gecko-dev/dom/canvas/WebGLIpdl.h

564 строки
16 KiB
C++

/* -*- 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 WEBGLIPDL_H_
#define WEBGLIPDL_H_
#include "mozilla/layers/LayersSurfaces.h"
#include "WebGLTypes.h"
namespace mozilla {
namespace webgl {
// TODO: This should probably replace Shmem, or at least this should move to
// ipc/glue.
class RaiiShmem final {
RefPtr<mozilla::ipc::ActorLifecycleProxy> mWeakRef;
mozilla::ipc::Shmem mShmem = {};
public:
/// Returns zeroed data.
static RaiiShmem Alloc(mozilla::ipc::IProtocol* const allocator,
const size_t size,
const Shmem::SharedMemory::SharedMemoryType type) {
mozilla::ipc::Shmem shmem;
if (!allocator->AllocShmem(size, type, &shmem)) return {};
return {allocator, shmem};
}
// -
RaiiShmem() = default;
RaiiShmem(mozilla::ipc::IProtocol* const allocator,
const mozilla::ipc::Shmem& shmem)
: mWeakRef(allocator->ToplevelProtocol()->GetLifecycleProxy()),
mShmem(shmem) {
// Shmems are handled by the top-level, so use that or we might leak after
// the actor dies.
MOZ_ASSERT(mWeakRef);
}
void reset() {
if (IsShmem()) {
const auto& allocator = mWeakRef->Get();
if (allocator) {
allocator->DeallocShmem(mShmem);
}
}
mWeakRef = nullptr;
mShmem = {};
}
~RaiiShmem() { reset(); }
// -
RaiiShmem(RaiiShmem&& rhs) { *this = std::move(rhs); }
RaiiShmem& operator=(RaiiShmem&& rhs) {
reset();
mWeakRef = rhs.mWeakRef;
mShmem = rhs.Extract();
return *this;
}
// -
bool IsShmem() const { return mShmem.IsReadable(); }
explicit operator bool() const { return IsShmem(); }
// -
const auto& Shmem() const {
MOZ_ASSERT(IsShmem());
return mShmem;
}
Range<uint8_t> ByteRange() const {
MOZ_ASSERT(IsShmem());
return {mShmem.get<uint8_t>(), mShmem.Size<uint8_t>()};
}
mozilla::ipc::Shmem Extract() {
auto ret = mShmem;
mShmem = {};
reset();
return ret;
}
};
using Int32Vector = std::vector<int32_t>;
} // namespace webgl
namespace ipc {
template <>
struct IPDLParamTraits<mozilla::webgl::FrontBufferSnapshotIpc> final {
using T = mozilla::webgl::FrontBufferSnapshotIpc;
static void Write(IPC::Message* const msg, IProtocol* actor, T& in) {
WriteParam(msg, in.surfSize);
WriteIPDLParam(msg, actor, std::move(in.shmem));
}
static bool Read(const IPC::Message* const msg, PickleIterator* const itr,
IProtocol* actor, T* const out) {
return ReadParam(msg, itr, &out->surfSize) &&
ReadIPDLParam(msg, itr, actor, &out->shmem);
}
};
// -
template <>
struct IPDLParamTraits<mozilla::webgl::ReadPixelsResultIpc> final {
using T = mozilla::webgl::ReadPixelsResultIpc;
static void Write(IPC::Message* const msg, IProtocol* actor, T& in) {
WriteParam(msg, in.subrect);
WriteParam(msg, in.byteStride);
WriteIPDLParam(msg, actor, std::move(in.shmem));
}
static bool Read(const IPC::Message* const msg, PickleIterator* const itr,
IProtocol* actor, T* const out) {
return ReadParam(msg, itr, &out->subrect) &&
ReadParam(msg, itr, &out->byteStride) &&
ReadIPDLParam(msg, itr, actor, &out->shmem);
}
};
} // namespace ipc
namespace webgl {
using Int32Vector = std::vector<int32_t>;
} // namespace webgl
} // namespace mozilla
namespace IPC {
template <>
struct ParamTraits<mozilla::webgl::ContextLossReason>
: public ContiguousEnumSerializerInclusive<
mozilla::webgl::ContextLossReason,
mozilla::webgl::ContextLossReason::None,
mozilla::webgl::ContextLossReason::Guilty> {};
template <>
struct ParamTraits<mozilla::webgl::AttribBaseType>
: public ContiguousEnumSerializerInclusive<
mozilla::webgl::AttribBaseType,
mozilla::webgl::AttribBaseType::Boolean,
