src/dawn/tests/end2end/Packed4x8IntegerDotProductTests.cpp

// Copyright 2022 The Dawn & Tint Authors
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#include <vector>

#include "dawn/tests/DawnTest.h"
#include "dawn/utils/WGPUHelpers.h"

namespace dawn {
namespace {

class Packed4x8IntegerDotProductTests : public DawnTest {};

TEST_P(Packed4x8IntegerDotProductTests, BasicPacked4x8IntegerDotProductTest) {
    // TODO(dawn:1704): investigate why the creation of compute pipeline with dot4{U|I}Packed()
    // fails on Pixel 4
    DAWN_SUPPRESS_TEST_IF(IsQualcomm());

    const char* computeShader = R"(
        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 = 0xFFFEFDFCu;
            var b = 0xFBFAF9F8u;
            var c = 0x01020304u;
            buf.data1 = dot4I8Packed(a, b);
            buf.data2 = dot4U8Packed(a, b);
            buf.data3 = dot4I8Packed(a, c);
            buf.data4 = dot4U8Packed(a, c);
        }
)";

    ASSERT_TRUE(instance.HasWGSLLanguageFeature(wgpu::WGSLFeatureName::Packed4x8IntegerDotProduct));

    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[] = {70, 252998, static_cast<uint32_t>(-30), 2530};
    EXPECT_BUFFER_U32_RANGE_EQ(expected, bufferOut, 0, 4);
}

// DawnTestBase::CreateDeviceImpl always enables allow_unsafe_apis toggle.
DAWN_INSTANTIATE_TEST(Packed4x8IntegerDotProductTests,
                      D3D11Backend(),
                      D3D12Backend(),
                      D3D12Backend({}, {"use_dxc"}),
                      D3D12Backend({"polyfill_packed_4x8_dot_product"}),
                      MetalBackend(),
                      VulkanBackend(),
                      VulkanBackend({"polyfill_packed_4x8_dot_product"}));

}  // anonymous namespace
}  // namespace dawn