// Copyright 2022 The ChromiumOS Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

syntax = "proto3";

option optimize_for = LITE_RUNTIME;

package shadercached;
option go_package = "go.chromium.org/chromiumos/system_api/shadercached_proto";

message InstallRequest {
  // Steam application id.
  uint64 steam_app_id = 1;
  // If true, mount the DLC contents in host-side VM gpu cache.
  bool mount = 2;
  // Name of the VM.
  string vm_name = 3;
  // Owner of the vm.
  string vm_owner_id = 4;
}

message InstallResponse {
  // If true, shader cache is installed and mounted.
  bool mounted = 1;
}

message UninstallRequest {
  // Steam application id.
  uint64 steam_app_id = 1;
}

message ShaderCacheMountStatus {
  // Name of the VM.
  string vm_name = 1;
  // Owner of the vm.
  string vm_owner_id = 2;
  // Steam application ID that was last requested to mount.
  uint64 steam_app_id = 3;
  // Set to true if shader cache is mounted.
  bool mounted = 4;
  // If set with reason string, (un)mount operation as not successful.
  string error = 5;
}

message UnmountRequest {
  // Name of the VM.
  string vm_name = 1;
  // Owner of the vm.
  string vm_owner_id = 2;
  // Steam application id.
  uint64 steam_app_id = 3;
}

message PrepareShaderCacheRequest {
  // Name of the VM.
  string vm_name = 1;
  // Owner of the vm.
  string vm_owner_id = 2;
  // TODO(b/271776528): Support general-purpose VM shader cache creation
  // Per-boot cache
  // bool per_boot_cache = 3;
  // Support precompiled cache
  // bool precompiled_cache = 4;
}

message PrepareShaderCacheResponse {
  // TODO(b/271776528): Support general-purpose VM shader cache creation
  // Path to device shader cache
  // string device_path = 1;
  // Path to render server cache
  // string render_server_path = 2;
  // Path to precompiled cache (if applicable)
  string precompiled_cache_path = 3;
}

message PurgeRequest {
  // Name of the VM.
  string vm_name = 1;
  // Owner of the vm.
  string vm_owner_id = 2;
}