GPU Pro 4

2

VI

Real-Time JPEG Compression

Using DirectCompute

Stefan Petersson

Transporting frames within a DirectX application to a target destination is a

nontrivial task. For example, both low latency and available bandwidth are im-

portant factors when streaming image frames via a network connection. By using

the technique presented in this chapter, JPEG image data can be encoded in real

time. The resulting data may thereafter be streamed to a network destination,

saved as an image file, or appended to a movie sequence.

2.1 Introduction

Since the advent of DirectCompute, it is possible to execute more general algo-

rithms using Direct3D with full cross-vendor