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

// Copyright 2021 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include <limits>
#include <sstream>
#include <string>
#include <vector>

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

namespace dawn {
enum class CheckIndex : uint32_t { … };
}  // namespace dawn

template <>
struct wgpu::IsWGPUBitmask<dawn::CheckIndex> { … };

namespace dawn {
namespace {

constexpr uint32_t kRTSize = …;

enum class DrawMode { … };

bool IsIndirectDraw(DrawMode mode) { … }

}  // anonymous namespace

namespace {

class FirstIndexOffsetTests : public DawnTest { … };

void FirstIndexOffsetTests::TestVertexIndex(DrawMode mode, uint32_t firstVertex) { … }

void FirstIndexOffsetTests::TestInstanceIndex(DrawMode mode, uint32_t firstInstance) { … }

void FirstIndexOffsetTests::TestBothIndices(DrawMode mode,
                                            uint32_t firstVertex,
                                            uint32_t firstInstance) { … }

// Conditionally tests if first/baseVertex and/or firstInstance have been correctly passed to the
// vertex shader. Since vertex shaders can't write to storage buffers, we pass vertex/instance
// indices to a fragment shader via u32 attributes. The fragment shader runs once and writes the
// values to a storage buffer. If vertex index is used, the vertex buffer is padded with 0s.
void FirstIndexOffsetTests::TestImpl(DrawMode mode,
                                     CheckIndex checkIndex,
                                     uint32_t firstVertex,
                                     uint32_t firstInstance) { … }

// Test that vertex_index starts at 7 when drawn using Draw()
TEST_P(FirstIndexOffsetTests, NonIndexedVertexOffset) { … }

// Test that instance_index starts at 11 when drawn using Draw()
TEST_P(FirstIndexOffsetTests, NonIndexedInstanceOffset) { … }

// Test that vertex_index and instance_index start at 7 and 11 respectively when drawn using Draw()
TEST_P(FirstIndexOffsetTests, NonIndexedBothOffset) { … }

// Test that vertex_index starts at 7 when drawn using DrawIndexed()
TEST_P(FirstIndexOffsetTests, IndexedVertex) { … }

// Test that instance_index starts at 11 when drawn using DrawIndexed()
TEST_P(FirstIndexOffsetTests, IndexedInstance) { … }

// Test that vertex_index and instance_index start at 7 and 11 respectively when drawn using
// DrawIndexed()
TEST_P(FirstIndexOffsetTests, IndexedBothOffset) { … }

// Test that vertex_index starts at 7 when drawn using DrawIndirect()
TEST_P(FirstIndexOffsetTests, NonIndexedIndirectVertexOffset) { … }

// Test that instance_index starts at 11 when drawn using DrawIndirect()
TEST_P(FirstIndexOffsetTests, NonIndexedIndirectInstanceOffset) { … }

// Test that vertex_index and instance_index start at 7 and 11 respectively when drawn using
// DrawIndirect()
TEST_P(FirstIndexOffsetTests, NonIndexedIndirectBothOffset) { … }

// Test that vertex_index starts at 7 when drawn using DrawIndexedIndirect()
TEST_P(FirstIndexOffsetTests, IndexedIndirectVertex) { … }

// Test that instance_index starts at 11 when drawn using DrawIndexed()
TEST_P(FirstIndexOffsetTests, IndexedIndirectInstance) { … }

// Test that vertex_index and instance_index start at 7 and 11 respectively when drawn using
// DrawIndexed()
TEST_P(FirstIndexOffsetTests, IndexedIndirectBothOffset) { … }

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

}  // anonymous namespace
}  // namespace dawn