Windows: experimental Xbox Developer Mode (UWP) target by shai-almog · Pull Request #6140 · codenameone/CodenameOne

shai-almog · 2026-10-30T15:56:31Z

Experimental Xbox Developer Mode target for the native Windows port, as a first step toward gaming consoles.

windows.xbox=true builds the port as a UWP app:

cn1_windows_corewindow.cpp: CoreApplication/CoreWindow host, D3D11 + Direct2D flip-model swap chain, pointer and gamepad input, view-thread safe area and title.
Compiled against the app partition, linked to WindowsApp.lib only with /APPCONTAINER: the link proves every import exists in the container.
Desktop-only natives are compiled out and stubbed by scripts/gen-windows-uwp-stubs.py (--check in CI).
Gamepad D-pad/stick/A/B map to game actions and back; the console's visible bounds are the display safe area.
Builder: UWP manifest (Windows.Universal, no full trust), MSIX via makemsix, signed; a self-signed dev certificate is created when none is supplied.

Verification:

windows-cross-compile.yml cross-builds desktop and UWP exes on Linux, creates the dev cert with the builder's own code, then on a Windows runner packs, signs, installs and launches the app as a real UWP activation and waits for a marker it writes after its first frame.
Controller input and TV overscan need a console and are not verified; documented as experimental (Working-With-Windows + new Gaming consoles appendix).

🤖 Generated with Claude Code

windows.xbox=true builds the native Windows port as a UWP app for an Xbox in Developer Mode: a CoreWindow host rendering through a D3D11/D2D swap chain, compiled against the app partition and linked to WindowsApp.lib alone, with desktop-only natives stubbed by scripts/gen-windows-uwp-stubs.py. Gamepad keys map to game actions and back; the console's visible bounds are the safe area. The builder packs a signed MSIX, generating a dev certificate when none is given. CI cross-builds it and installs + launches it on a Windows runner. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Safe area and title are thread-bound to the view: insets are computed on the view thread and cached, the title goes through CoreDispatcher.RunAsync. Stubs whose 0 means success (desktopWindowCreate, printDocument) answer -1. A supplied certificate needs windows.msix.publisher, or the package would never install. CI signs the package with the builder's own development certificate. Docs mark the target experimental and add a gaming consoles appendix. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

github-actions · 2026-10-30T16:58:43Z

Cloudflare Preview

URL: https://pr-6140-website-preview.codenameone.pages.dev
Branch: pr-6140-website-preview

…ection Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

github-actions · 2026-10-30T18:45:24Z

✅ Continuous Quality Report

Test & Coverage

✅ Tests: 14811 total, 0 failed, 161 skipped
📊 Line coverage: 65.77% [HTML preview] [Download]
- Lowest covered classes
  - com.codename1.io.zip.ZipArchiveOutputStream – 0.00%
  - com.codename1.gaming.level.GameSceneView – 0.00%
  - com.codename1.security.NativeCryptoEngine – 0.00%
  - com.codename1.crash.CrashProtection – 0.00%
  - com.codename1.mapping.JsonValues – 0.00%
  - com.codename1.payment.CommerceManager – 0.00%
  - com.codename1.io.outbox.Outbox – 0.00%
  - com.codename1.security.CertificateRequest – 0.00%
  - com.codename1.wearable.WearableMessage – 0.00%
  - com.codename1.ui.plaf.GlassLensBlend – 0.00%

Static Analysis

SpotBugs [Report archive]
- ✅ ByteCodeTranslator: 0 findings (no issues)
- ✅ android: 0 findings (no issues)
- ✅ android-compat: 0 findings (no issues)
- ✅ android-res-compiler: 0 findings (no issues)
- ✅ backend: 0 findings (no issues)
- ✅ backend-test: 0 findings (no issues)
- ✅ build-engine: 0 findings (no issues)
- ✅ build-hint-catalog: 0 findings (no issues)
- ✅ build-hint-tools: 0 findings (no issues)
- ✅ codenameone-gradle-plugin: 0 findings (no issues)
- ✅ codenameone-maven-plugin: 0 findings (no issues)
- ✅ compose-compat: 0 findings (no issues)
- ✅ core-unittests: 0 findings (no issues)
- ✅ desktop-compat-runtime: 0 findings (no issues)
- ✅ fxml-compiler: 0 findings (no issues)
- ✅ ios: 0 findings (no issues)
- ✅ javac: 0 findings (no issues)
- ✅ javafx-compat: 0 findings (no issues)
- ✅ project-model: 0 findings (no issues)
- ✅ swing-compat: 0 findings (no issues)
✅ PMD: 0 findings (no issues) [Report archive]
✅ Checkstyle: 0 findings (no issues) [Report archive]

Generated automatically by the PR CI workflow.

shai-almog · 2026-10-30T19:18:16Z

Compared 231 screenshots: 231 matched.
✅ JavaScript-port screenshot tests passed.

