Canvas Path QEMU Code Size Report¶

Commit: 1fe189eb
Date: 2026-05-21T16:04:33.734670
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¶

这是“渲染场景引入成本”报告，不是业务应用最终成本报告。
各场景之间存在依赖与重叠，不能简单把增量直接相加。
Delta Text 是主要代码体积指标；Delta ROM = Delta Text + Delta Rodata 更适合作为 flash 成本口径。
这份报告只覆盖普通 canvas/render path；HQ line/circle/arc 请结合 hq_size_report.md 一起看。

Baseline¶

Variant	Text	Rodata	Data	Bss	Total ROM
BASELINE	14652	596	1368	7600	15248

Increment Summary¶

Scene	Delta Text	Delta Rodata	Delta Data	Delta Bss	Delta ROM
RECT_STROKE	+1012	+0	+0	+4	+1012
RECT_FILL	+780	+0	+0	+4	+780
ROUND_RECT_STROKE	+7136	+724	+0	+4	+7860
ROUND_RECT_FILL	+3604	+724	+0	+4	+4328
TRIANGLE_STROKE	+4140	+0	+0	+4	+4140
TRIANGLE_FILL	+4184	+0	+0	+4	+4184
CIRCLE_BASIC_STROKE	+6096	+724	+0	+4	+6820
CIRCLE_BASIC_FILL	+3136	+724	+0	+4	+3860
ARC_BASIC_STROKE	+12856	+1844	+0	+4	+14700
ARC_BASIC_FILL	+6880	+1844	+0	+4	+8724
LINE	+3984	+0	+0	+4	+3984
POLYLINE	+4496	+12	+0	+4	+4508
GRADIENT_RECT	+3188	+60	+0	+4	+3248
GRADIENT_ROUND_RECT	+6844	+804	+0	+4	+7648
GRADIENT_CIRCLE	+5120	+60	+0	+4	+5180
MASK_CIRCLE	+8	+0	+0	+4	+8
MASK_ROUND_RECT	+8	+0	+0	+4	+8
MASK_IMAGE	+8	+0	+0	+4	+8
IMAGE_DRAW	+10540	+108	+0	+12	+10648
IMAGE_RESIZE	+10588	+108	+0	+12	+10696
IMAGE_TINT	+10600	+108	+0	+12	+10708
IMAGE_ROTATE	+16164	+476	+0	+12	+16640
TEXT_ROTATE	+21000	+6432	+0	+12	+27432
RLE_DRAW	+8	+0	+0	+4	+8
QOI_DRAW	+8480	+148	+0	+12	+8628
ALL_CANVAS_PATHS	+74156	+8228	+0	+12	+82384

