createComputePipelineAsync method

@override Future<ComputePipelineHandle> createComputePipelineAsync(ShaderHandle shader)

createComputePipeline through createComputePipelineAsync: a compute pipeline has no draw state, so the whole of it is realised here, off the calling turn, and a pipeline the browser refuses completes the future with the error rather than surfacing later at debugDrainErrors.

Implementation

@override
Future<ComputePipelineHandle> createComputePipelineAsync(
  ShaderHandle shader,
) async {
  final stage = shader.backend;
  if (stage is! WebGpuComputeShader) {
    throw ArgumentError.value(
      shader.name,
      'shader',
      'is not a compute stage on this device',
    );
  }
  final pipeline = await webgpuCreateComputePipelineAsync(_gpuDevice, stage);
  return wrapComputePipeline(owner: this, backend: pipeline, shader: shader);
}