chromium/third_party/dawn/include/dawn/native/DawnNative.h

// Copyright 2018 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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#ifndef INCLUDE_DAWN_NATIVE_DAWNNATIVE_H_
#define INCLUDE_DAWN_NATIVE_DAWNNATIVE_H_

#include <webgpu/webgpu_cpp.h>

#include <string>
#include <string_view>
#include <vector>

#include "dawn/dawn_proc_table.h"
#include "dawn/native/dawn_native_export.h"

namespace dawn::platform {
class Platform;
}  // namespace dawn::platform

namespace dawn::native {

class InstanceBase;
class AdapterBase;

// Each toggle is assigned with a TogglesStage, indicating the validation and earliest usage
// time of the toggle.
enum class ToggleStage { … };

// A struct to record the information of a toggle. A toggle is a code path in Dawn device that
// can be manually configured to run or not outside Dawn, including workarounds, special
// features and optimizations.
struct ToggleInfo { … };

// A struct to record the information of a feature. A feature is a GPU feature that is not
// required to be supported by all Dawn backends and can only be used when it is enabled on the
// creation of device.
struct FeatureInfo { … };

// An adapter is an object that represent on possibility of creating devices in the system.
// Most of the time it will represent a combination of a physical GPU and an API. Not that the
// same GPU can be represented by multiple adapters but on different APIs.
//
// The underlying Dawn adapter is owned by the Dawn instance so this class is not RAII but just
// a reference to an underlying adapter.
class DAWN_NATIVE_EXPORT Adapter { … };

enum BackendValidationLevel { … };

// Can be chained in InstanceDescriptor
struct DAWN_NATIVE_EXPORT DawnInstanceDescriptor : wgpu::ChainedStruct { … };

// Represents a connection to dawn_native and is used for dependency injection, discovering
// system adapters and injecting custom adapters (like a Swiftshader Vulkan adapter).
//
// This is an RAII class for Dawn instances and also controls the lifetime of all adapters
// for this instance.
class DAWN_NATIVE_EXPORT Instance { … };

// Backend-agnostic API for dawn_native
DAWN_NATIVE_EXPORT const DawnProcTable& GetProcs();

// Query the names of all the toggles that are enabled in device
DAWN_NATIVE_EXPORT std::vector<const char*> GetTogglesUsed(WGPUDevice device);

// Backdoor to get the number of lazy clears for testing
DAWN_NATIVE_EXPORT size_t GetLazyClearCountForTesting(WGPUDevice device);

//  Query if texture has been initialized
DAWN_NATIVE_EXPORT bool IsTextureSubresourceInitialized(
    WGPUTexture texture,
    uint32_t baseMipLevel,
    uint32_t levelCount,
    uint32_t baseArrayLayer,
    uint32_t layerCount,
    WGPUTextureAspect aspect = WGPUTextureAspect_All);

// Backdoor to get the order of the ProcMap for testing
DAWN_NATIVE_EXPORT std::vector<std::string_view> GetProcMapNamesForTesting();

DAWN_NATIVE_EXPORT bool DeviceTick(WGPUDevice device);

DAWN_NATIVE_EXPORT bool InstanceProcessEvents(WGPUInstance instance);

// ErrorInjector functions used for testing only. Defined in dawn_native/ErrorInjector.cpp
DAWN_NATIVE_EXPORT void EnableErrorInjector();
DAWN_NATIVE_EXPORT void DisableErrorInjector();
DAWN_NATIVE_EXPORT void ClearErrorInjector();
DAWN_NATIVE_EXPORT uint64_t AcquireErrorInjectorCallCount();
DAWN_NATIVE_EXPORT void InjectErrorAt(uint64_t index);

// The different types of external images
enum ExternalImageType { … };

// Common properties of external images
struct DAWN_NATIVE_EXPORT ExternalImageDescriptor { … };

struct DAWN_NATIVE_EXPORT ExternalImageExportInfo { … };

DAWN_NATIVE_EXPORT bool CheckIsErrorForTesting(void* objectHandle);

DAWN_NATIVE_EXPORT const char* GetObjectLabelForTesting(void* objectHandle);

DAWN_NATIVE_EXPORT uint64_t GetAllocatedSizeForTesting(WGPUBuffer buffer);

DAWN_NATIVE_EXPORT std::vector<const ToggleInfo*> AllToggleInfos();

// Used to query the details of an feature. Return nullptr if featureName is not a valid
// name of an feature supported in Dawn.
DAWN_NATIVE_EXPORT const FeatureInfo* GetFeatureInfo(wgpu::FeatureName feature);

class DAWN_NATIVE_EXPORT MemoryDump { … };
DAWN_NATIVE_EXPORT void DumpMemoryStatistics(WGPUDevice device, MemoryDump* dump);

// Unlike memory dumps which include detailed information about allocations, this only returns the
// total estimated memory usage, and is intended for background tracing for UMA.
DAWN_NATIVE_EXPORT uint64_t ComputeEstimatedMemoryUsage(WGPUDevice device);

// Free any unused GPU memory like staging buffers, cached resources, etc.
DAWN_NATIVE_EXPORT void ReduceMemoryUsage(WGPUDevice device);

}  // namespace dawn::native

#endif  // INCLUDE_DAWN_NATIVE_DAWNNATIVE_H_