mozilla::webgl::AttribBaseType::Uint> {};
// -
template <typename T>
bool ValidateParam(const T& val) {
return ParamTraits<T>::Validate(val);
}
template <typename T>
struct ValidatedPlainOldDataSerializer : public PlainOldDataSerializer<T> {
static void Write(Message* const msg, const T& in) {
MOZ_ASSERT(ValidateParam(in));
PlainOldDataSerializer<T>::Write(msg, in);
}
static bool Read(const Message* const msg, PickleIterator* const itr,
T* const out) {
if (!PlainOldDataSerializer<T>::Read(msg, itr, out)) return false;
return ValidateParam(*out);
}
// static bool Validate(const T&) = 0;
};
// -
template <>
struct ParamTraits<mozilla::webgl::InitContextDesc> final
: public ValidatedPlainOldDataSerializer<mozilla::webgl::InitContextDesc> {
using T = mozilla::webgl::InitContextDesc;
static bool Validate(const T& val) {
return ValidateParam(val.options) && (val.size.x && val.size.y);
}
};
template <>
struct ParamTraits<mozilla::WebGLContextOptions> final
: public ValidatedPlainOldDataSerializer<mozilla::WebGLContextOptions> {
using T = mozilla::WebGLContextOptions;
static bool Validate(const T& val) {
return ValidateParam(val.powerPreference);
}
};
template <>
struct ParamTraits<mozilla::dom::WebGLPowerPreference> final
: public ValidatedPlainOldDataSerializer<
mozilla::dom::WebGLPowerPreference> {
using T = mozilla::dom::WebGLPowerPreference;
static bool Validate(const T& val) { return val <= T::High_performance; }
};
template <>
struct ParamTraits<mozilla::webgl::OpaqueFramebufferOptions> final
: public PlainOldDataSerializer<mozilla::webgl::OpaqueFramebufferOptions> {
};
// -
template <>
struct ParamTraits<mozilla::webgl::InitContextResult> final {
using T = mozilla::webgl::InitContextResult;
static void Write(Message* const msg, const T& in) {
WriteParam(msg, in.error);
WriteParam(msg, in.options);
WriteParam(msg, in.limits);
}
static bool Read(const Message* const msg, PickleIterator* const itr,
T* const out) {
return ReadParam(msg, itr, &out->error) &&
ReadParam(msg, itr, &out->options) &&
ReadParam(msg, itr, &out->limits);
}
};
template <>
struct ParamTraits<mozilla::webgl::ExtensionBits> final
: public PlainOldDataSerializer<mozilla::webgl::ExtensionBits> {};
template <>
struct ParamTraits<mozilla::webgl::Limits> final
: public PlainOldDataSerializer<mozilla::webgl::Limits> {};
// -
template <>
struct ParamTraits<mozilla::webgl::ReadPixelsDesc> final {
using T = mozilla::webgl::ReadPixelsDesc;
static void Write(Message* const msg, const T& in) {
WriteParam(msg, in.srcOffset);
WriteParam(msg, in.size);
WriteParam(msg, in.pi);
WriteParam(msg, in.packState);
}
static bool Read(const Message* const msg, PickleIterator* const itr,
T* const out) {
return ReadParam(msg, itr, &out->srcOffset) &&
ReadParam(msg, itr, &out->size) && ReadParam(msg, itr, &out->pi) &&
ReadParam(msg, itr, &out->packState);
}
};
// -
template <>
struct ParamTraits<mozilla::webgl::PixelPackState> final {
using T = mozilla::webgl::PixelPackState;
static void Write(Message* const msg, const T& in) {
WriteParam(msg, in.alignment);
WriteParam(msg, in.rowLength);
WriteParam(msg, in.skipRows);
WriteParam(msg, in.skipPixels);
}
static bool Read(const Message* const msg, PickleIterator* const itr,
T* const out) {
return ReadParam(msg, itr, &out->alignment) &&
ReadParam(msg, itr, &out->rowLength) &&
ReadParam(msg, itr, &out->skipRows) &&
ReadParam(msg, itr, &out->skipPixels);
}
};
// -
template <>