github-actions · 2026-10-30T19:37:15Z

✅ ByteCodeTranslator Quality Report

Test & Coverage

✅ Tests: 901 total, 0 failed, 55 skipped

Benchmark Results

Execution Time: 12167 ms
Hotspots (Top 20 sampled methods):
- 11.56% com.codename1.tools.translator.IteratorEscape.mangle (206 samples)
- 9.54% java.lang.System.identityHashCode (170 samples)
- 7.01% java.util.ArrayList.indexOf (125 samples)
- 4.77% java.lang.Object.hashCode (85 samples)
- 3.42% java.lang.StringBuilder.append (61 samples)
- 2.08% com.codename1.tools.translator.IteratorEscape.ctorOnlyStoresParamsIntoThis (37 samples)
- 2.08% com.codename1.tools.translator.BytecodeMethod.equals (37 samples)
- 1.96% java.util.HashMap.hash (35 samples)
- 1.85% com.codename1.tools.translator.bytecodes.Invoke.resolveDirectTarget (33 samples)
- 1.68% com.codename1.tools.translator.ByteCodeClass.markDependencies (30 samples)
- 1.63% java.io.FileOutputStream.writeBytes (29 samples)
- 1.63% com.codename1.tools.translator.ByteCodeClass.hasDeclaredMethod (29 samples)
- 1.29% java.lang.String.equals (23 samples)
- 1.29% com.codename1.tools.translator.bytecodes.Invoke.findMethodUp (23 samples)
- 1.12% java.util.HashMap.putVal (20 samples)
- 1.07% java.util.AbstractCollection.containsAll (19 samples)
- 1.01% com.codename1.tools.translator.Parser.cullMethods (18 samples)
- 1.01% com.codename1.tools.translator.BytecodeMethod.optimize (18 samples)
- 0.95% com.codename1.tools.translator.JavascriptReachability.enqueueResolved (17 samples)
- 0.95% com.codename1.tools.translator.BytecodeMethod.updateInlinableFieldDependencies (17 samples)
⚠️ Coverage report not generated.

Static Analysis

✅ SpotBugs: no findings (report was not generated by the build).
⚠️ PMD report not generated.
⚠️ Checkstyle report not generated.

Generated automatically by the PR CI workflow.

github-actions · 2026-10-30T22:47:39Z

Flutter vs Codename One

No benchmark results were produced.

github-actions · 2026-10-30T23:08:16Z

Developer Guide build artifacts are available for download from this workflow run:

Developer Guide quality checks:

AsciiDoc linter: No issues found (report)
Vale: No alerts found (report)
Paragraph capitalization: No paragraph capitalization issues (report)
LanguageTool: No grammar matches (report)
Image references: No unused images detected (report)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

shai-almog · 2026-10-31T00:33:01Z

Compared 195 screenshots: 195 matched.

Native Android coverage

📊 Line coverage: 19.19% (56038/292047 lines covered) [HTML preview] (artifact android-coverage-report, jacocoAndroidReport/html/index.html)
- Other counters: instruction 18.14% (269997/1488151), branch 12.40% (19633/158314), complexity 10.36% (15811/152567), method 15.72% (11379/72383), class 27.88% (2235/8017)
- Lowest covered classes
  - kotlin.collections.unsigned.kotlin.collections.unsigned.UArraysKt___UArraysKt – 0.00% (0/2396 lines covered)
  - org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.ClassReader – 0.00% (0/1524 lines covered)
  - androidx.compose.runtime.androidx.compose.runtime.LinkComposer – 0.00% (0/1430 lines covered)
  - org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.MethodWriter – 0.00% (0/922 lines covered)
  - kotlinx.coroutines.channels.kotlinx.coroutines.channels.BufferedChannel – 0.00% (0/863 lines covered)
  - kotlin.sequences.kotlin.sequences.SequencesKt___SequencesKt – 0.00% (0/744 lines covered)
  - com.google.common.cache.com.google.common.cache.LocalCache$Segment – 0.00% (0/726 lines covered)
  - okio.okio.Buffer – 0.00% (0/687 lines covered)
  - kotlin.text.kotlin.text.StringsKt___StringsKt – 0.00% (0/630 lines covered)
  - com.codename1.androidcompat.rt.com.codename1.androidcompat.rt.TextXmlPullParser – 0.00% (0/623 lines covered)

✅ Native Android screenshot tests passed.

