Module qa_stub 

Pass: _qa..._qh stub injection.

Structs

QaUses 🔒

Constants

QA_LETTERS 🔒

Letters a..h map to the 8 four-channel groups packing q1..q32.

Functions

find_brace_after 🔒

Locate the byte position immediately after the first { at or past start. shader_body { … }’s parser hands us a span starting at the keyword, not the brace, so this helper bridges the gap. Returns None when no { is found (malformed source — we skip injection in that case).

inject_qa_stub 🔒

_qa/_qb/…/_qh are MD2 runtime-defined aliases that pack the 32 q1..q32 evaluator channels into 8 × float4 (_qa = float4(q1, q2, q3, q4), _qb = float4(q5, …), etc.). User comp shaders read them directly, typically via mul(uv, float2x2(_qb)) for kaleidoscope rotation.

qa_letter_index 🔒

Returns Some(bit_index) if name is one of _qa..._qh.

scan_block_for_qa 🔒

scan_expr_for_qa 🔒

scan_stmt_for_qa 🔒