One invocation per pixel, the same 208-bit bit-addressed pixel memory as the
golden model, instruction stream as SSBO records with TREE state resolved at
pack time. Passes C2 (synthetic raster) and C3 (the real cap7 bench bar
programs) bit-for-bit against igc_exec. First step of the GPU retarget
(GPU-RETARGET.md M1); M2 = the frame loop.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
