maxInterStageShaderVariables

Maximum number of user-defined variables passed between shader stages. These are the named outputs and inputs that connect one shader stage to the next.

Check your device: WebGPU Capabilities Report.

More details: Developer Docs (MDN) Specification (W3C)

Overall Support

≥ means at least this value.

Reported value	Reports
≥ 16	100%
≥ 27	90%
≥ 30	19%
≥ 32	12%

Platform Support

Platform

Reports

Android

Reported value	Reports
≥ 16	100%
≥ 28	53%

Chromium OS

Reported value	Reports
≥ 16	100%
≥ 28	21%

iOS

Reported value	Reports
≥ 16	100%
≥ 28	99%
≥ 124	90%

Linux

Reported value	Reports
≥ 16	100%
≥ 27	49%
≥ 31	7%

Mac OS

Reported value	Reports
≥ 16	100%
≥ 28	99%
≥ 30	34%
≥ 32	25%
≥ 124	24%

Windows

Reported value	Reports
≥ 16	100%
≥ 28	100%
≥ 31	8%

Browser Support

Browser

Reports

Chrome/Chromium

Reported value	Reports
≥ 16	100%
≥ 28	86%
≥ 31	3%
≥ 124	2%

Edge

Reported value	Reports
≥ 16	100%
≥ 28	99%

Firefox

Reported value	Reports
≥ 16	100%
≥ 27	98%
≥ 30	97%
≥ 124	2%

Opera

Reported value	Reports
≥ 16	100%
≥ 28	98%
≥ 31	1%

Other

Reported value	Reports
≥ 16	100%
≥ 28	90%
≥ 31	55%
≥ 32	39%

Safari

Reported value	Reports
≥ 16	100%
≥ 28	99%
≥ 31	98%
≥ 32	87%
≥ 124	86%

Samsung Internet

Reported value	Reports
≥ 16	100%
≥ 28	42%

Vendor Values

Vendor

Reports

amd

Reported value	Reports
≥ 16	100%
≥ 28	100%
≥ 31	1%

apple

Reported value	Reports
≥ 16	100%
≥ 28	99%
≥ 31	46%
≥ 124	41%

arm

Reported value	Reports
≥ 16	100%
≥ 28	100%

google

Reported value	Reports
≥ 16	100%
≥ 28	100%

img-tec

Reported value	Reports
≥ 16	100%
≥ 28	97%

intel

Reported value	Reports
≥ 16	100%
≥ 28	82%

intelr

Reported value	Reports
≥ 16	100%
≥ 32	100%

microsoft

Reported value	Reports
≥ 16	100%
≥ 28	100%

nvidia

Reported value	Reports
≥ 16	100%
≥ 28	100%

qualcomm

Reported value	Reports
≥ 16	100%
≥ 28	2%

samsung

Reported value	Reports
≥ 16	100%
≥ 28	100%

Vendor Architecture Values

Vendor - Architecture

Reports

amd - gcn-4

Reported value	Reports
≥ 16	100%
≥ 28	100%

amd - gcn-5

Reported value	Reports
≥ 16	100%
≥ 28	100%

amd - rdna-1

Reported value	Reports
≥ 16	100%
≥ 28	99%

amd - rdna-2

Reported value	Reports
≥ 16	100%
≥ 28	100%

amd - rdna-3

Reported value	Reports
≥ 16	100%
≥ 28	100%

apple - apple

Reported value	Reports
≥ 16	100%
≥ 31	99%
≥ 124	87%

apple - metal-3

Reported value	Reports
≥ 16	100%
≥ 28	100%

arm - bifrost

Reported value	Reports
≥ 16	100%
≥ 28	100%

arm - valhall

Reported value	Reports
≥ 16	100%
≥ 28	100%

intel - gen-11

Reported value	Reports
≥ 16	100%
≥ 28	46%

intel - gen-12lp

Reported value	Reports
≥ 16	100%
≥ 28	85%

intel - gen-8

Reported value	Reports
≥ 16	100%
≥ 28	97%

intel - gen-9

Reported value	Reports
≥ 16	100%
≥ 28	81%

intel - xe-2lpg

Reported value	Reports
≥ 16	100%
≥ 28	95%

intel - xe-lpg

Reported value	Reports
≥ 16	100%
≥ 28	98%

nvidia - ampere

Reported value	Reports
≥ 16	100%
≥ 28	100%

nvidia - blackwell

Reported value	Reports
≥ 16	100%
≥ 28	100%

nvidia - kepler

Reported value	Reports
≥ 16	100%
≥ 28	98%

nvidia - lovelace

Reported value	Reports
≥ 16	100%
≥ 28	100%

nvidia - maxwell

Reported value	Reports
≥ 16	100%
≥ 28	100%

nvidia - pascal

Reported value	Reports
≥ 16	100%
≥ 28	100%

nvidia - turing

Reported value	Reports
≥ 16	100%
≥ 28	100%

qualcomm - adreno-6xx

Reported value	Reports
≥ 16	100%
≥ 28	1%

qualcomm - adreno-7xx

Reported value	Reports
≥ 16	100%
≥ 28	4%

qualcomm - adreno-8xx

Reported value	Reports
≥ 16	100%