Multi-Level Lookup Tables for Vector Graphics Tessellation
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Solution Overview
Problem
Conventional tessellation methods in vector graphics processing result in large memory footprints, leading to increased bandwidth requirements, low cache hit rates, and decreased rendering performance due to inefficient data retrieval and storage methods.
Innovation Solution
Implementing a tessellation data processing method that uses multi-level lookup tables based on intersection coordinates to store effective data, reducing memory footprint and enhancing rendering performance by caching addresses of information tables and discarding unnecessary intersections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional tessellation methods store all pixel data and intersection information in memory, then complete rendering information is available, but memory footprint becomes large and bandwidth requirements increase
Solution Approach 1:
The patent segments the memory storage structure into multiple levels: a first memory level stores only intersection coordinate information, while a second memory level stores detailed pixel data. This segmentation allows the system to reduce overall memory footprint by storing only essential intersection data in the first level, while maintaining complete rendering information in the second level when needed.
Solution Approach 2:
The patent extracts and stores only the critical intersection coordinate information in the first memory level, separating it from the complete pixel data. This extraction principle allows the system to minimize memory usage by storing only the minimal necessary data (intersection coordinates) in the first level, while the detailed pixel information remains in the second level.
2Reliability
If all intersection data is stored and retrieved from memory, then accurate rendering is achieved, but data retrieval time increases and rendering performance decreases
Solution Approach 1:
The patent performs preliminary action by pre-calculating and storing only the essential intersection coordinate information in the first memory level before the actual rendering process. This preliminary storage of key coordinate data eliminates the need for time-consuming searches through complete pixel data during rendering, thereby reducing data retrieval time while maintaining rendering accuracy.
Solution Approach 2:
The patent creates a simplified copy of the intersection data in the first memory level that contains only coordinate information necessary for rendering. This copy allows the system to quickly access intersection points without retrieving the complete detailed pixel data from the second memory level, thus reducing retrieval time while preserving rendering accuracy.
3Speed
If cache memory is added to reduce memory interaction, then access speed improves, but cache hit rate remains low and system bandwidth requirements stay high
Solution Approach 1:
The patent applies local quality by creating a specialized first memory level that is locally optimized to store only intersection coordinate information. This local optimization ensures that the most frequently accessed data (intersection coordinates) is stored in a dedicated, easily accessible location, improving data access speed for rendering operations while reducing the bandwidth required for transferring complete pixel data.
Data Source
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AI summary
The present invention provides a tessellation data processing method, system, media, and vector graphics processing device; the method includes: according to specified coordinates of intersections, creating one or more levels of cache tables, wherein the intersections result from vector lines generated by tessellation intersecting lines parallel to an x-axis or y-axis-; storing in a content table addresses of information tables in memory, storing in a first level cache table an address of the content table in the memory, and storing an address of the first level cache table in the memory in a cache table one level higher than the first level cache table. The tessellation data processing method, system, media, and vector graphics processing device of the present invention store effective data in multi-level lookup tables based on coordinates of intersections, effectively reduce memory footprint, support multi-channel tessellation processing, and enhance the performance of vector graphics rendering.