OpenGL Insights

In-Game Video Capture with

Real-Time Texture Compression

Brano Kemen

31.1 Introduction

This chapter discusses techniques for real-time compression of images on the GPU

for use with various types of procedurally or dynamically generated images and virtual

texturing. The techniques are designed to achieve lower memory and bandwidth

requirements while providing high quality. We also describe the use of this technique

in capturing high-quality video directly from the application without significantly

impairing the overall performance.

Figure 31.1. Procedural tree generator in Outerra using real-time compression for clusters

of leaves.

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31.2 ...