third_party/WebKit/Source/modules/canvas2d/tools/README.md - Issue 2903053002: Removing canvas rendering mode switching feature

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Issue 2903053002: Removing canvas rendering mode switching feature (Closed)

Patch Set: fix test failure Created 3 years, 6 months ago

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1 Performance Analysis

2 ===

3

4 This directory contains tools that support a data driven approach to improve the 2D canvas graphics rendering performance. They have 2 main purposes:

5 1. Improve our understandind of the 2D canvas graphics rendering performance. Th is better understanding can yield new performance optimization ideas.

6 2. Help design and calibrate heuristics to determine the optimal rendering strat egies at run time.

7

8 Performance Data Generation

9 ---

10

11 GeneratePerformanceData.html measures the graphics rendering performance for a s eries of frames involving various 2D canvas operations in varying quantities, sc ales and shadow blur levels, including:

12 - Drawing various types of shapes with multiple different fill types.

13 - Drawing SVG and PNG images.

14 - Calling getImagedata and putImageData.

15

16 After recording performance for all the frames, it generates a CSV string that i ncludes the performance (in frames per second and time per frame) and descriptio n of every frame measured.

17

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