- display lists: literal command replay through the shim state machine
(state leaks + between-list material changes get GL semantics for free);
recorded glDrawArrays EAGERLY snapshots enabled client-memory arrays at
compile time (the renderer frees them right after glEndList) and records
buffer+offset for VBO-backed pointers
- client-array draws: shared AttribSource path packs client-memory arrays
into one scratch-VBO upload and binds user VBOs with original offsets
(GL_BYTE normals / GL_UNSIGNED_BYTE colors normalized per GL1)
- glDrawElements over user VBO/IBO passes indices through untouched
(ELEMENT_ARRAY_BUFFER never touched by the shim)
- state mutators (enable/bindTexture/blendFunc/lineWidth/alphaFunc) shared
between the __wrap interceptors and list replay
Parity: 44/47 under the 0.02 floor (was 20). Verified visually: mini-board
Tier-3 composite (mask translucency + stencil-punched TH holes), stencil
hole subtraction, alpha-tested seg-end discs, COMBINE const-alpha model
transparency, and post-machining reproducing the upstream countersink bug
(walls absent, matching the native golden). Remaining 3: camera-* trio
needing the M4 GLU quadrics (+5 small-geometry false-greens they share).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
wasm/gl1: the GL1.x fixed-function emulation layer replacing the
gl_ffp_stub.c no-ops in the 3d-regression harness link. This batch:
- symbol split: 52 FFP-only entry points implemented; 10 Emscripten-owned
names intercepted via wasm-ld --wrap (sources.txt/wrapped_symbols.txt are
the shared manifests for both link sites; production hookup lands in M7)
- matrix stacks (MODELVIEW/PROJECTION, glGetFloatv readback), immediate
mode with all 8 GL1 primitive conversions, GL1-default state mirror
- full GL 1.5 Gouraud lighting uber-shader (eye-space light capture at
glLightfv time, color-material, two-side, COMBINE evaluator + alpha test
wired but inert until M3/M5)
- draw routing: FFP traffic identified by GL_VERTEX_ARRAY client state;
blit/2D-GAL draws pass through untouched
- display lists: correct glGenLists/glIsList existing-empty semantics;
recorder itself is M3 (recorded commands drop with a one-time warning)
Parity: 20/47 under the 0.02 floor, of which 12 verified genuinely
rendering (bg-gradient x2, bounding-box, half-open-cylinder, segment x2,
material x3, light x3 — eyeballed against baselines); the other 8 are
small-geometry scenarios whose missing GLU/display-list content sits under
the floor (become real in M3/M4).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
