Method Render

Rendering/WebGPU/vtkWebGPUActor.cxx:91–151

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//------------------------------------------------------------------------------
void vtkWebGPUActor::Render(vtkRenderer* renderer, vtkMapper* mapper)
{
  auto& internals = (*this->Internals);
  if (auto* wgpuRenderer = vtkWebGPURenderer::SafeDownCast(renderer))
  {
    auto* wgpuRenderWindow = vtkWebGPURenderWindow::SafeDownCast(wgpuRenderer->GetRenderWindow());
    auto* wgpuConfiguration = wgpuRenderWindow->GetWGPUConfiguration();
    switch (wgpuRenderer->GetRenderStage())
    {
      case vtkWebGPURenderer::AwaitingPreparation:
        break;
      case vtkWebGPURenderer::SyncDeviceResources:
      {
        if (auto* wgpuTexture = vtkWebGPUTexture::SafeDownCast(this->GetTexture()))
        {
          wgpuTexture->Render(renderer);
        }
        if (this->NeedToRecreateBindGroups())
        {
          this->CreateBindGroups(wgpuConfiguration);
        }
        // reset this flag because the `mapper->Render()` call shall invalidate the bundle if it
        // determines that the render bundle needs to be recorded once again.
        mapper->Render(renderer, this);
        bool updateBuffers = this->CacheActorRenderOptions();
        updateBuffers |= this->CacheActorShadeOptions();
        updateBuffers |= this->CacheActorTransforms();
        updateBuffers |= this->CacheActorId();
        if (updateBuffers)
        {
          wgpuConfiguration->WriteBuffer(internals.ActorBuffer, 0,
            this->GetCachedActorInformation(), this->GetCacheSizeBytes(), "ActorBufferUpdate");
        }
        break;
      }
      case vtkWebGPURenderer::RecordingCommands:
        if (wgpuRenderer->GetUseRenderBundles() && this->SupportRenderBundles())
        {
          if (wgpuRenderer->GetRebuildRenderBundle())
          {
            wgpuRenderer->GetRenderBundleEncoder().SetBindGroup(1, internals.ActorBindGroup);
            mapper->Render(renderer, this);
          }
          // else, no need to record draw commands.
        }
        else
        {
          wgpuRenderer->GetRenderPassEncoder().SetBindGroup(1, internals.ActorBindGroup);
          mapper->Render(renderer, this);
        }
        break;
      case vtkWebGPURenderer::Finished:
      default:
        break;
    }
  }
  else
  {