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

// Copyright 2020 The Dawn & Tint Authors
//
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// modification, are permitted provided that the following conditions are met:
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//    this list of conditions and the following disclaimer in the documentation
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#include <utility>
#include <vector>

#include "absl/strings/str_format.h"
#include "dawn/common/Assert.h"
#include "dawn/tests/DawnTest.h"
#include "dawn/utils/ComboRenderPipelineDescriptor.h"
#include "dawn/utils/WGPUHelpers.h"

namespace dawn {
namespace {

TextureFormat;
DAWN_TEST_PARAM_STRUCT(…);

constexpr wgpu::CompareFunction kCompareFunctions[] = …;

// Test a "normal" ref value between 0 and 1; as well as negative and > 1 refs.
constexpr float kCompareRefs[] = …;

// Test 0, below the ref, equal to, above the ref, and 1.
const std::vector<float> kNormalizedTextureValues = …;

// Test the limits, and some values in between.
const std::vector<uint32_t> kStencilValues = …;

class DepthStencilSamplingTest : public DawnTestWithParams<DepthStencilSamplingTestParams> { … };

// Repro test for crbug.com/dawn/1187 where sampling a depth texture returns values not in [0, 1]
TEST_P(DepthStencilSamplingTest, CheckDepthTextureRange) { … }

// Test that sampling a depth/stencil texture at components 1, 2, and 3 yield 0, 0, and 1
// respectively
TEST_P(DepthStencilSamplingTest, SampleExtraComponents) { … }

// Test sampling both depth and stencil with a render/compute pipeline works.
TEST_P(DepthStencilSamplingTest, SampleDepthAndStencilRender) { … }

class DepthSamplingTest : public DepthStencilSamplingTest { … };

// Test that sampling a depth texture with a render/compute pipeline works
TEST_P(DepthSamplingTest, SampleDepthOnly) { … }

// Test that sampling in a render pipeline with all of the compare functions works.
TEST_P(DepthSamplingTest, CompareFunctionsRender) { … }

class StencilSamplingTest : public DepthStencilSamplingTest { … };

// Test that sampling a stencil texture with a render/compute pipeline works
TEST_P(StencilSamplingTest, SampleStencilOnly) { … }

DAWN_INSTANTIATE_TEST_P(…);

DAWN_INSTANTIATE_TEST_P(…);

DAWN_INSTANTIATE_TEST_P(…);

}  // anonymous namespace
}  // namespace dawn