| // Copyright 2020 The Dawn Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "tests/DawnTest.h" |
| |
| #include "dawn_native/Buffer.h" |
| #include "dawn_native/CommandEncoder.h" |
| #include "dawn_native/QueryHelper.h" |
| #include "utils/WGPUHelpers.h" |
| |
| namespace { |
| |
| void EncodeConvertTimestampsToNanoseconds(wgpu::CommandEncoder encoder, |
| wgpu::Buffer timestamps, |
| wgpu::Buffer availability, |
| wgpu::Buffer params) { |
| ASSERT_TRUE(dawn_native::EncodeConvertTimestampsToNanoseconds( |
| reinterpret_cast<dawn_native::CommandEncoder*>(encoder.Get()), |
| reinterpret_cast<dawn_native::BufferBase*>(timestamps.Get()), |
| reinterpret_cast<dawn_native::BufferBase*>(availability.Get()), |
| reinterpret_cast<dawn_native::BufferBase*>(params.Get())).IsSuccess()); |
| } |
| |
| class InternalShaderExpectation : public detail::Expectation { |
| public: |
| ~InternalShaderExpectation() override = default; |
| |
| InternalShaderExpectation(const uint64_t* values, const unsigned int count) { |
| mExpected.assign(values, values + count); |
| } |
| |
| // Expect the actual results are approximately equal to the expected values. |
| testing::AssertionResult Check(const void* data, size_t size) override { |
| DAWN_ASSERT(size == sizeof(uint64_t) * mExpected.size()); |
| constexpr static float kErrorToleranceRatio = 0.002f; |
| |
| const uint64_t* actual = static_cast<const uint64_t*>(data); |
| for (size_t i = 0; i < mExpected.size(); ++i) { |
| if (mExpected[i] == 0 && actual[i] != 0) { |
| return testing::AssertionFailure() |
| << "Expected data[" << i << "] to be 0, actual " << actual[i] |
| << std::endl; |
| } |
| |
| if (abs(static_cast<int64_t>(mExpected[i] - actual[i])) > |
| mExpected[i] * kErrorToleranceRatio) { |
| return testing::AssertionFailure() |
| << "Expected data[" << i << "] to be " << mExpected[i] << ", actual " |
| << actual[i] << ". Error rate is larger than " << kErrorToleranceRatio |
| << std::endl; |
| } |
| } |
| |
| return testing::AssertionSuccess(); |
| } |
| |
| private: |
| std::vector<uint64_t> mExpected; |
| }; |
| |
| } // anonymous namespace |
| |
| class QueryInternalShaderTests : public DawnTest {}; |
| |
| // Test the accuracy of timestamp compute shader which uses unsigned 32-bit integers to simulate |
| // unsigned 64-bit integers (timestamps) multiplied by float (period). |
| // The arguments pass to timestamp internal pipeline: |
| // - The timestamps buffer contains the original timestamps resolved from query set (created |
| // manually here), and will be used to store the results processed by the compute shader. |
| // Expect 0 for unavailable timestamps and nanoseconds for available timestamps in an expected |
| // error tolerance ratio. |
| // - The availability buffer passes the data of which slot in timestamps buffer is an initialized |
| // timestamp. |
| // - The params buffer passes the timestamp count, the offset in timestamps buffer and the |
| // timestamp period (here use GPU frequency (HZ) on Intel D3D12 to calculate the period in |
| // ns for testing). |
| TEST_P(QueryInternalShaderTests, TimestampComputeShader) { |
| // TODO(crbug.com/dawn/741): Test output is wrong with D3D12 + WARP. |
| DAWN_SKIP_TEST_IF(IsD3D12() && IsWARP()); |
| |
| DAWN_SKIP_TEST_IF(UsesWire()); |
| |
| constexpr uint32_t kTimestampCount = 10u; |
| // A gpu frequency on Intel D3D12 (ticks/second) |
| constexpr uint64_t kGPUFrequency = 12000048u; |
| constexpr uint64_t kNsPerSecond = 1000000000u; |
| // Timestamp period in nanoseconds |
| constexpr float kPeriod = static_cast<float>(kNsPerSecond) / kGPUFrequency; |
| |
| // Original timestamp values for testing |
| std::vector<uint64_t> timestamps = { |
| 1, // garbage data which is not written at beginning |
| 10079569507, // t0 |
| 10394415012, // t1 |
| 1, // garbage data which is not written between timestamps |
