1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "gpu/command_buffer/service/dawn_instance.h"
#include <dawn/webgpu_cpp.h>
#include "base/base_paths.h"
#include "base/files/file_path.h"
#include "base/path_service.h"
#include "build/buildflag.h"
#include "gpu/config/gpu_preferences.h"
#if BUILDFLAG(IS_MAC)
#include "base/apple/bundle_locations.h"
#include "base/apple/foundation_util.h"
#endif
namespace gpu::webgpu {
// static
std::unique_ptr<DawnInstance> DawnInstance::Create(
dawn::platform::Platform* platform,
const GpuPreferences& gpu_preferences) {
std::string dawn_search_path;
base::FilePath module_path;
#if BUILDFLAG(IS_MAC)
if (base::apple::AmIBundled()) {
dawn_search_path = base::apple::FrameworkBundlePath()
.Append("Libraries")
.AsEndingWithSeparator()
.MaybeAsASCII();
}
if (dawn_search_path.empty())
#endif
{
#if BUILDFLAG(IS_IOS)
if (base::PathService::Get(base::DIR_ASSETS, &module_path)) {
#else
if (base::PathService::Get(base::DIR_MODULE, &module_path)) {
#endif
dawn_search_path = module_path.AsEndingWithSeparator().MaybeAsASCII();
}
}
const char* dawn_search_path_c_str = dawn_search_path.c_str();
std::vector<const char*> require_instance_enabled_toggles;
std::vector<const char*> require_instance_disabled_toggles;
// Create instance with all user-required toggles, those which are not
// instance toggles will be ignored by Dawn.
for (const std::string& toggles :
gpu_preferences.enabled_dawn_features_list) {
require_instance_enabled_toggles.push_back(toggles.c_str());
}
for (const std::string& toggles :
gpu_preferences.disabled_dawn_features_list) {
require_instance_disabled_toggles.push_back(toggles.c_str());
}
wgpu::DawnTogglesDescriptor dawn_toggle_desc;
dawn_toggle_desc.enabledToggleCount = require_instance_enabled_toggles.size();
dawn_toggle_desc.enabledToggles = require_instance_enabled_toggles.data();
dawn_toggle_desc.disabledToggleCount =
require_instance_disabled_toggles.size();
dawn_toggle_desc.disabledToggles = require_instance_disabled_toggles.data();
dawn::native::DawnInstanceDescriptor dawn_instance_desc;
dawn_instance_desc.additionalRuntimeSearchPathsCount =
dawn_search_path.empty() ? 0u : 1u;
dawn_instance_desc.additionalRuntimeSearchPaths = &dawn_search_path_c_str;
dawn_instance_desc.platform = platform;
dawn_instance_desc.nextInChain = &dawn_toggle_desc;
wgpu::InstanceDescriptor instance_desc;
instance_desc.nextInChain = &dawn_instance_desc;
auto instance = std::make_unique<DawnInstance>(
reinterpret_cast<const WGPUInstanceDescriptor*>(&instance_desc));
switch (gpu_preferences.enable_dawn_backend_validation) {
case DawnBackendValidationLevel::kDisabled:
break;
case DawnBackendValidationLevel::kPartial:
instance->SetBackendValidationLevel(
dawn::native::BackendValidationLevel::Partial);
break;
case DawnBackendValidationLevel::kFull:
instance->SetBackendValidationLevel(
dawn::native::BackendValidationLevel::Full);
break;
}
return instance;
}
} // namespace gpu::webgpu
|
