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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef WEBGPU_TYPES_H_
#define WEBGPU_TYPES_H_
#include <cstdint>
#include "mozilla/GfxMessageUtils.h"
#include "mozilla/Maybe.h"
#include "mozilla/ParamTraits_STL.h"
#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/ipc/IPDLParamTraits.h"
#include "mozilla/layers/LayersSurfaces.h"
#include "nsString.h"
namespace mozilla::dom {
enum class GPUErrorFilter : uint8_t;
} // namespace mozilla::dom
namespace mozilla::webgpu {
using RawId = uint64_t;
using BufferAddress = uint64_t;
struct ErrorScope {
dom::GPUErrorFilter filter;
Maybe<nsCString> firstMessage;
};
enum class PopErrorScopeResultType : uint8_t {
NoError,
ThrowOperationError,
ValidationError,
OutOfMemory,
InternalError,
DeviceLost,
_LAST = DeviceLost,
};
struct PopErrorScopeResult {
PopErrorScopeResultType resultType;
nsCString message;
};
enum class WebGPUCompilationMessageType { Error, Warning, Info };
// TODO: Better name? CompilationMessage alread taken by the dom object.
/// The serializable counterpart of the dom object CompilationMessage.
struct WebGPUCompilationMessage {
nsString message;
uint64_t lineNum = 0;
uint64_t linePos = 0;
// In utf16 code units.
uint64_t offset = 0;
// In utf16 code units.
uint64_t length = 0;
WebGPUCompilationMessageType messageType =
WebGPUCompilationMessageType::Error;
};
/// A helper to reduce the boiler plate of turning the many Optional<nsAString>
/// we get from the dom to the nullable nsACString* we pass to the wgpu ffi.
class StringHelper {
public:
explicit StringHelper(const nsString& aWide) {
if (!aWide.IsEmpty()) {
mNarrow = Some(NS_ConvertUTF16toUTF8(aWide));
}
}
const nsACString* Get() const {
if (mNarrow.isSome()) {
return mNarrow.ptr();
}
return nullptr;
}
private:
Maybe<NS_ConvertUTF16toUTF8> mNarrow;
};
// Used to create an ExternalTextureSourceHost.
struct ExternalTextureSourceDescriptor {
std::array<RawId, 3> mTextureIds;
std::array<RawId, 3> mViewIds;
layers::SurfaceDescriptor mSurfaceDescriptor;
gfx::IntSize mSize;
std::array<float, 6> mSampleTransform;
std::array<float, 6> mLoadTransform;
};
} // namespace mozilla::webgpu
namespace IPC {
template <>
struct ParamTraits<mozilla::webgpu::ExternalTextureSourceDescriptor> {
using ParamType = mozilla::webgpu::ExternalTextureSourceDescriptor;
static void Write(MessageWriter* aWriter, const ParamType& aParam) {
WriteParam(aWriter, aParam.mTextureIds);
WriteParam(aWriter, aParam.mViewIds);
WriteParam(aWriter, aParam.mSurfaceDescriptor);
WriteParam(aWriter, aParam.mSize);
WriteParam(aWriter, aParam.mSampleTransform);
WriteParam(aWriter, aParam.mLoadTransform);
}
static bool Read(MessageReader* aReader, ParamType* aResult) {
return ReadParam(aReader, &aResult->mTextureIds) &&
ReadParam(aReader, &aResult->mViewIds) &&
ReadParam(aReader, &aResult->mSurfaceDescriptor) &&
ReadParam(aReader, &aResult->mSize) &&
ReadParam(aReader, &aResult->mSampleTransform) &&
ReadParam(aReader, &aResult->mLoadTransform);
}
};
} // namespace IPC
#endif // WEBGPU_TYPES_H_
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