tree 473661bdca4c9568a555949c57caf8090f9160a2
parent 110cac1d098f2511d56d4984f6e465fa06cc2a43
author Jiawei Shao <jiawei.shao@intel.com> 1631864340 +0000
committer Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com> 1631864340 +0000

D3D12: Support creating render pipeline asynchronously

This patch implements the asynchronous path of CreateRenderPipelineAsync
on D3D12 backend.
1. Call the constructor of dawn_native::d3d12::RenderPipeline in main
   thread.
2. Execute dawn_native::RenderPipelineBase::Initialize() (a virtual function)
   asynchronously.
3. Ensure every operation in dawn_native::d3d12::RenderPipeline::Initialize()
   is thread-safe.
4. Save all the return values (pipeline object or error message, userdata, etc)
   in a CreateRenderPipelineAsyncWaitableCallbackTask object and insert this
   callback task into CallbackTaskManager.
5. In Callback.Finish():
- Insert the pipeline object into the pipeline cache if necessary
- Call WGPUCreateRenderPipelineAsyncCallback

This patch also removes FlatRenderPipelineDescriptor as it is not needed
right now.

BUG=dawn:529
TEST=dawn_end2end_tests

Change-Id: I7fd30339ab7bea599c483dea4bd1100359982409
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/64440
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>
Reviewed-by: Austin Eng <enga@chromium.org>