WebGL EXT_texture_norm16_dom_source Extension Proposed Specification

DO NOT IMPLEMENT!!!

Name

EXT_texture_norm16_dom_source

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

Members of the WebGL working group

Last modified date: December 03, 2020
Revision: 1

WebGL extension #NN

Written against the WebGL API 2.0 specification.

Implementations must also support the EXT_texture_norm16 extension.

When this extension is enabled:

In addition to support for ArrayBufferView in EXT_texture_norm16, the texImage2D and texSubImage2D entry points taking ImageBitmap and HTMLImageElement are extended to accept the pixel type UNSIGNED_SHORT, with associated internal format being one of R16_EXT, RG16_EXT, RGB16_EXT, and RGBA16_EXT.
Uploading 8-bit-per-channel ImageBitmap or HTMLImageElement to pixel type UNSIGNED_SHORT with associated internal format being one of R16_EXT, RG16_EXT, RGB16_EXT, and RGBA16_EXT throw a DOMException.
Uploading ImageBitmap or HTMLImageElement with fewer channels than that indicated by the internal format result in channel expansion where red, green, and blue channels are populated with 0 and alpha channel is populated with 0xffff. Uploading image sources with more channels that that indicated by the internal format would result in channel clamping.
The supported HTMLImageElement file format is PNG only at present.
When this extension is enabled, the following extensions are enabled implicitly:
- EXT_texture_norm16

Revision 1, 2020/12/03