Native Android coverage

📊 Line coverage: 19.19% (56038/292047 lines covered) [HTML preview] (artifact android-coverage-report, jacocoAndroidReport/html/index.html)
- Other counters: instruction 18.14% (269997/1488151), branch 12.40% (19633/158314), complexity 10.36% (15811/152567), method 15.72% (11379/72383), class 27.88% (2235/8017)
- Lowest covered classes
  - kotlin.collections.unsigned.kotlin.collections.unsigned.UArraysKt___UArraysKt – 0.00% (0/2396 lines covered)
  - org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.ClassReader – 0.00% (0/1524 lines covered)
  - androidx.compose.runtime.androidx.compose.runtime.LinkComposer – 0.00% (0/1430 lines covered)
  - org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.MethodWriter – 0.00% (0/922 lines covered)
  - kotlinx.coroutines.channels.kotlinx.coroutines.channels.BufferedChannel – 0.00% (0/863 lines covered)
  - kotlin.sequences.kotlin.sequences.SequencesKt___SequencesKt – 0.00% (0/744 lines covered)
  - com.google.common.cache.com.google.common.cache.LocalCache$Segment – 0.00% (0/726 lines covered)
  - okio.okio.Buffer – 0.00% (0/687 lines covered)
  - kotlin.text.kotlin.text.StringsKt___StringsKt – 0.00% (0/630 lines covered)
  - com.codename1.androidcompat.rt.com.codename1.androidcompat.rt.TextXmlPullParser – 0.00% (0/623 lines covered)

Benchmark Results

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	scalar fallback (no native SIMD)
SIMD int-add (64K x300)	java 188ms / native 130ms = 1.4x speedup
SIMD float-mul (64K x300)	java 134ms / native 117ms = 1.1x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	gated to scalar (CPU autovectorizes scalar; explicit SIMD not beneficial here)
Base64 CN1 encode	72.000 ms
Base64 CN1 decode	84.000 ms
Base64 native encode	400.000 ms
Base64 encode ratio (CN1/native)	0.180x (82.0% faster)
Base64 native decode	278.000 ms
Base64 decode ratio (CN1/native)	0.302x (69.8% faster)
Image encode benchmark status	skipped (SIMD unsupported)

shai-almog · 2026-10-31T02:27:23Z

Compared 210 screenshots: 210 matched.
Native Windows port, REAL shipping pipeline: the hellocodenameone screenshot suite rendered by a binary CROSS-COMPILED on Linux (clang-cl + xwin, WebView2 linked) and RUN on a Windows x64 runner. Compared against the in-repo baseline in scripts/windows/screenshots.

Benchmark Results

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 44ms / native 3ms = 14.6x speedup
SIMD float-mul (64K x300)	java 43ms / native 3ms = 14.3x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 native bridge	unavailable (CN1 + SIMD + image benchmarks only)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	gated to scalar (CPU autovectorizes scalar; explicit SIMD not beneficial here)
Base64 CN1 encode	61.000 ms
Base64 CN1 decode	72.000 ms
Base64 SIMD encode	91.000 ms
Base64 encode ratio (SIMD/CN1)	1.492x (49.2% slower)
Base64 SIMD decode	76.000 ms
Base64 decode ratio (SIMD/CN1)	1.056x (5.6% slower)
Image encode benchmark iterations	100
Image createMask (SIMD off)	6.000 ms
Image createMask (SIMD on)	4.000 ms
Image createMask ratio (SIMD on/off)	0.667x (33.3% faster)
Image applyMask (SIMD off)	22.000 ms
Image applyMask (SIMD on)	25.000 ms
Image applyMask ratio (SIMD on/off)	1.136x (13.6% slower)
Image modifyAlpha (SIMD off)	28.000 ms
Image modifyAlpha (SIMD on)	18.000 ms
Image modifyAlpha ratio (SIMD on/off)	0.643x (35.7% faster)
Image modifyAlpha removeColor (SIMD off)	28.000 ms
Image modifyAlpha removeColor (SIMD on)	12.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	0.429x (57.1% faster)

shai-almog · 2026-10-31T02:51:42Z

Compared 210 screenshots: 210 matched.
Native Windows port (x64 / Intel-AMD): full hellocodenameone screenshot suite rendered offscreen with Direct2D/DirectWrite, plus the real benchmarks (base64 native/CN1/SIMD, image createMask/applyMask/modifyAlpha/PNG/JPEG, SSE2 SIMD kernels). Compared against the in-repo baseline in scripts/windows/screenshots.

Benchmark Results

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 50ms / native 4ms = 12.5x speedup
SIMD float-mul (64K x300)	java 51ms / native 4ms = 12.7x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 native bridge	unavailable (CN1 + SIMD + image benchmarks only)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	gated to scalar (CPU autovectorizes scalar; explicit SIMD not beneficial here)
Base64 CN1 encode	63.000 ms
Base64 CN1 decode	74.000 ms
Base64 SIMD encode	92.000 ms
Base64 encode ratio (SIMD/CN1)	1.460x (46.0% slower)
Base64 SIMD decode	80.000 ms
Base64 decode ratio (SIMD/CN1)	1.081x (8.1% slower)
Image encode benchmark iterations	100
Image createMask (SIMD off)	7.000 ms
Image createMask (SIMD on)	3.000 ms
Image createMask ratio (SIMD on/off)	0.429x (57.1% faster)
Image applyMask (SIMD off)	31.000 ms
Image applyMask (SIMD on)	41.000 ms
Image applyMask ratio (SIMD on/off)	1.323x (32.3% slower)
Image modifyAlpha (SIMD off)	42.000 ms
Image modifyAlpha (SIMD on)	20.000 ms
Image modifyAlpha ratio (SIMD on/off)	0.476x (52.4% faster)
Image modifyAlpha removeColor (SIMD off)	31.000 ms
Image modifyAlpha removeColor (SIMD on)	13.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	0.419x (58.1% faster)

