recipes · recipe · Updated 2026-09-09

A compute shader works on data

Distinguish a surface function from a dispatched compute kernel.

Our surface examples answer a material question at a position. A compute shader performs work over data. It can fill an image, move particles, filter values, or support a simulation without drawing a triangle. Yeho calls the dispatched function a compute function. Each invocation receives a compute.index. A buffer holds the values the invocations read or write. We will first give every invocation one independent output element.

start.yh · compute example

Status: complete-program

[auto]
compute Fill(buffer of int output)
{
    int index = compute.index
    if index >= output.count { return }
    output[index] = 10 + index
}

buffer of int output
output.Resize(8)
computeTask job = dispatch Fill(output)
wait job
if job.failed { Console.Error(job.error.message) Process.Exit(1) }
for index from 0 < output.count { Console.Log(Text.From(output[index])) }

manifestVersion = "2"
package = "api.example.recipe__compute_start"
version = "0.1.0"
languageEdition = "yeho-core-2026.1"

[app]
kind = "headless"

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