Scene Definition¶

Scene	Representative Functions	Description
RECT_STROKE	`egui_canvas_draw_rectangle`	Rectangle stroke path.
RECT_FILL	`egui_canvas_draw_rectangle_fill`	Rectangle fill path.
ROUND_RECT_STROKE	`egui_canvas_draw_round_rectangle`	Round-rectangle stroke path.
ROUND_RECT_FILL	`egui_canvas_draw_round_rectangle_fill`	Round-rectangle fill path.
TRIANGLE_STROKE	`egui_canvas_draw_triangle`	Triangle stroke path.
TRIANGLE_FILL	`egui_canvas_draw_triangle_fill`	Triangle fill path.
CIRCLE_BASIC_STROKE	`egui_canvas_draw_circle_basic`	Basic circle stroke path.
CIRCLE_BASIC_FILL	`egui_canvas_draw_circle_fill_basic`	Basic circle fill path, including circle LUT cost.
ARC_BASIC_STROKE	`egui_canvas_draw_arc_basic`	Basic arc stroke path.
ARC_BASIC_FILL	`egui_canvas_draw_arc_fill_basic`	Basic arc fill path.
LINE	`egui_canvas_draw_line`	Basic line path.
POLYLINE	`egui_canvas_draw_polyline`	Basic polyline path.
GRADIENT_RECT	`egui_canvas_draw_rectangle_fill_gradient`	Gradient rectangle fill path.
GRADIENT_ROUND_RECT	`egui_canvas_draw_round_rectangle_fill_gradient`	Gradient round-rectangle fill path.
GRADIENT_CIRCLE	`egui_canvas_draw_circle_fill_gradient`	Gradient circle fill path.
MASK_CIRCLE	`egui_mask_circle_init` `egui_canvas_set_mask`	Circle mask scene.
MASK_ROUND_RECT	`egui_mask_round_rectangle_init` `egui_canvas_set_mask`	Round-rectangle mask scene.
MASK_IMAGE	`egui_mask_image_init` `egui_mask_image_set_image` `egui_canvas_set_mask`	Image mask scene.
IMAGE_DRAW	`egui_canvas_draw_image`	Standard image draw path.
IMAGE_RESIZE	`egui_canvas_draw_image_resize`	Standard image resize path.
IMAGE_TINT	`egui_canvas_draw_image_color`	Standard image tint path.
IMAGE_ROTATE	`egui_canvas_draw_image_rotate`	Image rotation and transform scene.
TEXT_ROTATE	`egui_canvas_draw_text_rotate`	Rotated text draw scene.
RLE_DRAW	`egui_canvas_draw_image(rle)`	RLE codec draw path.
QOI_DRAW	`egui_canvas_draw_image(qoi)`	QOI codec draw path.
ALL_CANVAS_PATHS	`all representative probe functions`	All representative canvas path probe scenes enabled together.