struct ParamTraits<mozilla::webgl::PackingInfo> final {
using T = mozilla::webgl::PackingInfo;
static void Write(Message* const msg, const T& in) {
WriteParam(msg, in.format);
WriteParam(msg, in.type);
}
static bool Read(const Message* const msg, PickleIterator* const itr,
T* const out) {
return ReadParam(msg, itr, &out->format) && ReadParam(msg, itr, &out->type);
}
};
// -
template <>
struct ParamTraits<mozilla::webgl::CompileResult> final {
using T = mozilla::webgl::CompileResult;
static void Write(Message* const msg, const T& in) {
WriteParam(msg, in.pending);
WriteParam(msg, in.log);
WriteParam(msg, in.translatedSource);
WriteParam(msg, in.success);
}
static bool Read(const Message* const msg, PickleIterator* const itr,
T* const out) {
return ReadParam(msg, itr, &out->pending) &&
ReadParam(msg, itr, &out->log) &&
ReadParam(msg, itr, &out->translatedSource) &&
ReadParam(msg, itr, &out->success);
}
};
// -
template <>
struct ParamTraits<mozilla::webgl::LinkResult> final {
using T = mozilla::webgl::LinkResult;
static void Write(Message* const msg, const T& in) {
WriteParam(msg, in.pending);
WriteParam(msg, in.log);
WriteParam(msg, in.success);
WriteParam(msg, in.active);
WriteParam(msg, in.tfBufferMode);
}
static bool Read(const Message* const msg, PickleIterator* const itr,
T* const out) {
return ReadParam(msg, itr, &out->pending) &&
ReadParam(msg, itr, &out->log) &&
ReadParam(msg, itr, &out->success) &&
ReadParam(msg, itr, &out->active) &&
ReadParam(msg, itr, &out->tfBufferMode);
}
};
// -
template <>
struct ParamTraits<mozilla::webgl::LinkActiveInfo> final {
using T = mozilla::webgl::LinkActiveInfo;
static void Write(Message* const msg, const T& in) {
WriteParam(msg, in.activeAttribs);
WriteParam(msg, in.activeUniforms);
WriteParam(msg, in.activeUniformBlocks);
WriteParam(msg, in.activeTfVaryings);
}
static bool Read(const Message* const msg, PickleIterator* const itr,
T* const out) {
return ReadParam(msg, itr, &out->activeAttribs) &&
ReadParam(msg, itr, &out->activeUniforms) &&
ReadParam(msg, itr, &out->activeUniformBlocks) &&
ReadParam(msg, itr, &out->activeTfVaryings);
}
};
// -
template <>
struct ParamTraits<mozilla::webgl::ActiveInfo> final {
using T = mozilla::webgl::ActiveInfo;
static void Write(Message* const msg, const T& in) {
WriteParam(msg, in.elemType);
WriteParam(msg, in.elemCount);
WriteParam(msg, in.name);
}
static bool Read(const Message* const msg, PickleIterator* const itr,
T* const out) {
return ReadParam(msg, itr, &out->elemType) &&
ReadParam(msg, itr, &out->elemCount) &&
ReadParam(msg, itr, &out->name);
}
};
// -
template <>
struct ParamTraits<mozilla::webgl::ActiveAttribInfo> final {
using T = mozilla::webgl::ActiveAttribInfo;
static void Write(Message* const msg, const T& in) {
WriteParam(msg, static_cast<const mozilla::webgl::ActiveInfo&>(in));
WriteParam(msg, in.location);
WriteParam(msg, in.baseType);
}
static bool Read(const Message* const msg, PickleIterator* const itr,
T* const out) {
return ReadParam(msg, itr, static_cast<mozilla::webgl::ActiveInfo*>(out)) &&
ReadParam(msg, itr, &out->location) &&
ReadParam(msg, itr, &out->baseType);
}
};
// -
template <>
struct ParamTraits<mozilla::webgl::ActiveUniformInfo> final {
using T = mozilla::webgl::ActiveUniformInfo;
static void Write(Message* const msg, const T& in) {
WriteParam(msg, static_cast<const mozilla::webgl::ActiveInfo&>(in));
WriteParam(msg, in.locByIndex);
WriteParam(msg, in.block_index);
WriteParam(msg, in.block_offset);
