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// Copyright 2022 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 <vector>
#include "dawn/tests/DawnTest.h"
#include "dawn/utils/WGPUHelpers.h"
namespace dawn {
namespace {
using RequestDP4aExtension = bool;
DAWN_TEST_PARAM_STRUCT(ExperimentalDP4aTestsParams, RequestDP4aExtension);
class ExperimentalDP4aTests : public DawnTestWithParams<ExperimentalDP4aTestsParams> {
protected:
std::vector<wgpu::FeatureName> GetRequiredFeatures() override {
mIsDP4aSupportedOnAdapter = SupportsFeatures({wgpu::FeatureName::ChromiumExperimentalDp4a});
if (!mIsDP4aSupportedOnAdapter) {
return {};
}
if (!IsD3D12()) {
mUseDxcEnabledOrNonD3D12 = true;
} else {
bool useDxcDisabled = false;
for (auto* disabledToggle : GetParam().forceDisabledWorkarounds) {
if (strncmp(disabledToggle, "use_dxc", strlen("use_dxc")) == 0) {
useDxcDisabled = true;
break;
}
}
mUseDxcEnabledOrNonD3D12 = !useDxcDisabled;
}
if (GetParam().mRequestDP4aExtension && mUseDxcEnabledOrNonD3D12) {
return {wgpu::FeatureName::ChromiumExperimentalDp4a};
}
return {};
}
bool IsDP4aSupportedOnAdapter() const { return mIsDP4aSupportedOnAdapter; }
bool UseDxcEnabledOrNonD3D12() const { return mUseDxcEnabledOrNonD3D12; }
private:
bool mIsDP4aSupportedOnAdapter = false;
bool mUseDxcEnabledOrNonD3D12 = false;
};
TEST_P(ExperimentalDP4aTests, BasicDP4aFeaturesTest) {
const char* computeShader = R"(
enable chromium_experimental_dp4a;
struct Buf {
data1 : i32,
data2 : u32,
data3 : i32,
data4 : u32,
}
@group(0) @binding(0) var<storage, read_write> buf : Buf;
@compute @workgroup_size(1)
fn main() {
var a = 0xFFFFFFFFu;
var b = 0xFFFFFFFEu;
var c = 0x01020304u;
buf.data1 = dot4I8Packed(a, b);
buf.data2 = dot4U8Packed(a, b);
buf.data3 = dot4I8Packed(a, c);
buf.data4 = dot4U8Packed(a, c);
}
)";
const bool shouldDP4AFeatureSupportedByDevice =
// Required when creating device
GetParam().mRequestDP4aExtension &&
// Adapter support the feature
IsDP4aSupportedOnAdapter() &&
// Proper toggle, allow_unsafe_apis and use_dxc if d3d12
// Note that "allow_unsafe_apis" is always enabled in
// DawnTestEnvironment::CreateInstance.
HasToggleEnabled("allow_unsafe_apis") && UseDxcEnabledOrNonD3D12();
const bool deviceSupportDP4AFeature =
device.HasFeature(wgpu::FeatureName::ChromiumExperimentalDp4a);
EXPECT_EQ(deviceSupportDP4AFeature, shouldDP4AFeatureSupportedByDevice);
if (!deviceSupportDP4AFeature) {
ASSERT_DEVICE_ERROR(utils::CreateShaderModule(device, computeShader));
return;
}
wgpu::BufferDescriptor bufferDesc;
bufferDesc.size = 4 * sizeof(uint32_t);
bufferDesc.usage = wgpu::BufferUsage::Storage | wgpu::BufferUsage::CopySrc;
wgpu::Buffer bufferOut = device.CreateBuffer(&bufferDesc);
wgpu::ComputePipelineDescriptor csDesc;
csDesc.compute.module = utils::CreateShaderModule(device, computeShader);
csDesc.compute.entryPoint = "main";
wgpu::ComputePipeline pipeline = device.CreateComputePipeline(&csDesc);
wgpu::BindGroup bindGroup = utils::MakeBindGroup(device, pipeline.GetBindGroupLayout(0),
{
{0, bufferOut},
});
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::ComputePassEncoder pass = encoder.BeginComputePass();
pass.SetPipeline(pipeline);
pass.SetBindGroup(0, bindGroup);
pass.DispatchWorkgroups(1);
pass.End();
wgpu::CommandBuffer commands = encoder.Finish();
queue.Submit(1, &commands);
uint32_t expected[] = {5, 259845, static_cast<uint32_t>(-10), 2550};
EXPECT_BUFFER_U32_RANGE_EQ(expected, bufferOut, 0, 4);
}
// DawnTestBase::CreateDeviceImpl always enables allow_unsafe_apis toggle.
DAWN_INSTANTIATE_TEST_P(ExperimentalDP4aTests,
{
D3D12Backend(),
D3D12Backend({}, {"use_dxc"}),
VulkanBackend(),
},
{true, false});
} // anonymous namespace
} // namespace dawn