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, 7 months ago

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diff --git a/third_party/WebKit/Source/modules/canvas2d/tools/README.md b/third_party/WebKit/Source/modules/canvas2d/tools/README.md

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-Performance Analysis

-===

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

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

-2. Help design and calibrate heuristics to determine the optimal rendering strategies at run time.

-Performance Data Generation

----

-GeneratePerformanceData.html measures the graphics rendering performance for a series of frames involving various 2D canvas operations in varying quantities, scales and shadow blur levels, including:

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

- - Drawing SVG and PNG images.

- - Calling getImagedata and putImageData.

-After recording performance for all the frames, it generates a CSV string that includes the performance (in frames per second and time per frame) and description of every frame measured.