chromium/third_party/dawn/src/dawn/tests/end2end/ComputeFlowControlTests.cpp

// Copyright 2023 The Dawn & Tint Authors
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#include <vector>

#include "dawn/tests/DawnTest.h"

#include "dawn/utils/WGPUHelpers.h"

namespace dawn {
namespace {

// Tests flow control in WGSL shaders. This helps to identify bugs either in Tint's WGSL
// compilation, or driver shader compilation.
class ComputeFlowControlTests : public DawnTest { … };

void ComputeFlowControlTests::RunTest(const char* shader,
                                      const std::vector<uint32_t>& inputs,
                                      const std::vector<uint32_t>& expected) { … }

// Test no branching with one call to push_output
TEST_P(ComputeFlowControlTests, One) { … }

// Test no branching with two calls to push_output
TEST_P(ComputeFlowControlTests, Two) { … }

// Test no branching with three calls to push_output
TEST_P(ComputeFlowControlTests, Three) { … }

// Test if statement with branch taken
TEST_P(ComputeFlowControlTests, IfTrue) { … }

// Test if statement with branch not taken
TEST_P(ComputeFlowControlTests, IfFalse) { … }

// Same as IfFalse test, but with push_output calls inlined
TEST_P(ComputeFlowControlTests, IfFalseInlined) { … }

// Same as IfFalse test, but with fixed-size storage arrays
TEST_P(ComputeFlowControlTests, IfFalseFixedSizeArrays) { … }

// Same as IfFalse test, but `outputs.count++` is replaced by `outputs.count = i + 1`
TEST_P(ComputeFlowControlTests, IfFalseNoCountPlusPlus) { … }

// Same as IfFalse test, but `outputs.count++` is replaced by `outputs.count += 4`
TEST_P(ComputeFlowControlTests, IfFalseIncCountByFour) { … }

// Test if-else statement with true branch taken
TEST_P(ComputeFlowControlTests, IfElseTrue) { … }

// Test if-else statement with false branch taken
TEST_P(ComputeFlowControlTests, IfElseFalse) { … }

DAWN_INSTANTIATE_TEST(ComputeFlowControlTests,
                      D3D11Backend(),
                      D3D12Backend(),
                      MetalBackend(),
                      OpenGLBackend(),
                      OpenGLESBackend(),
                      VulkanBackend());

}  // anonymous namespace
}  // namespace dawn