WebGL OES_texture_float Khronos Ratified Extension Specification

Name

OES_texture_float

WebGL working group (public_webgl 'at' khronos.org)

Members of the WebGL working group

Last modified date: May 15, 2013
Revision: 6

WebGL extension #1

Written against the WebGL API 1.0 specification.

This extension exposes the OES_texture_float functionality to WebGL.

The following WebGL-specific behavioral changes apply:

Consult the above extension for documentation, issues and new functions and enumerants.

When this extension is enabled:

The texImage2D and texSubImage2D entry points taking ArrayBufferView are extended to accept Float32Array with the pixel type FLOAT.
The texImage2D and texSubImage2D entry points taking ImageData, HTMLImageElement, HTMLCanvasElement and HTMLVideoElement are extended to accept the pixel type FLOAT.
Implementations supporting float rendering via this extension will implicitly enable the WEBGL_color_buffer_float extension and follow its requirements. This ensures correct behavior when a texture with pixel type FLOAT is attached to an FBO. Although this feature has historically been allowed, new implementations should not implicitly support float rendering and applications should be modified to explicitly enable WEBGL_color_buffer_float.

 interface OES_texture_float { };

Revision 1, 2010/11/29

Revision 2, 2010/12/13

Extended to support pixel type FLOAT for texImage2D and texSubImage2D entry points taking ImageData, HTMLImageElement, HTMLCanvasElement and HTMLVideoElement.

Revision 3, 2011/09/12

Added optional ability to use a FLOAT type texture as an FBO's color attachment.

Revision 4, 2012/01/03

Revision 5, 2012/12/04

Specify that implementations supporting FLOAT color attachments implicitly enable WEBGL_color_buffer_float.

Revision 6, 2013/05/15