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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 WEBGLQUEUEPARAMTRAITS_H_
#define WEBGLQUEUEPARAMTRAITS_H_
#include <type_traits>
#include "ipc/EnumSerializer.h"
#include "TexUnpackBlob.h"
#include "WebGLTypes.h"
namespace mozilla {
namespace webgl {
template <typename T>
struct QueueParamTraits;
// -
#define USE_TIED_FIELDS(T) \
template <> \
struct QueueParamTraits<T> : QueueParamTraits_TiedFields<T> {};
// -
USE_TIED_FIELDS(layers::RemoteTextureId)
USE_TIED_FIELDS(layers::RemoteTextureOwnerId)
USE_TIED_FIELDS(WebGLContextOptions)
USE_TIED_FIELDS(webgl::PixelUnpackStateWebgl)
USE_TIED_FIELDS(webgl::SwapChainOptions)
USE_TIED_FIELDS(webgl::ReadPixelsDesc)
USE_TIED_FIELDS(webgl::VertAttribPointerDesc)
USE_TIED_FIELDS(webgl::PackingInfo)
USE_TIED_FIELDS(webgl::TypedQuad)
USE_TIED_FIELDS(webgl::PixelPackingState)
USE_TIED_FIELDS(FloatOrInt)
} // namespace webgl
template <>
inline auto TiedFields<gfx::IntSize>(gfx::IntSize& a) {
return std::tie(a.width, a.height);
}
namespace webgl {
USE_TIED_FIELDS(gfx::IntSize)
// -
#undef USE_TIED_FIELDS
// -
template <class T>
struct QueueParamTraits<avec2<T>> : QueueParamTraits_TiedFields<avec2<T>> {};
template <class T>
struct QueueParamTraits<avec3<T>> : QueueParamTraits_TiedFields<avec3<T>> {};
// ---------------------------------------------------------------------
// Enums!
inline constexpr bool IsEnumCase(const webgl::AttribBaseType raw) {
switch (raw) {
case webgl::AttribBaseType::Boolean:
case webgl::AttribBaseType::Float:
case webgl::AttribBaseType::Int:
case webgl::AttribBaseType::Uint:
return true;
}
return false;
}
static_assert(IsEnumCase(webgl::AttribBaseType(3)));
static_assert(!IsEnumCase(webgl::AttribBaseType(4)));
static_assert(!IsEnumCase(webgl::AttribBaseType(5)));
#define USE_IS_ENUM_CASE(T) \
template <> \
struct QueueParamTraits<T> : QueueParamTraits_IsEnumCase<T> {};
USE_IS_ENUM_CASE(webgl::AttribBaseType)
USE_IS_ENUM_CASE(webgl::ProvokingVertex)
#undef USE_IS_ENUM_CASE
// ---------------------------------------------------------------------
// Custom QueueParamTraits
template <typename T>
struct QueueParamTraits<Span<T>> {
template <typename U>
static bool Write(ProducerView<U>& view, const Span<T>& in) {
const auto& elemCount = in.size();
auto status = view.WriteParam(elemCount);
if (!status) return status;
if (!elemCount) return status;
status = view.WriteFromRange(Range<const T>{in});
return status;
}
template <typename U>
static bool Read(ConsumerView<U>& view, Span<const T>* const out) {
size_t elemCount = 0;
auto status = view.ReadParam(&elemCount);
if (!status) return status;
if (!elemCount) {
*out = {};
return true;
}
auto data = view.template ReadRange<const T>(elemCount);
if (!data) return false;
*out = Span{*data};
return true;
}
};
template <>
struct QueueParamTraits<webgl::ContextLossReason>
: public ContiguousEnumSerializerInclusive<
webgl::ContextLossReason, webgl::ContextLossReason::None,
webgl::ContextLossReason::Guilty> {};
template <typename V, typename E>
struct QueueParamTraits<Result<V, E>> {
using T = Result<V, E>;
template <typename U>
static bool Write(ProducerView<U>& aProducerView, const T& aArg) {
const auto ok = aArg.isOk();
auto status = aProducerView.WriteParam(ok);
if (!status) return status;
if (ok) {
status = aProducerView.WriteParam(aArg.unwrap());
} else {
status = aProducerView.WriteParam(aArg.unwrapErr());
}
return status;
}
template <typename U>
static bool Read(ConsumerView<U>& aConsumerView, T* aArg) {
bool ok;