ParparVM vs HotSpot (JDK 25): Windows x64

Runner CPU: AMD64 Family 25 Model 17 Stepping 1, AuthenticAMD (baseline windows-x64@amd64-family-25-model-17-authenticamd)

Ratios are ParparVM / JDK 25: below 1.00x ParparVM is faster (time) or smaller (RAM). Median of 5 interleaved, paired rounds; every run's output was verified. A ratio more than 20% (time) / 25% (RAM) above its baseline in vm/selfhost/perf-baseline/ is a regression and fails; one that far below is an improvement, reported but not failed (a row whose calibration runs were noisier carries a wider tolerance), and for RAM the change must also exceed 0.05x in absolute terms. Both run unpinned on all of the runner's CPUs, with their own default thread counts.

Benchmark	Cores	Time	RAM	Status
hello (WinHelloMain)	4	1.41x (base 1.38x, +2.6%)	0.69x (base 0.82x, -15.8%)	ok
translator (self)	4	0.83x (base 0.89x, -6.7%)	0.51x (base 0.55x, -7.5%)	ok
intArithmetic	4	1.10x (base 1.10x, +0.4%)	0.06x (base 0.06x, -0.9%)	ok
longArithmetic	4	1.08x (base 1.08x, +0.0%)	0.06x (base 0.06x, +1.2%)	ok
mathTranscendental	4	0.85x (base 0.85x, +0.4%)	0.06x (base 0.06x, +4.0%)	ok
arraySequential	4	1.81x (base 1.72x, +5.6%)	0.38x (base 0.38x, +0.2%)	ok
arrayRandom	4	1.03x (base 1.01x, +1.4%)	0.23x (base 0.23x, +0.5%)	ok
objectAllocation	4	1.25x (base 1.25x, -0.1%)	0.28x (base 0.29x, -3.6%)	ok
valueEscape	4	0.10x (base 0.10x, -1.3%)	0.05x (base 0.04x, +3.6%)	ok
hashMapChurn	4	1.37x (base 1.39x, -1.8%)	0.10x (base 0.10x, +4.3%)	ok
stringBuilding	4	1.40x (base 1.36x, +3.5%)	0.32x (base 0.28x, +16.0%)	ok
recursion	4	1.38x (base 1.43x, -3.5%)	0.06x (base 0.06x, +2.9%)	ok
quicksort	4	1.11x (base 1.11x, -0.6%)	0.12x (base 0.12x, +0.6%)	ok

Result: no regression

shai-almog · 2026-10-31T03:23:37Z

Compared 196 screenshots: 196 matched.
✅ Native Mac screenshot tests passed.

Benchmark Results

VM Translation Time: 0 seconds
Compilation Time: 770 seconds

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 60ms / native 2ms = 30.0x speedup
SIMD float-mul (64K x300)	java 61ms / native 3ms = 20.3x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 native bridge	unavailable (CN1 + SIMD + image benchmarks only)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	active (NEON-accelerated)
Base64 CN1 encode	56.000 ms
Base64 CN1 decode	67.000 ms
Image encode benchmark iterations	100
Image createMask (SIMD off)	8.000 ms
Image createMask (SIMD on)	5.000 ms
Image createMask ratio (SIMD on/off)	0.625x (37.5% faster)
Image applyMask (SIMD off)	61.000 ms
Image applyMask (SIMD on)	67.000 ms
Image applyMask ratio (SIMD on/off)	1.098x (9.8% slower)
Image modifyAlpha (SIMD off)	81.000 ms
Image modifyAlpha (SIMD on)	54.000 ms
Image modifyAlpha ratio (SIMD on/off)	0.667x (33.3% faster)
Image modifyAlpha removeColor (SIMD off)	72.000 ms
Image modifyAlpha removeColor (SIMD on)	50.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	0.694x (30.6% faster)

ParparVM vs HotSpot (JDK 25): macOS arm64

Runner CPU: Apple M1 (Virtual) (baseline macos-arm64)

Ratios are ParparVM / JDK 25: below 1.00x ParparVM is faster (time) or smaller (RAM). Median of 5 interleaved, paired rounds; every run's output was verified. A ratio more than 20% (time) / 25% (RAM) above its baseline in vm/selfhost/perf-baseline/ is a regression and fails; one that far below is an improvement, reported but not failed (a row whose calibration runs were noisier carries a wider tolerance), and for RAM the change must also exceed 0.05x in absolute terms. Both run unpinned on all of the runner's CPUs, with their own default thread counts.

