v134 · graphics / compute
Subgroup Ops Explorer
Browse every subgroup intrinsic added in Chrome 134 — subgroupAdd, subgroupBroadcast, subgroupShuffle, and more. See a simulated invocation grid showing which lanes communicate, and check your adapter's subgroup support.
checking WebGPU…
checking subgroup feature…
Subgroup operations allow all invocations in a subgroup (typically 4–64 threads running in lockstep on GPU SIMD units) to communicate directly without shared memory.
subgroupAdd(x) sums all lanes' values in one instruction — no barrier needed. Chrome 134 exposes this via the "subgroups" WGSL feature.
Adapter subgroup info
Click the button to query this GPU adapter.
Subgroup operations catalog
Invocation grid simulation
Visualize how lanes within a subgroup interact for the selected operation. Each cell is one invocation; colored cells show active communication.