OpenGL® Programming Guide: The Official Guide to Learning OpenGL®, Version 4.5 with SPIR-V, Ninth Edition

Appendix F. Floating-Point Formats for Textures, Framebuffers, and Renderbuffers

This appendix describes the floating-point formats used for pixel storage in framebuffers and renderbuffers, and texel storage in textures. It has the following major sections:

• “Reduced-Precision Floating-Point Values”

• “16-Bit Floating-Point Values”

• “10- and 11-Bit Unsigned Floating-Point Values”

Reduced-Precision Floating-Point Values

In addition to the normal 32-bit single-precision floating-point values you normally use when you declare a GLfloat in your application, OpenGL supports reduced-precision floating-point representations for storing data more compactly than its 32-bit representation. In many instances, your floating-point data may not require ...