Benchmark	Cores	Time	RAM	Status
hello (HelloCodenameOne)	3	1.08x (base 0.96x, +12.6%)	0.84x (base 0.93x, -9.2%)	ok
translator (self)	3	0.59x (base 0.62x, -4.8%)	0.75x (base 0.78x, -4.0%)	ok
intArithmetic	3	1.05x (base 1.03x, +2.1%)	0.12x (base 0.12x, +1.6%)	ok
longArithmetic	3	0.99x (base 1.03x, -3.3%)	0.12x (base 0.07x, +66.3%)	ok
mathTranscendental	3	1.01x (base 1.01x, -0.0%)	0.12x (base 0.12x, +0.5%)	ok
arraySequential	3	0.44x (base 0.42x, +5.4%)	0.53x (base 0.53x, +0.3%)	ok
arrayRandom	3	0.98x (base 0.99x, -1.3%)	0.32x (base 0.32x, +0.0%)	ok
objectAllocation	3	1.05x (base 1.11x, -5.5%)	0.82x (base 0.72x, +13.0%)	ok
valueEscape	3	0.51x (base 0.51x, +1.1%)	0.08x (base 0.09x, -10.2%)	ok
hashMapChurn	3	1.09x (base 1.18x, -7.5%)	0.07x (base 0.07x, +4.1%)	ok
stringBuilding	3	0.91x (base 0.84x, +7.6%)	0.46x (base 0.46x, -0.3%)	ok
recursion	3	1.23x (base 1.24x, -0.2%)	0.12x (base 0.12x, +0.7%)	ok
quicksort	3	0.99x (base 1.01x, -2.0%)	0.11x (base 0.11x, +1.6%)	ok

Result: no regression

shai-almog · 2026-10-31T03:27:01Z

Compared 210 screenshots: 210 matched.
Native Linux port (x64), GTK3/Cairo/Pango, ParparVM bytecode-to-C (no JVM): the hellocodenameone screenshot suite rendered by a native ELF built + run on the GitHub x64 runner. Baseline: scripts/linux/screenshots.

ParparVM vs HotSpot (JDK 25): Linux x64

Runner CPU: AMD EPYC 9V45 96-Core Processor (baseline linux-x64@amd-epyc-9v45-96-core-processor)

Ratios are ParparVM / JDK 25: below 1.00x ParparVM is faster (time) or smaller (RAM). Median of 5 interleaved, paired rounds; every run's output was verified. A ratio more than 20% (time) / 25% (RAM) above its baseline in vm/selfhost/perf-baseline/ is a regression and fails; one that far below is an improvement, reported but not failed (a row whose calibration runs were noisier carries a wider tolerance), and for RAM the change must also exceed 0.05x in absolute terms. Both run unpinned on all of the runner's CPUs, with their own default thread counts.

Benchmark	Cores	Time	RAM	Status
hello (LinuxHelloMain)	4	1.00x (base 0.92x, +9.0%)	0.86x (base 0.84x, +2.9%)	ok
translator (self)	4	0.62x (base 0.64x, -3.8%)	0.58x (base 0.55x, +6.3%)	ok
intArithmetic	4	1.00x (base 1.00x, +0.1%)	0.04x (base 0.06x, -33.3%)	ok
longArithmetic	4	0.99x (base 0.99x, -0.0%)	0.04x (base 0.07x, -47.7%)	ok
mathTranscendental	4	1.19x (base 1.20x, -0.5%)	0.04x (base 0.06x, -28.3%)	ok
arraySequential	4	3.02x (base 2.91x, +3.8%)	0.36x (base 0.36x, +1.1%)	ok
arrayRandom	4	0.98x (base 1.04x, -5.5%)	0.20x (base 0.23x, -10.8%)	ok
objectAllocation	4	1.53x (base 1.61x, -5.0%)	0.23x (base 0.24x, -2.7%)	ok
valueEscape	4	0.10x (base 0.12x, -15.9%)	0.03x (base 0.04x, -19.6%)	ok
hashMapChurn	4	1.41x (base 1.31x, +7.7%)	0.09x (base 0.09x, +7.6%)	ok
stringBuilding	4	1.53x (base 1.58x, -3.2%)	0.26x (base 0.22x, +20.0%)	ok
recursion	4	1.34x (base 1.34x, +0.1%)	0.04x (base 0.08x, -48.0%)	ok
quicksort	4	1.05x (base 1.06x, -1.3%)	0.10x (base 0.11x, -11.0%)	ok

Result: no regression

shai-almog · 2026-10-31T03:27:07Z

Compared 210 screenshots: 210 matched.
Native Linux port (arm64), GTK3/Cairo/Pango, ParparVM bytecode-to-C (no JVM): the hellocodenameone screenshot suite rendered by a native ELF built + run on the GitHub arm64 runner. Baseline: scripts/linux/screenshots-arm.

ParparVM vs HotSpot (JDK 25): Linux arm64

Runner CPU: Neoverse-N2 (baseline linux-arm64@neoverse-n2)

Ratios are ParparVM / JDK 25: below 1.00x ParparVM is faster (time) or smaller (RAM). Median of 5 interleaved, paired rounds; every run's output was verified. A ratio more than 20% (time) / 25% (RAM) above its baseline in vm/selfhost/perf-baseline/ is a regression and fails; one that far below is an improvement, reported but not failed (a row whose calibration runs were noisier carries a wider tolerance), and for RAM the change must also exceed 0.05x in absolute terms. Both run unpinned on all of the runner's CPUs, with their own default thread counts.

