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%
≥ 28	89%
≥ 30	19%
≥ 32	8%

Platform Support

Platform

Reports

Android

Reported value	Reports
≥ 16	100%
≥ 28	52%

Chromium OS

Reported value	Reports
≥ 16	100%
≥ 28	21%

iOS

Reported value	Reports
≥ 16	100%
≥ 28	99%
≥ 124	51%

Linux

Reported value	Reports
≥ 16	100%
≥ 28	49%
≥ 30	8%
≥ 31	7%

Mac OS

Reported value	Reports
≥ 16	100%
≥ 28	99%
≥ 30	34%
≥ 32	17%
≥ 124	16%

Windows

Reported value	Reports
≥ 16	100%
≥ 28	100%
≥ 31	7%

Browser Support

Browser

Reports

Chrome/Chromium

Reported value	Reports
≥ 16	100%
≥ 28	86%
≥ 31	2%
≥ 124	1%

Edge

Reported value	Reports
≥ 16	100%
≥ 28	99%
≥ 31	1%

Firefox

Reported value	Reports
≥ 16	100%
≥ 28	99%
≥ 30	98%
≥ 124	1%

Opera

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

Other

Reported value	Reports
≥ 16	100%
≥ 28	92%
≥ 31	60%
≥ 124	21%

Safari

Reported value	Reports
≥ 16	100%
≥ 28	99%
≥ 31	98%
≥ 32	55%
≥ 124	54%

Samsung Internet

Reported value	Reports
≥ 16	100%
≥ 28	36%

Vendor Values

Vendor

Reports

0x10de

Reported value	Reports
≥ 16	100%
≥ 28	100%

0x8086

Reported value	Reports
≥ 16	100%
≥ 28	100%

amd

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

apple

Reported value	Reports
≥ 16	100%
≥ 28	99%
≥ 31	50%
≥ 124	26%

arm

Reported value	Reports
≥ 16	100%
≥ 28	100%

google

Reported value	Reports
≥ 16	100%
≥ 28	100%

huawei

Reported value	Reports
≥ 16	100%
≥ 28	100%

img-tec

Reported value	Reports
≥ 16	100%
≥ 28	99%

intel

Reported value	Reports
≥ 16	100%
≥ 28	80%

intelr

Reported value	Reports
≥ 16	100%
≥ 31	100%
≥ 32	77%

microsoft

Reported value	Reports
≥ 16	100%
≥ 28	100%

nvidia

Reported value	Reports
≥ 16	100%
≥ 28	100%

qualcomm

Reported value	Reports
≥ 16	100%
≥ 28	3%

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	51%

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	39%

intel - gen-12lp

Reported value	Reports
≥ 16	100%
≥ 28	81%

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	98%

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	99%

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	2%

qualcomm - adreno-7xx

Reported value	Reports
≥ 16	100%
≥ 28	6%

qualcomm - adreno-8xx

Reported value	Reports
≥ 16	100%
≥ 28	1%