Canvas Path QEMU Code Size Report

• Commit: 09190fa

• Date: 2026-04-02T11:13:30.470551

• Build target: APP=HelloSizeAnalysis APP_SUB=canvas_path_probe PORT=qemu CPU_ARCH=cortex-m0plus

• Measurement method: compile a dedicated probe app, then rewrite the app-local probe config header to force-link a single canvas scene.

• Scope: static qemu ELF sections only (.text/.rodata/.data/.bss). No runtime heap/stack is measured here.

说明

• 这份报告回答的是“某条 canvas 渲染路径被链接进来后，会额外增加多少 .text/.rodata/.data/.bss”。

• 这不是业务应用的最终体积报告，最终交付仍然要看 size_report.md。

• 各场景之间存在共享依赖，不能把多个场景的增量简单相加。

• Delta Text 更适合看代码体积；Delta ROM = Delta Text + Delta Rodata 更适合作为 flash 成本口径。

• HQ 的 line/circle/arc 路径单独统计在 hq_size_report.md，这里不重复。

Baseline

Variant	Text	Rodata	Data	Bss	Total ROM
BASELINE	11420	568	24	5920	11988

Increment Summary

Scene	Delta Text	Delta Rodata	Delta Data	Delta Bss	Delta ROM
RECT_FILL	+0	+0	+0	+0	+0

Scene Definition

Scene	Representative Functions	Description
RECT_FILL	egui_canvas_draw_rectangle_fill	矩形填充路径。

Detailed Variants

Variant	Probe Config	Text	Rodata	Data	Bss	Total ROM
BASELINE	(none)	11420	568	24	5920	11988
RECT_FILL	-DEGUI_SIZE_PROBE_RECT_FILL_PATH=1	11420	568	24	5920	11988

Reproduce

python scripts/size_analysis/canvas_path_size_to_doc.py

Raw JSON is written to output/canvas_path_size_results.json.