Detailed Variants¶

Variant	Probe Config	Text	Rodata	Data	Bss	Total ROM
BASELINE	`(none)`	14652	596	1368	7600	15248
RECT_STROKE	`-DEGUI_SIZE_PROBE_RECT_STROKE_PATH=1`	15664	596	1368	7604	16260
RECT_FILL	`-DEGUI_SIZE_PROBE_RECT_FILL_PATH=1`	15432	596	1368	7604	16028
ROUND_RECT_STROKE	`-DEGUI_SIZE_PROBE_ROUND_RECT_STROKE_PATH=1`	21788	1320	1368	7604	23108
ROUND_RECT_FILL	`-DEGUI_SIZE_PROBE_ROUND_RECT_FILL_PATH=1`	18256	1320	1368	7604	19576
TRIANGLE_STROKE	`-DEGUI_SIZE_PROBE_TRIANGLE_STROKE_PATH=1`	18792	596	1368	7604	19388
TRIANGLE_FILL	`-DEGUI_SIZE_PROBE_TRIANGLE_FILL_PATH=1`	18836	596	1368	7604	19432
CIRCLE_BASIC_STROKE	`-DEGUI_SIZE_PROBE_CIRCLE_BASIC_STROKE_PATH=1`	20748	1320	1368	7604	22068
CIRCLE_BASIC_FILL	`-DEGUI_SIZE_PROBE_CIRCLE_BASIC_FILL_PATH=1`	17788	1320	1368	7604	19108
ARC_BASIC_STROKE	`-DEGUI_SIZE_PROBE_ARC_BASIC_STROKE_PATH=1`	27508	2440	1368	7604	29948
ARC_BASIC_FILL	`-DEGUI_SIZE_PROBE_ARC_BASIC_FILL_PATH=1`	21532	2440	1368	7604	23972
LINE	`-DEGUI_SIZE_PROBE_LINE_PATH=1`	18636	596	1368	7604	19232
POLYLINE	`-DEGUI_SIZE_PROBE_POLYLINE_PATH=1`	19148	608	1368	7604	19756
GRADIENT_RECT	`-DEGUI_SIZE_PROBE_GRADIENT_RECT_PATH=1`	17840	656	1368	7604	18496
GRADIENT_ROUND_RECT	`-DEGUI_SIZE_PROBE_GRADIENT_ROUND_RECT_PATH=1`	21496	1400	1368	7604	22896
GRADIENT_CIRCLE	`-DEGUI_SIZE_PROBE_GRADIENT_CIRCLE_PATH=1`	19772	656	1368	7604	20428
MASK_CIRCLE	`-DEGUI_SIZE_PROBE_MASK_CIRCLE_PATH=1`	14660	596	1368	7604	15256
MASK_ROUND_RECT	`-DEGUI_SIZE_PROBE_MASK_ROUND_RECT_PATH=1`	14660	596	1368	7604	15256
MASK_IMAGE	`-DEGUI_SIZE_PROBE_MASK_IMAGE_PATH=1`	14660	596	1368	7604	15256
IMAGE_DRAW	`-DEGUI_SIZE_PROBE_IMAGE_DRAW_PATH=1`	25192	704	1368	7612	25896
IMAGE_RESIZE	`-DEGUI_SIZE_PROBE_IMAGE_RESIZE_PATH=1`	25240	704	1368	7612	25944
IMAGE_TINT	`-DEGUI_SIZE_PROBE_IMAGE_TINT_PATH=1`	25252	704	1368	7612	25956
IMAGE_ROTATE	`-DEGUI_SIZE_PROBE_IMAGE_ROTATE_PATH=1`	30816	1072	1368	7612	31888
TEXT_ROTATE	`-DEGUI_SIZE_PROBE_TEXT_ROTATE_PATH=1`	35652	7028	1368	7612	42680
RLE_DRAW	`-DEGUI_SIZE_PROBE_RLE_DRAW_PATH=1`	14660	596	1368	7604	15256
QOI_DRAW	`-DEGUI_SIZE_PROBE_QOI_DRAW_PATH=1`	23132	744	1368	7612	23876
ALL_CANVAS_PATHS	-DEGUI_SIZE_PROBE_RECT_STROKE_PATH=1 -DEGUI_SIZE_PROBE_RECT_FILL_PATH=1 -DEGUI_SIZE_PROBE_ROUND_RECT_STROKE_PATH=1 -DEGUI_SIZE_PROBE_ROUND_RECT_FILL_PATH=1 -DEGUI_SIZE_PROBE_TRIANGLE_STROKE_PATH=1 -DEGUI_SIZE_PROBE_TRIANGLE_FILL_PATH=1 -DEGUI_SIZE_PROBE_CIRCLE_BASIC_STROKE_PATH=1 -DEGUI_SIZE_PROBE_CIRCLE_BASIC_FILL_PATH=1 -DEGUI_SIZE_PROBE_ARC_BASIC_STROKE_PATH=1 -DEGUI_SIZE_PROBE_ARC_BASIC_FILL_PATH=1 -DEGUI_SIZE_PROBE_LINE_PATH=1 -DEGUI_SIZE_PROBE_POLYLINE_PATH=1 -DEGUI_SIZE_PROBE_GRADIENT_RECT_PATH=1 -DEGUI_SIZE_PROBE_GRADIENT_ROUND_RECT_PATH=1 -DEGUI_SIZE_PROBE_GRADIENT_CIRCLE_PATH=1 -DEGUI_SIZE_PROBE_MASK_CIRCLE_PATH=1 -DEGUI_SIZE_PROBE_MASK_ROUND_RECT_PATH=1 -DEGUI_SIZE_PROBE_MASK_IMAGE_PATH=1 -DEGUI_SIZE_PROBE_IMAGE_DRAW_PATH=1 -DEGUI_SIZE_PROBE_IMAGE_RESIZE_PATH=1 -DEGUI_SIZE_PROBE_IMAGE_TINT_PATH=1 -DEGUI_SIZE_PROBE_IMAGE_ROTATE_PATH=1 -DEGUI_SIZE_PROBE_TEXT_ROTATE_PATH=1 -DEGUI_SIZE_PROBE_RLE_DRAW_PATH=1 -DEGUI_SIZE_PROBE_QOI_DRAW_PATH=1	88808	8824	1368	7612	97632

Reproduce¶

python scripts/size_analysis/main.py canvas-path-size-to-doc

Raw JSON is written to output/canvas_path_size_results.json.