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

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

#include "dawn/common/Assert.h"
#include "dawn/common/Constants.h"
#include "dawn/common/Math.h"
#include "dawn/tests/DawnTest.h"
#include "dawn/utils/ComboRenderPipelineDescriptor.h"
#include "dawn/utils/WGPUHelpers.h"

namespace dawn {
namespace {

constexpr wgpu::TextureFormat kDefaultFormat = …;

class TextureShaderBuiltinTests : public DawnTest { … };

// Note: the following tests for various texture method behavior is mainly
// targeted at OpenGL/OpenGLES backend without native GLSL support for these builtins.
// These tests should be trivial for otherbackend, and thus can be used as control case.

// Test calling textureNumLevels & textureNumSamples & textureDimensions in one shader.
// Note: textureDimensions implicitly calls textureNumLevels after tint shader transform to clamp
// mip levels.
TEST_P(TextureShaderBuiltinTests, Basic) { … }

// Testing that baseMipLevel is handled correctly.
TEST_P(TextureShaderBuiltinTests, BaseMipLevelTextureView) { … }

// Testing that baseMipLevel is handled correctly for texture_cube.
TEST_P(TextureShaderBuiltinTests, BaseMipLevelTextureViewCube) { … }

// Test calling textureNumLevels & textureNumSamples inside function and taking a function param as
// the argument.
TEST_P(TextureShaderBuiltinTests, BuiltinCallInFunction) { … }

// Test the internal uniform buffer data is properly updated between dispatches
// When the same pipeline is set only once.
TEST_P(TextureShaderBuiltinTests, OnePipelineMultipleDispatches) { … }

// Test textureNumLevels & textureNumSamples results correctness used in multiple pipelines sharing
// same shader module.
TEST_P(TextureShaderBuiltinTests, OneShaderModuleMultipleEntryPoints) { … }

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

}  // anonymous namespace
}  // namespace dawn