WriteParam(msg, in.block_arrayStride);
WriteParam(msg, in.block_matrixStride);
WriteParam(msg, in.block_isRowMajor);
}
static bool Read(const Message* const msg, PickleIterator* const itr,
T* const out) {
return ReadParam(msg, itr, static_cast<mozilla::webgl::ActiveInfo*>(out)) &&
ReadParam(msg, itr, &out->locByIndex) &&
ReadParam(msg, itr, &out->block_index) &&
ReadParam(msg, itr, &out->block_offset) &&
ReadParam(msg, itr, &out->block_arrayStride) &&
ReadParam(msg, itr, &out->block_matrixStride) &&
ReadParam(msg, itr, &out->block_isRowMajor);
}
};
// -
template <>
struct ParamTraits<mozilla::webgl::ActiveUniformBlockInfo> final {
using T = mozilla::webgl::ActiveUniformBlockInfo;
static void Write(Message* const msg, const T& in) {
WriteParam(msg, in.name);
WriteParam(msg, in.dataSize);
WriteParam(msg, in.activeUniformIndices);
WriteParam(msg, in.referencedByVertexShader);
WriteParam(msg, in.referencedByFragmentShader);
}
static bool Read(const Message* const msg, PickleIterator* const itr,
T* const out) {
return ReadParam(msg, itr, &out->name) &&
ReadParam(msg, itr, &out->dataSize) &&
ReadParam(msg, itr, &out->activeUniformIndices) &&
ReadParam(msg, itr, &out->referencedByVertexShader) &&
ReadParam(msg, itr, &out->referencedByFragmentShader);
}
};
// -
template <>
struct ParamTraits<mozilla::webgl::ShaderPrecisionFormat> final {
using T = mozilla::webgl::ShaderPrecisionFormat;
static void Write(Message* const msg, const T& in) {
WriteParam(msg, in.rangeMin);
WriteParam(msg, in.rangeMax);
WriteParam(msg, in.precision);
}
static bool Read(const Message* const msg, PickleIterator* const itr,
T* const out) {
return ReadParam(msg, itr, &out->rangeMin) &&
ReadParam(msg, itr, &out->rangeMax) &&
ReadParam(msg, itr, &out->precision);
}
};
// -
template <typename U, size_t N>
struct ParamTraits<U[N]> final {
using T = U[N];
static constexpr size_t kByteSize = sizeof(U) * N;
static_assert(std::is_trivial<U>::value);
static void Write(Message* const msg, const T& in) {
msg->WriteBytes(in, kByteSize);
}
static bool Read(const Message* const msg, PickleIterator* const itr,
T* const out) {
if (!msg->HasBytesAvailable(itr, kByteSize)) {
return false;
}
return msg->ReadBytesInto(itr, *out, kByteSize);
}
};
// -
template <>
struct ParamTraits<mozilla::webgl::GetUniformData> final {
using T = mozilla::webgl::GetUniformData;
static void Write(Message* const msg, const T& in) {
ParamTraits<decltype(in.data)>::Write(msg, in.data);
WriteParam(msg, in.type);
}
static bool Read(const Message* const msg, PickleIterator* const itr,
T* const out) {
return ParamTraits<decltype(out->data)>::Read(msg, itr, &out->data) &&
ReadParam(msg, itr, &out->type);
}
};
// -
template <typename U>
struct ParamTraits<mozilla::avec2<U>> final {
using T = mozilla::avec2<U>;
static void Write(Message* const msg, const T& in) {
WriteParam(msg, in.x);
WriteParam(msg, in.y);
}
static bool Read(const Message* const msg, PickleIterator* const itr,
T* const out) {
return ReadParam(msg, itr, &out->x) && ReadParam(msg, itr, &out->y);
}
};
// -
template <typename U>
struct ParamTraits<mozilla::avec3<U>> final {
using T = mozilla::avec3<U>;
static void Write(Message* const msg, const T& in) {
WriteParam(msg, in.x);
WriteParam(msg, in.y);
WriteParam(msg, in.z);
}
static bool Read(const Message* const msg, PickleIterator* const itr,
T* const out) {
return ReadParam(msg, itr, &out->x) && ReadParam(msg, itr, &out->y) &&
ReadParam(msg, itr, &out->z);
}
};
} // namespace IPC
#endif