Extract Canvas draw_merge plane setup helper

This commit is contained in:
2026-06-13 11:53:42 +02:00
parent 3f8c25d78b
commit bec8d4623d
5 changed files with 72 additions and 20 deletions

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@@ -18,6 +18,11 @@ agent or engineer to remove them without reconstructing context from chat.
## Recent Reductions
- 2026-06-13: DEBT-0036 was narrowed again. `Canvas::draw_merge()` now routes
per-plane merge-target clear, blend-state gating, and optional checkerboard
prepass through `execute_legacy_canvas_draw_merge_plane_setup(...)`;
per-plane iteration, per-layer branch selection, and concrete framebuffer
ownership remain in the legacy Canvas path.
- 2026-06-13: DEBT-0036 was narrowed again. `Canvas::draw_merge()` now routes
the standard per-layer texture-alpha pass through
`execute_legacy_canvas_draw_merge_layer_texture(...)`; per-plane iteration,