Still fully synchronous - EnsureLinkJoined()/EnsureCompileJoined() are empty
inline no-ops (verified to fold away at every one of the ~1200 call sites;
this project builds without LTO) - but every read of link- or compile-produced
state now goes through a private accessor the compiler enforces, so when
stage 4 moves the bodies onto pool workers, 'which reads must join' is a
type-system fact instead of a 400-line audit.
- ProgramObject: the 31 fields ResetLinkArtifacts clears plus the 5 link
outputs it forgot (infoLog, linkedFragData{Location,Index}, the geometry
strip-capture pair) move into a nested LinkArtifacts behind Artifacts().
ResetLinkArtifacts is now a worker-safe pure clear; the link-observable
version bumps (backendState/link/uboContent) move to a GL-thread-only
BumpLinkObservableVersions() called once from Link()'s prologue and from
glProgramBinary's mandated failure - the link body never writes them, so
a stage-4 worker cannot lose an invalidation against the draw path.
- ShaderObject: compile artifacts (TShader, preprocessed source, side-channel
maps, status/log, consume-once flag) behind Compiled(); the P0b layer-1
memo trio deliberately stays outside as the future non-joining
COMPLETION_STATUS_KHR fast path.
- CompileEnv (new): a GL-thread snapshot of everything the compile pipeline
used to read live from the backend mid-parse - compute limits (the
GetIntegeri_v reach-back is gone from the worker path), advertised
extensions, device quirks, TBuiltInResource inputs. Captured lazily per
backend activation; the consume-once re-parse now runs against the same
env as the original parse.
- The GL-thread prologue / worker-body boundary is marked in Link() where
the stage sort ends; everything below is a pure function of the snapshot.
Public getter signatures unchanged - MG_Impl and both backends compile
untouched. Unit 476/476, Program suites 117/117, DirectGLES retrace 38/39 on
llvmpipe (the one failure is the known pre-existing non-CI iterationrp case;
the NVIDIA userspace driver was updated out from under the running kernel
module mid-session, so GLX there is down until a reboot).
swung0x48
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