| // Copyright 2021 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" |
| // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include <vector> |
| |
| #include "dawn/wire/SupportedFeatures.h" |
| #include "dawn/wire/WireResult.h" |
| #include "dawn/wire/server/ObjectStorage.h" |
| #include "dawn/wire/server/Server.h" |
| |
| namespace dawn::wire::server { |
| |
| WireResult Server::DoAdapterRequestDevice(Known<WGPUAdapter> adapter, |
| ObjectHandle eventManager, |
| WGPUFuture future, |
| ObjectHandle deviceHandle, |
| WGPUFuture deviceLostFuture, |
| const WGPUDeviceDescriptor* descriptor, |
| uint8_t userdataCount) { |
| Reserved<WGPUDevice> device; |
| WIRE_TRY(Objects<WGPUDevice>().Allocate(&device, deviceHandle, AllocationState::Reserved)); |
| |
| auto userdata = MakeUserdata<RequestDeviceUserdata>(); |
| userdata->eventManager = eventManager; |
| userdata->future = future; |
| userdata->deviceObjectId = device.id; |
| userdata->deviceLostFuture = deviceLostFuture; |
| |
| // Update the descriptor with the device lost callback associated with this request. |
| auto deviceLostUserdata = MakeUserdata<DeviceLostUserdata>(); |
| deviceLostUserdata->eventManager = eventManager; |
| deviceLostUserdata->future = deviceLostFuture; |
| |
| WGPUDeviceDescriptor desc = *descriptor; |
| desc.deviceLostCallbackInfo.mode = WGPUCallbackMode_AllowProcessEvents; |
| desc.deviceLostCallbackInfo.callback = ForwardToServer<&Server::OnDeviceLost>; |
| desc.deviceLostCallbackInfo.userdata = deviceLostUserdata.release(); |
| |
| if (userdataCount == 1) { |
| mProcs.adapterRequestDevice(adapter->handle, &desc, |
| ForwardToServer<&Server::OnRequestDeviceCallback>, |
| userdata.release()); |
| } else { |
| mProcs.adapterRequestDevice2( |
| adapter->handle, &desc, |
| {nullptr, WGPUCallbackMode_AllowSpontaneous, |
| ForwardToServer2<&Server::OnRequestDeviceCallback>, userdata.release(), nullptr}); |
| } |
| return WireResult::Success; |
| } |
| |
| void Server::OnRequestDeviceCallback(RequestDeviceUserdata* data, |
| WGPURequestDeviceStatus status, |
| WGPUDevice device, |
| const char* message) { |
| ReturnAdapterRequestDeviceCallbackCmd cmd = {}; |
| cmd.eventManager = data->eventManager; |
| cmd.future = data->future; |
| cmd.status = status; |
| cmd.message = message; |
| |
| if (status != WGPURequestDeviceStatus_Success) { |
| DAWN_ASSERT(device == nullptr); |
| SerializeCommand(cmd); |
| return; |
| } |
| |
| std::vector<WGPUFeatureName> features; |
| |
| size_t featuresCount = mProcs.deviceEnumerateFeatures(device, nullptr); |
| features.resize(featuresCount); |
| mProcs.deviceEnumerateFeatures(device, features.data()); |
| |
| // The client should only be able to request supported features, so all enumerated |
| // features that were enabled must also be supported by the wire. |
| // Note: We fail the callback here, instead of immediately upon receiving |
| // the request to preserve callback ordering. |
| for (WGPUFeatureName f : features) { |
| if (!IsFeatureSupported(f)) { |
| // Release the device. |
| mProcs.deviceRelease(device); |
| device = nullptr; |
| |
| cmd.status = WGPURequestDeviceStatus_Error; |
| cmd.message = "Requested feature not supported."; |
| SerializeCommand(cmd); |
| return; |
| } |
| } |
| |
| cmd.featuresCount = features.size(); |
| cmd.features = features.data(); |
| |
| WGPUSupportedLimits limits = {}; |
| // Also query the DawnExperimentalSubgroupLimits and report to client. |
| WGPUDawnExperimentalSubgroupLimits experimentalSubgroupLimits = {}; |
| experimentalSubgroupLimits.chain.sType = WGPUSType_DawnExperimentalSubgroupLimits; |
| limits.nextInChain = &experimentalSubgroupLimits.chain; |
| mProcs.deviceGetLimits(device, &limits); |
| cmd.limits = &limits; |
| |
| // Assign the handle and allocated status if the device is created successfully. |
| Known<WGPUDevice> reservation; |
| if (FillReservation(data->deviceObjectId, device, &reservation) == WireResult::FatalError) { |
| cmd.status = WGPURequestDeviceStatus_Unknown; |
| cmd.message = "Destroyed before request was fulfilled."; |
| SerializeCommand(cmd); |
| return; |
| } |
| DAWN_ASSERT(reservation.data != nullptr); |
| reservation->info->server = this; |
| reservation->info->self = reservation.AsHandle(); |
| SetForwardingDeviceCallbacks(reservation); |
| SerializeCommand(cmd); |
| } |
| |
| } // namespace dawn::wire::server |