185 lines
7.2 KiB
C++
185 lines
7.2 KiB
C++
// Copyright 2021 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <memory>
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#include <utility>
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#include <vector>
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#include "dawn/dawn_proc.h"
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#include "dawn/tests/DawnTest.h"
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#include "dawn/utils/SystemUtils.h"
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#include "dawn/utils/WGPUHelpers.h"
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namespace dawn {
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namespace {
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class DeviceInitializationTest : public testing::Test {
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protected:
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void SetUp() override { dawnProcSetProcs(&native::GetProcs()); }
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void TearDown() override { dawnProcSetProcs(nullptr); }
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// Test that the device can still be used by testing a buffer copy.
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void ExpectDeviceUsable(wgpu::Device device) {
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wgpu::Buffer src =
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utils::CreateBufferFromData<uint32_t>(device, wgpu::BufferUsage::CopySrc, {1, 2, 3, 4});
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wgpu::Buffer dst = utils::CreateBufferFromData<uint32_t>(
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device, wgpu::BufferUsage::CopyDst | wgpu::BufferUsage::MapRead, {0, 0, 0, 0});
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wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
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encoder.CopyBufferToBuffer(src, 0, dst, 0, 4 * sizeof(uint32_t));
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wgpu::CommandBuffer commands = encoder.Finish();
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device.GetQueue().Submit(1, &commands);
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bool done = false;
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dst.MapAsync(
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wgpu::MapMode::Read, 0, 4 * sizeof(uint32_t),
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[](WGPUBufferMapAsyncStatus status, void* userdata) {
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EXPECT_EQ(status, WGPUBufferMapAsyncStatus_Success);
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*static_cast<bool*>(userdata) = true;
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},
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&done);
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// Note: we can't actually test this if Tick moves over to
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// wgpuInstanceProcessEvents. We can still test that object creation works
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// without crashing.
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while (!done) {
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device.Tick();
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utils::USleep(100);
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}
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const uint32_t* mapping = static_cast<const uint32_t*>(dst.GetConstMappedRange());
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EXPECT_EQ(mapping[0], 1u);
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EXPECT_EQ(mapping[1], 2u);
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EXPECT_EQ(mapping[2], 3u);
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EXPECT_EQ(mapping[3], 4u);
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}
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};
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// Test that device operations are still valid if the reference to the instance
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// is dropped.
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TEST_F(DeviceInitializationTest, DeviceOutlivesInstance) {
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// Get properties of all available adapters and then free the instance.
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// We want to create a device on a fresh instance and adapter each time.
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std::vector<wgpu::AdapterProperties> availableAdapterProperties;
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{
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auto instance = std::make_unique<native::Instance>();
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instance->EnableAdapterBlocklist(false);
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instance->DiscoverDefaultPhysicalDevices();
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for (const native::Adapter& adapter : instance->GetAdapters()) {
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wgpu::AdapterProperties properties;
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adapter.GetProperties(&properties);
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if (properties.backendType == wgpu::BackendType::Null) {
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continue;
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}
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availableAdapterProperties.push_back(properties);
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}
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}
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for (const wgpu::AdapterProperties& desiredProperties : availableAdapterProperties) {
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wgpu::Device device;
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auto instance = std::make_unique<native::Instance>();
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instance->EnableAdapterBlocklist(false);
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instance->DiscoverDefaultPhysicalDevices();
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for (native::Adapter& adapter : instance->GetAdapters()) {
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wgpu::AdapterProperties properties;
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adapter.GetProperties(&properties);
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if (properties.deviceID == desiredProperties.deviceID &&
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properties.vendorID == desiredProperties.vendorID &&
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properties.adapterType == desiredProperties.adapterType &&
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properties.backendType == desiredProperties.backendType) {
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// Create the device, destroy the instance, and break out of the loop.
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device = wgpu::Device::Acquire(adapter.CreateDevice());
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instance.reset();
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break;
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}
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}
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if (device) {
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ExpectDeviceUsable(std::move(device));
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}
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}
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}
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// Test that it is still possible to create a device from an adapter after the reference to the
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// instance is dropped.
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TEST_F(DeviceInitializationTest, AdapterOutlivesInstance) {
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// Get properties of all available adapters and then free the instance.
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// We want to create a device on a fresh instance and adapter each time.
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std::vector<wgpu::AdapterProperties> availableAdapterProperties;
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{
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auto instance = std::make_unique<native::Instance>();
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instance->EnableAdapterBlocklist(false);
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instance->DiscoverDefaultPhysicalDevices();
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for (const native::Adapter& adapter : instance->GetAdapters()) {
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wgpu::AdapterProperties properties;
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adapter.GetProperties(&properties);
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if (properties.backendType == wgpu::BackendType::Null) {
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continue;
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}
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// TODO(dawn:1705): Remove this once D3D11 backend is fully implemented.
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if (properties.backendType == wgpu::BackendType::D3D11) {
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continue;
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}
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availableAdapterProperties.push_back(properties);
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}
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}
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for (const wgpu::AdapterProperties& desiredProperties : availableAdapterProperties) {
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wgpu::Adapter adapter;
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auto instance = std::make_unique<native::Instance>();
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instance->EnableAdapterBlocklist(false);
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// Save a pointer to the instance.
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// It will only be valid as long as the instance is alive.
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WGPUInstance unsafeInstancePtr = instance->Get();
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instance->DiscoverDefaultPhysicalDevices();
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for (native::Adapter& nativeAdapter : instance->GetAdapters()) {
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wgpu::AdapterProperties properties;
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nativeAdapter.GetProperties(&properties);
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if (properties.deviceID == desiredProperties.deviceID &&
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properties.vendorID == desiredProperties.vendorID &&
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properties.adapterType == desiredProperties.adapterType &&
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properties.backendType == desiredProperties.backendType) {
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// Save the adapter, and reset the instance.
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// Check that the number of adapters before the reset is > 0, and after the reset
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// is 0. Unsafe, but we assume the pointer is still valid since the adapter is
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// holding onto the instance. The instance should have cleared all internal
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// references to adapters when the last external ref is dropped.
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adapter = wgpu::Adapter(nativeAdapter.Get());
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EXPECT_GT(native::GetAdapterCountForTesting(unsafeInstancePtr), 0u);
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instance.reset();
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EXPECT_EQ(native::GetAdapterCountForTesting(unsafeInstancePtr), 0u);
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break;
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}
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}
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if (adapter) {
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ExpectDeviceUsable(adapter.CreateDevice());
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}
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}
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}
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} // anonymous namespace
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} // namespace dawn
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