Methods, apparatuses, and media for perspective-corrected vector graphics rendering techniques

By identifying the correlation between vector graphics and 2D canvas areas during the preprocessing stage and using GPU shaders to render the relevant parts, the problems of excessive resource consumption and blurry graphics in existing technologies are solved, achieving efficient and clear vector graphics rendering.

CN114972055BActive Publication Date: 2026-07-03APPLE INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
APPLE INC
Filing Date
2022-02-18
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing technologies for rendering vector graphics, especially in 3D environments, suffer from excessive resource consumption, and the graphics exhibit blurred edges when zoomed in.

Method used

The preprocessing stage identifies the regional correlation between vector graphics and 2D canvas, renders the relevant parts through GPU shaders to reduce the computational load on the irrelevant parts, divides the canvas into multiple regions using subdivision technology, and determines the rendering method for each region through scanline conversion algorithm.

Benefits of technology

It enables efficient rendering of vector graphics in a 3D environment, maintaining graphic clarity, especially keeping sharp edges without blurring when zoomed in, and reducing computational resource consumption.

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Abstract

This disclosure relates to perspective-corrected vector graphics rendering techniques. Various embodiments disclosed herein include devices, systems, and methods for correctly rendering perspective-corrected 2D graphics (e.g., virtual objects, text, graphics) at any angle and distance in an electronic device such as an HMD. In some embodiments, a vector graphic comprising portions defined on a 2D canvas is obtained, and the 2D canvas is divided into separate regions, each containing multiple pixels. In some embodiments, data is generated based on associating multiple regions of the 2D canvas with portions of the vector graphic, the data identifying one or more contributing portions of the vector graphic for use in rendering pixels in each of the multiple regions of the 2D canvas. In some embodiments, the data is provided to a processor for rendering the vector graphic.
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