OES_draw_buffers_indexed WebGL extension

The OES_draw_buffers_indexed extension for WebGL 2.0 contexts allows you to control blending on a per-color basis when writing to multiple color buffers simultaneously.

Baseline Status: Achieved Widely Available on Jun 13, 2025 (Cross-browser Newly Available since Dec 13, 2022).

Desktop Browser Engine Support

Google Chrome

100

Supported

Mozilla Firefox

108

Supported

Apple Safari

16

Supported

Microsoft Edge

100

Supported

Mobile Browser Engine Support

Chrome Android

100

Firefox Android

108

Safari iOS

16

Specifications and References

Specification ↗ Feature XML ↗

MDN Browser Compat Data Keys:

api.OES_draw_buffers_indexed ↗ api.OES_draw_buffers_indexed.blendEquationSeparateiOES ↗ api.OES_draw_buffers_indexed.blendEquationiOES ↗ api.OES_draw_buffers_indexed.blendFuncSeparateiOES ↗ api.OES_draw_buffers_indexed.blendFunciOES ↗ api.OES_draw_buffers_indexed.colorMaskiOES ↗ api.OES_draw_buffers_indexed.disableiOES ↗ api.OES_draw_buffers_indexed.enableiOES ↗