auto status = aConsumerView.ReadParam(&ok);
if (!status) return status;
if (ok) {
V val;
status = aConsumerView.ReadParam(&val);
*aArg = val;
} else {
E val;
status = aConsumerView.ReadParam(&val);
*aArg = Err(val);
}
return status;
}
};
template <>
struct QueueParamTraits<std::string> {
using T = std::string;
template <typename U>
static bool Write(ProducerView<U>& aProducerView, const T& aArg) {
const auto size = aArg.size();
auto status = aProducerView.WriteParam(size);
if (!status) return status;
status = aProducerView.WriteFromRange(Range<const char>{aArg.data(), size});
return status;
}
template <typename U>
static bool Read(ConsumerView<U>& aConsumerView, T* aArg) {
size_t size;
auto status = aConsumerView.ReadParam(&size);
if (!status) return status;
const auto view = aConsumerView.template ReadRange<char>(size);
if (!view) return false;
aArg->assign(view->begin().get(), size);
return status;
}
};
template <typename U>
struct QueueParamTraits<std::vector<U>> {
using T = std::vector<U>;
template <typename V>
static bool Write(ProducerView<V>& aProducerView, const T& aArg) {
auto status = aProducerView.WriteParam(aArg.size());
if (!status) return status;
for (const auto& cur : aArg) {
status = aProducerView.WriteParam(cur);
if (!status) return status;
}
return status;
}
template <typename V>
static bool Read(ConsumerView<V>& aConsumerView, T* aArg) {
size_t size;
auto status = aConsumerView.ReadParam(&size);
if (!status) return status;
aArg->resize(size);
for (auto& cur : *aArg) {
status = aConsumerView.ReadParam(&cur);
if (!status) return status;
}
return status;
}
};
template <>
struct QueueParamTraits<WebGLExtensionID>
: public ContiguousEnumSerializer<WebGLExtensionID,
WebGLExtensionID::ANGLE_instanced_arrays,
WebGLExtensionID::Max> {};
template <>
struct QueueParamTraits<CompileResult> {
using T = CompileResult;
template <typename U>
static bool Write(ProducerView<U>& aProducerView, const T& aArg) {
aProducerView.WriteParam(aArg.pending);
aProducerView.WriteParam(aArg.log);
aProducerView.WriteParam(aArg.translatedSource);
return aProducerView.WriteParam(aArg.success);
}
template <typename U>
static bool Read(ConsumerView<U>& aConsumerView, T* aArg) {
aConsumerView.ReadParam(&aArg->pending);
aConsumerView.ReadParam(&aArg->log);
aConsumerView.ReadParam(&aArg->translatedSource);
return aConsumerView.ReadParam(&aArg->success);
}
};
template <>
struct QueueParamTraits<mozilla::layers::TextureType>
: public ContiguousEnumSerializer<mozilla::layers::TextureType,
mozilla::layers::TextureType::Unknown,
mozilla::layers::TextureType::Last> {};
template <>
struct QueueParamTraits<mozilla::gfx::SurfaceFormat>
: public ContiguousEnumSerializerInclusive<
mozilla::gfx::SurfaceFormat, mozilla::gfx::SurfaceFormat::B8G8R8A8,
mozilla::gfx::SurfaceFormat::UNKNOWN> {};
template <>
struct QueueParamTraits<gfxAlphaType>
: public ContiguousEnumSerializerInclusive<
gfxAlphaType, gfxAlphaType::Opaque, gfxAlphaType::NonPremult> {};
// -
template <class Enum>
using WebIDLEnumQueueSerializer =
ContiguousEnumSerializerInclusive<Enum, ContiguousEnumValues<Enum>::min,
ContiguousEnumValues<Enum>::max>;
template <>
struct QueueParamTraits<dom::WebGLPowerPreference>
: public WebIDLEnumQueueSerializer<dom::WebGLPowerPreference> {};
template <>
struct QueueParamTraits<dom::PredefinedColorSpace>
: public WebIDLEnumQueueSerializer<dom::PredefinedColorSpace> {};
} // namespace webgl
} // namespace mozilla
#endif // WEBGLQUEUEPARAMTRAITS_H_
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