Benchmark	Cores	Time	RAM	Status
hello (LinuxHelloMain)	4	1.00x (base 1.02x, -1.8%)	0.77x (base 0.66x, +16.8%)	ok
translator (self)	4	0.78x (base 0.70x, +11.0%)	0.44x (base 0.43x, +2.9%)	ok
intArithmetic	4	1.04x (base 1.04x, -0.0%)	0.03x (base 0.03x, +4.5%)	ok
longArithmetic	4	0.79x (base 0.79x, -0.0%)	0.03x (base 0.03x, +5.2%)	ok
mathTranscendental	4	1.10x (base 1.10x, -0.2%)	0.04x (base 0.03x, +9.5%)	ok
arraySequential	4	0.40x (base 0.36x, +11.7%)	0.37x (base 0.37x, +0.2%)	ok
arrayRandom	4	0.94x (base 0.94x, +0.4%)	0.20x (base 0.20x, +0.7%)	ok
objectAllocation	4	1.92x (base 1.77x, +8.4%)	0.41x (base 0.37x, +10.0%)	ok
valueEscape	4	0.51x (base 0.51x, -0.1%)	0.03x (base 0.03x, +6.2%)	ok
hashMapChurn	4	0.82x (base 0.84x, -2.7%)	0.13x (base 0.12x, +4.6%)	ok
stringBuilding	4	1.51x (base 1.57x, -3.5%)	0.26x (base 0.26x, +0.5%)	ok
recursion	4	1.54x (base 1.43x, +7.6%)	0.04x (base 0.04x, +3.1%)	ok
quicksort	4	1.00x (base 0.99x, +0.3%)	0.09x (base 0.09x, +1.1%)	ok

Result: no regression

shai-almog · 2026-10-31T06:00:21Z

Compared 210 screenshots: 210 matched.
Native Windows port (arm64 / Apple Silicon - Arm): full hellocodenameone screenshot suite rendered offscreen with Direct2D/DirectWrite, plus the real benchmarks (base64 native/CN1/SIMD, image createMask/applyMask/modifyAlpha/PNG/JPEG, NEON SIMD kernels). Compared against the in-repo baseline in scripts/windows/screenshots.

Benchmark Results

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 54ms / native 3ms = 18.0x speedup
SIMD float-mul (64K x300)	java 53ms / native 3ms = 17.6x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 native bridge	unavailable (CN1 + SIMD + image benchmarks only)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	gated to scalar (CPU autovectorizes scalar; explicit SIMD not beneficial here)
Base64 CN1 encode	60.000 ms
Base64 CN1 decode	70.000 ms
Base64 SIMD encode	78.000 ms
Base64 encode ratio (SIMD/CN1)	1.300x (30.0% slower)
Base64 SIMD decode	73.000 ms
Base64 decode ratio (SIMD/CN1)	1.043x (4.3% slower)
Image encode benchmark iterations	100
Image createMask (SIMD off)	5.000 ms
Image createMask (SIMD on)	2.000 ms
Image createMask ratio (SIMD on/off)	0.400x (60.0% faster)
Image applyMask (SIMD off)	17.000 ms
Image applyMask (SIMD on)	16.000 ms
Image applyMask ratio (SIMD on/off)	0.941x (5.9% faster)
Image modifyAlpha (SIMD off)	15.000 ms
Image modifyAlpha (SIMD on)	7.000 ms
Image modifyAlpha ratio (SIMD on/off)	0.467x (53.3% faster)
Image modifyAlpha removeColor (SIMD off)	16.000 ms
Image modifyAlpha removeColor (SIMD on)	11.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	0.688x (31.3% faster)

ParparVM vs HotSpot (JDK 25): Windows arm64

Runner CPU: ARMv8 (64-bit) Family 8 Model D49 Revision 0, MICROSOFT CORPORATION (baseline windows-arm64@armv8-64-bit-family-8-model-d49-microsoft-corporation)

Ratios are ParparVM / JDK 25: below 1.00x ParparVM is faster (time) or smaller (RAM). Median of 5 interleaved, paired rounds; every run's output was verified. A ratio more than 20% (time) / 25% (RAM) above its baseline in vm/selfhost/perf-baseline/ is a regression and fails; one that far below is an improvement, reported but not failed (a row whose calibration runs were noisier carries a wider tolerance), and for RAM the change must also exceed 0.05x in absolute terms. Both run unpinned on all of the runner's CPUs, with their own default thread counts.

