target tid = 32693)
01-19 10:48:42.607   981   981 F DEBUG   : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
01-19 10:48:42.607   981   981 F DEBUG   : Build fingerprint: 'SFR/SFR_CONNECT_TV_V3_SDMC/DV8945-KFS:11/RT/20221031:user/release-keys'
01-19 10:48:42.607   981   981 F DEBUG   : Revision: '0'
01-19 10:48:42.607   981   981 F DEBUG   : ABI: 'arm'
01-19 10:48:42.608   981   981 F DEBUG   : Timestamp: 2023-01-19 10:48:42+0100
01-19 10:48:42.608   981   981 F DEBUG   : pid: 32601, tid: 32693, name: arch_disk_io_3  >>> com.sfr.androidtv.launcher <<<
01-19 10:48:42.608   981   981 F DEBUG   : uid: 10016
01-19 10:48:42.608   981   981 F DEBUG   : signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0
01-19 10:48:42.608   981   981 F DEBUG   : Cause: null pointer dereference
01-19 10:48:42.608   981   981 F DEBUG   :     r0  e55f8310  r1  0000000b  r2  e4f86c90  r3  e4f86d10
01-19 10:48:42.608   981   981 F DEBUG   :     r4  e4f86d10  r5  e4f86c90  r6  e55fb578  r7  00000000
01-19 10:48:42.608   981   981 F DEBUG   :     r8  08580c20  r9  e4f86d10  r10 08581844  r11 0000000b
01-19 10:48:42.608   981   981 F DEBUG   :     ip  0857f974  sp  e4f86b60  lr  0857cecf  pc  e52968cc
01-19 10:48:42.624   346  1263 I android.hardware.bluetooth@1.0-service: wole_config_cback, status = 0, opcode=0xfe54
01-19 10:48:43.143     0     0 E         : [585404.369447@0]  usb usb2-port1: Cannot enable. Maybe the USB cable is bad?
01-19 10:48:43.143     0     0 W         : [585404.369511@0]  usb usb2-port1: config error
01-19 10:48:43.271   981   981 F DEBUG   : backtrace:
01-19 10:48:43.272   981   981 F DEBUG   :       #00 pc 001968cc  /apex/com.android.art/lib/libart.so (art::FaultManager::HandleFault(int, siginfo*, void*)+20) (BuildId: 1c620ca3e021ad7bbeaa77ad9dc89b68)
01-19 10:48:43.272   981   981 F DEBUG   :       #01 pc 00003ecd  /system/bin/app_process32 (art::SignalChain::Handler(int, siginfo*, void*)+364) (BuildId: 39ef0132f187b3fadb08c99e947127a4)
01-19 10:48:43.273   981   981 F DEBUG   :       #02 pc 000337a0  /apex/com.android.runtime/lib/bionic/libc.so (__restore_rt) (BuildId: 2f5972775a7fc26200e46b0b35135f74)
01-19 10:48:43.273   981   981 F DEBUG   :       #03 pc 001474ba  /apex/com.android.art/lib/libart.so (art::mirror::Class::AllocObject(art::Thread*)+10) (BuildId: 1c620ca3e021ad7bbeaa77ad9dc89b68)
01-19 10:48:43.273   981   981 F DEBUG   :       #04 pc 00187173  /apex/com.android.art/lib/libart.so (art::(anonymous namespace)::ProcessEncodedAnnotation(art::(anonymous namespace)::ClassData const&, unsigned char const**) (.llvm.4213307385609005519)+1598) (BuildId: 1c620ca3e021ad7bbeaa77ad9dc89b68)
01-19 10:48:43.274   981   981 F DEBUG   :       #05 pc 0018158f  /apex/com.android.art/lib/libart.so (art::annotations::GetAnnotationForField(art::ArtField*, art::Handle<art::mirror::Class>)+266) (BuildId: 1c620ca3e021ad7bbeaa77ad9dc89b68)
01-19 10:48:43.274   981   981 F DEBUG   :       #06 pc 00393503  /apex/com.android.art/lib/libart.so (art::Field_getAnnotationNative(_JNIEnv*, _jobject*, _jclass*)+130) (BuildId: 1c620ca3e021ad7bbeaa77ad9dc89b68)
01-19 10:48:43.274   981   981 F DEBUG   :       #07 pc 000825c5  /apex/com.android.art/javalib/arm/boot.oat (art_jni_trampoline+92) (BuildId: 6ca63848c7fb35587f6067bdc3426553da20ada5)
01-19 10:48:43.274   981   981 F DEBUG   :       #08 pc 0200203d  /memfd:jit-cache (deleted) (offset 0x2000000)
01-19 10:48:43.379   341   560 D libdolbyms12: scheduler_run  sch_state:1, count:219517500
01-19 10:48:43.424   346  1263 I android.hardware.bluetooth@1.0-service: wole_config_cback, status = 0, opcode=0xfe54
01-19 10:48:43.675   901   901 I ThermalService: CPU temperatures: [53.500004]
01-19 10:48:43.679     0     0 D [585404.909125@3]  logd: logdr: UID=10016 GID=10016 PID=981 n tail=50 logMask=8 pid=32601 start=0ns timeout=0ns
01-19 10:48:43.683     0     0 D [585404.911797@3]  logd: logdr: UID=10016 GID=10016 PID=981 n tail=50 logMask=1 pid=32601 start=0ns timeout=0ns
01-19 10:48:43.979     0     0 D [585405.205779@3]  logd: logdr: UID=10016 GID=10016 PID=981 n tail=0 logMask=8 pid=32601 start=0ns timeout=0ns
01-19 10:48:43.979     0     0 D [585405.208335@3]  logd: logdr: UID=10016 GID=10016 PID=981 n tail=0 logMask=1 pid=32601 start=0ns timeout=0ns
01-19 10:48:44.023   308   308 E tombstoned: Tombstone written to: /data/tombstones/tombstone_48

jreck@google.com : It looks like the crash is inside ART. Can you see what may be going on ?

Sorry, the comment in #7 was for my colleague. Thank you for the tombstone file.

I see that you are using Dolphin. Would you be willing to see if the problem is also in Flamingo: https://developer.android.com/studio/preview

I expect that the same problem will happen, since it is probably related to the device. But perhaps we get more information.

OK, thank you for checking Flamingo.

Could you check how much Storage is used on the device ?
In settings there should be a Storage entry.

Hi Thomas, What do we need to reproduce the problem ?