OpenGL® Shading Language, Second Edition

Appendix . Glossary

1D TEXTURE—

A one-dimensional (width only) array of values stored in texture memory.

2D TEXTURE—

A two-dimensional (width and height) array of values stored in texture memory.

3D TEXTURE—

A three-dimensional (width, height, and depth) array of values stored in texture memory.

ACCUMULATION BUFFER—

An OpenGL offscreen memory buffer that can accumulate the results of multiple rendering operations. This buffer often has more bits per pixel than the other offscreen memory buffers in order to support such accumulation operations.

ACTIVE ATTRIBUTES—

Attribute variables that can be accessed when a vertex shader is executed, including built-in attribute variables and user-defined attribute variables. (It is allowed to have attribute variables ...