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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/. */
#include "js/ArrayBuffer.h"
#include "js/Value.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/Logging.h"
#include "mozilla/ipc/Shmem.h"
#include "mozilla/dom/WebGPUBinding.h"
#include "Device.h"
#include "CommandEncoder.h"
#include "BindGroup.h"
#include "Adapter.h"
#include "Buffer.h"
#include "ComputePipeline.h"
#include "Queue.h"
#include "RenderPipeline.h"
#include "Sampler.h"
#include "Texture.h"
#include "TextureView.h"
#include "ipc/WebGPUChild.h"
namespace mozilla {
namespace webgpu {
mozilla::LazyLogModule gWebGPULog("WebGPU");
NS_IMPL_CYCLE_COLLECTION_INHERITED(Device, DOMEventTargetHelper, mBridge,
mQueue)
NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(Device, DOMEventTargetHelper)
GPU_IMPL_JS_WRAP(Device)
static void mapFreeCallback(void* aContents, void* aUserData) {
Unused << aContents;
Unused << aUserData;
}
RefPtr<WebGPUChild> Device::GetBridge() { return mBridge; }
JSObject* Device::CreateExternalArrayBuffer(JSContext* aCx, size_t aOffset,
size_t aSize,
const ipc::Shmem& aShmem) {
MOZ_ASSERT(aOffset + aSize <= aShmem.Size<uint8_t>());
return JS::NewExternalArrayBuffer(aCx, aSize, aShmem.get<uint8_t>() + aOffset,
&mapFreeCallback, nullptr);
}
Device::Device(Adapter* const aParent, RawId aId)
: DOMEventTargetHelper(aParent->GetParentObject()),
mId(aId),
mBridge(aParent->mBridge),
mQueue(new Queue(this, aParent->mBridge, aId)) {
mBridge->RegisterDevice(mId, this);
}
Device::~Device() { Cleanup(); }
void Device::Cleanup() {
if (mValid && mBridge && mBridge->IsOpen()) {
mValid = false;
mBridge->UnregisterDevice(mId);
}
}
void Device::GetLabel(nsAString& aValue) const { aValue = mLabel; }
void Device::SetLabel(const nsAString& aLabel) { mLabel = aLabel; }
Queue* Device::DefaultQueue() const { return mQueue; }
already_AddRefed<Buffer> Device::CreateBuffer(
const dom::GPUBufferDescriptor& aDesc, ErrorResult& aRv) {
ipc::Shmem shmem;
bool hasMapFlags = aDesc.mUsage & (dom::GPUBufferUsage_Binding::MAP_WRITE |
dom::GPUBufferUsage_Binding::MAP_READ);
if (hasMapFlags || aDesc.mMappedAtCreation) {
const auto checked = CheckedInt<size_t>(aDesc.mSize);
if (!checked.isValid()) {
aRv.ThrowRangeError("Mappable size is too large");
return nullptr;
}
const auto& size = checked.value();
// TODO: use `ShmemPool`?
if (!mBridge->AllocShmem(size, ipc::Shmem::SharedMemory::TYPE_BASIC,
&shmem)) {
aRv.ThrowAbortError(
nsPrintfCString("Unable to allocate shmem of size %" PRIuPTR, size));
return nullptr;
}
// zero out memory
memset(shmem.get<uint8_t>(), 0, size);
}
// If the buffer is not mapped at creation, and it has Shmem, we send it
// to the GPU process. Otherwise, we keep it.