| 11713454943, // t2 |
| 38912556941, // t3 (big value) |
| 10080295766, // t4 (reset) |
| 12159966783, // t5 (after reset) |
| 12651224612, // t6 |
| 39872473956, // t7 |
| }; |
| |
| // The buffer indicating which values are available timestamps |
| std::vector<uint32_t> availabilities = {0, 1, 1, 0, 1, 1, 1, 1, 1, 1}; |
| wgpu::Buffer availabilityBuffer = |
| utils::CreateBufferFromData(device, availabilities.data(), |
| kTimestampCount * sizeof(uint32_t), wgpu::BufferUsage::Storage); |
| |
| // The resolve buffer storing original timestamps and the converted values |
| wgpu::BufferDescriptor timestampsDesc; |
| timestampsDesc.size = kTimestampCount * sizeof(uint64_t); |
| timestampsDesc.usage = |
| wgpu::BufferUsage::Storage | wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::CopyDst; |
| wgpu::Buffer timestampsBuffer = device.CreateBuffer(×tampsDesc); |
| |
| auto PrepareExpectedResults = [&](uint32_t offset) -> std::vector<uint64_t> { |
| ASSERT(offset % sizeof(uint64_t) == 0); |
| std::vector<uint64_t> expected; |
| for (size_t i = 0; i < kTimestampCount; i++) { |
| // The data before offset remains as it is |
| if (i < offset / sizeof(uint64_t)) { |
| expected.push_back(timestamps[i]); |
| continue; |
| } |
| |
| if (availabilities[i] == 0) { |
| // Not a available timestamp, write 0 |
| expected.push_back(0u); |
| } else { |
| // Maybe the timestamp * period is larger than the maximum of uint64, so cast the |
| // delta value to double (higher precision than float) |
| expected.push_back( |
| static_cast<uint64_t>(static_cast<double>(timestamps[i]) * kPeriod)); |
| } |
| } |
| return expected; |
| }; |
| |
| // Convert timestamps in timestamps buffer with offset 0 |
| { |
| constexpr uint32_t kOffset = 0u; |
| |
| // Write orignal timestamps to timestamps buffer |
| queue.WriteBuffer(timestampsBuffer, 0, timestamps.data(), |
| kTimestampCount * sizeof(uint64_t)); |
| |
| // The params uniform buffer |
| dawn_native::TimestampParams params = {kTimestampCount, kOffset, kPeriod}; |
| wgpu::Buffer paramsBuffer = utils::CreateBufferFromData(device, ¶ms, sizeof(params), |
| wgpu::BufferUsage::Uniform); |
| |
| wgpu::CommandEncoder encoder = device.CreateCommandEncoder(); |
| EncodeConvertTimestampsToNanoseconds(encoder, timestampsBuffer, availabilityBuffer, |
| paramsBuffer); |
| wgpu::CommandBuffer commands = encoder.Finish(); |
| queue.Submit(1, &commands); |
| |
| // Expected results: Timestamp * period |
| std::vector<uint64_t> expected = PrepareExpectedResults(kOffset); |
| EXPECT_BUFFER(timestampsBuffer, 0, kTimestampCount * sizeof(uint64_t), |
| new InternalShaderExpectation(expected.data(), kTimestampCount)); |
| } |
| |
| // Convert timestamps in timestamps buffer with offset 8 |
| { |
| constexpr uint32_t kOffset = 8u; |
| |
| // Write orignal timestamps to timestamps buffer |
| queue.WriteBuffer(timestampsBuffer, 0, timestamps.data(), |
| kTimestampCount * sizeof(uint64_t)); |
| |
| // The params uniform buffer |
| dawn_native::TimestampParams params = {kTimestampCount, kOffset, kPeriod}; |
| wgpu::Buffer paramsBuffer = utils::CreateBufferFromData(device, ¶ms, sizeof(params), |
| wgpu::BufferUsage::Uniform); |
| |
| wgpu::CommandEncoder encoder = device.CreateCommandEncoder(); |
| EncodeConvertTimestampsToNanoseconds(encoder, timestampsBuffer, availabilityBuffer, |
| paramsBuffer); |
| wgpu::CommandBuffer commands = encoder.Finish(); |
| queue.Submit(1, &commands); |
| |
| // Expected results: Timestamp * period |
| std::vector<uint64_t> expected = PrepareExpectedResults(kOffset); |
| EXPECT_BUFFER(timestampsBuffer, 0, kTimestampCount * sizeof(uint64_t), |
| new InternalShaderExpectation(expected.data(), kTimestampCount)); |
| } |
| } |
| |
| DAWN_INSTANTIATE_TEST(QueryInternalShaderTests, D3D12Backend(), MetalBackend(), VulkanBackend()); |