Benchmark	Cores	Time	RAM	Status
hello (WinHelloMain)	4	1.04x (base 1.11x, -5.7%)	0.73x (base 0.75x, -2.9%)	ok
translator (self)	4	0.87x (base 0.84x, +3.3%)	0.49x (base 0.51x, -4.0%)	ok
intArithmetic	4	1.04x (base 1.04x, -0.0%)	0.06x (base 0.06x, +3.8%)	ok
longArithmetic	4	0.79x (base 0.80x, -0.3%)	0.06x (base 0.06x, +4.2%)	ok
mathTranscendental	4	0.72x (base 0.72x, -0.5%)	0.07x (base 0.06x, +2.4%)	ok
arraySequential	4	0.35x (base 0.46x, -22.7%)	0.39x (base 0.39x, +0.1%)	ok
arrayRandom	4	0.94x (base 0.94x, +0.5%)	0.23x (base 0.23x, +0.4%)	ok
objectAllocation	4	1.71x (base 1.82x, -6.1%)	0.30x (base 0.43x, -31.3%)	ok
valueEscape	4	0.76x (base 0.76x, +0.0%)	0.05x (base 0.05x, +3.7%)	ok
hashMapChurn	4	0.98x (base 0.98x, -0.6%)	0.12x (base 0.12x, -2.5%)	ok
stringBuilding	4	1.52x (base 1.43x, +6.9%)	0.27x (base 0.27x, -0.2%)	ok
recursion	4	1.42x (base 1.46x, -3.0%)	0.07x (base 0.07x, +1.9%)	ok
quicksort	4	1.00x (base 1.00x, +0.2%)	0.12x (base 0.12x, +0.9%)	ok

Result: no regression

shai-almog · 2026-10-31T10:13:51Z

Compared 192 screenshots: 192 matched.
✅ Native Mac screenshot tests passed.

Benchmark Results

VM Translation Time: 0 seconds
Compilation Time: 968 seconds

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 66ms / native 7ms = 9.4x speedup
SIMD float-mul (64K x300)	java 59ms / native 2ms = 29.5x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	active (NEON-accelerated)
Base64 CN1 encode	96.000 ms
Base64 CN1 decode	66.000 ms
Base64 native encode	991.000 ms
Base64 encode ratio (CN1/native)	0.097x (90.3% faster)
Base64 native decode	415.000 ms
Base64 decode ratio (CN1/native)	0.159x (84.1% faster)
Base64 SIMD encode	72.000 ms
Base64 encode ratio (SIMD/CN1)	0.750x (25.0% faster)
Base64 SIMD decode	86.000 ms
Base64 decode ratio (SIMD/CN1)	1.303x (30.3% slower)
Base64 encode ratio (SIMD/native)	0.073x (92.7% faster)
Base64 decode ratio (SIMD/native)	0.207x (79.3% faster)
Image encode benchmark iterations	100
Image createMask (SIMD off)	11.000 ms
Image createMask (SIMD on)	4.000 ms
Image createMask ratio (SIMD on/off)	0.364x (63.6% faster)
Image applyMask (SIMD off)	67.000 ms
Image applyMask (SIMD on)	54.000 ms
Image applyMask ratio (SIMD on/off)	0.806x (19.4% faster)
Image modifyAlpha (SIMD off)	93.000 ms
Image modifyAlpha (SIMD on)	69.000 ms
Image modifyAlpha ratio (SIMD on/off)	0.742x (25.8% faster)
Image modifyAlpha removeColor (SIMD off)	87.000 ms
Image modifyAlpha removeColor (SIMD on)	75.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	0.862x (13.8% faster)

shai-almog · 2026-10-31T11:55:04Z

Apple TV (tvOS / Metal)

Compared 188 screenshots: 171 matched, 13 updated, 4 missing references.

AnimateHierarchyScreenshotTest — updated screenshot. Screenshot differs (3840x2160 px, bit depth 8).

Preview info: JPEG preview quality 50; JPEG preview quality 50; downscaled to 1344x756.
Full-resolution PNG saved as AnimateHierarchyScreenshotTest.png in workflow artifacts.
AnimateLayoutScreenshotTest — updated screenshot. Screenshot differs (3840x2160 px, bit depth 8).

Preview info: JPEG preview quality 20; JPEG preview quality 20; downscaled to 1344x756.
Full-resolution PNG saved as AnimateLayoutScreenshotTest.png in workflow artifacts.
AnimateUnlayoutScreenshotTest — updated screenshot. Screenshot differs (3840x2160 px, bit depth 8).

Preview info: JPEG preview quality 50; JPEG preview quality 50; downscaled to 1344x756.
Full-resolution PNG saved as AnimateUnlayoutScreenshotTest.png in workflow artifacts.
KmpCompatLayout — missing reference. Reference screenshot missing at /Users/runner/work/CodenameOne/CodenameOne/scripts/ios/screenshots-tv/KmpCompatLayout.png.

Preview info: JPEG preview quality 10; JPEG preview quality 10; downscaled to 1920x1080.
Full-resolution PNG saved as KmpCompatLayout.png in workflow artifacts.
KmpCompatList — missing reference. Reference screenshot missing at /Users/runner/work/CodenameOne/CodenameOne/scripts/ios/screenshots-tv/KmpCompatList.png.