RawId id = mBridge->DeviceCreateBuffer(mId, aDesc);
if (hasMapFlags && !aDesc.mMappedAtCreation) {
mBridge->SendBufferReturnShmem(id, std::move(shmem));
}
RefPtr<Buffer> buffer = new Buffer(this, id, aDesc.mSize);
if (aDesc.mMappedAtCreation) {
buffer->SetMapped(std::move(shmem),
!(aDesc.mUsage & dom::GPUBufferUsage_Binding::MAP_READ));
}
return buffer.forget();
}
RefPtr<MappingPromise> Device::MapBufferAsync(RawId aId, uint32_t aMode,
size_t aOffset, size_t aSize,
ErrorResult& aRv) {
ffi::WGPUHostMap mode;
switch (aMode) {
case dom::GPUMapMode_Binding::READ:
mode = ffi::WGPUHostMap_Read;
break;
case dom::GPUMapMode_Binding::WRITE:
mode = ffi::WGPUHostMap_Write;
break;
default:
aRv.ThrowInvalidAccessError(
nsPrintfCString("Invalid map flag %u", aMode));
return nullptr;
}
const CheckedInt<uint64_t> offset(aOffset);
if (!offset.isValid()) {
aRv.ThrowRangeError("Mapped offset is too large");
return nullptr;
}
const CheckedInt<uint64_t> size(aSize);
if (!size.isValid()) {
aRv.ThrowRangeError("Mapped size is too large");
return nullptr;
}
return mBridge->SendBufferMap(aId, mode, offset.value(), size.value());
}
void Device::UnmapBuffer(RawId aId, ipc::Shmem&& aShmem, bool aFlush) {
mBridge->SendBufferUnmap(aId, std::move(aShmem), aFlush);
}
already_AddRefed<Texture> Device::CreateTexture(
const dom::GPUTextureDescriptor& aDesc) {
RawId id = mBridge->DeviceCreateTexture(mId, aDesc);
RefPtr<Texture> texture = new Texture(this, id, aDesc);
return texture.forget();
}
already_AddRefed<Sampler> Device::CreateSampler(
const dom::GPUSamplerDescriptor& aDesc) {
RawId id = mBridge->DeviceCreateSampler(mId, aDesc);
RefPtr<Sampler> sampler = new Sampler(this, id);
return sampler.forget();
}
already_AddRefed<CommandEncoder> Device::CreateCommandEncoder(
const dom::GPUCommandEncoderDescriptor& aDesc) {
RawId id = mBridge->DeviceCreateCommandEncoder(mId, aDesc);
RefPtr<CommandEncoder> encoder = new CommandEncoder(this, mBridge, id);
return encoder.forget();
}
already_AddRefed<BindGroupLayout> Device::CreateBindGroupLayout(
const dom::GPUBindGroupLayoutDescriptor& aDesc) {
RawId id = mBridge->DeviceCreateBindGroupLayout(mId, aDesc);
RefPtr<BindGroupLayout> object = new BindGroupLayout(this, id);
return object.forget();
}
already_AddRefed<PipelineLayout> Device::CreatePipelineLayout(
const dom::GPUPipelineLayoutDescriptor& aDesc) {
RawId id = mBridge->DeviceCreatePipelineLayout(mId, aDesc);
RefPtr<PipelineLayout> object = new PipelineLayout(this, id);
return object.forget();
}
already_AddRefed<BindGroup> Device::CreateBindGroup(
const dom::GPUBindGroupDescriptor& aDesc) {
RawId id = mBridge->DeviceCreateBindGroup(mId, aDesc);
RefPtr<BindGroup> object = new BindGroup(this, id);
return object.forget();
}
already_AddRefed<ShaderModule> Device::CreateShaderModule(
const dom::GPUShaderModuleDescriptor& aDesc) {
if (aDesc.mCode.IsString()) {
// we don't yet support WGSL
return nullptr;
}
RawId id = mBridge->DeviceCreateShaderModule(mId, aDesc);
RefPtr<ShaderModule> object = new ShaderModule(this, id);
return object.forget();
}
already_AddRefed<ComputePipeline> Device::CreateComputePipeline(
const dom::GPUComputePipelineDescriptor& aDesc) {
nsTArray<RawId> implicitBindGroupLayoutIds;
RawId id = mBridge->DeviceCreateComputePipeline(mId, aDesc,
&implicitBindGroupLayoutIds);
RefPtr<ComputePipeline> object =
new ComputePipeline(this, id, std::move(implicitBindGroupLayoutIds));
return object.forget();
}
already_AddRefed<RenderPipeline> Device::CreateRenderPipeline(
const dom::GPURenderPipelineDescriptor& aDesc) {
nsTArray<RawId> implicitBindGroupLayoutIds;
RawId id = mBridge->DeviceCreateRenderPipeline(mId, aDesc,
&implicitBindGroupLayoutIds);
RefPtr<RenderPipeline> object =
new RenderPipeline(this, id, std::move(implicitBindGroupLayoutIds));
return object.forget();
}
already_AddRefed<Texture> Device::InitSwapChain(
const dom::GPUSwapChainDescriptor& aDesc,
const dom::GPUExtent3DDict& aExtent3D, wr::ExternalImageId aExternalImageId,
gfx::SurfaceFormat aFormat) {
const layers::RGBDescriptor rgbDesc(
gfx::IntSize(AssertedCast<int>(aExtent3D.mWidth),
AssertedCast<int>(aExtent3D.mHeight)),
aFormat, false);
// buffer count doesn't matter much, will be created on demand
const size_t maxBufferCount = 10;
mBridge->DeviceCreateSwapChain(mId, rgbDesc, maxBufferCount,
aExternalImageId);
dom::GPUTextureDescriptor desc;
desc.mDimension = dom::GPUTextureDimension::_2d;
desc.mSize.SetAsGPUExtent3DDict() = aExtent3D;
desc.mFormat = aDesc.mFormat;
desc.mMipLevelCount = 1;
desc.mSampleCount = 1;
desc.mUsage = aDesc.mUsage | dom::GPUTextureUsage_Binding::COPY_SRC;
return CreateTexture(desc);
}
} // namespace webgpu
} // namespace mozilla
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