// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module viz.mojom;

import "gpu/ipc/common/gpu_feature_info.mojom";
import "gpu/ipc/common/gpu_info.mojom";
import "gpu/ipc/common/surface_handle.mojom";
import "services/viz/privileged/interfaces/gl/context_lost_reason.mojom";
import "url/mojom/url.mojom";

// Communication channel from the gpu process to the gpu host. This interface
// should never have any sync function calls.
interface GpuHost {
  // If |gpu_info| and |gpu_feature_info| are for hardware GPU, then
  // |gpu_info_for_hardware_gpu| and |gpu_feature_info_for_hardware_gpu| can
  // be uninitialized data.
  DidInitialize(gpu.mojom.GpuInfo gpu_info,
                gpu.mojom.GpuFeatureInfo gpu_feature_info,
                gpu.mojom.GpuInfo? gpu_info_for_hardware_gpu,
                gpu.mojom.GpuFeatureInfo? gpu_feature_info_for_hardware_gpu);
  DidFailInitialize();

  DidCreateContextSuccessfully();
  DidCreateOffscreenContext(url.mojom.Url url);
  DidDestroyOffscreenContext(url.mojom.Url url);

  DidDestroyChannel(int32 client_id);
  DidLoseContext(bool offscreen,
                 ContextLostReason reason,
                 url.mojom.Url active_url);

  // GPU process has decided to disable GPU compositing. Host process keeps
  // track of this decision in case the GPU process crashes.
  DisableGpuCompositing();

  SetChildSurface(gpu.mojom.SurfaceHandle parent,
                  gpu.mojom.SurfaceHandle child);
  StoreShaderToDisk(int32 client_id, string key, string shader);

  RecordLogMessage(int32 severity, string header, string message);
};