Files
punktfunk/clients/apple/Tests/PunktfunkKitTests/MetalPresenterTests.swift
T
enricobuehler 8c6c9705f4 feat(apple): stage-2 default + pixel-perfect, decode robustness, UI/rumble polish
Stream reliability
- Default to the stage-2 presenter (VTDecompressionSession + CAMetalLayer): it detects
  and recovers a wedged decoder, where stage-1's AVSampleBufferDisplayLayer freezes hard
  on a lost HEVC reference frame with no app-side recovery (confirmed Apple limitation).
  Stage 1 is now a DEBUG-only presenter toggle, plus the automatic no-Metal fallback.
- Stage-2 pixel-perfect: render the drawable at the decoded size (shader stays 1:1 =
  identity) and let the layer's contentsGravity scale via the system compositor — the
  same path stage-1's videoGravity used — instead of scaling in-shader.
- Loss recovery in both pumps is now a persistent awaitingIDR want, retried until an IDR
  actually lands, so a keyframe request swallowed by the throttle can't strand a frozen
  frame; 100 ms keyframe throttle to match the Android path.
- Fix "Publishing changes from within view updates": defer the HostStore writes out of
  the .onChange(of: model.phase) callback.
- Move AVAudioSession setActive/setCategory off the main thread (async on a shared serial
  queue) to stop the UI-stall warning.

Controllers
- Rumble: capped-exponential backoff when the gamecontrollerd.haptics XPC breaks (-4811)
  so a transient server interruption self-heals instead of cascading; playsHapticsOnly so
  a controller engine doesn't join the always-active streaming audio session.
- Host cards: iPad pointer "magnet" hover effect; iPhone press scale + light haptic.

UI / design
- Ship Geist (SIL OFL 1.1) as the app font (bundled OTFs + registration), with the
  license surfaced in Acknowledgements.
- Restructure iOS/iPadOS Settings into a category NavigationSplitView; resolution wheel
  with custom-resolution entry; 10-bit HDR toggle in Display.
- Industrial host-card redesign (left-aligned, bold, brand monogram tiles).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-29 20:26:10 +02:00

22 lines
839 B
Swift

import XCTest
#if canImport(Metal)
import Metal
@testable import PunktfunkKit
final class MetalPresenterTests: XCTestCase {
/// `MetalVideoPresenter.init?()` compiles the runtime Metal shaders (the BT.709/BT.2020 YUV→RGB
/// fragment shaders plus the Catmull-Rom luma sampler). A `nil` result on a GPU-equipped host
/// means a shader failed to compile — this catches a malformed shader before it silently
/// degrades stage-2 to a stage-1 fallback on device.
func testPresenterInitCompilesShaders() throws {
guard MTLCreateSystemDefaultDevice() != nil else {
throw XCTSkip("no Metal device available in this environment")
}
XCTAssertNotNil(
MetalVideoPresenter(),
"stage-2 Metal shaders failed to compile (presenter init returned nil)")
}
}
#endif