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

// Copyright 2017 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
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// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include <vector>

#include "dawn/common/Assert.h"
#include "dawn/tests/DawnTest.h"
#include "dawn/utils/ComboRenderPipelineDescriptor.h"
#include "dawn/utils/WGPUHelpers.h"
#include "partition_alloc/pointers/raw_ptr.h"

namespace dawn {
namespace {

// Primitive topology tests work by drawing the following vertices with all the different primitive
// topology states:
// -------------------------------------
// |                                   |
// |        1        2        5        |
// |                                   |
// |                                   |
// |                                   |
// |                                   |
// |        0        3        4        |
// |                                   |
// -------------------------------------
//
// Points: This case looks exactly like above
//
// Lines
// -------------------------------------
// |                                   |
// |        1        2        5        |
// |        |        |        |        |
// |        |        |        |        |
// |        |        |        |        |
// |        |        |        |        |
// |        0        3        4        |
// |                                   |
// -------------------------------------
//
// Line Strip
// -------------------------------------
// |                                   |
// |        1--------2        5        |
// |        |        |        |        |
// |        |        |        |        |
// |        |        |        |        |
// |        |        |        |        |
// |        0        3--------4        |
// |                                   |
// -------------------------------------
//
// Triangle
// -------------------------------------
// |                                   |
// |        1--------2        5        |
// |        |xxxxxxx         x|        |
// |        |xxxxx         xxx|        |
// |        |xxx         xxxxx|        |
// |        |x         xxxxxxx|        |
// |        0        3--------4        |
// |                                   |
// -------------------------------------
//
// Triangle Strip
// -------------------------------------
// |                                   |
// |        1--------2        5        |
// |        |xxxxxxxxx       x|        |
// |        |xxxxxxxxxxx   xxx|        |
// |        |xxx   xxxxxxxxxxx|        |
// |        |x      xxxxxxxxxx|        |
// |        0        3--------4        |
// |                                   |
// -------------------------------------
//
// Each of these different states is a superset of some of the previous states,
// so for every state, we check any new added test locations that are not contained in previous
// states We also check that the test locations of subsequent states are untouched

constexpr static unsigned int kRTSize = …;

struct TestLocation { … };

constexpr TestLocation GetMidpoint(const TestLocation& a, const TestLocation& b) noexcept { … }

constexpr TestLocation GetCentroid(const TestLocation& a,
                                   const TestLocation& b,
                                   const TestLocation& c) noexcept { … }

// clang-format off
// Offset towards one corner to avoid x or y symmetry false positives
constexpr static unsigned int kOffset = …;

constexpr static TestLocation kPointTestLocations[] = …;

constexpr static TestLocation kLineTestLocations[] = …;

constexpr static TestLocation kLineStripTestLocations[] = …;

constexpr static TestLocation kTriangleTestLocations[] = …;

constexpr static TestLocation kTriangleStripTestLocations[] = …;

constexpr static float kRTSizef = …;
constexpr static float kVertices[] = …;
// clang-format on

class PrimitiveTopologyTest : public DawnTest { … };

// Test Point primitive topology
TEST_P(PrimitiveTopologyTest, PointList) { … }

// Test Line primitive topology
TEST_P(PrimitiveTopologyTest, LineList) { … }

// Test LineStrip primitive topology
TEST_P(PrimitiveTopologyTest, LineStrip) { … }

// Test Triangle primitive topology
TEST_P(PrimitiveTopologyTest, TriangleList) { … }

// Test TriangleStrip primitive topology
TEST_P(PrimitiveTopologyTest, TriangleStrip) { … }

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

}  // anonymous namespace
}  // namespace dawn