Preview info: JPEG preview quality 10; JPEG preview quality 10; downscaled to 1920x1080.
Full-resolution PNG saved as KmpCompatList.png in workflow artifacts.
KmpCompatState — missing reference. Reference screenshot missing at /Users/runner/work/CodenameOne/CodenameOne/scripts/ios/screenshots-tv/KmpCompatState.png.

Preview info: JPEG preview quality 50; JPEG preview quality 50; downscaled to 1920x1080.
Full-resolution PNG saved as KmpCompatState.png in workflow artifacts.
KmpCompatTypography — missing reference. Reference screenshot missing at /Users/runner/work/CodenameOne/CodenameOne/scripts/ios/screenshots-tv/KmpCompatTypography.png.

Preview info: JPEG preview quality 20; JPEG preview quality 20; downscaled to 1920x1080.
Full-resolution PNG saved as KmpCompatTypography.png in workflow artifacts.
MorphTransitionScrolledSourceTest — updated screenshot. Screenshot differs (3840x2160 px, bit depth 8).

Preview info: JPEG preview quality 70; JPEG preview quality 70; downscaled to 1344x756.
Full-resolution PNG saved as MorphTransitionScrolledSourceTest.png in workflow artifacts.
PullToRefreshSpinnerScreenshotTest — updated screenshot. Screenshot differs (3840x2160 px, bit depth 8).

Preview info: JPEG preview quality 10; JPEG preview quality 10; downscaled to 1920x1080.
Full-resolution PNG saved as PullToRefreshSpinnerScreenshotTest.png in workflow artifacts.
SheetSlideUpAnimationScreenshotTest — updated screenshot. Screenshot differs (3840x2160 px, bit depth 8).

Preview info: JPEG preview quality 10; JPEG preview quality 10; downscaled to 1920x1080.
Full-resolution PNG saved as SheetSlideUpAnimationScreenshotTest.png in workflow artifacts.
SmoothScrollScreenshotTest — updated screenshot. Screenshot differs (3840x2160 px, bit depth 8).

Preview info: JPEG preview quality 20; JPEG preview quality 20; downscaled to 1344x756.
Full-resolution PNG saved as SmoothScrollScreenshotTest.png in workflow artifacts.
StatusBarTapDiagnosticScreenshotTest — updated screenshot. Screenshot differs (3840x2160 px, bit depth 8).

Preview info: JPEG preview quality 60; JPEG preview quality 60; downscaled to 1344x756.
Full-resolution PNG saved as StatusBarTapDiagnosticScreenshotTest.png in workflow artifacts.
StickyHeaderFadeTransitionScreenshotTest — updated screenshot. Screenshot differs (3840x2160 px, bit depth 8).

Preview info: JPEG preview quality 30; JPEG preview quality 30; downscaled to 1344x756.
Full-resolution PNG saved as StickyHeaderFadeTransitionScreenshotTest.png in workflow artifacts.
StickyHeaderScreenshotTest — updated screenshot. Screenshot differs (3840x2160 px, bit depth 8).

Preview info: JPEG preview quality 40; JPEG preview quality 40; downscaled to 1344x756.
Full-resolution PNG saved as StickyHeaderScreenshotTest.png in workflow artifacts.
StickyHeaderSlideTransitionScreenshotTest — updated screenshot. Screenshot differs (3840x2160 px, bit depth 8).

Preview info: JPEG preview quality 30; JPEG preview quality 30; downscaled to 1344x756.
Full-resolution PNG saved as StickyHeaderSlideTransitionScreenshotTest.png in workflow artifacts.
TabsAnimatedIndicatorScreenshotTest — updated screenshot. Screenshot differs (3840x2160 px, bit depth 8).

Preview info: JPEG preview quality 10; JPEG preview quality 10; downscaled to 1920x1080.
Full-resolution PNG saved as TabsAnimatedIndicatorScreenshotTest.png in workflow artifacts.
TensileBounceScreenshotTest — updated screenshot. Screenshot differs (3840x2160 px, bit depth 8).

Preview info: JPEG preview quality 30; JPEG preview quality 30; downscaled to 1344x756.
Full-resolution PNG saved as TensileBounceScreenshotTest.png in workflow artifacts.

shai-almog · 2026-10-31T12:26:22Z

No description provided.

Signed-off-by: Shai Almog <67850168+shai-almog@users.noreply.github.com>

shai-almog and others added 2 commits October 30, 2026 17:47

Xbox target: guide snippet from docs/demos, full header on crash prot…

d7d5bf6

…ection Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Xbox target: guide prose passes LanguageTool

7646fbd

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Merge branch 'master' into xbox-dev-mode-target

f6aa74e

Signed-off-by: Shai Almog <67850168+shai-almog@users.noreply.github.com>

shai-almog merged commit b2e3ebf into master Nov 1, 2026
44 of 67 checks passed

shai-almog deleted the xbox-dev-mode-target branch November 1, 2026 09:51

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