MobileGL/docs/ci/ci-cleanup-log.md

CI cleanup log

Every removal or replacement of a CI test, gate or lane is logged here with a one-line reason; decisions to keep a red case (and fix the code or the tooling instead) are logged too, so the next reader can see why a check still exists. Started in P13 (2026-10-06). The rule: a check is removed only when it is superseded or no longer relevant (tied to the pull build, or a finished migration-phase audit), never to hide a real bug. Goldens change only when the GL spec proves them wrong.

Removals

Date	Check	Workflow / job	Reason	Successor
—	(none yet)

Kept after investigation

minecraft-1.17-main-menu-854 (Test retrace / retrace-split / retrace-verify, APK retrace), 2026-10-06

• Symptom: every lane, both backends, SSIM 0.0186 against the golden; the frame is Minecraft's red loading-screen colour. Local repro on WSL llvmpipe: same SSIM, monolith and inproc.
• Root cause: the trace was captured on an implementation that gave shaders and programs overlapping names (shader 1 and program 1 live at once, likewise shader 5 / program 5, calls 159-209). GL 4.6 core and ES 3.2 §7.1 put shader and program objects in one shared name space, so a conformant implementation never hands out such a pair. Since 5a0f13fdf / 168808d1a (2026-10-01/02) MobileGL advertises GL_ARB_shader_objects, and apitrace's glretrace then resolves every shader and program name through one ARB handle map (_handleARB_map): program 1 overwrote shader 1's entry, glAttachShader(1, 1) attached a program name (GL_INVALID_OPERATION at call 170), the blit program linked without a vertex shader, and nothing after it drew.
• Classification: (b) retrace tooling - not a MobileGL bug and not a bad golden. The core entry points are typed (glAttachShader(program, shader)), so mapping each argument through its own type's map is lossless even when the capture's names collide; only the untyped *ObjectARB handle calls need the shared map.
• Fix: MobileGL-Dev/apitrace 45843686 (branch mobilegl/android-trace-replay): typed GLprogram / GLshader arguments resolve through _program_map / _shader_map first and fall back to the ARB handle map only for names created by glCreate*ObjectARB; typed creators record both maps. Submodule bumped in the same MobileGL commit. Local: 1.17 passes on DirectGLES (monolith, inproc) and DirectVulkan (lavapipe).
• Decision: keep the case. With typed mapping it checks GL-level correctness of MobileGL like any other fixture; the namespace overlap is a property of the capture that a spec-portable replay can absorb.
• Side note (not changed): MobileGL advertises GL_ARB_shader_objects while its glCreateShaderObjectARB / glCreateProgramObjectARB entry points are stubs (MG_Impl/GLImpl/Exporting/Definitions.cpp). The string was added on purpose for KWin; whether to implement the ARB handle entry points is a separate decision.

Infrastructure fixes (no check removed)

Date	What was red	Cause	Fix
2026-10-06	every ctest invocation in integration / verify / split jobs exited 8 after the tests passed (integration-verify, integration-split*, integration (inproc), spawn_lane_parity.py)	PipeCatalogueSourceRoot.cmake (a CTest include file) used if(... IN_LIST ...); CTest scripts run without policy CMP0057 on the pinned CMake 3.31.10, so the include errored	use list(FIND) instead (MobileGL/MG_Test/Pipe/CMakeLists.txt)
2026-10-06	TcpServer.Start.P8aUnlocatedIoBlocks failed in 0.07 s on integration (monolith)	the loopback TCP endpoints (40613, knob lanes 41613-41617) sat inside Linux's ephemeral port range; with thousands of loopback client connections in the lane, an outgoing socket can own the port the supervisor binds	default endpoint moved to 30613 (knob lanes 31613-31617), below 32768