System and method for reducing frenquency breadth need of transmitting graph data

Abstract

Various embodiments for reducing external bandwidth requirements for transferring graphics data are included. One embodiment includes a system for reducing the external bandwidth requirements for transferring graphics data comprising a prediction error calculator configured to generate a prediction error matrix for a pixel tile of z-coordinate data, a bit length calculator configured to calculate the number of bits needed to store the prediction error matrix, a data encoder configured to encode the prediction error matrix into a compressed block and a packer configured to shift the compressed block in a single operation to an external memory location.

Description

technical field [0001] The present invention relates to image data compression, more particularly to a z-axis data compression and encoding system and method. Background technique [0002] As known by those skilled in the art, 3D computer graphics in art and science are generated or rendered from 2D images of 3D objects, and then presented on a display device such as a cathode ray tube display or a liquid crystal display. This object may be a simple geometric primitive (primitive), such as a point, line, triangle, or polygon. Many complex objects can be represented by a series of connected plane polygons and rendered on the display device. For example, the objects can be represented by a series of connected plane triangles. All geometric primitives may ultimately be represented by a vertex or a set of vertices. For example, coordinates (x, y, z) may define a point, or an endpoint of a line, or a corner of a polygon. [0003] To generate a set of data for a 2D projection of...

AI Technical Summary

Problems solved by technology

However, the main problem is that a large triangle primitive with a relatively large pixel count is not conducive to caching in the graphics chip, so the method of providing caching becomes almost ineffective

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